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Add Feedback to Your Gearmotor with Magnetic Encoder Pair Kit for 20D mm Metal Gearmotors, 20 CPR, 2.7-18V
The Magnetic Encoder Pair Kit for 20D mm Metal Gearmotors, 20 CPR, 2.7-18V adds position and speed feedback to matching Pololu motors so your project can move from open-loop control to measured motion.
It is useful for odometry, wheel speed control, closed-loop drive systems, and motion experiments.
Why you'll love it
- Pair kit: includes two encoder boards + two magnetic discs (enough for 2 motors)
- Wide-voltage digital outputs: power the sensors at VCC = 2.7–18V ; A/B lines are pulled up to VCC (10k pull-ups) and actively driven low…
- Cleaner signals at stop points: built-in hysteresis helps avoid “chatter” when the motor stops near a transition
- Compact footprint: designed to fit within the 20mm rear cross-section on 3 sides; connection side extends about 3mm past the motor’s…
- Breadboard-friendly pads: six pads on 0.1" (2.54mm) pitch for headers or direct wire soldering
- Quadrature output gives direction + speed
What you can build
Use it for wheel odometry, wheel-speed feedback, closed-loop speed control, and motion experiments with supported Pololu motors.
Compare encoder kit options
| Kit | Resolution | Fits | Voltage |
|---|---|---|---|
| Encoder Kit for 20D mm Metal Gearmotors, 20 CPR, 2.7-18V | 20 CPR | 20D metal gearmotors | 2.7-18 V |
| Encoder Kit for Micro Metal Gearmotors, 12 CPR, 2.7-18V | 12 CPR | Micro metal gearmotors | 2.7-18 V |
| Encoder Kit for Mini Plastic Gearmotors, 12 CPR, 2.7-18V | 12 CPR | Mini plastic gearmotors | 2.7-18 V |
| Encoder Kit with Side-Entry Connector for Micro Metal Gearmotors, 12 CPR, 2.7-18V | 12 CPR | Micro metal gearmotors | 2.7-18 V |
| Romi Encoder Pair Kit, 12 CPR, 3.5-18V | 12 CPR | Romi motors | 3.5-18 V |
Technical specifications
| Product | Magnetic Encoder Pair Kit for 20D mm Metal Gearmotors, 20 CPR, 2.7-18V |
|---|---|
| Brand | Pololu |
| Category | Encoder Upgrade Kit |
| Operating Voltage | 2.7-18 V |
| Encoder Resolution | 20 CPR |
| Rated Voltage | 18 V |
| Support | Official Pololu product search and support resources linked below |
Official resources
Find this product on Pololu | Pololu support and resources
What’s in the box
1 × Magnetic Encoder Pair Kit for 20D mm Metal Gearmotors, 20 CPR, 2.7-18V
Frequently Asked Questions
Will this work with Arduino or similar boards?
Yes, with the correct supply voltage and interface wiring for the specific product.
Yes, with the correct supply voltage and interface wiring for the specific product.
Is this good for robotics projects?
Yes. Pololu parts are widely used in robots, motion systems, and embedded prototypes.
Yes. Pololu parts are widely used in robots, motion systems, and embedded prototypes.
Where can I find official docs?
The description below links to official Pololu search and support resources for this item.
The description below links to official Pololu search and support resources for this item.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
Compatibility & downloads
// downloads
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