BackYard Brains is seriously dedicated to open source. The shield schematics, arduino code and spiker visualization PC prog and iOS app are all provided.
There are not many EEG/EKG’s that can come in at this price range ($150) and show a usable data stream.
Most EEG and EKG options have been designed to communicate directly to computers and phones apps. This kit is going through an Arduino so controlling real world motors, relays and lights can be done without a computer.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.