> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# 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.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=COM-15036:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/COM-15036:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## 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)