> **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

# TT Motor Encoder (Pack of 2)

**Type:** Product page · **SKU:** ADA3782 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/tt-motor-encoder-pack-of-2.html ([markdown](https://core-electronics.com.au/tt-motor-encoder-pack-of-2.html.md))

Plastic gear-box motors (also known as 'TT' motors) are an easy and low cost way to get your projects moving. They're low cost, durable, and easy to use. The trade-off...

## Pricing

- **Price:** $1.95 (inc GST) — $1.77 AUD, exc GST
- **Quantity discounts:** 10+ $1.72 (exc GST) · 50+ $1.68 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Sep 01 and Sep 07.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA3782:1` (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/ADA3782:1.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

Plastic gear-box motors (also known as 'TT' motors) are an easy and low cost way to get your projects moving. They're low cost, durable, and easy to use. The trade-off for those low cost hobby motors is that they don't have any way of knowing their speed or location. Basically you send voltage in and get rotation out. Really expensive motors have encoders built in, and for these TT motors, Adafruit have now got some simple snap-on encoder wheels.

This **TT Motor Encoder** is solid, but thin, so it won't make your robot bulky. It even comes in Adafruit black!

Are they laser-cut stainless steel? No. Do they have multiple gray-code notches? No. But what they *do* have is black injection-molded plastic that snaps onto the 'opposite' end from your wheel. [With a simple photo interrupter sensor to count the ticks, you'll be able to know the speed of your wheel](https://core-electronics.com.au/t-slot-photo-interrupter.html), although not the rotation *direction*.

Each order comes with two encoders.

**Note:** This encoder is **only for use with 'TT' gearbox DC motors** it's got an oval notch that snaps right in.

## Technical Details

- Diameter: 25.75mm / 1"
- Thickness: 2.55mm / .1"
- Weight: 1g
 
- [Diagram](https://core-electronics.com.au/attachments/localcontent/3782_diagram_73677a45b2c.jpg)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/a/d/ada3782-1.jpg)