https://github.com/zargony/touch-n-drink
Hardware and firmware for cashless payment device for cold drinks at the aeroclub at EDLH
https://github.com/zargony/touch-n-drink
async embedded esp32 i2c nfc oled rust
Last synced: 4 months ago
JSON representation
Hardware and firmware for cashless payment device for cold drinks at the aeroclub at EDLH
- Host: GitHub
- URL: https://github.com/zargony/touch-n-drink
- Owner: zargony
- License: eupl-1.2
- Created: 2024-07-07T11:42:27.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2025-06-30T12:40:43.000Z (5 months ago)
- Last Synced: 2025-07-11T07:58:27.852Z (5 months ago)
- Topics: async, embedded, esp32, i2c, nfc, oled, rust
- Language: Rust
- Homepage:
- Size: 14.6 MB
- Stars: 8
- Watchers: 3
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE-EUPL
Awesome Lists containing this project
- awesome-esp-rust - touch-n-drink - Cashless payment device for cold drinks at a German aeroclub (Projects / `no_std`)
README
# Touch 'n Drink
Touch 'n Drink is a small device that reads NFC id cards of club members of the [Aeroclub (LSC) Hamm][LSC Hamm] and allows to pay for items like cold drinks offered at the clubhouse. Purchases are forwarded to accounting so members pay via their regular monthly invoices. We're located at airfield [EDLH] in Hamm, Germany.
## Features
- Fetches authorized users and list of articles for sale from [Vereinsflieger] API
- Allows users to identify with NFC tag or id card and purchase articles
- Optional event tracking using [Mixpanel] for usage analytics
- Connects to 2.4 GHz WPA2/WPA3 Wifi (IPv4, DHCP)
- Simple numeric keypad and large, bright OLED display
- Power supply using standard USB-C cable (PD not required)
- Ergonomically priced and widely available hardware components
- Magnetic wall mount
## Hardware
ESP32-C3, Keypad, OLED Display and NFC reader in a custom acrylic case. See [hardware] folder for details.
## PCB
Small custom PCB for the microcontroller and connectors to other components. Either manufactured or manually soldered to a perfboard. See [pcb] folder for details.
## Firmware
Written in [Rust]. See [firmware] folder for details.
## Contributions
If you like this project, want to use it at your club, or if you want to discuss ideas and suggestions, feel free to start a [discussion][discussions] or open an [issue][issues]. Feel free to fork this repository and base your work upon it. Please open a pull request if your changes or features are useful to a broad audience.
## License
Hardware licensed under the [CERN Open Hardware License (Strongly Reciprocal)][OHL]. Software licensed under the [European Union Public License (EUPL)][EUPL]. Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, shall be licensed as above, without any additional terms or conditions.
[hardware]: ./hardware
[firmware]: ./firmware
[pcb]: ./pcb
[discussions]: https://github.com/zargony/touch-n-drink/discussions
[issues]: https://github.com/zargony/touch-n-drink/issues
[EDLH]: https://skyvector.com/airport/EDLH/Hamm-Lippewiesen-Airport
[EUPL]: https://interoperable-europe.ec.europa.eu/collection/eupl/eupl-text-eupl-12
[LSC Hamm]: https://flugplatz-hamm.de
[Mixpanel]: https://mixpanel.com
[OHL]: https://cern-ohl.web.cern.ch/home
[Rust]: https://www.rust-lang.org
[Vereinsflieger]: https://www.vereinsflieger.de