---
product_id: 202682587
title: "Lamprey Absolute Rotary Encoder-Hollow Bore, 10-bit, Analog/UART/PWM"
brand: "221 robotic systems"
price: "€ 3.28"
currency: EUR
in_stock: true
reviews_count: 5
url: https://www.desertcart.hr/products/202682587-lamprey-absolute-rotary-encoder-hollow-bore-10-bit-analog-uart
store_origin: HR
region: Croatia
---

# 3.3v/5v Flexibility 10-bit Precision Customizable Setup Lamprey Absolute Rotary Encoder-Hollow Bore, 10-bit, Analog/UART/PWM

**Brand:** 221 robotic systems
**Price:** € 3.28
**Availability:** ✅ In Stock

## Summary

> 🔧 Unlock Your Creativity with Precision Engineering!

## Quick Answers

- **What is this?** Lamprey Absolute Rotary Encoder-Hollow Bore, 10-bit, Analog/UART/PWM by 221 robotic systems
- **How much does it cost?** € 3.28 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/202682587-lamprey-absolute-rotary-encoder-hollow-bore-10-bit-analog-uart)

## Best For

- 221 robotic systems enthusiasts

## Why This Product

- Trusted 221 robotic systems brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **DIY Friendly Kit:** Comes as a kit with all necessary components for hassle-free assembly.
- • **Precision Engineering:** Experience 10-bit accuracy for unparalleled performance.
- • **PWM & UART Integration:** Seamlessly integrates with PWM (1000uS-2000uS) and UART (5v) for diverse applications.
- • **Versatile Voltage Options:** Compatible with both 3.3v and 5v systems for ultimate flexibility.
- • **Customizable Magnet Target:** Includes a large bore magnet target for easy attachment to rotating surfaces.

## Overview

The Lamprey Absolute Rotary Encoder is a high-precision, 10-bit sensor designed for versatile applications. It operates at both 3.3v and 5v, supports PWM and UART communication, and includes a customizable magnet target for easy installation on rotating surfaces. Perfect for DIY enthusiasts and professionals alike, this kit provides everything you need to get started.

## Description

A 10-bit absolute encoder specifically designed with a large hollow bore. This sensor is great for swerve drive steering axis applications or anywhere you need to directly measure your output without being at the shaft end.The sensor comes in kit form and includes the sensor board, magnet and 10-pin cable. The supplied magnet target has an ID of 1.23" and is designed to pilot on the flange of a standard 1/2" bearing. Glue it to any rotating surface or 3D print a custom hub.Features-Custom large bore magnet target-Wide axial sensing range...0.15"-0.5"-Configurable analog output voltage-Multiple output sources-Magnet and hall sensor user-calibration for increased performanceOutput - All outputs generated simultaneously-10-bit Analog, 3.3v or 5v-10-bit PWM, 1000uS-2000uS-UART, 5vInput-5vAdvanced User Features-The sensor supports both 5v and 3.3v analog outputs. To change between the two options triple click the button. A solid blue LED indicates 3.3v out and a solid green LED indicated 5v out.-Push and hold the button for one second to set a new zero point. The red LED will flash briefly when the sensor crosses this point.-Push and hold the button at start-up to erase any calibrations performed and restore factory defaults-The sensor generates a UART stream that can be accessed using an FTDI-USB cable or directly with a 5v logic level micro like an Arduino Uno.The UART stream defaults to floating point absolute position in degrees. You can change the outputs and other sensor features by sending the following commands into the sensor via a Serial terminal.d - output in degrees (default)r - output in radiansa - verbose output showing several system variables5 - 5v analog output3 - 3.3v analog output0 - Set zero point

Review: Flat mount on metal surface shorts pins…. 3.3/5v mode changes with touch on exposed pins - Grrr. It’s natural to mount the flat side against a metal surface…unfortunately the cable pins are exposed on that side and short the encoder unless a spacer or insulated is added. Not a good design feature. Nothing in the information warns against this. Caution… the output mode can switch from 3.3 v to 5 v with just a finger touch on exposed cable pins either while holding the chip or touching a cable breakout pin. This is very disconcerting since I’m connecting to a 3.3 volt chip
Review: Great Device! - This encoder is extremely easy to use. The analog output makes it perfect to work with an Arduino Uno. I had it up and running in no time. My only complaint is that pitch of the connector is not 2.54mm, which made it harder to wire in my case. Overall I have been happy with it, and I just ordered a second one.

