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The AutoPi Telematics Unit SocketCAN

Faster data rate at your fingertips. The new TMU SocketCAN is the future of telematics units. It allows users for more possibilities and comes with plenty of benefits. SocketCAN device SocketCAN device

New and improved AutoPi TMU SocketCAN

We are presenting you the most powerful Telematics Device on the market. 2x SocketCAN interface and easily accessible outputs provide you with endless possibilities. Designed and assembled in Denmark.

Key Features

See the main key features of our SocketCAN device:
Upgraded automotive interface

The device comes with a 2x CAN interface and can be further expanded with additional CAN interfaces. Support for Diagnostics over IP (DoIP) using Raspberry Key Benefits Pi 3B+ and up

AutoPi Core is based on a full LINUX OS (Raspberry Pi OS), with endless possibilities for extensions and integrations. Well-proven and tested OS, with high endurance.
Open source-software

The device runs on an open source-software, which allows users to build a custom code on top of that. All drivers and implementations in AutoPi Core is available from our GitHub repository.
Computing Power

Quad Core CPU provides incredible speed and functionality. Broadcom BCM2837B0 64-bit Quad-core CPU at 1.4GHz. 512MB RAM and also an integrated GPU. Upgradeable to even more speed with Raspberry Pi 4.

What is the Telematics Unit?

Telematics unit or also known as Telematics Control Unit (TCU) refers to the embedded system, which is on board of the vehicle and connects to the vehicle and the cloud.

Typically, the telematics unit can be connected via OBD2 port in the vehicle and the data can be seen on the laptop, smartphone, dashboard or special obd2 scanner.

The telematics unit collects telemetry data from the vehicle, such as speed, position, connectivity, engine data and more. The TCU is very beneficial for any use of vehicle, regardless the purpose of the vehicle.

However, it can bring lots of cool features and improve driving experience of a driver or the whole family. Some of the most favorite features are heads up display, theft detection, car WIFI hotspot and voice commands recognition.

Telematics unit is commonly used in businesses, more specifically in fleet management, as it improves the efficiency of the fleet (group of vehicles that engage in one common activity) and therefore, the logistics of the actual business.

Telematics Unit uses satellite navigation (GPS), as well as electronic mapping tool to monitor the position of the vehicle at all times. It is possible to monitor it even if the vehicle has been stolen.

Benefits of Telematics Unit

Telematics Unit can bring you lots of benefits. There are many more additional aspects that we do not even realize telematics unit is capable of.

One of the automotive industry trends is the connectivity and AutoPi Telematics Unit can actually connect your vehicle to the cloud and bring you additional features that you did not even know exist.

Connectivity - Capable of connecting your vehicle to cloud, collect data and 'communicate' with your vehicle. It is possible to connect several vehicles to monitor them at the same time.

Antenna optimization - It is possible to adjust antenna power optimization with better sensing, diagnostics and low noise.

Reliability - Telematics Unit is reliable, efficient and offers fast data transmission that enables communication to other systems in the vehicle.

Driving assistance - AutoPi Telematics Unit can improve your driving experience. Check out our use cases page, where you can find lots of examples on how TMU can help you.

Despite the large number of benefits that Telematics unit brings, people still think the price is too high and is not worth it. If you are barely using your vehicle, and you do not really pay much attention to the health of your vehicle, then it might be true.

On the other side, if you are using your vehicle regularly, or it is part of your daily job, then it is definitely worth it. Think about how much you spend at a mechanic a year and what are your vehicle's features or functionalities. Then consider everything that Telematics unit brings you.

It improves your vehicles' 'health', notify you of its current situation, improves your driving experience, gives you lots of additional possibilities and on top of that, it can even help your whole family while using the vehicle. There are seriously only benefits for having a Telematics Unit in your vehicles.

Better Display

Due to its Broadcom BCM2837B0 64-bit Quad-core CPU, 512MB RAM and integrated GPU, AutoPi Telematics Unit supports recording and displaying HD resolution videos. Use it for image recognition and machine vision in advanced projects.

Filling the gap

Earlier generations use accelerometers to detect the orientation of the unit. As a new feature, AutoPi SocketCAN Pi3 uses an IMU, with both accelerometers and gyroscope to fill in its lateral orientation during a movement.

This gives that additional information by tracking the rotation and twist of the device. This gives a both clear and responsive data output on the device’s physical orientation.

Accessing connectivity where others can’t

AutoPi TMU Pi3 is designed to be easily upgradable to a Pi 3 Model B+ or Pi 4 and enable high speed data transmission and bandwidth via Ethernet connection.

