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#electronic signatures
#distance sensor
#movement and direction
#inputs and outputs
#sensing and measuring
#displaying numbers
#inputs and outpus
#displaying
#color of light
#digital signatures
#text-to-speech
#electronic signature
#power supply
#microphone
#audio
#vibration
#amplifier
#speaker
#stereo
#mono
#adafruit
#dac
#i2s
#cjmcu
#pimoroni
#adc
#sparkfun
#lidar
#pololu
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This module allows you to read 125 kHz RFID (Radio-Frequency Identification) tags and send their information using a UART (Universal Asynchronous Receiver Transmitter) interface.
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The Pololu QTR-1RC reflectance sensor carries a single infrared LED and phototransistor pair and delivers a digital output (HIGH/LOW)
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this component is currently not available.
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The 3-axis accelerometer measures the changes of speed. This information can be used to deduce the alteration of positions.
This is a breakout board for Freescale’s triple-axis MMA7260QT accelerometer. With a low power shut-down mode, high sensitivity output with selectable ranges (±1.5, 2, 4, and 6g), this was one of the very first sensors to market with three accelerometers built onto a single IC! Board comes fully assembled and tested with external filters installed.
The MMA7260QT is a 3.3V part and outputs an analog voltage for each of the three outputs. This voltage is in ratio to the measured acceleration and to the supply voltage (ratiometric). You will need some extra hardware to convert this analog signal to a usable digital one. Luckily, many uCs have a built in Analog to Digital converter.
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The electret microphone with an 100x amplifier allows you to submit audio signals directly to your arduino
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The EasyDriver V4 is a complete microstepping motor driver with
built-in translator. It is designed to operate bipolar stepper motors in
full-, half-, quarter- and eighth-step modes. The EasyDriver V4 includes a fixed off-time current regulator that has the ability to operate in slow, fast, or mixed
current-decay modes.Needs an external power supply of 7-30V DC
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This sensor is capable of measuring a distance ranged between 4 and 30 cm and delivers an according analog voltage.
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Breakout board for the Analog Devices 7746 capacitance sensor. Configured for two channels of single-ended capacitance input. Comes with an example touch sensor as well as long capacitance creating traces. Useful a as a capacitance measuring tool.
Product page link
Read this how to calibrate the sensor and use the example arduino code from here.
Read this and scroll down to "displaying the results" for the processing code.
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Small-sized 500mW speaker with an impedance of 8 ohm. Ideal for testing purposes.
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OpenLog is a simple serial logger and is able to talk to very large capacity (tested up to 16GB) SD cards. The whole purpose of this logger was to create a logger that just powered up and worked. OpenLog ships with a standard serial bootloader so you can load new firmware with a simple serial connection.
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A level converter with two in-/outputs to convert signal layers into lower/higher voltages. Works with 5V/3,3V/2,8V/1,8V levels. You need it when one device works with 5V signals but another in the same circuit needs 3.3V signals.
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A piezo is an electronic device that generates a voltage when its physically deformed by a vibration, sound wave, or mechanical strain. Use a 4,7M resistor.
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A simple PIR motion sensor with open-collector output. Needs an external voltage supply of 12V.
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This is a very simple to use RFID reader module. With a built in antenna, the only holdup is the 2mm pin spacing. Power the module, hold up a card, and get a serial string output containing the unique ID of the card.
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A simple 4W stepper motor, moving in 1,8° steps - 200 steps for a rotation. Use the EasyDriver V4 Stepper Motor Driver #005
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The LM35 series are precision integrated-circuit temperature sensors, whose output voltage is linearly proportional to the Celsius temperature. The LM35 thus has an
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This board is built around the VS1053 MP3 and MIDI codec IC, wired in MIDI mode. Simply connect a speaker/stereo/pair of headphones to the 1/8 inch stereo jack on the shied and pass the proper serial commands to the IC and you'll be playing music in no time!
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The 4-digit yellow display is configurable via serial or SPI interface. It can display all numerals, characters from A to F and the additional dots.
