---
title: "Check out a SDR based on the Teensy"
description: "Found rheslip's Open Emitter blog post on his Teensy based SDR Project."
canonical: "https://www.baldengineer.com/check-sdr-based-teensy.html"
author: "James Lewis"
date: "2015-03-02T15:18:50Z"
lastmod: "2015-02-25T03:01:59Z"
categories: ["around-the-web","sdr"]
tags: []
---

# Check out a SDR based on the Teensy


[![Teensy SDR Panel from Open Emitter](/wp-content/uploads/2015/02/Teensy%5Fpanel-300x120.jpg)](/wp-content/uploads/2015/02/Teensy%5Fpanel-300x120.jpg)

Teensy SDR Panel from Open Emitter
Several months ago I used [my first software defined radio (SDR)](/software-defined-radios-are-awesome.html "Software Defined Radios are Awesome"). This was a USB Dongle that did the digitizing and used Gqrx and GNU Radio for the actual decoding. Playing with an SDR is really fun. At the time I thought about using my Pi as the decoder, but found some performance issues. Imagine my surprise when I saw [this project](http://rheslip.blogspot.com/2015/01/teesy-sdr-project-update.html).

On rheslip's [Open Emitter blog](http://rheslip.blogspot.com), he has a project which turns a Teensy into a SDR. His latest update includes an enclosure for the project, making it a nice all-in one package.

At only 87mA it is _slightly_ more power efficient than my PC-based or Pi-based setup.

## What is a Teensy?

If you aren't familiar with the Teensy, they are Arduino-compatible boards from [PJRC](http://www.pjrc.com). The Teensy 3.1, which is what this SDR project uses, is an ARM M4 with 256k of FLASH, 64k of RAM, and a 96MHz clock. Oh and it only costs $20.

You can find out more about the [Teeny 3.1 here](http://www.pjrc.com/store/teensy31.html).

## Teensy SDR Video Demo

[YouTube video P2PtTuUChuo](https://www.youtube.com/watch?v=P2PtTuUChuo)