openbci wifi shield diy

here is how i built my own wifi shield for the openbci cyton and ganglion boards. the total cost was less than €10.

see the schematics.

* 1 esp8266-12 module
* 1 esp8266-12 adapter
* 2 push buttons
* 3 blue leds
* 1 ncp1117 voltage regulator
* 1 jst connector
* some resistors and capacitors
* pin headers and a piece of veroboard

on the white adapter board i first removed the 0K resistor link in the middle (R2). then i cut the two tracks that run from VCC to the left hand side 10K resistor (R3). next i soldered on a ncp1117 on the back side (not visible in the photo) and finally added two 100nF caps.

then i mounted the esp+adapter on a vero board, added male pin headers and the other components and wires.

IMG_20180626_160641

IMG_20180626_160755

it looks very rough but works great. here are instructions on how to upload firmware and how to use it.