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.

Last 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.