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Firmware and source code for the Universal Battery Charge Controller [1410719A.HEX] PIC16F88-I/P microcontroller firmware (HEX file) plus ASM source code for the Universal Battery Charge Controller. The same software can be used for the revised version published in June 2022. Cat No SC5251. Price: Free Files: 12 24V battery charge controller with Lithium (1410719A).zip (ZIP contains .hex and .asm files; 18.3KB) Related to: Project: Have you got a dumb battery charger in your garage? (December 2019 [print issue] [online issue]) Project: Revised Battery Charge Controller (June 2022 [print issue] [online issue]) Other items relevant to these projects: Revised Battery Charge Controller: Revised Intelligent Battery Charge Controller PCB [14107192] ($7.50) PIC16F88-I/P programmed for the Universal Battery Charge Controller [1410719A.HEX] ($10.00) Relay - 1A DPDT 5V DC coil (EA2-5NU) ($3.00) IPP80P03P4L-07 high-current P-channel Mosfet ($2.50) Revised Battery Charge Controller PCB pattern (PDF download) [14107192] (Free) Universal Battery Charge Controller front panel artwork (PDF download) (Free) Have you got a dumb battery charger in your garage?: Universal Battery Charge Controller PCB [14107191] ($10.00) Si8751AB 2.5kV isolated Mosfet driver with integral power supply ($10.00) Modified source code for the Universal Battery Charge Controller [1410719A.ASM] (Free) Universal Battery Charge Controller PCB pattern (PDF download) [14107191] (Free) 12/24V Battery Charge Controller front panel artwork and drilling template (PDF download) (Free)