ESP32-S - Control Board

This is a multi purpose interface board for use with ESP32-S modules.

Features include:

• Supply voltage up to ~20VDC (note that up to 40VDC is possible by replacing with higher voltage capacitors on C1 and C2)
• Includes 5v and 3.3v regulated output
• PWM via 4xSOT23 MOSFETs (such AO3400A) - Q5-8
• 4 GPIOS to a TC4469 driver IC. This IC can drive larger MOSFETs - Q1-4 with TO-252 or TO-220 package arrangements. The "DRV" jumper selects the TC4469 supply voltage (either 5v regulated or the unregulated VCC supply)
• 3x 5v non-inverting (via SN74HCT14N) outputs (TTL3 header)
• Breakout headers for other GPIO purposes. These should be self explanatory.

Note that the BOM only includes the power supply and bare-minimum SMDs required to drive the ESP32.

MOSFETs, through hole components, etc are not included in the BOM by default.

Photo shows a manufactured board in a 115x90x55mm enclosure.

Note that cheap versions of this enclosure seem to have some variation in their size and the board might require a small amount of filing down. I've had to file down one board for a cheap enclosure however two other boards fitted more expensive and better quality versions of the enclosure fine.