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The 4-digit green display is configurable via serial or SPI interface. It can display all numerals, characters from A to F and the additional dots.
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The Allegro ACS714 Hall-Effect current sensor. Typical applications include motor control, load detection and management, switch-mode power supplies, and overcurrent fault protection.
The ACS714 outputs the analog signal VOUT that varies linearly with the uni- or bi-directional AC or DC primary sampled current, IP , within the range specified. Product page link
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This is a motor shield for Arduino that will control two DC motors. Based on the L298 H-bridge, the Ardumoto can drive up to 2 amps per channel. The board takes its power from the same Vin line as the Arduino board, includes blue and yellow LEDs to indicate active direction, and all driver lines are diode protected from back EMF.
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BlinkM is a 'Smart LED': a networkable and programmable full-color RGB LED. It is designed to allow the easy addition of dynamic indicators, displays, and lighting to existing or new projects.
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The BMP085 is a high-precision, ultra-low power barometric pressure sensor. With an absolute accuracy of 2,5hPa and a noise level of down to 0,03hPa the BMP085 offers superior performance. Supply with 3,3V.
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The Cellular Shield for Arduino includes all the parts needed to interface your Arduino WITH an SM5100B cellular module. This allows you to easily add SMS, GSM/GPRS, and TCP/IP functionalities to your Arduino-based project.
All you need to add cellular functionality to your Arduino project is a SIM card (pre-paid or straight from your phone) and an antenna and you can start sending Serial.print statements to make calls, send texts and serve web pages! Product page link
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The Color LCD Shield provides an easy method of connecting the popular Nokia 6100 LCD to your Arduino. The board comes as shown with the 128x128 mini color LCD, as well as a backlight driver circuit and three momentary push-buttons.
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This ready to go sensor board delivers all necessary data to sense and recreate the light's color measured by the sensor chip. Wether you validate this data or reenact it by using a simple RGB LED.
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This is a small force sensitive resistor. It has a 0.16 inch (4 mm) diameter active sensing area. This FSR will vary its resistance depending on how much pressure is being applied to the sensing area. The harder the force, the lower the resistance.
When no pressure is being applied to the FSR, its resistance will be larger than 1M, with full pressure applied the resistance will be 2.5k. Use a 10k resistor as pull down.Product page line
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A sensor which delivers an analog voltage in relation to air humidity.
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The flex sensor changes its resistance depending on the amount of bend. It converts the change in bend to electrical resistance - the more the bend, the more the resistance value.
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This photo resistor changes its resitance from 1k (light) to 10k (dark). Use a 10k resistor as pull down.
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This is a basic breakout board for the FTDI FT232RL USB to serial IC. The pinout of this board matches the FTDI cable to work with official Arduino and cloned 5V Arduino boards (LilyPad). It can also be used for general serial applications.
You may plug it on the Lilypad. Product page link
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The GM10 is a very small brushed DC motor and gearbox combination. At 5 volts, the motor draws 27 mA, and the 81:1 gear ratio delivers 370 RPM
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This is a breakout board for the ST's dual-axis LPR5150AL gyro. The LPR5150AL measures angular velocity along the pitch and roll axes with a full scale of +/-1500 degree/s. Two different analog outputs are provided for both the x- and y- axes - one 1x amplified and the other 4x amplified
Supply with 3,3V. Product page link
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This is a very simple breakout board for the popular HMC6352. If you need simple, clean, degree resolution compass heading, this is the way to go.
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This kit comprises of two brackets and the associated fasteners. When connected to two servos, the final assembly allows two degrees of movement. Nearly anything within reason can be mounted on the end of the pan/tilt assembly - for example cameras or sensors.
Use the EasyDriver V4 Stepper Motor Driver to regulate the servos.
Product page linkNOTES:
small engine is not working well (maybe broken)
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This is a simple to use USB AVR programmer. It is low cost, easy to use, works great with AVRDude, and is tested extensively on a Windows desktop. For a detailed hook-up-guide check the product page link.