## Features

- 10-bit Analog, 3.3v or 5v, 10-bit PWM(1000uS-2000uS), UART(5v)
- Custom large bore magnet target, Wide axial sensing range...0.15"-0.5"
- The sensor comes in kit form and includes the sensor board, magnet and 10-pin cable. The supplied magnet target has an ID of 1.23" and is designed to pilot on the flange of a standard 1/2" bearing. Glue it to any rotating surface or 3D print a custom hub.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08265QLTX |
| Customer Reviews | 3.8 3.8 out of 5 stars (5) |
| Date First Available | November 30, 2019 |
| Item Weight | 1.58 ounces |
| Manufacturer | Team 221 LLC |
| Package Dimensions | 5.61 x 4.25 x 0.4 inches |

## Images

![Lamprey Absolute Rotary Encoder-Hollow Bore, 10-bit, Analog/UART/PWM - Image 1](https://m.media-amazon.com/images/I/71jiclNNIoL.jpg)
![Lamprey Absolute Rotary Encoder-Hollow Bore, 10-bit, Analog/UART/PWM - Image 2](https://m.media-amazon.com/images/I/41d9sDblgnL.jpg)
![Lamprey Absolute Rotary Encoder-Hollow Bore, 10-bit, Analog/UART/PWM - Image 3](https://m.media-amazon.com/images/I/419kHdhz0IL.jpg)
![Lamprey Absolute Rotary Encoder-Hollow Bore, 10-bit, Analog/UART/PWM - Image 4](https://m.media-amazon.com/images/I/41Bs63GCTWL.jpg)
![Lamprey Absolute Rotary Encoder-Hollow Bore, 10-bit, Analog/UART/PWM - Image 5](https://m.media-amazon.com/images/I/51TFZam0FuL.jpg)

## Questions & Answers

**Q: What is the sampling rate of this sensor?**
A: The analog measurements and calculations are run as fast as the Atmega328 chip will run.

The cycle loop time is around 240 microseconds.

You can see this measured dT if you monitor the sensors serial output.

**Q: During calibration, I only see orange led and nothing else. How do I calibrate?**
A: The instructions are on the PDF attached to this product page.  A solid orange light indicates that you have power.

As you rotate the magnet across the sensor you will get additional lights indicating the field strength.

Once you have rotated it many times and you have a good green or blue light you can press the button once and it will have a basic calibration.

**Q: I only see one button? Where is the other one? In instruction it says two buttons?**
A: The unit sold on Amazon has a single button.  The Andymark version has a second button that replicates the function of the single button and is easier to reach when installed in their swerve module.

The sensors are identical otherwise.

**Q: Can this sensor return absolute position? i.e. If I turn the sensor on in some random orientation, will the sensor know what position it is in?**
A: I should further clarify that the sensor reports an absolute angle with respect to a single rotation.  For example, once the sensor crosses 360 degrees it then starts reporting again at 0.  It is not a multi-turn device.

## Customer Reviews

### ⭐⭐⭐ Flat mount on metal surface shorts pins…. 3.3/5v mode changes with touch on exposed pins
*by Q***N on June 16, 2021*

Grrr. It’s natural to mount the flat side against a metal surface…unfortunately the cable pins are exposed on that side and short the encoder unless a spacer or insulated is added. Not a good design feature. Nothing in the information warns against this. Caution… the output mode can switch from 3.3 v to 5 v with just a finger touch on exposed cable pins either while holding the chip or touching a cable breakout pin. This is very disconcerting since I’m connecting to a 3.3 volt chip

### ⭐⭐⭐⭐⭐ Great Device!
*by K***N on November 17, 2020*

This encoder is extremely easy to use. The analog output makes it perfect to work with an Arduino Uno. I had it up and running in no time. My only complaint is that pitch of the connector is not 2.54mm, which made it harder to wire in my case. Overall I have been happy with it, and I just ordered a second one.

### ⭐⭐⭐ Very noisy
*by Z***R on August 13, 2021*

The sensors seem to be really noisy. In the attached picture I am not rotating at all. I am just in a static position, but still you can see that the readings are jumping around. Any ideas or suggrestions on how to get rid of this noise?

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-26*