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M10-SENSOR

A project log for M10CUBE

M10CUBE (M10 in short) is a modular controller box with cube dimensions 10x10x10cm. Raspberry bus will be used for the first incarnation.

VASILIS VORRIASVASILIS VORRIAS 07/16/2020 at 11:000 Comments

15/07/2020

On m10-sensor developing...

Realized that some sensors must be on separate boards some time a distance apart. For instance:

- Temperature, Humidity, Barometric must be in a light protective case (being in shadow)

- Ambient Light, UV must be in direct light position.

- Fine Dust, Particle sensor must have its own ventilated case

- Acceleration sensor

- Motion sensor

- And so on...

The idea is to design ONLY ONE PCB sensor.  Then this board according to the populated components will have different sensor capabilities.

For this to be achieved some kind of bus communication must be established. RS485 was chosen at the moment because it is cheap, ready available and easy to design. Boards can me daisy chained.

Main components except the various sensors must have:

- ESP8266

- SD card

- Buzzer

- RS485 communication

At the moment a sensor board following the above specs is under development (see image below)

As an option to be investigated is to have footprints for:

- LoRa 

- GPS

For those may be an STM32 footprint to be a necessity but not before the embedded Wemos D1 has not the ability to handle all the above functions. It is only a matter of # of pin-outs needed.

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