To use this programmer, attach to a Windows machine and install the drivers listed below. Open a command prompt. Assuming WinAVR (and therefore AVRDUDE) have been installed, type: avrdude -c usbtiny -B 1 -patmega328 -U flash:w:main.hex
Be sure to include the "-B 1" flag as this will significantly increase the programming speed! You may need to change -p flag to your appropriate microcontroller. You can setup a tool and hotkey in Programmers Notepad to do this automatically.
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This a custom designed module for the DS1307 Real Time Clock. The module comes fully assembled and pre-programmed with the current time.
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This is an ASK transmitter module with an output of up to 8mW depending on power supply voltage. The transmitter is based on SAW resonator and accepts digital inputs, can operate from 2 to 12 Volts-DC, with 434MHz transmitter operation.
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TV out from your Arduino.This shield has the same core circuit as the standard TellyMate, but re-arranged as an Arduino Shield. It listens to the Arduino's TX pin (Digital pin 1). Just plug it into your Arduino and use Serial.println() commands to output text onto your telly!
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This small module packs some power. With a 2mW maximum broadcast power we've been able to transmit up to 60ft with a simple 31 inch piece of wire (1/4 wave of 95MHz). Built upon the NS73M module, it is digitally tune-able from 87MHz up to 108MHz. Right and left channels are available for stereo broadcast as well!
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the LV-MaxSonar-EZ3 provides very short to long-range detection and ranging. It detects objects from 0-inches to 254-inches (6.45-meters) and provides sonar range
information from 6-inches out to 254-inches with 1-inch resolution. The interface output formats included are pulse width output, analog voltage output, and serial digital output -
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This is the smallest, most powerful, and most versatile GPS. The module can be configured to an amazingly powerful 10Hz update rate, with 14 channel tracking! With two serial ports, UART and SPI interfaces.
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This is a breakout board for the ISD1932, a multiple-message record/playback device. This single chip can record up to 64 seconds worth of voice messages. Microphone inputs and speaker outputs are all handled by the ISD1932
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The VoiceBox Shield can be mounted on top of your Arduino to give it access to all capabilities of the SpeakJet voice and sound synthesizer. The Voice Box Shield uses the SpeakJet chip to convert serial commands into a great robot-sounding voice.
see VoiceBox Shield Quickstart Guide
also see Using the TTS256 with the Voicebox Shield ( the TTS256 Text to Speech IC is a cool little chip that interfaces to the SpeakJet )
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The Redpark Serial Cable connects iOS devices to RS-232 serial devices. It is designed for use with iPhone 4, iPhone 3GS, iPod touch (fourth generation), iPad 2 and iPad.
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Faster, cheaper, smaller, better, right? The SN754410 Quad Half H-Bridge is just that. Capable of driving high voltage motors using TTL 5V logic levels, the SN754410 can drive 4.5V up to 36V at 1A continuous output current.
Notice the additional 9V input. Product page link
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A 4W hubmagnet for pulling ojects or something else. Requires a 12V power supply with at least 300mA, so don't connect this magnet directly to your Arduino!
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A 4W hubmagnet for pushing ojects or something else. Requires a 12V power supply with at least 300mA, so don't connect this magnet directly to your Arduino!
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A 10W hubmagnet for pushing ojects or something else. Requires a 12V power supply with at least 1A, so don't connect this magnet directly to your Arduino!
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A 10W hubmagnet for pushing ojects or something else. Requires a 12V power supply with at least 1A, so don't connect this magnet directly to your Arduino!
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Shrink your projects with a small ATTiny, which you can even power with two 1,2V batteries! The ATTiny45-10PU with 4k memory flash, operates with 10MHz and has 2 PWM channels besides 3 analog inputs.
Read this walkthrough and follow the instructions. Product page link
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Shrink your projects with a small ATTiny, which you can even power with two 1,5V batteries! The ATTiny85-20PU with 8k memory flash, operates with 20MHz and has 2 PWM channels besides 3 analog inputs.
