Car‑Plug Voltmeter: Battery Health Checker
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A compact DIY voltmeter that plugs into your car’s power socket and shows the battery voltage at the push of a button.
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Informacje o modelu
- Źródło
- Printables
- Kategoria
- Vehicles & Machines
- Licencja
- Creative Commons — Attribution — Noncommercial — Share Alike
Hi,
A few weeks ago, the battery in my old car suddenly died. The car and battery are both quite old, I don’t drive very often, and when I do it’s usually only short distances. That’s probably why the battery failed. During winter everything still seemed fine, and then one day the car simply wouldn’t start.
The battery had dropped to a deep‑discharged state at around 9.6 V. I bought a new one, but I wanted a simple way to keep an eye on the battery’s charge level and overall health. So, using some spare parts I had lying around, I built this car‑plug voltmeter. I designed the case, soldered everything together, and now with a single press of a button I can instantly check the battery voltage.
Print Settings:
Layer height: 0.25 mm (0.4 mm nozzle)
Perimeters: 4
Infill: 10% gyroid
Solid layers: 3 top and 3 bottom
Supports: yes
Print orientation: as shown in the pictures
Material: PLA
Materials:
- printed case parts
- old car battery plug
- a push button
- some wires
- 2 screws M3x12 mm
- 3-digit 7-segment voltmeter display (7-segment display size: 22,60 x 14,00, 2x 3,00 mm holes)
used module: https://www.roboter-bausatz.de/p/mini-voltmeter-digital-mit-led-anzeige
Happy printing & Make the world a better place, one print at a time.