---
product_id: 157950669
title: "Teensy 4.0 (Without Pins)"
brand: "pjrc"
price: "£61.08"
currency: GBP
in_stock: false
reviews_count: 7
url: https://www.desertcart.co.uk/products/157950669-teensy-4-0-without-pins
store_origin: GB
region: United Kingdom
---

# 600MHz ARM Cortex-M7 powerhouse 1MB ultra-fast tightly coupled RAM Dual 480 MBit/s USB ports Teensy 4.0 (Without Pins)

**Brand:** pjrc
**Price:** £61.08
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Power your next-gen projects with the Teensy 4.0 — where speed meets versatility!

## Quick Answers

- **What is this?** Teensy 4.0 (Without Pins) by pjrc
- **How much does it cost?** £61.08 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/157950669-teensy-4-0-without-pins)

## Best For

- pjrc enthusiasts

## Why This Product

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

## Key Features

- • **Compact Yet Mighty:** All this power packed into a tiny 1.4 x 0.7 inch form factor — perfect for sleek, space-conscious designs.
- • **Massive Onboard Memory:** 1MB tightly coupled RAM plus 2MB flash storage ensures lightning-quick data access and ample space for your projects.
- • **Blazing Fast Processing:** Experience the cutting-edge 600MHz ARM Cortex-M7 CPU that crushes complex tasks effortlessly.
- • **Seamless USB Connectivity:** Dual USB ports running at 480 MBit/s enable robust, high-speed device interfacing without hassle.
- • **Versatile Communication Interfaces:** 3 CAN Bus channels (including CAN FD) and 2 I2S audio interfaces open doors to advanced embedded applications.

## Overview

The Teensy 4.0 is a compact, high-performance microcontroller board featuring a 600MHz ARM Cortex-M7 processor, 1MB tightly coupled RAM, and 2MB flash memory. It offers dual 480 MBit/s USB ports, 3 CAN Bus interfaces (including CAN FD), and 2 I2S digital audio channels, making it ideal for advanced embedded and USB device projects. Its small footprint and powerful specs make it a favorite among professional developers seeking reliable, high-speed performance in a minimalist package.

## Description

The Teensy 4.0 is the latest Teensy, offering the fastest microcontroller and powerful peripherals in the Teensy 1.4 by 0.7 inch form factor. It features an ARM Cortex-M7 processor at 600MHz, with an NXP iMXRT1062 chip, the fastest microcontroller available today.

Review: excellent - This is very nice and fast little board. Just remember it is not 5v tolerant on any pins. I love the s/w support for the teensy product line.
Review: Impressive - In the past I've played with several variants of the Arduino family (Uno, Mega,nano editions etc). As a professional programmer I quickly found the Arduino IDE crippling, and so the Blue Pill (STM32F1/ARM based) became my go-to controller when used with an ST-Link v2 and the VisualGDB plugin for Visual Studio. The only thing I ever had trouble with was getting USB to work: there's a mistake on the Blue Pill PCB that gets you off to a bad start, and the sample libs from ST are not reliable, or at least are not well documented. I had heard about the Teensy but thought it was another Arduino variant, so didn't pay any attention. But then when watching some Flight Simulator 2020 videos I was struck by how often the Teensy came up as an easy way to get into DIY USB based joysticks and other Human Interface Devices. A couple of days later my first TeensyDuino sketch was working in the Arduino IDE, and then a day after that I had ditched the Arduino IDE and got it building and working with VisualGDB/VisualStudio again. The thing that seems to make the difference to create a reliable USB platform is that much of the work is apparantly being done by a tiny co-processor. This is also true of some models of Arduino, but the difference is that those Arduinos only see a UART, they can't actually use the USB interface itself. Lots of possibilities open up for the future, e.g. any project I can make that can be implemented using the USB functions of a mouse, keyboard, joystick or mass storage (which is pretty much everything!) - can all be done easily and doesn't even require special PC drivers on Windows 10, which has them built in. You can call me delighted... except for one teensy fly in the ointment (forcing me to deduct a star), being that there's no debug port! The Blue Pill costs way less but even _that_ has a dedicated debug header with a choice of SWD or JTAG debugging (with VisualGDB, Eclipse etc). With the Teensy I'm constantly aware that I'll be in trouble if it ever doesn't "just work". Online you'll find fanboys (obviously Arduino hobbyists, not professionals) who'll tell you that an LED and a printf is all you need for debugging: those guys have clearly never tried to debug a board that keeps bricking itself. LED and printf are indeed useful tools when the firmware is already almost working, but not when (say) some bug has disabled the PIOs, or changed the CPU clock, or got the firmware locked in the death grip of an endless NMI error interrupt loop. I'm aware of various projects in existence that try to get around the lack of a Teensy debug interface. In my brief research I didn't reckon any were quite there yet, but I'm keeping an eye on them. With that caveat I'm delighted to recommend the Teensy for your USB device projects. I almost forgot to mention the performance! The Teensy 4.x features an ARM Cortex M4 core running at 600MHZ (!), plus 1MB internal SRAM (!), and a flash that's way bigger than I'll ever need (~2MB). That certainly beats the pants off a Blue Pill, which itself utterly destroys the Arduino Uno. I also had a successful play with the TeensyLC (3.1) which has performance closer to Blue Pill, but still has that reliable USB coprocessor. One final note: this board is available "with pins" and "without pins". The "with pins" gives you about 60p worth of pin header soldered on for about £5. I prefer to save the £5 and do it myself! Perhaps there was some other benefit of "with pins" that I didn't recognize.

