this is a really great product which has potential to save lots of lives, great part is it is open source so anyone can built it, i am building one in hope that it will be working prototype built in india with locally sourced parts so we can save lives. i would be adding all details as i walk this path so you can learn from my mistakes and make your one better.
if anyone wants to join or can provide any help feel free to ping me +91 8377941881