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RotaryDesign

Arrow 2 - bike light battery powered

by RotaryDesign Sep 9, 2018
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Hi, where have you bought the red 5V led strip 140mm long? :(

Just buy any length of 5v strip.These strips have cut marks so you can cut them down to any size.

It looks like you're soldering directly to a Lithium battery. It's not something recommended unless you like kerplosions. Lithium has lots of stored energy that doesn't take much to release. Just ask Samsung.

If you file down battery ends you can solder it very quickly without transfering too much heat, its just little thin wire, I did it many times before without any issues. I can see what you mean but I think it becomes issue when you trying to solder something bigger that require more heat.

Hallo You can take a picture in which position body main print??

Hi, I posted picture with print position on main page.