Archives de catégorie : Domotic

Domotic, Gadgets

Monitor your Raspberry enclosure

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A small gadget to monitor the power supply and enclosure temperature of your Raspberry.

My Raspberry Pi server host a OpenVPN service, Onion Pi Tor proxy access point, and EasyIOT.

The power supply come from a old Pc, and the enclosure from a plexi-glass slab.

It’s based on Arduino, so there is no schematic, sketch is available here, it’s just a Atmega328P with a DS1820 temperature sensor,
analoginput A0 is used to monitor Vcc power supply through a voltage divider.
I2C interface for LCD2x16 is wired to A4/A5 pin. You will need <LiquidCrystal_I2C.h>, <OneWire.h> libraries.

You can defined the threshold in the code, to monitor Vcc value, more or less than 5 volts for example, that the same for temperature.

Alert will be displayed on the screen, also a digitalwrite() (choice what pin you want), can drive a fanless, LED, relay to off the power-supply, or drive a Raspberry  I/O pin (emergency power-off, email alert …)

Gerber file available

Domotic, IoT-M2M

Postbox detector with SigFox Akeru board

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The idea of this project is to easy detect if the postman has put some letter’s in the box … or not. Problem, i live in a apartment, 3th floor, no communication link can be established between my apartment and the mailbox, Wifi networks are not available, ISM 433mhz, 2.4ghz link don’t work, GSM consumption is to high … but SigFox Akeru board work like a charm, amazing for only 25mw of output power with a lot of concrete and metal around…

2015-12-07 17.17.44 Continuer la lecture de Postbox detector with SigFox Akeru board →

Domotic, IoT-M2M

ArduiHome redesigned with EasyIoT libraries

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Since I have discovered EasyIoT lib, i consider to redesign completely ArduiHome project. EasyIoT librarie support ESP8266 wifi , and NRF24L01+ shield, the wireless probe pcb will be use, with minor modifications.

I plan to use:

Temp/Humid sensor DHT22 for two bedrooms, and only Temp sensor for kitchen, bathroom, living-room, and maybe one sensor, Temp/Barometric Pressure for outside.

Also, somes security sensor’s like Carbon monoxide MQ7, and Gas Town MQ5/MQ6 will be add with use of SMS API from my mobile phone provider.

The server will run with EasyIoT server with a RaspberryPi2-1Gb, and a 4×20 LCD screen to display informations from sensor.

EasyIoT

Domotic, IoT-M2M

Wireless RF probe for Arduihome

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Update [17/02] – Project redesigned, look this following post.

Update 27/01, I ‘ll finally use ESP8266 chip, for the same cost, Wifi connections on the probes will be more flexible, eliminate any constraints, quantity of probes, signal multiplexing, and data exploitation …

Under development, some wireless probe in the goal to send data’s, temperature and humidity level directly to arduino, with displaying on a 2×8 LCD in live, using NRF24L01+ RF chip and DS18B20, DHT22 probe. The board is compatible with both. Continuer la lecture de Wireless RF probe for Arduihome →