Case study
Vending machine controller
A vending controller with pulse sensing, a 3.5 inch SPI display, and a LilyGo A7670 for the link.
Pulse sense → controller → 3.5 inch SPI display → A7670
- Record
- Described in my own project notes. No public repository.
- Stack
- A7670, SPI display, Pulse
- Hardware
- LilyGo A7670 · 3.5 inch SPI display · Coin mechanism · Thermal printer
What I built
A vending machine controller built to take the place of a pulse-based payment module. It senses pulses, shows status on a 3.5 inch SPI display, and uses a LilyGo A7670 for the link. The same unit talks to a coin mechanism and a thermal printer.
There is no public repository and no separate Upwork review for this title.