ESP32S3 HUB75 Can you tell me what contacts to use?

[itspecsap]

Hello everyone. I have an ESP32-S3-N16R8 44pin.

I'm using firmware WLEDMM_14.7.1_esp32S3_16MB_PSRAM_M_HUB75.bin and I can't figure out which pins to use to connect via HUB75.
I tried using such combinations and without success:

gpio.r1 = 42; gpio.g1 = 41; gpio.b1 = 40; gpio.r2 = 38; gpio.g2 = 39; gpio.b2 = 37;
gpio.lat = 47; gpio.oe = 14; gpio.clk = 2; gpio.a = 45; gpio.b = 36;gpio.c = 48;gpio.d = 35; gpio.e = 21;

and

gpio.r1 = 1; gpio.g1 = 2; gpio.b1 = 42; gpio.r2 = 41; gpio.g2 = 40; gpio.b2 = 39; gpio.e = 38; gpio.a = 45;
gpio.b = 48; gpio.c = 47; gpio.d = 21; gpio.clk = 18; gpio.lat = 8; gpio.oe = 3;

I also used the standard pinout for ESP32S3 from the ESP32-VirtualMatrixPanel-I2S-DMA library, and it didn't work either.
But if I load the AuroraDemo example from the ESP32-VirtualMatrixPanel-I2S-DMA library, it works with the standard pinout.

connection from the library for ESP32S3
#define R1_PIN_DEFAULT 4
#define G1_PIN_DEFAULT 5
#define B1_PIN_DEFAULT 6
#define R2_PIN_DEFAULT 7
#define G2_PIN_DEFAULT 15
#define B2_PIN_DEFAULT 16
#define A_PIN_DEFAULT 18
#define B_PIN_DEFAULT 8
#define C_PIN_DEFAULT 3
#define D_PIN_DEFAULT 42
#define E_PIN_DEFAULT -1 // required for 1/32 scan panels, like 64x64. Any available pin would do, i.e. IO32
#define LAT_PIN_DEFAULT 40
#define OE_PIN_DEFAULT 2
#define CLK_PIN_DEFAULT 41

I also tried different variations on firmware WLEDMM_14.7.1_esp32S3_8MB_S and all without success.

[softhack007]

Hi,

The firmware build you mention ( WLEDMM_14.7.1_esp32S3_16MB_PSRAM_M_HUB75.bin) uses the "MoonHub" adapter pinout

WLED-MM/wled00/bus_manager.cpp

Lines 790 to 796 in b25af92

	#if defined(MOONHUB_S3_PINOUT)
	USER_PRINTLN("MatrixPanel_I2S_DMA - T7 S3 with PSRAM, MOONHUB pinout");
	// HUB75_I2S_CFG::i2s_pins _pins={R1_PIN, G1_PIN, B1_PIN, R2_PIN, G2_PIN, B2_PIN, A_PIN, B_PIN, C_PIN, D_PIN, E_PIN, LAT_PIN, OE_PIN, CLK_PIN};
	mxconfig.gpio = { 1, 5, 6, 7, 13, 9, 16, 48, 47, 21, 38, 8, 4, 18 };
	#else

[softhack007]

Another build that should run on your board is WLEDMM_14.7.1_esp32S3_8MB_PSRAM_M.bin

HUB75 Pinout:

WLED-MM/wled00/bus_manager.cpp

Lines 797 to 814 in b25af92

	USER_PRINTLN("MatrixPanel_I2S_DMA - S3 with PSRAM");
	mxconfig.gpio.r1 = 1;
	mxconfig.gpio.g1 = 2;
	mxconfig.gpio.b1 = 42;
	// 4th pin is GND
	mxconfig.gpio.r2 = 41;
	mxconfig.gpio.g2 = 40;
	mxconfig.gpio.b2 = 39;
	mxconfig.gpio.e = 38;
	mxconfig.gpio.a = 45;
	mxconfig.gpio.b = 48;
	mxconfig.gpio.c = 47;
	mxconfig.gpio.d = 21;
	mxconfig.gpio.clk = 18;
	mxconfig.gpio.lat = 8;
	mxconfig.gpio.oe = 3;
	// 16th pin is GND

If you want to try a nightly build: this firmware bin was recently renamed to "esp32S3_8MB_PSRAM_M_opi".