Tag Archives: NiMH

Playing with a Photon

Figure 1:  A Photon-powered project has been added to my collection. Click to enlarge. Figure one shows the idea in a physical mock up.  Actually, the parts are real, they just haven’t been soldered together yet.  So, we have a … Continue reading

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Rehab for the second “Homemade” Tablet

Recently, I decided to give the engine inside the latest “homemade” tablet project a rehab.  I decided to add an internal battery supply, but to make it a decidedly different kind of thing this time around.  As with the first … Continue reading

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Homemade Tablet – External Battery Case

The batteries were pretty exposed, lying on the kitchen table with their wires all hanging out. Of course I had to fix that situation. Today, the mailman brought the clear top box I’d been waiting for, which helped to put … Continue reading

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Homemade Tablet – Getting the Battery Parameters

The start up voltage was higher today (10.35 volts) than it was yesterday (9.65 volts). That may point to the batteries being a little more discharged than I thought, coming out of the shipping box. If that’s the case, then … Continue reading

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Homemade Tablet – Fun with Auxiliary batteries

Figure 1: Working up a new battery configuration. The new batteries arrived in a small but heavy package. I pulled the brand new Imedions out of the box, and tested them for voltage. All but one was OK out-of-box with … Continue reading

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Homemade Tablet – More Battery Hacking

The batteries were purchased without much thought, as they were extremely inexpensive. There is high variability in NiMH cells, depending upon manufacturer. Some simple math shows that I am not extracting the full capacity of the batteries while running the … Continue reading

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