Found a lovely old calculator whilst in a second hand shop. The case was broken so I thought I’d make it a nice colourless acrylic case so you can see the internals. Check the vintage display and PCB traces! Can’t beat having a physical calculator to hand, even if it is relatively simple.
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — “If Work Is Digital, Why Do We Still Go to the Office?”
Wearables — Stiff upper lip
Electronics — Signature required?
Biohacking — BBC Biohacking: Technology and Health
Sorry, the comment form is closed at this time.