A simple, proof of concept, car-parking sensor that will tell you when you're too close to the wall (or other obstacles). This project has it's origins here (Dutch). The schema is a bit messy; I currently don't have a decent circuit editor... Sorry 'bout that!
With a little effort this circuit can be extended with another HC SR-04 sensor and LED, but I'll leave that up to the reader.
You'll need:
- 2x HC SR-04
- 2x RGB LED (or 2x red LED and 2x green LED
- 4x 220Ω resistor
- 1x Wemos D1 mini
- 1x Breadboard
- Some wires
- USB cable to program the D1 mini or a 3.3V/5.0V power supply once programmed
Recommended:
- Multimeter for troubleshooting
- Project box
Click the image below to play the video
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