Shared Projects by AcidicTooth

Simple JTAG adapter, may work to connect ESP-PROG to a D1 Mini32 board.

(NOTE: YOU MUST VERIFY DESIGN YOURSELF BEFORE USE.)

Fits even with Ethernet Shield

Fits with TwilightLord’s ethernet shield. May also fit with other ethernet shields.

Normally-open solder jumper for 3v3

The ESP-PROG does not appear to require this to be connected. Check your debugger board to see if they require this (e.g., to detect which level signal to output).

JTAG header may be soldered on either top or bottom

Due to space constraints, the center two pins are shared, so only one JTAG header can be attached per board.

Used pins are marked with silkscreen

• Circle for the four JTAG signal pins: TDI, TDO, TCK, TMS
• Square for ground pins (note: only on bottom of board until v1.5)
• Dashed-circle for optional 3v3 pin

Other Parts (BOM)

A through-hole 1.27mm JTAG connector (keyed IDC box header) is the only non-obvious part. An example description might be CONN HEADER VERT 10POS 1.27MM or similar. Two examples:

• LCSC: Wcon 3130-10SG0BK00T1
• Digikey: CNC Tech 3220-10-0100-00

You likely also want standard 0.1" pins or sockets, to allow you to stack this board onto an existing ESP32 D1 Mini board. Specifics will vary by use case, so those 0.1" headers / sockets are not listed here.