Read this walkthrough and follow the instructions. Product page link
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The LilyPad Arduino is a microcontroller board designed for wearables and e-textiles. It can be sewn to fabric and similarly mounted power supplies, sensors and actuators with conductive thread.
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this component is currently not available.
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The Arduino Mega 2560 is a microcontroller board based on the ATmega2560
. It has 54 digital input/output pins (of which 14 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. -
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The Arduino Uno is a microcontroller board based on the ATmega328 with 14 digital input/output pins, 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header and a reset button.
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These little RFID glas tags with 12KHz read frequency can be read within a 10mm distance and are suitable for tiny applications. The non-reprogrammable 32-bit unique ID can be read with the ID-12 RFID reader.
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This 125KHz RFID tag is placed in a blanc card and has a 32-bit unique ID which can be read with the ID-12 reader.
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A simple button RFID tag with 16mm diameter that can be read within a 32mm distance. Suitable for clothes and thin applications. Unique 32-bit non-reprogrammable ID at 125KHz.
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This part allows you to connect a ø5mm shaft to a ø4mm shaft.
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This part allows you too connect a ø5mm shaft to a ø10mm shaft.
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Connect nearly anything to a ø5mm shaft.
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A small but powerfull stepper motor which needs only 2.7 Volts, so it's ideal for project driven by a battery. Use it together with part No. 079.
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Even smaller than part No. 064 but still very powerfull. Use with Part No. 079.
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Small sized stepper motor which can be used with part No. 078.
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A big solenoid. Be sure, that your power supply outputs at least 1.5 amperes at 24V.
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Arduino Duemilanove with ATmega 328 processor.
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Use the MaKeyMaKey to turn anything conductive into an human interface device. Common use: banana piano.
The inputs can also be remaped to other keys check this link
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This shield allows you to record and play sounds on a SD card with your arduino easily.
Plug this onto an Arduino Uno, and use the "WaveHC" (here) library to program it. Download the Library and put it into you Arduino Library folder. See down below for some example code that plays every WAV file on the sd-card.
Also, more examples can be found here .
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With this shield you can read and write data to RFID tags, like the cards or chips we have in the library ( parts No. 057, 058, 059).
For further Informations and some code examles click here .
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With this adaptor you can use any Arduino shields with your teensy 3.1.
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The teensy 3.1 is a more powerfull but smaller microcontroller than an Arduino. One of its biggest benefits is the 12-Bit DAC on pin 14 and the dedicated audio library, so teensy is the way to go for any audio project.
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These cells can be used to power very small electronic projects, or just to measure the intensity of light.
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These little bugs can be used to transfer serial data from one microcontroller to another in a fairly easy way.
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PIMP your PI! It's designed to fit nicely onto the Pi 1 Model A or B but also works OK with the Pi Zero, Pi 3, Pi 2 or Pi 1 Model A+ or B+.
For this Display to work, you need to install a new Kernel on the used Pi. Either you go with a fresh install of Raspian that already includes the Kernel, or you just run a script on your current installation. Find the complete guide here on the Adafruit Page.
For the full product page, click here.
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This is an older version of the raspberryPI.
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Small sized stepper driver with current limiter to prevent damage on the motor. The reference Voltage must be set according to the motor specifications!
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With this driver you can use low-voltage steppers rated from 2.5V to 10.8V. Before use set the reference voltage according to the motor specifications!
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With a hall effect sensor you can detect magnetic and electromagnetic fields.
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With this current sensor you can measure a current flow up to 15.5 amperes.
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This small stepper motor is very strong (but slow) because of the built in gearbox with a 1:64 ratio. It comes with the ULN2003 driver.
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A rotary encoder is like an endless knob.
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An opto coupler is used to achieve galavnic seperation of two circuits.
<a href="http://www.vishay.com/docs/83725/4n25.pdf“>Product page link
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As the name tells: This wire behaves like a muscle. When a certain current is applied the wire retracts like a muscle, and distracts when the current is removed.
