Bear with me, I'm not a EE and I have to google the functions for most ICs.
Came across a color switching a 15 segment common anode RGB LED circuit on instructables using 6 pairs of 74HC595 and ULN2803 drivers. I got it to work on a breadboard, but I want to switch it up and use 3 TPIC6C595 registers to drive 7 segments. I've read that the two are interchangeable, but I can't get the TPIC to sink the LEDs. I found the original project, called RainBoard, http://www.instructables.com/id/RainBoard-RGB-LED-Rainbow-Fader, but it hasn't had any comments in over a year and my kid keeps asking when her light will be done. :sweat_smile:
I've mapped the pinout differences between the 74HC595 and the TPIC6C595 and made the adjustments on the breadboard, but still no luck.
Any help would be appreciated.
Here's the pinout mapping I came up with: 7C-TPIC 1 - 4 2 - 5 3 - 6 4 - 11 5 - 12 6 - 13 7 - 14 8 - 16 9 - 9 10 - 7 11 - 15 12 - 10 13 - 8 14 - 2 15 - 3 16 - 1
The original code uses ShiftPWM library, but I've seen other TPIC examples using SPI.