Editing Smart Battery Charger with Graphical Data Logger
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Purpose: | Purpose: | ||
− | *A smart | + | *A smart battery charger ( one component of which is a PC ) for charging, discharging... NiCad, Nickel Metal, and perhaps other battery types. |
*Graphical record of the charge current and voltag. | *Graphical record of the charge current and voltag. | ||
*A complete log of activity is provided both to the screen and to a log file. | *A complete log of activity is provided both to the screen and to a log file. | ||
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==Collaborator Anyone? == | ==Collaborator Anyone? == | ||
− | Anyone want to help with this project? I have plans for the hardware, but software could support a lot of variants, and you may prefer a different hardware configuration. The Java software I will work on untill it works well enough, but I could use testers, and once it works well enough the code will be open and available for others to | + | Anyone want to help with this project? I have plans for the hardware, but software could support a lot of variants, and you may prefer a different hardware configuration. The Java software I will work on untill it works well enough, but I could use testers, and once it works well enough the code will be open and available for others to enhnace. |
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== OverView == | == OverView == | ||
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=== Analog Charger Hardware === | === Analog Charger Hardware === | ||
− | Circuit overview. An | + | Circuit overview. An op amp and darlington transistor will be used as a constant current source. A second op amp will amplify the current signal for input to the PIC. A third op amp will amplify and condition the voltage signal for the PIC. The op amps will be powered by a single 5 volt power supply. Input voltage will be between 12 and 25 volts so that many cell batteries can be charged. To reverse the current for discharge 2, 2 pole relays will be used. The relays could be replaced by a double pole double throw switch ( the user, not the software would have to be used to throw the switch ). |
Board design will be in Eagle, single sided for Toner Transfer. | Board design will be in Eagle, single sided for Toner Transfer. | ||
− | + | Schmatic ( premiminary ) | |
[[Image:SC_C.png]] | [[Image:SC_C.png]] | ||
− | Board ( | + | Board ( premiminary ) |
[[Image:SC_B.png]] | [[Image:SC_B.png]] | ||
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*Off the shelf BitWacker Software should be fine if used with BitWacker. | *Off the shelf BitWacker Software should be fine if used with BitWacker. | ||
− | *Will have a BoostC implementation for the | + | *Will have a BoostC implementation for the PIC16F977A and similar |
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=== PC Software === | === PC Software === |