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Not sure if this is "good" advice, but this would make for a very appealing kickstarter: cool gadget with very useful functionality for popular activities (musi

Not sure if this is "good" advice, but this would make for a very appealing kickstarter: cool gadget with very useful functionality for popular activities (music festivals, hiking, skiing) that could even help in an emergency. It hits a lot of the right notes. Possible that when you're further along you can have a kickstarter for a commercial version that's officially created by the open-source project. The more (mutually compatible) devices out there, the better the mesh, right?

punkgeek 7y ago
There are already a couple of companies doing similar kickstarters I think. But we want this to be a non profit open source project for fun. We are using a GPL license, but if someone wants to eventually sell devices (as long as they obey the GPL) with our code we think that's great.
- davidzweig 7y ago
  The ESP32 draws quite a lot of current when running BLE (without Wifi), unless that's been fixed recently. IIRC, the TTGO boards have poor low-power design that will kill the 18650 battery in a few days, no matter what you do, that could perhaps be fixed with a small modification though. I have a hardware design that might be an interesting starting point. It's based around nrf52 (Cortex M4F with BLE and nice SDK), 400mah battery, microphone, speaker, 3*4 RGB LED matrix, gyro/accelerometer, NFC. Very small device, 35mm across. Can extend the top of the PCB, add a small OLED screen and a LORA radio. Hitting $30 price point shouldn't be a problem. Email in profile :-) https://photos.app.goo.gl/qUyrRYDrtu2SHsHR9 https://photos.app.goo.gl/qUyrRYDrtu2SHsHR9