Little Helper: an ARM powered mobile device

Phillip Schuster has build a portable device featuring some ports to connect stuff like sensors and other circuits and some menu driven user interface to trigger various modules doing tests, reading data etc.

Working in my lab with electronics I came across different little challenges once in a while, and noticed that I am missing tools to handle them efficiently. Just a quick list, I am sure you could add various items to the list:
What is the I2C address of a chip? (yeah, you can work through the Datasheet but the Datasheets I know don’t have an outline topic for this. It’s somewhere hidden deep in text somewhere)
What is the voltage range of the analog sensor in my current environment (take a photo sensor)?
Generating PWM or DAC signals
Does this circuit do anything?
Does this circuit do anything specific?
Reading serial output of your Microcontroller/Arduino project

Little Helper: an ARM powered mobile device – [Link]

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