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These RGB LEDs are adressable, so you can connect thousands of LEDs to only one single digital pin of your microcontroller. These can be used with the adafruit NeoPixel library, or FastLed library. Keep in mind that the 5V output of the arduino delivers max. 500mA, and one pixel set to full bright white (255,255,255) draws about 80mA, so if you use more than 5 pixels you should get an external power supply.
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This module can be used to store and read data on a SD Card with any microcontroller via SPI.
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Small display with 128x128 resolution and a microSD card slot.
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Small 2,5" tft display.
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Add an analog output to your project with this little converter.
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Connect serial RS485 devices to your computer.
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An easy way to add sound to your project. This Module can store up to 256 different audio tracks, which can be triggered by a serial message or by one of 18 dedicated trigger inputs.
For this Example just put two Music files onto the SD card and name them "001Track.mp3" and "002Track.mp3" without the quotation marks. The Triggershield can play up to 18 files, they should be named like the ones above, each number corresponding to the trigger with the same name. It takes everything from 4.5V to 12.0V DC. More information can be found here.
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Control up to 32 servos via serial RS232.
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Measure flexibility, vibration, impact and touch.
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Measure distances between 20 to 150 cm. Gives analog value. You should put a 10µF Cap across power and ground, to stabilize the output values.
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Measure distance between 10 and 80 cm. Gives analog value. You should put a 10µF Cap across power and ground, to stabilize the output values.
<a href="https://www.pololu.com/product/136“>Product page link
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Measure if Object is in the very short distance range between 0.5cm and 5cm. Beware, this will only point out that there is an object in that range, not how far it is away from the sensor. Has fast read out.
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Measure if Object is in the short distance range between 2cm and 10cm. Beware, this will only point out that there is an object in that range, not how far it is away from the sensor. Has fast read out.
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Very small and low voltage solenoid.
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a very big and strong Solenoid. Be sure that your power supply rates at least 24V and 2A.
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Standard servo motor which can turn 180° degree. There are different mounting plates available.
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You want to take your project to the next level? The Galileo is a complete PC running linux, but also has a bunch of GPIOs.
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this component is currently not available.
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A more powerfull microcontroller with many many in- and outputs. Install Teensyduino to use the Teensy together with the Arduino IDE.
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This Pretzelboard can be programmed like an arduino, but has Wi-Fi on board.
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You want to use a SMT component but are really bad at soldering? So here you go! Just push the component in the socket and use the easy accessible breakout pins.
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You want to use a DIP Component but are really bad at soldering? So here you go! Just put the component in the socket and use the easy accessible breakout pins.
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A very nice, old school looking 2x20 display.
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Control high voltage circuits using a microcontroller.
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This 18W mono amplifier works with 6V to 12V, so its the perfect candidate for a portable speaker.
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Turn any input voltage between 7 and 36 Volts into 5V output voltage (current limit: 1,5A)
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Here you describe the content further.
You can embed images like above, the image-files should
be contained within the folder of the markdown file.
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the PAM8403 is a 2×3W stereo class-D audio amplifier. the board ( HW-104 ) accepts a supply voltage ranging from 2.5–5.5V.
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TDA2030A is an mono 18W audio hi-fi amplifier. it is capable of driving a 4–8Ω speaker.
appart from the actual TDA2030A IC this board also comes equipped with a trimmer for volume control as well as terminal to screw in speaker wires. the board requires a minimum of ±6V and a can be driven by up to ±22V.
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PAM8302A is an mono 2.5W class D audio amplifier. it is capable of driving a 4Ω speaker at 2.5W or 8Ω speaker at 1.5W.
appart from the actual PAM8302A IC this board also comes equipped with a trimmer for volume control as well as terminal to screw in speaker wires. the board requires a supply voltage of 2.0–5.5V.
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This DAC Module is designed around the PCM5102A and provides a high-quality stereo audio DAC ( e.g for the Raspberry Pi ). The board features a 3.5mm stereo audio jack.
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This DAC Module is designed around the PCM5102A and provides a high-quality stereo audio DAC ( e.g for the Raspberry Pi ). The board features a 3.5mm stereo audio jack.
