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A project log for Battery Supply for DSO138 portable Scope

Turning a cheap DSO kit into a cheap automotive scope

Tron9000Tron9000 04/06/2017 at 20:370 Comments

So I got round to ordering a DCDC boost converter and a battery level indicator. Unfortunately i ordered the wrong battery level indicator, I order one for a 5S pack not a 1S, so I have 2 options: 1. order a new one (more expense and another month on a slow boat from china) 2. modify the one I have.

I briefly looked at the board and it appears to be based on the LM339 comparator, so am expecting just a few resistor values need changing and they are 0603 size, so not completely impossible to rework.

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