Build a phone using Arduino.
Budget: $30 – $250 USD
Make a Blackberry RIM 950 style phone using SIM800C and Arduino chip.
The phone should be able to send SMS and be used without a gsm line like a walkie-talkie. It should have a solar panel on the back and be able to charge the phone. You can check this video https://www.youtube.com/watch?v=Hsf1dmJm38M&t=2s
The phone should be able to send SMS and be used without a gsm line like a walkie-talkie. It should have a solar panel on the back and be able to charge the phone. You can check this video https://www.youtube.com/watch?v=Hsf1dmJm38M&t=2s