TM1814 with Arduino

Other Hardware LEDs and Multiplexing
1

A follow-up to the @ConnorN post (RGBW TM1814 on Arduino Uno)

We have bought the TM1814 short LED strip and tried the modified Adafruit Neopixel code published in the ConnorN's topic. Our setup:

Arduino Uno, connected differently during the programming phase and during testing.

During testing, we disconnected the USB cable and replaced it with the 12V regulated PSU connected to the barrel socket in the Arduino board and with the two power inputs of the LED strip. We've connected the data output pin from the Arduino to the LED data input.

What we've observed is the cycling of all the colours of the LED strip, that seems to be pre-programmed to the TM1814 chip (it persists even when we disconnect the data connection).

Can you advise us, what we may be doing wrong?

2

You can try the Adafruit Neopixel code without any modification. If that works, the problem may exist in your code.

3

The data structure of WS2812 and TM1814 are different. I would be surprised if the Neopixel library is working.

Please provide a schematic of how you wired everything up.

4

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