DIY credit card reader with Teensy, we made this using a mag stripe reader and a Teensy – it automatically fills out our virtual terminal page for the shopping cart to take on site purchases.
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Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — Samsung & Batteries
Wearables — Vintage cosplay resources
Electronics — Hummm… 60Hz noise in your amplifier driving you nuts?
Biohacking — Hykso: Punch Tracking Sensors
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