> **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

# Line Tracking Sensor for Arduino

**Type:** Product page · **SKU:** SEN0017 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/line-tracking-sensor-for-arduino.html ([markdown](https://core-electronics.com.au/line-tracking-sensor-for-arduino.html.md))

Line tracking is the most basic function of smart mobile robot. As you can see line tracking robot matches everywhere. We designed this new generation of line tracking sensor to be your robot's powerful copilot all the way. It will guide your robot by telling white and black quickly and correctly, via TTL signal.

## Pricing

- **Price:** $7.95 (inc GST) — $7.23 AUD, exc GST
- **Quantity discounts:** 6+ $6.86 (exc GST) · 12+ $6.57 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 27 and Aug 31.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN0017:1` (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/SEN0017:1.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

This is a line tracking (following) sensor to guide your robot by telling white from black quickly and accurately. It is commonly used in [arduino robot](https://www.dfrobot.com/category-37.html) project, and probably is the best line following sensor in the market. Line following is the most basic function of smart mobile robot. As you can see line tracking robot one of the easiest ways for a robot to successfully and accurately navigate. We designed this new generation of line tracking sensor to be your robot's powerful copilot all the way. It will guide your robot by telling white from black quickly and accurately, via TTL signal. With a drawed path and good programming can ensure results that are far more consistent than if the robot was simply told where to go without any reference.

 To improve its sensitivity we have replaced the old opto interrupt with high quality one on our latest version. Now the sensor is more accurate and It's simplified design make it compatible with most mobile platforms. You can combine several line following sensors with other ranged sensors, making mobile robots complete. With a sensor aiming the floor, not only you can detect lines, but often, floor with low reflection and dark color can be used to distinguish different areas. For example, a kitchen with a dark floor and a living room with a light or white floor, given this information to your robot you can keep it enclosed to a specific area or even let the robot know the area to change it's behavior. We've seen it also for stairs detector, when the sensor is triggered by the lack of reflection when high altitude is detected. **Gravity:Digital Line Tracking(Following) Sensor For Arduino Projects video:**

### Features

- Wide voltage range from 3.3V to 5V
- Standard assembling struct (Times-of-5mm Center distance between two 3mm mounting holes)
- Icons to simple illustrate sensor function
- High quality connector
- Immersion gold surface
 
### Specification

- Supply Voltage: 3.3V to 5V
- Detecting Range:
- Interface:Digital
- Operating current: 20mA @ 5V
- Operating temperature range: 0°C ~ + 50°C
- Output: TTL(Black for LOW output, White for HIGH output)
- Size:28x10mm (1.1x 0.4 in)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/s/e/sen0017-1.jpg)