The Linux Duracell CPU load monitor is a program that drives a Duracell or Energizer on-battery tester to display the CPU load of a system.
It can be easily adapted to display other things that can use a slow bar graph kind of display that varies between 0% and 100%.
Instructions to hack a AA-battery tester and turn it into a computer display are included in the distribution.
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Requirements:
· An AA Duracell battery with a tester. Energizer testers should work too, but I haven't tried. I got a pack of Duracell Ultra M3 batteries, product code LR6-MN1500.
· 1 x 3V power cube
· 1 x 2 KOhm resistor
· 1 x 4.7 KOhm resistor
· 1 x 10 KOhm resistor
· 1 x 4N25 or CNY17 optocoupler
· 1 x BC547A or 2N2222A transistor
· 1 x TIP41C transistor
· 2 x 1N4004 diode
· 3 x ON/OFF switche
· 1 x female DB9 connector
· 1 x breadboard (get it somewhat large if you build the simple display)
· 1 x clear plexiglas CD case
· 1 x Socket-7 heatsink (if you want to build the more precise display)
· 4 x 10x3mm wood screws (if you want to build the more precise display)
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