https://w.electrodragon.com/w/index.php?action=history&feed=atom&title=ESP32_DMA_RMPESP32 DMA RMP - Revision history2026-06-04T23:35:39ZRevision history for this page on the wikiMediaWiki 1.37.2https://w.electrodragon.com/w/index.php?title=ESP32_DMA_RMP&diff=30432&oldid=prevChao: /* V2 New Features */2021-03-30T05:26:17Z<p><span dir="auto"><span class="autocomment">V2 New Features</span></span></p>
<p><b>New page</b></p><div>== Hardware Install Guide ==<br />
* Supported boards are devkitc and pico V4: https://www.electrodragon.com/w/ESP32_Boards<br />
<gallery><br />
File:ESP32 DMA RMP-01.png | Pin definition <br />
File:ESP32-RGB-I2S-SCH.png | Schematic <br />
</gallery><br />
Plug in the ESP32 devkitc or PICO board<br />
* the most inside 2 rows of 20 pin are for the socket of the PICO board <br />
* the medium 2 rows of 19 pins are for the socket of the DEVKITC board<br />
* the most outside 2 rows of 19 pins are the extra lead outs for the DEVKITC board, no use<br />
<br />
Install to the Panel<br />
* Please check the HUB75 direction in attached image, the gap on the board's hub75 should match to the gap on the panel's hub75<br />
* Interface HUB75's gap to Panel HUB75's gsp<br />
<br />
<br />
== Note ==<br />
* Double check if the board plug into the socket well or not. Otherwise it won't work.<br />
<br />
== Software ESP32 DMA Demo Code Setup ==<br />
* Demo code github: https://github.com/mrfaptastic/ESP32-HUB75-MatrixPanel-I2S-DMA<br />
* Pin definition based on file: ESP32-HUB75-MatrixPanel-I2S-DMA.h<br />
<br />
RGB1 and RGB2 <br />
#define R1_PIN_DEFAULT 25<br />
#define G1_PIN_DEFAULT 26<br />
#define B1_PIN_DEFAULT 27<br />
<br />
#define R2_PIN_DEFAULT 14<br />
#define G2_PIN_DEFAULT 12<br />
#define B2_PIN_DEFAULT 13<br />
<br />
<br />
<br />
A / B / C / D / E<br />
#define A_PIN_DEFAULT 23<br />
#define B_PIN_DEFAULT 19<br />
#define C_PIN_DEFAULT 5<br />
#define D_PIN_DEFAULT 17 // '''via jumper to PICO IO22, for PICO please change to IO22'''<br />
#define E_PIN_DEFAULT -1 // IMPORTANT: Change to a valid pin if using a 64x64px panel.<br />
<br />
LAT / OE / CLK<br />
#define LAT_PIN_DEFAULT 4<br />
#define OE_PIN_DEFAULT 15<br />
#define CLK_PIN_DEFAULT 16 // '''via jumper to PICO IO21, for PICO please change to IO21'''<br />
=== Pin D and CLK ===<br />
Pre-connected<br />
* Pin D pre-connected to ESP32 IO17 and PICO pin IO22<br />
* Pin CLK pre-connected to ESP32 IO16 and PICO IO21<br />
=== Setup for Line_E ===<br />
Connect three-way jumpers before to use<br />
* For Devkitc, three-way jumper to IO22 or IO18<br />
* For PICO, three-way jumper to IO10 or IO9<br />
<br />
== V2 New Features ==<br />
* Fully support DEVKITC and PICO all pins<br />
* Add LDR sensor port reserved<br />
* Add signal buffer to transfer 5V signal to panel <br />
* Seperated lead out I2C port IO22 IO21<br />
* Seperated lead out PICO extra pins IO9 IO10 IO37 IO38<br />
* Use switch to swap between devkitc and PICO, which only swtich pins CLK and D<br />
PICO CLK = IO32<br />
PICO D = IO33<br />
DEVKITC CLK = IO16<br />
DEVKITC D = IO17<br />
* E line change to IO18 <br />
<br />
[[category: RGB Matrix Panel]]</div>Chao