> **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

# Analog Feedback Servo

**Type:** Product page · **SKU:** ADA1404 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/analog-feedback-servo.html ([markdown](https://core-electronics.com.au/analog-feedback-servo.html.md))

It looks like a servo, it acts like a servo, but it's more than just a servo! Adafruit got a factory to custom-make these classic 'standard' sized hobby servos with a...

## Pricing

- **Price:** $29.90 (inc GST) — $27.18 AUD, exc GST
- **Quantity discounts:** 10+ $26.36 (exc GST) · 50+ $25.82 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 21 and Aug 25.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA1404:1` (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/ADA1404:1.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

It looks like a servo, it acts like a servo, but it's more than just a servo! Adafruit got a factory to custom-make these classic 'standard' sized hobby servos with a twist - the feedback (potentiometer wiper) line is brought out to a fourth white wire. You can read this wire with an analog input such as those on an Arduino, to get the servo's position. That information can be used in robotics to improve stability or even allow 'recording' of servo motion.

Note that the default servo pulse widths (usually 1ms to 2ms) may not give you a full 180 degrees of motion. In that case, check if you can set your servo controller to custom pulse lengths and try 0.75ms to 2.25ms. You can try shorter/longer pulses but be aware that if you go too far you could break your servo!

[Check out Adafruit's example Arduino sketch which demonstrates how to record motion data to the EEPROM and then play it back when a button is pressed.](https://github.com/adafruit/Feedback-Servo-Record-and-Play) Comes with a range of horns as seen above.

Analog Feedback Servo ([2:55](https://www.youtube.com/watch?feature=player_detailpage&v=uWYMIBEN8-0#t=175))

## Technical Details 

- Dimensions: 39.55mm / 1.5" x 39.55mm / 1.5" x 19.5mm / 0.7"
- Max Dimensions: 55.36mm / 2.1" x 43.34mm / 1.7" x 19.5mm / 0.7"
- Wire length (at least): 13cm / 5.1" long
- Torque: 90.26 oz\*in / 6.5 kg\*cm
- Speed: 0.21 sec/60°
- Weight: 46 grams
- Dual ball bearing
- Plastic gearbox
- Spline Count: 23

![RoHS 2 2011 65 EU Compliant](https://core-electronics.com.au/attachments/localcontent/RoHS2_2011_65_EU_7356c5574c.svg)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/1/4/1404-04.jpg)