Colibri is a low-cost automation system, primarily intended for building automation, home automation, energy supervision, agriculture supervision and similar systems. Main features beside costs are;

Flexible I/O system, via Expansion Cards in M.2 Key E sockets.
Power supply of 9-36 Volt, either AC or DC (some expansion cards won't work with DC supply)
Colibri-1 using LoraWAN for communications.
Colibri-2 is a full-fledged Raspberry Pi, built with Compute Module 4 (CM4)

MCU Modules

Initially only the Dragino LoRa ST module is available, but other MCU modules are planned for in the near future, especially with more Flash.

Expansion Modules

The Colibri system is based around the M.2 connector and a non-standard bus for I2C and SPI communications. Each expansion board has a EEPROM memory available to identify which module is present in each expansion slot. Furthermore, there is a Colibri Forth program located in the eeprom that contains the functionality of the module, executed in the MCU module. This allows for future expansion modules without requiring the upgrade of the MCU module.

Form Factor

Colibri expansion boards are 22x42mm and has an edge connector called M.2 Key E. Many of the pins are following the Key E standard, but Colibri boards have additional requirements, which is not available in the official standard.

WARNING!!! Do NOT plug Colibri expansion boards into other equipment. Do NOT plug any M.2 card into a Colibri system, unless that card/board is specifically made for Colibri.

Boards

Name	Type	Description	Status
Colibri-3	Colibri Carrier	Minimal Colibri Host with 2 expansion cards. MCU slot is to be populated with Dragino LoRaSt module.	Prototype available
M2 E Breakout	M2 breakout board	Generic breakout board for M.2 E key boards.	Available for pre-orders
Colibri Dev	I/O Expansion	Development, maker, experimentation and breakout board for the Colibri I/O system. Power rails, 24LCxx dedicated footprint, plus i2c and spi on large pads.	Available for pre-orders
Colibri AIC	I/O Expansion	Two analog 0-20mA inputs	Prototype available
Colibri AIV	I/O Expansion	Two analog 0-10V inputs	Prototype available
Colibri AQV	I/O Expansion	Two analog 0-10V outputs	Prototype available
Colibri DIU	I/O Expansion	Four digital inputs, for state, counter, pulsewidth measurement. On-board STM32F030 for ability to count very fast pulses and high accuracy PWM measurements.	Prototype available
Colibri RS485U	I/O Expansion	Two non-isolated RS-485 ports. On-board STM32F030 implementing Modbus protocol, either as master or slave device.	Prototype available
Colibri TRIAC1	I/O Expansion	Four Triac outputs, driving 24V AC.	Prototype available
Colibri MCU1	Host MCU	Replacement for Dragino LoRa ST as cpu/mcu for the Colibri-3 and similar carrier boards. Contains STM32WL55 with 256kB Flash and 64kB RAM.	Prototype ordered from manufacturer.
Colibri PID1	I/O Expansion	PID regulator, with a PT1000 input and a 0-10V analog output. On-board STM32F030 for host-independent operation.	Prototype ordered from manufacturer.
Colibri Pt1000	I/O Expansion	Two PT1000 temperature sensor inputs.	Prototype ordered from manufacturer.
Colibri SSR	I/O Expansion	Two Solid State Relays, ON/OFF.	Prototype ordered from manufacturer.

Planned Boards

	Name	Type	Description	Status
	Colibri-7pi	Colibri Host	Colibri Host with 7 expansion cards, two Ethernet ports, 4 USB ports and SDcard connector. Powered by Raspberry Pi CM4 module.	Ready for prototype

Resources

Dragino LoRa ST software stack; https://github.com/dragino/LoRa_STM32
Dragino LoRa ST hardware; https://github.com/dragino/Lora/tree/master/LoRaST

Colibri

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