Author: gdevic

Nov 10, 2021 Sinclair ZX81 lives on!

Nov 9, 2021 RS232 and Arduino

Nov 9, 2021 RS232 Interface

Nov 9, 2021 Parallel Port Logic Analyzer

Nov 9, 2021 Software Scope using a Sound Card

Feb 23, 2026 Accuracy of Arduino’s ADC

Nov 9, 2021 Etching the PCB: Copper etchant calculator

Feb 23, 2026 Ambient Weather WS-2080 hang fix

Nov 9, 2021 Fixing convergence on TV

Feb 23, 2026 Building a Custom Picture Frame