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Duties Provide +5v power to the computer Provide charging current for the Ni-Cd battery LED outputs for Power on, Battery Present, Charging, Charge complete Parts LM2576 (TI?, 3A?) lm2576hv.pdf ATTiny84 Ni-Cd Monitor ATtiny24A-44A-84A-DataSheet-DS40002269A...

Duties Convert the stock keyboard into USB Parts Teensy 4.1 Original Keyboard References Keyboard Matrix @ Connector Top Down B D F H J 2 4 6 8 X A C E G I K 1 3 5 7 X X ----------- ----------- 1 3 5 7 X X A C E G I K 2 4 6 8 X B D F H J ...

Duties Emulate a DS1307 real time clock chip Optionally implement extra ram set/recall Optionally implement DS3231 alarms, temperature Parts Reuse the Teensy 4.1 that's handling Keyboard input CR1220 Battery (recycled from 380XD repair)

Duties Actually handle the computer parts of the computer Parts Either (Depending on need for HDMI and PCI) Raspberry Pi Compute Module 3 Raspberry Pi Compute Module 4

Path One: Keep the current LCD Duties If recycling the current LCD, will need to ensure proper power is available and do one of two things: Convert the video signal from HDMI to 4-bit monochrome LCD signal Write a driver that is similar in structure to SPI/I2...

Duties Make available the original type of ports the original device had, in roughly the same positions These ports consist of: 1 Parallel Port 1 External 9-pin Serial Port 1 Internal Serial Port, for the modem Parts While still undecided, some candidates ar...

Duties Have a way to allow the computer to "dial in" to a network using bluetooth, and a OpenWRT "base station". Optionally, have the board be designed to use a similar connector, layout, and size of the original modem, so that this part can be used by others ...

Duties Map the physical floppy drive to usb Parts TEAC FD-335HF 26-pin floppy drive Arduino Compatible Microcontroller Drive References Pin Signal Pin Signal 1 +5V 2 Index 3 +5V 2 Drive Select 5 +5V 2 Disk Change 7 NC 2 Ready 9 HD OUT 2 Mot...