How to Build a Low-Cost WiFi Extender From Used Computer Parts


With more devices connecting to home WiFi networks than ever before, weak WiFi signals in parts of your house can be frustrating. Purchasing an expensive WiFi range extender from your internet provider or electronics store is one solution, but you can actually build your own functional WiFi extender from used computer parts for a fraction of the cost.

In this guide, I'll walk you through the full process of building a DIY WiFi extender using old networking equipment you may already have or can buy cheaply secondhand. With just a little bit of technical know-how, you can boost your home's WiFi coverage for under $20.

What You'll Need

To build your own WiFi extender, you'll need the following used computer parts and supplies:

Many old routers, access points, cables, and power adapters can be found for very cheap or even free by asking friends, checking thrift stores, or browsing classifieds sites.

How to Assemble the Extender

Building your WiFi extender involves three main steps:

1. Configure the Old Router as a Wireless Repeater

The first step is to configure your secondary router or wireless access point to act as a wireless repeater. This allows it to pick up and re-broadcast an existing WiFi signal. Here's how:

2. Find an Optimal Location

It's important to place your DIY extender in a location where it can pick up a strong signal from your primary router, but also sufficiently fill any WiFi dead zones. Some tips:

3. Connect the Extender to Your Main Router (Optional)

For the most reliable extended network, it's best to connect your WiFi extender directly to your main router via Ethernet:

Optimizing Your Extended Network

Here are some additional tips for getting the best performance from your used computer part WiFi extender:


Building your own WiFi range extender doesn't have to be difficult or expensive. With a little DIY spirit, you can leverage used routers, access points, and other old computer networking parts to improve your home's WiFi coverage. Strategically placing your budget WiFi repeater allows you to fill dead zones and get faster speeds in hard-to-reach areas.