Monitor Battery Voltage At Remote Site
Running a remote KiwiSDR off grid? Want to monitor your battery voltage on your solar/wind system? Don't want to or can't use APRS? A simple voltage divider and an Arduino can measure voltage, format Morse code messages, and on/off key a small TTL "can" oscillator. Use the Kiwi to listen to the oscillator. I used a 10 K ohm and 100 K ohm resistor for the voltage divider. (Maximum input voltage on Arduino Uno analog pins is 5 volts. Edit the code if you use different resistor values). I used a contrib Morse code library from https://github.com/willvincent/ArduinoMorse, and merged code from a couple of other peoples projects. I have attached the code as a file attachment. In my testing I used a 10 MHz can that I happened to have, listened on the 30 MHz harmonic, and didn't even have to add a short antenna to the can.
Perhaps this could also allow content from other sources to be embedded in the page.
This may allow folks to provide more detail about the KiWi config and include other dynamic data such as telemetery, weather or perhaps even a webcam / video feed to be inserted.
Martin - G8JNJ