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the CJMCU-1334 board is designed around the UDA1334A audio DAC. the IC does not require a master clock signal.
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CAUTION! this component might be defect.
This pHAT provides a super affordable high-quality DAC for your Raspberry Pi. It pumps out 24-bits at 192KHz from the Raspberry Pi's I2S interface on its 2x20 pin GPIO header.
from pHAT DAC Pimoroni Product Page
this board is based on the PCM5102A DAC.
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this board features the PCM1802 ADC an audio stereo with 24-bit resolution and an I2S interface.
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this board features the MCP4725 IC, a singel channel, 12-bit DAC with I2C interface.
this DAC is not really well suited for audio applications.
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this board features the MCP4725 IC, a singel channel, 12-bit DAC with I2C interface.
- MCP4725 Breakout Board Sparkfun Product Page
- MCP4725 Digital to Analog Converter Hookup Guide
- MCP4725 datasheet
this DAC is not really well suited for audio applications.
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TFmini Plus is a single-point short-range LIDAR sensor.
- Operating range: 10–120cm
- Frame Rate: 1–1000Hz
- Interface: UART, I2C + GPIO
- FOV: 3.6°
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VL53L0X is a Time of Flight (ToF) distance sensor with a measuring range from 30–1000mm with an I2C interface.
- VL53L0X datasheet
- VL53L0X Adafruit Product Page ( updated version )
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VL53L1X is a Time of Flight (ToF) distance sensor with a measuring range up to 4000mm with an I2C interface.
- VL53L1X datasheet
- VL53L1X Pololu Product Page ( updated version )
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VL6180X is a Time of Flight (ToF) distance sensor with a measuring range up to 200mm ( or 600mm in reduced resolution mode ) with an I2C interface.
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VL6180X is a Time of Flight (ToF) distance sensor with a measuring range up to 200mm ( or 600mm in reduced resolution mode ) with an I2C interface.
- VL6180X datasheet
- VL6180X Adafruit Product Page ( updated version )
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the Sharp GP2Y0D810Z0F is a digital distance sensor which detects objects from 20–100mm.
note that this sensor only detects an object within the given range but does not return the actual distance.
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A list of terms that might be helpful to know about:
Audio Codec
In hardware a Audio Codec is an IC component that can convert analog audio signals into digital audio signals and viceversa. it is usually comprised of an audio ADC and an audio DAC and something complemented with an audio amplifier.
Most audio codecs communicate via I²S protocoll.
ADC
a Analog-Digital-Converter (ADC) is a component that is used to convert analog voltages into digital signals. it is often used but not exclusively to convert analog audio signals into digital audio sample data.
usually ADCs are single components packed as an IC, however there are ways to build ADCs from simple components ( see e.g resistor ladder ).
DAC
a Digital-Analog-Converter (DAC) is a component that is used to convert digital signals into analog voltages. it is often used but not exclusively to convert digital audio sample data into analog audio signals.
usually DACs are single components packed as an IC, however there are ways to build DACs from simple components ( see e.g resistor ladder ).
LIDAR
LIDAR is a method for determining distances by targeting an object with a laser and measuring the time for the reflected light to return to the receiver. LIDARs are faster and usually more precise than IR- or ultrasonic-based distance sensors.
I2C
I²C (Inter-Integrated Circuit), pronounced I-squared-C, is a synchronous, multi-master, multi-slave, packet switched, single-ended, serial communication bus invented in 1982 by Philips Semiconductor (now NXP Semiconductors). It is widely used for attaching lower-speed peripheral ICs to processors and microcontrollers in short-distance, intra-board communication. Alternatively, I2C is sometimes spelled I2C (pronounced I-two-C) or IIC (pronounced I-I-C).
from I²C@wikipedia ( note the inappropiate use of the master-slave terminology )
see this excellent I2C tutorial at sparkfun for further explanations.
