BOM -

  • 2 x cheap "esp-12 adapter" white boards
  • 16 x pogo pins
  • pin headers
  • a piece of FR4 one-sided board
  • double-sided proto board (off the shelf part)
  • kapton tape

Steps to create -

  • First board:
    • desolder the resistors on the bottom of the board
    • stick kapton tape on left-side holes of a white board
    • solder 8 pogo pins to right-side pads of the board
    • align and re-solder pins as precise as possible
    • TEST CONTINUITY! And avoid any bridges.
    • cover the left-side pogo pins above the left-side pads with flux
    • solder the left-side pads by adding a bit of solder on top of pogos
    • solder a pin header to left-side VCC hole on the bottom
    • solder pin headers to right-side holes
    • TEST CONTINUITY AGAIN! Yes, again.
  • Second board:
    • desolder the resistors on the bottom of the board
    • stick kapton tape on right-side holes of a white board
    • solder 8 pogo pins to left-side esp-12 pads of the board
    • align and re-solder pins as precise as possible
    • TEST CONTINUITY! And avoid any bridges.
    • cover the right-side pogo pins above the right-side pads with flux
    • solder the right-side pads by adding a bit of solder on top of pogos
    • solder a pin header to right-side GND hole on the bottom
    • solder pin headers to left-side holes (reset .. vcc)
    • ** solder the VCC pin to the right pad of the desoldered resistor
    • TEST CONTINUITY AGAIN! Yes, again.
  • cut-out a piece of perf. board so that 10 pins are available in the space between the two white boards -- TEST with your pogo pins first.
  • remove plastic headers from bottom of pogo pins on the white boards
  • push through the pins to the single-side of perf. board that has copper
  • solder white boards to be flush (especially on the single header pin side) with the perf. board
  • re-inforce the bottom side of the board with a double-sided proto board
    • stick some pin headers and solder to give it a good grip on the bottom of the single-sided board.
  • add pin headers on the sides and bridge these on the bottom with headers connected to white boards
  • TEST CONTINUITY!
  • cut off any protruding pins
  • ENJOY!