---
product_id: 9004202
title: "Teensy 3.1"
brand: "koolamo"
price: "€ 0.16"
currency: EUR
in_stock: false
reviews_count: 8
url: https://www.desertcart.gr/products/9004202-teensy-3-1
store_origin: GR
region: Greece
---

# 72 MHz CPU Speed 32-bit ARM Cortex-M4 256K Flash Memory Teensy 3.1

**Brand:** koolamo
**Price:** € 0.16
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Elevate Your Projects with Teensy 3.1!

## Quick Answers

- **What is this?** Teensy 3.1 by koolamo
- **How much does it cost?** € 0.16 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/9004202-teensy-3-1)

## Best For

- koolamo enthusiasts

## Why This Product

- Trusted koolamo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Power Meets Precision:** Experience the power of a 72 MHz CPU, designed for seamless performance.
- • **Versatile Connectivity:** 34 digital I/O pins ensure you can connect and control a multitude of devices.
- • **Compact and Lightweight:** At just 0.01 ounces, this tiny powerhouse fits anywhere your imagination takes you.
- • **Unleash Your Creativity:** With 21 high-resolution analog inputs, the Teensy 3.1 is your canvas for innovation.
- • **PWM Outputs for Dynamic Control:** 12 PWM outputs allow for precise control over your projects.

## Overview

The Teensy 3.1 is a compact yet powerful microcontroller featuring a 32-bit ARM Cortex-M4 CPU running at 72 MHz, equipped with 256K Flash Memory and 64K RAM. It offers 21 high-resolution analog inputs and 34 digital I/O pins, making it an ideal choice for innovative projects and prototyping.

## Description

Description: The Teensy is a breadboard-friendly development board with loads of features in a, well, teensy package. The Teensy 3.1 brings a 32 bit ARM Cortex microprocessor into the mix so you can do some serious number crunching.The Teensy 3.1 comes pre-flashed with a bootloader so you can program it using the on-board USB connection: No external programmer needed! You can program for the Teensy in your favorite program editor using C or you can install the Teensyduino add-on for the Arduino IDE and write Arduino sketches for Teensy!The processor on the Teensy also has access to the USB and can emulate any kind of USB device you need it to be, making it great for USB-MIDI and other HID projects. The 32 bit processor brings a few other features to the table as well, such as multiple channels of Direct Memory Access, several high-resolution ADCs and even an I2S digital audio interface! There are also 4 separate interval timers plus a delay timer! Oh yeah, and all pins have interrupt capability. Also, it can provide system voltage of 3.3V to other devices at up to 100mA.All of this functionality is jammed into a 1.4 x 0.7 inch board with all headers on a 0.1" grid so you can slap in on a breadboard and get to work! On top of everything else the Teensy has been gifted with more RAM (64K, thats 4x more than the Teensy 3.0) and 256kb of flash memory! The Teensy 3.1 now now has 5V tolerance on its digital inputs however all analog-only pins are still 3.3V only. Features:7 Timers for intervals/delays, separate from PWMUSB with dedicated DMA memory transfers3 UARTs (serial ports)SPI, I2C, I2S,CAN Bus, IR modulatorI2S (for high quality audio interface)Real Time Clock (with user-added 32.768 crystal and battery)4 general purpose DMA channels (separate from USB)Touch Sensor Inputs

## Features

- 32 bit ARM Cortex-M4 72 MHz CPU (M4 = DSP extensions)
- 256K Flash Memory, 64K RAM, 2K EEPROM
- 21 High Resolution Analog Inputs (13 bits usable, 16 bit hardware)
- 34 Digital I/O Pins (5V tolerance on Digital Inputs)
- 12 PWM outputs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | KoolaMo |
| Part Number | TEENSY31 |
| Item Weight | 0.01 ounces |
| Package Dimensions | 2.5 x 1 x 0.2 inches |
| Is Discontinued By Manufacturer | No |
| Color | 5 |
| Pattern | KN200 |
| Item Package Quantity | 1 |
| Certification | ma |
| Usage | personal |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![Teensy 3.1 - Image 1](https://m.media-amazon.com/images/W/MEDIAX_792452-T1/images/I/51vjsiJurIL.jpg)
![Teensy 3.1 - Image 2](https://m.media-amazon.com/images/W/MEDIAX_792452-T1/images/I/51VSnakZ19L.jpg)
![Teensy 3.1 - Image 3](https://m.media-amazon.com/images/W/MEDIAX_792452-T1/images/I/518+KUdBXPL.jpg)
![Teensy 3.1 - Image 4](https://m.media-amazon.com/images/W/MEDIAX_792452-T1/images/I/51Vwx6rlLwL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Perfect for beginner & pro
  