I2S
I²S (Inter-IC Sound), pronounced eye-squared-ess, is an electrical serial bus interface standard used for connecting digital audio devices together.
from I²S@wikipedia
I²S is used by DACs, ADCs and audio codecs to transmit audio data at wide range of bit rates ( e.g 48000 Hz ) and bit depths ( 24-bit ).
only more powerful, more recent arduino boards are capable of I²S. other boards like Teensy, ESP, STM32-based boards and Raspberry Pi are well suited to connect with I²S devices.
I²S is somewhat realted to Serial Audio Interface (SAI) and Serial Peripheral Interface (SPI).
I²S is not to be confused with I²C.
MCU
a MicroController Unit (MCU) refers to a small computer on a single chip designed for embedded applications.
one of the best known MCU is the 8-bit Atmel ATmega328P which is used in e.g the Arduino Uno board. nowdays ARM-based MCUs with more memory, more peripherials and faster clock rates have become more popular ( e.g NXP IMXRT1062DVL6A in Teensy 4.0 or STM32F446RET in NUCLEO-F446 ).
SPI
the Serial Peripheral Interface (SPI) is an interface bus used to send data between small peripheries and microcontrollers.
see this excellent SPI tutorial at sparkfun for further explanations.
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The Physical Computing Library (PCL) is a curated collection of electronical components ( like sensors and actuators ) which students may borrow.
If you have questions or suggestions contact Physical Computing Library.
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Currently Physical Computing Library is responsible for the
[PCL].Each component has a button called
rentwhich creates an email you then only need to send.
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The PCL is in a perpetual state of flux; new components are added, exiting components break, links to external resources go dark. In order to improve the library and to keep it in the best possible shape, everyone is encouraged to help.
If a bug is discovered, if there is an idea for a new component or for the improvement of an existing one, please use the Issues tracking system on GitHub to file an issue.
You can also contact the library via mail.
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The easiest way to operate the library is to use github ( private repository requires invitation ).
In the web-interface you can create files and folders and change their contents.
If you want to use the library offline on your own computer thats not a problem either. (have a look at the contribution section)
Lend a Component to Someone
Every component has a
lent-folder in its root directory. These folders are special as every file in it is interpreted as a person currently lending the physical component. Usually these file-names should be named after the person who is lending and contain some extra information in it, but this is just a convention and can be done differently.Here is an example of such a "lent-file":
// filename: [component-folder]/lent/studentname.md email: ab@c.de // a way to contact that person ---- date: 20.1.2017 // a date when the component got handed outJust delete the lent-file if the component is not lent anymore.
Change the Availability
Every component has a markdown-file in its root-folder that is called
component.md.
In this file everything about the component itself is stored. There is one parameter which is calledavailablewhich controls how many of a kind of a component the pcl owns. If a component is available or not is calculated likeavailable > amount(lent)
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The [PCL] is designed to be easily contributed to.
This application is just representing the state of two git-repositories. To alter the source-code or the component-library commit your changes to the respective repositories. Your changes will automaticly updated.
Attention: Test all your code locally before you push code to the git repository. An error might brake this site.
Install the [PCL] locally
- Clone the repository to your local file-system.
> git clone --recurse-submodules git@github.com:digitalmediabremen/pcl-code.git - Disable cache invalidation plugin in
./site/config/config.php.// File: ./site/config/config.php ... c::set('cachebuster', false); ... - Start a php webserver (you need to have php installed)
> php -S localhost:8000 - Navigate to localhost:8000 with you web browser
Create and edit Components
the component-repository is a submodule of the pcl-code repository you just cloned.
locally its situated under(path of your pcl installation)/content/components.There is an
000-example-componentwhich you can duplicate and alter to your likings.
There are annotations for everything. The example component itself is not shown publicly.If you finished creating a new component or edited one, commit your changes (with an expressive commit message) and push your changes to github. You should see your changes reflected immediatly.
Create and edit examples
the example folder within a component is treated a bit differently from the other folders.
every folder within it is interpreted as an code example. source code files like.inoand.pdeare displayed inline with syntax highlighting. image files are treated like schematics and are also displayed inline.If you are having technical questions send an email to hi@leonat.de
- Clone the repository to your local file-system.
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