https://www.noisebridge.net/wiki/DreamTeam/Brainduinov2
Commands are sent by write ASCII characters to the bluetooth serial device. The brainduino echos back the lower-case compliment of the command sent 15 times followed by a return carridge. For example:
Client writes 'S' to bluetooth serial device
If the command is recieved by the brainduino, the brainduino writes 'sssssssssssssss' + '\r' back over bluetooth
| ASCII | Result |
|---|---|
| I | Bypass the MAX7480 (8th-order butterworth filter) |
| P | Set 200HZ low-pass corner frequency of MAX7480 (8th-order butterworth filter) |
| O | Set 150HZ low-pass corner frequency of MAX7480 (8th-order butterworth filter) |
| Q | Set 100HZ low-pass corner frequency of MAX7480 (8th-order butterworth filter) |
| Z | Set 50HZ low-pass corner frequency of MAX7480 (8th-order butterworth filter) |
| M | Set 40HZ low-pass corner frequency of MAX7480 (8th-order butterworth filter) |
| S | Set 32HZ low-pass corner frequency of MAX7480 (8th-order butterworth filter) |
| V | Set sample rate to 500HZ |
| W | Set sample rate to 250HZ |
| B | Set sample rate to 190HZ |
| A | Impedance check on with +1ch |
| T | Impedance check on with -1ch |
| C | Impedance check on with +2ch |
| D | Impedance check on with -2ch |
| E | Impedance check off |
| F | Generate test signal with frequency = 12HZ |
| G | Generate test signal with frequency = 28HZ |
| H | Generate test signal with frequency = 111HZ |
| J | Generate test signal with power = 0.1 |
| K | Generate test signal with power = 1 |
| Y | Set 4 channel mode |
| X | Set 2 channel mode with 500HZ sample rate |
| U | Set 2 channel mode with 250HZ sample rate |