Abbo63: Arduino nano clone acting as a USB serial interface to a HP C4103A IR transceiver unit, running Martin Hepperle's Red Eye protocol decoder software for HP 82240A/B IR printer emulation.
Abbo63: HP C4103A IR transceiver unit plus homemade Red Eye protocol decoder unit based around an Arduino Nano clone (running Martin Hepperle's decoder software).
Abbo63: Close-up of 8-way Mini DIN socket on my Arduino based Red Eye protocol decoder. The socket and it's flying lead came from an RS232 extension cable for an Apple Mac Mini.
Abbo63: Front of HP Prime package (HP Product G8X92AA#B1S)
Abbo63: Back of HP Prime package (HP Product G8X92AA#B1S)
Abbo63: Front of packaging for an old "new in box" TI-89 Titanium.
Abbo63: Back of packaging for an old "new in box" TI-89 Titanium.
Abbo63: Leaked batteries for old "new in box" TI-89 Titanium.
Abbo63: Casio fx-CG50 UK packaging
Abbo63: Casio fx-CG50 UK packaging
Abbo63: Casio fx-CG50 UK packaging
Abbo63: Texet Albert² calculator purchased from eBay.
Abbo63: Texet Albert² calculator purchased from eBay.
Abbo63: Texet Albert² scientific calculator