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If you aren’t clear as to how you can give your Otto the power to dance and move, talk here and the community will respond with solutions to get you started!

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A solution to protect the Arduino's build in voltage regulator from to much current drawn by the servos: I cut that +5 Volt track on the PCB back (see photo arrow), so that the V pins from the digital connectors are separated from the +5 Volt of the rest of the V pins and the Arduino's 5 Volt. You can now supply the Arduino from Battery at the Vin pins, and supply the servos over an extra voltage regulator (like an ubec) as shown on the photo too. The capacitors were a test, to stabilize / denoising the voltagesupply for... (More)
At least he doesn't fall over, seems to be well balanced. I like him. He's built and ready to get programs. Learned alot from you guys, by using this forum. Everyone's input is teaching me alot.
Thanks for everyone'
s help with this project. BDS.
What is the Battery Reader Library good for..?!

I connected the 3,3Volt pin to the analog pin A7:
- measure 3,3 V pin with digital multimeter says 3,24V

- My testing code gives:
Otto's real supply voltage = 4597 mV
voltage @pin A7 (Vcc 5,0V) = 3491 mV & w. real Vcc = 3209 mV
Otto Battery Voltage = 2.1596679687 V
Otto Battery Level = 0.0000000000 %

That seems like garbage for me,
but with 10 digits past the colon..

The Battery Reader should be used with the LiPo powersupply
but how should/does the monitoring of it work?
Otto9_TestSerial Sketch Preview Video