The VPRG pin on the TLC can be connected to ground when the standard “greyscale” PWM register should be used, as opposed to connecting this pin to the Arduino's digital pin 8 to use the dot-correction functions in the library.
In addition, the TLC's DCPRG should be connected to V CC (rather than to GND) to disable the on-chip EEPROM dot-correction and enable the dot-correction from the DC-register in the device that can later be used with the Arduino library. Generally, the MOSI pin is connected to the TLC SIN, SCK to SCLK on the TLC, OC1A to XLAT, OC1B to BLANK and OC2B to GSCLK. Please read the comments to each scheme, as there are a few mistakes in the showed pin setup. The tlc5940arduino Arduino library provides additional information (e.g., connecting an Arduino Mega). Depending on your Arduino, you will have to look up the according pins that have to be connected. The wiring of the TLC5940 will occupy 4 PWM pins on the Arduino for the serial communication to the chip.
0 kommentar(er)
