LED projects

Arduino PCA9685 example

The PCA9685 is an I²C-bus controlled 16-channel LED controller optimized for Red/Green/Blue/Amber (RGBA) color backlighting applications. Each LED output has its own 12-bit resolution (4096 steps) fixed frequency individual PWM controller that operates at a programmable frequency from a typical…

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HDC1008 and OLED project

In this example we will connect a HDC1008 sensor to our ARduino and display the output on a 128 x 32 I2C OLED LCD display, you could use a different type of LCD or a bigger OLED variety but that is…

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Arduino and MCP23017 example

The is a 16-bit, general purpose parallel I/O port expander for I2C bus applications. The 16-bit I/O port functionally consists of two 8-bit ports (PORTA and PORTB). The MCP23017 can be configured to operate in 8-bit or 16-bit modes. Lets…

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Arduino and a TM1638 module

When I was browsing various web sites to see what electronic components to buy one day I noticed some interesting little kits comprising of switches, LEDs and a couple of 4 digit seven segment displays saw I decided to purchase…

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8×8 LED matrix example

This example switches on all the LEDs on a 8×8 LED matrix, the matrix is controlled by a MAX7219   Typically you will get these in kit format or they may be assembled, here is a picture of a typical…

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RGB Led example

A common anode RGB LED is three one colour LEDs (one red, one green, and one blue) housed in a single package. A common anode RGB LED is the most popular type but you can also get common cathode types…

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Flash an LED

The most basic project that you can start with is the capability to flash an LED, this is the common ‘hello world’ type of program you can write and run on your arduino. Most Arduino’s have an LED attached to…

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