# Bourns Absolute Encoder (EAW0J-B24-AE0128L)

**Type:** Product page · **SKU:** COM-15036 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/bourns-absolute-encoder-eaw0j-b24-ae0128l.html ([markdown](https://core-electronics.com.au/bourns-absolute-encoder-eaw0j-b24-ae0128l.html.md))

The Bourns Absolute Encoder is a digital control knob that provides 128 unique results evenly spaced around a full circle. It is designed as a control panel knob...

## Pricing

- **Price:** $20.40 (inc GST) — $18.55 AUD, exc GST
- **Quantity discounts:** 5+ $17.99 (exc GST) · 25+ $17.62 (exc GST) · 100+ $16.87 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 17 and Aug 24.

## Description

The Bourns Absolute Encoder is a digital control knob that provides 128 unique results evenly spaced around a full circle. It is designed as a control panel knob but can be adapted for other uses. This can be a good alternative to using a potentiometer and analog pin, as this allows for full-turn and multi-turn operation.

It differs from the more common incremental rotary encoder which has only two or four values in a rotation and is designed to measure full rotations and direction. This measures *angles.*

The Bourns ACE-128 Absolute Contacting Encoder is among the smallest and cheapest gray code absolute encoder available.

**Includes**

- Nut and washer (9mm mounting hole)
- Solder jumpers
- Pull-down resistors for address pins
- 0.1" and Grove header locations
- locations for through-hole resistors for I2C pullup
- ¼ in. round shaft (slotted end)

**Features**

- 128 rotary positions
- Memory of last position before power-off

**Documents**

- [Datasheet](https://core-electronics.com.au/attachments/localcontent/ace_38169d89a99.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/c/o/com-15036-1.jpg)