Two years later in 2020, I was accepted into Google Summer of Code, and during that time 2 people from the USA bought the kits. I was on cloud nine but the kits were crappy and the PCBs were designed at home so I knew I had to improve. With the feedback I got from these 2 customers, I started working on the next version of BioAmp which was BioAmp v1.5

During my internship at GSoC, I met Jason (Founder of BeagleBoard) and Drew (Founder of OshPark) who helped me a lot during my initial days. Drew fully sponsored the first batch of BioAmp v1.5 and within a week it was a hit on Tindie.

BioAmp v1.5 is a single-chip biopotential amplifier. It can record any biopotential signal non-invasively and doesn't require any microcontroller to sample the signal. You just plug a 9v Battery to board, Electrodes to the body, and an Audio jack to a Mobile/Laptop and you are ready to record signals like EMG, ECG, EOG, and EEG. You can record the signals on a pc using Audacity OR on mobile using Backyard Brain's spike recorder app. It's for learning purposes only and works best for EMG signals.