*by Y***9 on Reviewed in the United States on May 14, 2015*

If you are just starting out this is the board for you. If you're more experienced, this is still the board for you.Pro:- It's compatible with almost everything arduino with a little fiddling from time to time (if you're not interested in fiddling then why are you getting this?). This means there are HUGE amounts of resources available to learn both the hardware and software side. You don't need a special programmer, you don't need to hold any buttons, just plug it in and push your code to it with a standard USB cable. That's it, and that's HUGE since you can work on getting that LED blinking with FAR less working on getting it connected right first. All of this is is also of course beneficial to people who know what they're doing since it translates directly into time savings.- It's super powerful for the price. An arduino is is give or take the same cost and not nearly as capable. Doesn't matter when you just want something to blink, but makes a BIG difference when you need to load up a ton of code and use all the pins. It's cheap enough to use for little projects and powerful enough to use for big ones. And of course it's VERY small, without being cramped (for it's size of course).- Add pins and it will slot into a bread board perfectly, or add headers to turn it into it's own breadboard starter. Or solder it directly to a circuit or wires to minimize size for a final project.- Comes with a nice large print card labeling all the pins on front and back. This is invaluable and SUPER easy to reference. The time savings from having it all spelled out for you (especially when you don't know what you even are looking for) is huge. It's a simple thing but it goes a long way.- Lots of fancy stuff. It has tons of IO most of which is multifunction (analog/digital, various bus's, touch sensor, etc.) There's just tons of play with when you're learning, or some stuff you might otherwise need an external controller, or lots of other parts for and it's all baked in, and again, handles just like an Arduino so finding documentation is usually just a quick google search away.- This makes it SUPER easy to emulate keyboard/mouse/joystick/serial devices (even all at once) so using it as the base for a custom controller, or button box, or any other form of computer accessory is CRAZY simple (like plug it in, ~4 lines of code and you're done simple...)Cons:- This one doesn't come with pins. If you're new to soldering look up a tutorial, it's not *that* hard to add them, but if you've got ham hands (we all do from time to time) it can be frustrating if you just want to jam it into a breadboard to simplify trying "stuff". There is a version with pins available from the manufacturer (along with lower powered versions based on the same design for less if you really want something cheap/limited... the product line has really be thought through...)- It's probably overkill for a LOT of stuff (again check with PJRC, there are cheaper models...) but when a lower powered alternative is comparable in price that's not much of a con...- Because of it's form factor it's not compatible with Arduino shields directly, and because of it's pin out it's not directly compatible with Arduino tutorials (you might need to connect up to different pins). But both of these are easily remedied with an adapter (purchased directly or hand built for pennies) and a little extra reading. I personally always change pin numbers/variables whenever I can just to prove that I actually know what they are doing and not just copy/pasting the example and claiming I understand. How big a problem this is is entirely up to you (I don't care at all, for some this might be a deal breaker since you can't just get a shield in the same order, plug them together, load some code and be done...)I was putting off learning more about electronics and micro-controllers for years, and now my biggest problem is every new thing I learn just makes it so easy I can't finalize a project idea because I keep finding easy things to grow it. I should make a controller for these lights so I can learn about transistors... ok that was easy, maybe I can make them dim able... done. This thing talks to the computer I wonder if I can learn about serial comms. Oops I went to far now I have a web interface that controls my dimmable LED lights from my smart phone... wait what about that touch sensor... and on and on. The warning that goes along with that is you will need more parts so expect to put in a lot of little orders soon.

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Four Stars
  

*by D***W on Reviewed in the United States on May 26, 2015*

Works great!

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Good things come in small packages
  

*by A***R on Reviewed in the United States on August 22, 2015*

This is a very small device yet powerful. Good things come in small packages(Out of topic, but just to illustrate this, I dont buy the biggest banana at the supermarket of the biggest orange, etc).  This is the case with Teensy 3.1 . 64K of SRAM :) to load your programs, compare to the Arduino Mega 2560 has only 8K, Nano has ONLY 2K (: , etc.To prototype with Teensy a breadboard is highly recommended, dont forget to order the pins and warm up your solder iron, plus sharp your soldering skills.  Its a little pick in the Windows environment. but there is a very active forum ready to help you.  No  pins installed.

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---

*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-02-20*