Archives par mot-clé : arduino

Ham

DRA818 Transceiver with Arduino

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prototyp

 

This is a small prototype of future TRX for 2 meters band, the goal is to make a very simple construction for mobile usage, Based on DRA818 chinese module, he use Arduino with a rotative encoder some small buttons.

Some details:

– Coverage from 144 to 146 (possible extend from 134 to 174).
– Mode VFO or Repeater (shift -600k) with 1750Hz carrier.
– Function: Scan (not implemented yet), Memory, Step (5/10/12.5/25/100k), Wide/Narrow 12.5/25Khz, Power output 5/20W (with old TRW20 PA module).
Continuer la lecture de DRA818 Transceiver with Arduino →

Gadgets

Si4703 small simple FM radio with Arduino

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radio_sdb_front

Again, a FM radio project based on Si4703 breakout board with Arduino, for your bench-work, bathroom … you can listen your programmed favorites radio station, build’s very simple, The breakout provides access to SDIO and SCLK for I2C communication while RST can be used for easy resetting. I use Arduino 3.3v@8Mhz, audio output is wired to Mini PAM8403 5V 2Channel USB Power Audio Amplifier with volume Control board, (1$ on ebay), a simple push button is dedicated to change station quickly by a simple « press », Continuer la lecture de Si4703 small simple FM radio with Arduino →

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