## Features

- 1024K RAM (512K of Tightly Coupled Memory)
- 2048K Flash (64K Reserved for Recovery & EEPROM Emulation)
- 2 USB Ports (Both 480 MBit/Sec)
- 3 CAN Bus (1 with CAN FD), 2 I2S Digital Audio

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07W5J3WNH |
| Are Batteries Included | No |
| Best Sellers Rank | 115,938 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 431 in Barebone PCs |
| Brand | PJRC |
| Computer Memory Type | EEPROM |
| Customer Reviews | 4.8 4.8 out of 5 stars (60) |
| Date First Available | 2 July 2019 |
| Graphics Card Description | Integrated |
| Graphics Card Interface | Integrated |
| Graphics RAM Type | 72-Pin EDO SIMM Memory |
| Guaranteed software updates until | unknown |
| Hard Disk Description | HDD |
| Hard Disk Rotational Speed | 1 RPM |
| Hard Drive Interface | ATA-4 |
| Hard Drive Size | 1 MB |
| Item Weight | 10 g |
| Item model number | Teensy 4.0 |
| Manufacturer | PJRC |
| Maximum Memory Supported | 1 MB |
| Memory Technology | DDR |
| Operating System | DOS |
| Optical Drive Type | BD-R |
| Processor Brand | ARM |
| Processor Count | 4 |
| Processor Speed | 600 MHz |
| Processor Type | Cortex |
| Product Dimensions | 3.81 x 1.27 x 1.27 cm; 10 g |
| RAM Size | 1 MB |
| Series | Teensy 4.0 |
| Wireless Type | 802.11b |

## Product Details

- **Brand:** PJRC
- **CPU model:** Cortex
- **Memory storage capacity:** 2048 KB
- **Model name:** Teensy 4.0
- **RAM memory installed size:** 1 MB

## Images

![Teensy 4.0 (Without Pins) - Image 1](https://m.media-amazon.com/images/I/41wDmSH9D3L.jpg)
![Teensy 4.0 (Without Pins) - Image 2](https://m.media-amazon.com/images/I/51g2QpUvSiL.jpg)
![Teensy 4.0 (Without Pins) - Image 3](https://m.media-amazon.com/images/I/61ZL+5+SGDL.jpg)
![Teensy 4.0 (Without Pins) - Image 4](https://m.media-amazon.com/images/I/61hZ8EtZNJL.jpg)
![Teensy 4.0 (Without Pins) - Image 5](https://m.media-amazon.com/images/I/71TjWdoZhoL.jpg)

## Questions & Answers

**Q: Is the connector type Usb-C ?**
A: Hello, as others have already mentioned it is Micro USB.

## Customer Reviews

### ⭐⭐⭐⭐⭐ excellent
*by W***N on 10 March 2022*

This is very nice and fast little board. Just remember it is not 5v tolerant on any pins. I love the s/w support for the teensy product line.

