Power Source for v7 (manual microscope variant)

Hi everyone,

I’m planning to build the v7 manual microscope but the illumination power source has got me stumped. I have bought the illumination kit from taulab, so I have the illumination PCB.

The assembly instructions say “The illumination PCB needs to be connected to a constant current power supply (20-50mA). Alternatively a resistor can be added in the cable, as in the [LED workaround], and then connected to Ground and 5V.”

The manual microscope does not use either Sangaboard or Raspberry Pi, so I don’t have anything to plug the PCB in. What power source should I use here? I can imagine one of the following possibilities:

1. I actually do need a sangaboard, it is just missing from the list of materials needed
2. I need to buy a battery and a battery clip, and solder a suitable resistance between it and the PCB (but I don’t have any experience doing that so I would appreciate more precise instructions :))
3. I can use the webcam to power the PCB.

Thanks for your help!

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