The only difference is that the SOUT (Signal Output – pin 17) of the the first IC needs to be connected to the SIN (Signal Input – pin 26) of the second IC and so on. * by Dejan Nedelkovski, */ # include 'Tlc5940.h' void setup () Code language: Arduino ( arduino ) Controlling more then one TLC5940įor connecting more then one of these ICs in series we can use the same circuit schematics as shown above. * Arduino and TLC5940 Tutorial - Simple Example Read the comments in the code for understanding how the functions works. Here’s a simple code that I made for this tutorial for controlling 16 LEDs using this library.

Once we download and install the TLC5940 Arduino Library made by Alex Leone we can use his “BasicUse” demo example for understanding how the control the outputs of the IC. So according to the diagram, for controlling LEDs which require 20mA current we need a 2K resistor. As we will use the TLC5940 Arduino Library made by Alex Leone we need to connect the IC to the Arduino according to his library configuration or using the following circuit schematics: Arduino and TLC5940 Wiringįor controlling the TLC5940 we need to occupy 4 pins of your Arduino Board. As an Amazon Associate I earn from qualifying purchases.

TLC5940 LED Drivers…………… Amazon / AliExpressĭisclosure: These are affiliate links.

Ultra Bright Red LEDs…………… Amazon / Banggood / AliExpress.

The Voltage pin will always be high (which can be 5v or 3.3v on this board, depending on the output level switch). Its basically just a male version of the corresponding standard GPIO pin. You can get the components for this tutorial from any of the sites below: The Signal pin will carry the actual output, which may be high or low at any given time. With this we can extend the Arduino’s PWM capabilities to more than 16 outputs, for example 32, 48, or 64 PWM outputs and still use the same 4 pins used by the Arduino Board as for controlling one TLC5940 IC.

Driving Capability – 0 mA to 120 mA (VCC > 3.6V) – 0 mA to 60 mA (VCC < 3.6V)ĭaisy chaining is a great feature which means that we can connect multiple TLC5970 ICs together in series.

Arduino nano expansion pinout