Features:
- 16-wire ribbon cable connection to the RGB matrix
- Mounting holes for securing the shield to the enclosure
- Options for both PTH and SMD (0805/SOD-323) parts for all parts
- Multiple JST-XH (2.54mm) connectors for I2C sensors and for GPIOs (use for push-buttons, for example)
- Exposed JTAG and PROG connectors, for use with debugging/programming via ESP32-Prog (although they are a bit too close together in v0.3 :) )
WARNING!! Do not use v0.1 of the boards! I have made several mistakes while designing them (reversed OE/LAT pins on the matrix connector, and put in a WAY too thin power supply trace). As a result, I was unable to get the ESP32 to even boot when connected to these boards.
v0.3 has been tested, and works reliably.
These are the components that you will need to populate the PCB:
- R1, R2 (I2C pull-up resistors) - 4k7 ohm, PTH or 0805 SMD
- C1,C2,C3 (decoupling capacitor(s)) - either 100uF PTH, or 2x47uF SMD
- D1 (protection diode, prevents the matrix from pulling too much power from your USB port) - any Schottky will work. For example: BAT85 (PTH), or 1N5819 (SOD-323)
- P1 - ribbon cable connector, 2x8 pin
- GND_T/5V_T - 2xScrew terminal blocks, 5.0mm
- power connection - 2.1/5.5mm PCB connector, or 7.62mm screw terminal block
- I2C and GPIO connectors - JST-XH 2.54mm, 2 and 4-pin
And, of course, you will need the ESP32 board - it has to be the D1 Mini version:
Images of the completed board:
The board with (a minimum of) components soldered on:
Connected to the matrix and the ESP32 module:
