hallard
commented
4 years ago Thank for the head up, as for today, I'm using this code that works on ESP8266 and ESP32 with this shield.
#if defined(ESP8266)
#define P_LAT 16
#define P_A 5
#define P_B 4
#define P_C 15
#define P_D 12
#define P_E 0 // not needed on 64x32
#define P_OE 2
#elif defined(ESP32)
#define SPI_CLK 18
#define SPI_MOSI 23
#define SPI_MISO 19
#define SPI_SS 5
#define P_LAT 26
#define P_A 22
#define P_B 21
#define P_C 5
#define P_D 19
#define P_E 17 // not needed on 64x32
#define P_OE 16
#else
#error "Target not supported, please select a ESP8266 or ESP32 Board"
#endif
and yes on my latest displays I needed to add this line also
//added for slow muxer
display.setMuxDelay(1,1,1,1,1);
not per se an issue just more an information for ppl want to use MH-ET LIVE D1 mini. Took me a couple of nights to figure it out and to get it to work. The general pin layout is the same but there is a tiny bit of information missing, the IOs are completely different to the WeMos. Neither https://github.com/dragondaud/myClock nor the PxMatrix library https://github.com/2dom/PxMatrix are working out of the box. Even SPI interface is on different IOs. I tried to summarise my modification in the attached pdf. Nothing fancy and i had to modify PxMatrix.h but it works now. i use a p4 64x32 Matrix display e.g. https://de.aliexpress.com/item/32380311346.html and those ESP32 https://de.aliexpress.com/item/32815530502.html This display seems to have a slow muxer so i had to use setMuxDelay, which is not part of the standard Arduino library v1.3.0 (installed form the library manager). The GitHub version v1.5.0 didnt work for me at all, so i added only the SPI and setMuxDelay-Modifications to the v1.3.0 also attached. then of course i needed to modify display.h and myclock.ino
MH-ET Live Minikit pinout and mods for LED Matrix.pdf PxMatrix_mod.txt You can use those files as reference. rename and replace PxMatrix.h with my mod, if you have the same issue