One of the main advantages of Ethernet is that it is typically less vulnerable to disruption, therefore, offers a high-performance network and greater degree of network security. In newer cars, Ethernet runs alongside traditional vehicle cabling used for in-car connectivity, allowing all vehicle components to be securely connected.

Features of the new SocketCAN Telematics unit

4G/LTE with global coverage

The integrated modem support global 4G/LTE bands, which gives the device worldwide coverage in a single device.

Built in 2x CAN interface

Increased automotive bandwith and speed with dual SocketCAN built into the device. Improve network bandwidth with up to 8 time more than classic CAN.

Factory integrated unit or aftermarket add-on

Use the AutoPi TMU SocketCAN as a factory integrated OEM device or as an aftermarket add-on installation.

Integrated power-safe functionality

Proven and experienced power fail-safe functionality integrated. Ensures power life time cycle of your device and vehicle battery.

Runs full Linux OS

Built on top of Raspberry Pi OS, the device boost a well proved and thoroughly tested OS, with guarantee for stability.

Can be extended to almost any usage

Allows extension to a lot of use cases, both business and individuals. Add external sensors to further boost the capabilities.

Upgradeable CPU/RAM

Upgrade the device to Raspberry Pi 3B+ or Raspberry Pi 4 and get up to 8GB of memory.

Automotive certified (CE/FCC)

Certified to automotive standards for global usage.

Developer friendly

As a developer, you can access all data and functionalities through an extensive API and integrate them into your own application. If you need more control; install your own software and run it directly on the telematics unit. It is your device, so you decide.
Endless posibilities

The perfect foundation for your intelligent-car/Internet-of-Things project; a powerful computing unit running a high-level operating system, several connectivity options, and an open platform. The possibilities are endless.
Open Platform

We believe in openness and freedom of use. The hardware and software platform may be used by anyone for whatever they like. As a user, you can share and benefit from the community of contributors and even collaborate on the development of existing and new features in the dashboard.
For easier access to all features

Improved and upgraded expansion options SocketCAN Standard configuration
Standard configuration

Suited for all Raspberry Pi editions SocketCAN one external antenna and USB access configuration
1x external antenna | 2x USB-A

Suited for Raspberry Pi 3B+ and up SocketCAN two external antennas configuration
2x external antenna

Suited for Raspberry Pi 3B+ and up SocketCAN access to USB and Ethernet configuration
1x ethernet | 2x USB-A

Suited for Raspberry Pi 3B+ and up SocketCAN three external antennas configuration
3x external antenna

Suited for Raspberry Pi 3A+

Merged into a compact Telematics Unit

Leading edge hardware components

Raspberry Pi™

An embedded Raspberry Pi delivers the computing power which enables the AutoPi Telematics Unit to do practically anything. It easily runs a full Linux operating system alongside with demanding applications.

4G/3G Modem

The built-in modem enables Internet access through a 4G/3G connection, depending on your model. Our future-proof design allows easy replacement of the network module with other expansion boards supporting standard Mini PCI-Express socket.

GPS Module

Real-time tracking of vehicle position, speed, and altitude. Includes A-GPS support that significantly improves the startup performance and time-to-first-fix.

OBD Chipset

Advanced on-board OBD-II chip that supports communication with all OBD-II compliant vehicles.


Embedded 3-axis accelerometer enables real-time measurement of all horizontal and vertical G-forces applied to the car.

Voice Speaker

Playback of voice notifications based on real-time data from GPS, accelerometer, car diagnostics or any other device attached.

USB Ports

Connect USB peripherals to the external USB ports. For example, WiFi and Bluetooth devices or even an HD camera which can be used as a dashcam.
*external USB ports available on Raspberry Pi 3B+ and up


Plug in a touchscreen or any other display device through the supplied HDMI port. An essential feature when building an in-car computer or entertainment system.


Integrate with and control auxiliary systems in your car. For instance a third party electronic boost controller or a water/methanol injection system. An useful option for advanced IoT projects.


The AutoPi is extensible through Bluetooth 4.2 with Bluetooth Low Energy (BLE). Connect a range of third-party products through this.


Additional connection options are available through built-in 2.4GHz and 5GHz IEEE 802.11.b/g/n/ac wireless LAN.

Native Real-time Clock

For those needing precise timing and accuracy, we have added a native Real-time clock on the device. This means that even when offline, the device will always maintain correct timing.

