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  1. TI-89 Hacking log: Entry 1


    • Replace the batteries with LiPo, tp4056+protection (is the protection needed?) with small slit on the bottom for charging
    • Add microcontroller, with Ti-Link interface
    • Switch to turn on/off Ti-Link connection with the microcontroller
    • Program to check battery level, charging status, passthrough UART of MCU
    • Switch to turn on …