So first Dev-Post,

I am building a signal recorder for electromyography (EMG) signals, which are essentially the electrical impulses that muscles produce when you contract or relax. I am recording those signals through electrodes on an arm that will be connected to a circuit I am currently working on.

My plan is to:

1. Create and test the circuit
2. Convert it into a PCB that I can manufacture to be quite small
3. Integrate it into a bunch of my own projects
4. Make it open source so other people can use it in the future

So far, two stages have been completed:

1. Stage Zero: 2.5V bias circuit
2. Stage 1: INA (instrumentation amplifier) circuit and setup
3. Stage 2: 20Hz notch filter