Certified for automotive use

Start your new project with a solution that has been proven, verified and certified for automotive use - CE Certified

CE Certifications

Our device is CE certified under the following standards:

EN 301 489-1 v2.2.0
EN 50498 and Directive 2004/104/EC
ISO 7637-2:2011
EN 301 489-3 V2.1.1

FCC Certifications

Our device is FCC certified under the following standards:

FCC 47 CFR Part 15, Class A:10–1–17 Edition - FCC Certified
Upgradable to match your requirements

Upgrade the AutoPi Telematics unit to get more processing power and memory

Raspberry Pi 3A+ (Standard)

Processor: Broadcom BCM2837B0, Cortex-A53 (ARMv8), 64-bit quad-core SoC @ 1.4GHz
Memory: 512MB LPDDR2 SDRAM - Standard RPi3 A+

Raspberry Pi 3B+

Processor: Broadcom BCM2837B0, Cortex-A53 (ARMv8), 64-bit quad-core SoC @ 1.4GHz
Memory: 1GB LPDDR2 SDRAM - RPi3 B+

Raspberry Pi 4

Processor: Broadcom BCM2711, Cortex-A72 (ARMv8), 64-bit quad-core SoC @ 1.5GHz
Memory: 2GB, 4GB or 8GB LPDDR4-3200 SDRAM (depending on model) - RPi4

AutoPi TMU SocketCAN Technical Specifications


Broadcom BCM2837B0, Cortex-A53 (ARMv8), 64-bit quad-core SoC @ 1.4GHz (built-in Raspberry Pi 3 model A+)

Upgrade (RPi3 B+): Broadcom BCM2837B0 quad-core A53 (ARMv8) 64-bit @ 1.4GHz

Upgrade (RPi4): Broadcom BCM2711, Quad core Cortex-A72 (ARM v8) 64-bit SoC @ 1.5GHz



Upgrade (RPi3 B+): 1GB LPDDR2 SDRAM

Upgrade (RPi4): 2GB, 4GB or 8GB LPDDR4-3200 SDRAM (depending on model)


32GB Micro SD Card High Endurance Class 10 UHS-1 (Raspbian Jessie OS and AutoPi Core software installed) (Upgradeable to 128GB)

Size, Weight and Casing

Depth: 137mm/4.7" Height: 36mm/1.4" Width: 66mm/2.6"

Casing: Improved expansion options with exchangeable back shield for external antennas, additional USB ports, ethernet port. - Casing measurements - Casing measurements

Integrated 4G/LTE Cat 4 connection (3G/EDGE fallback)

150Mbit DL / 50Mbit UL

Worldwide support in a single device

4G LTE Bands (Global): B1 / B2 / B3 / B4 / B5 / B7 / B8 / B12 / B13 / B18 / B19 / B20 / B25 / B26 / B28 / B38 / B39 / B40 / B41

3G Fallback (WCDMA): B1 / B2 / B4 / B5 / B6 / B8 / B19

EDGE Fallback: B2 / B3 / B5 / B8 / Quad-band

Security Element

- Hardware Based Secure Key Management

- Public Key Algorithms: ECDSA: FIPS186-3, NIST Standard P256, B283 and K283

- Secure Storage of Keys, Certificates and Data

- Unique Serial Number

- Intrusion Detection


Integrated GPS + A-GPS

Supports: GPS/GLONASS/BeiDou/Galileo/QZSS


Line Voltage: 12.5V AC (Car battery power). Up to 35V (Trucks). Support for trucks with up to 35V

Built-in Power Management system to prevent the vehicle’s battery from being drained


2 x USB: Available when using Raspberry Pi 3B+ and up



Built on Cypress CYW43455 Chipset

WIFI: 2.4GHz and 5GHz IEEE 802.11.b/g/n/ac wireless LAN

Bluetooth: Bluetooth 4.2 + Bluetooth Low Energy (BLE)


3-Axis accelerometer


Built in 3-axis gyroscope

Automotive Interface

2X CAN: CAN interface with up to 1Mbps Data rate with integrated CAN data filter

DoIP: Built in support for DoIP using RPi3 B+ and up

Input Slots

SD Card: Included(See storage)

SIM Card: Nano SIM - (SIM subscription not included)


Built-in speakers

Mini Jack Out (audio)

Video Out

HDMI @ 1080p60 Video Output

Absolute Maximum Operating Environment

Operating Temperature: -20° TO 70° C (-4° TO 158° F)

Relative Humidity: 0% TO 75% Noncondensing

Operating System

Raspbian OS with preconfigured AutoPi Core software


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