Ultra‑compact polarity‑reverser board for N20‑size brushed DC gear‑motors
Check out the manual here
MicroFlip is a thumb‑sized breakout that lets you drive a 3–12 V N20 gear‑motor in either direction with a single slide. A rugged DPDT switch wired in an H‑pattern swaps both motor leads, while an on‑board 0 .1 µF / 120 Ω RC snubber suppresses brush noise and protects the contacts from arcing.
Drop MicroFlip between your motor and your motherboard, and enjoy instant bidirectional control—no microcontroller, no firmware, just flip to drive, flip back to rewind.
Top view of the MicroFlip PCB
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Bottom view of the MicroFlip PCB
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- True DPDT reversal – slide switch swaps both motor leads for reliable forward ↔ reverse operation.
- Compact footprint – fits inside most micro‑robot and lock‑actuator housings.
- Up to 1 A stall current – short traces keep resistive losses low.
- Integrated RC snubber – 0 .1 µF X7R + 120 Ω ½ W series network mounted right at the motor pins.
- Flexible I/O – large, castellated pads accept 22–26 AWG silicone leads or 2‑pin JST‑PH connectors.
| Folder | Contents |
|---|---|
hardware/ |
EasyEDA schematic (.json), PCB layout (.json), and Gerber ZIP |
docs/ |
3D board renders, schematic PDF, datasheets |
production/ |
Pick‑and‑place CSV, interactive BOM HTML |
Gerbers are generated with JLCPCB/EasyEDA defaults (2‑layer, 1 oz copper, HASL‑RoHS).
Maximum ratings: 12 V nominal, 1 A peak. For higher currents use a MOSFET H‑bridge instead.
TBD
Feel free to open issues or PRs with suggestions!
TES - Tröndle Embeeded Systems
We also have Full GBP kits available.
- Pulsar3D
- Pulsar3D also has Full GBP kits available.
- Fork the repo, create a feature branch.
- Submit a PR with a clear description of what the change does and why...
If you enjoy my work, consider supporting me by buying me a coffee!
Released under the GPL-3.0 license – see LICENSE for details.
