Macchina M2

The Hi-tech Toolbox Upgrade For Car Nerds

Macchina

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Description

As we set out to create the best open-source automotive interface we could make, we had several goals in mind. We wanted to build something that was as universal-as-possible, small, easy-to-use, versatile and low cost. The challenge was to jam as many automotive protocol interfaces into a small space, but still retain a low cost to appeal to the largest audience. At the same time, we leveraged and will continue to contribute to the huge open source community.

Details

Wireless Socket	BLE, WIFI, GSM, 3G, LTE, ... We use the XBEE "form-factor" here.
Processor	The same Atmel SAM3X8E processor used on Arduino DUE - a 32-bit ARM Cortex M3 architecture running at 84MHz.
MicroSD Card Socket	HSMCI (or SPI) interface for all your high speed data logging needs. RTOS anyone?
Micro USB	USB 2.0 also allows M2 to act as both a USB Device and Host.
LEDs	5 one-color and 1 RGB programmable indicators. Great for debugging.
Memory	32k EEPROM for non-volatile memory via I2C, 512 KB for the user applications, 96 KB SRAM.
GPIO Pins	6 Automotive level IO Pins to Control 12V devices (Examples: relays, fans, lights, etc) OR act as analog input (like temp sensor).
Power Supplies	5V@ 3 amps, 3.3V@ 1 amp for connecting add-ons with worrying about power issues.
Automotive interface Circuits	2 channels of CAN, 2 channels of LIN/ K-line, J1850 VPW/PWM, Single-wire CAN interfaces for maximum car compatibility.

Project Logs

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"OK Google, start my car!"
Don Stratton • 01/13/2020 at 22:03 • 0 comments

Macchina is excited to show off one of our most-requested videos, a technology demo we call "OK Google, start my car!", which is a clever project that allows you to use Google Assistant and various IoT services to remotely start and stop a car using our M2 automotive interface with our SuperB wireless expansion module. The full project write-up, complete with all the links to the sample code, libraries, and triumphant demo video is on the Macchina web site at https://docs.macchina.cc/projects/ok_google_start_my_car