RGB Led Heltec 32 v2

[Dant3s]

Hi :wave:

Im tryng to setup the RGB Led, im using a breakout ws812 and a Heltec 32 v2.

Cheking the config.h (https://github.com/markqvist/RNode_Firmware/blob/1.57/Config.h) and the guide (step 7 https://unsigned.io/guides/2023_01_14_Making_A_Handheld_RNode.html ) I see that the io pin for the data in the board is other than the IO12 Right? 25 (internal) or 36/37 (for external).

Im getting that right? (Try all of them and the RGB is still off. RGB works since touching Data with the finger (i know.. i know...) the led starts. Tested both 3.5 and 5v since the led is 5v. Same.

Try it with 1.56 and 1.57.

Reference: https://escapequotes.net/wp-content/uploads/2021/02/WIFI_LoRa_32_V2-Heltec-pinout-diagram-scaled.jpg

Led: https://www.digikey.com/htmldatasheets/production/1960378/0/0/1/ws2812-breakout-hookup-guide.html

is possible to know what im doing wrong ? :(

[markqvist]

I can't tell from your post, did you enable the RGB LED (HAS_NEOPIXEL) for the Heltec board in Config.h?

[Dant3s]

Ah! looks like that is what is missing. Didn't notice that by default HAS_NP in false? and the Heltec entry don't have that if HAS_NP (I would assume NP is neopixel?)

#if defined(EXTERNAL_LEDS)
    const int pin_led_rx = 36;
    const int pin_led_tx = 37;
#else
    const int pin_led_rx = 25;
    const int pin_led_tx = 25;

Would assume that should be inside an if, right? :

#if HAS_NP == false

This will require to compile the firmware into the board ? There is no config with rnodeconf?

[markqvist]

That's correct, HAS_NP is the config directive for enabling the RGB LED. It's off by default since having it on disables the other LEDs.

I could add a Heltec build with RGB LEDs enabled if there's interest, but right now you'd have to compile it yourself with those changes.