### ⭐⭐⭐⭐ Impressive
*by D***E on 1 January 2021*

In the past I've played with several variants of the Arduino family (Uno, Mega,nano editions etc). As a professional programmer I quickly found the Arduino IDE crippling, and so the Blue Pill (STM32F1/ARM based) became my go-to controller when used with an ST-Link v2 and the VisualGDB plugin for Visual Studio. The only thing I ever had trouble with was getting USB to work: there's a mistake on the Blue Pill PCB that gets you off to a bad start, and the sample libs from ST are not reliable, or at least are not well documented. I had heard about the Teensy but thought it was another Arduino variant, so didn't pay any attention. But then when watching some Flight Simulator 2020 videos I was struck by how often the Teensy came up as an easy way to get into DIY USB based joysticks and other Human Interface Devices. A couple of days later my first TeensyDuino sketch was working in the Arduino IDE, and then a day after that I had ditched the Arduino IDE and got it building and working with VisualGDB/VisualStudio again. The thing that seems to make the difference to create a reliable USB platform is that much of the work is apparantly being done by a tiny co-processor. This is also true of some models of Arduino, but the difference is that those Arduinos only see a UART, they can't actually use the USB interface itself. Lots of possibilities open up for the future, e.g. any project I can make that can be implemented using the USB functions of a mouse, keyboard, joystick or mass storage (which is pretty much everything!) - can all be done easily and doesn't even require special PC drivers on Windows 10, which has them built in. You can call me delighted... except for one teensy fly in the ointment (forcing me to deduct a star), being that there's no debug port! The Blue Pill costs way less but even _that_ has a dedicated debug header with a choice of SWD or JTAG debugging (with VisualGDB, Eclipse etc). With the Teensy I'm constantly aware that I'll be in trouble if it ever doesn't "just work". Online you'll find fanboys (obviously Arduino hobbyists, not professionals) who'll tell you that an LED and a printf is all you need for debugging: those guys have clearly never tried to debug a board that keeps bricking itself. LED and printf are indeed useful tools when the firmware is already almost working, but not when (say) some bug has disabled the PIOs, or changed the CPU clock, or got the firmware locked in the death grip of an endless NMI error interrupt loop. I'm aware of various projects in existence that try to get around the lack of a Teensy debug interface. In my brief research I didn't reckon any were quite there yet, but I'm keeping an eye on them. With that caveat I'm delighted to recommend the Teensy for your USB device projects. I almost forgot to mention the performance! The Teensy 4.x features an ARM Cortex M4 core running at 600MHZ (!), plus 1MB internal SRAM (!), and a flash that's way bigger than I'll ever need (~2MB). That certainly beats the pants off a Blue Pill, which itself utterly destroys the Arduino Uno. I also had a successful play with the TeensyLC (3.1) which has performance closer to Blue Pill, but still has that reliable USB coprocessor. One final note: this board is available "with pins" and "without pins". The "with pins" gives you about 60p worth of pin header soldered on for about £5. I prefer to save the £5 and do it myself! Perhaps there was some other benefit of "with pins" that I didn't recognize.

### ⭐⭐⭐⭐⭐ Almost cheaper than buying the micro standalone
*by H***N on 12 September 2021*

This device is almost cheaper than buying the micro standalone. But just the size of the device makes it a wonderful device to dev on for your project and fitting it is easy.

## Frequently Bought Together

- Teensy 4.0 (Without Pins)
- AITRIP 5 Pcs GY-521 MPU-6050 MPU6050 Module,6 DOF MPU-6050 3 Axis Accelerometer Gyroscope Sensor Module 16Bit AD Converter Data Output IIC I2C DIY Kit for Arduino (5PCS)
- Generic Breakaway Right Angle Headers 0.1" 3x40 Pin Gold Plated(pack of 5)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-18*