My Baofeng charger has just burned …
I didn’t want to buy a new one, it cost around 10$ … the batteries Baofeng is a Lion 3.7v 1500mAh, the good way is to replace the charger circuit with a another from Linear Technology, LTC4054-4.2, a resistor to set the charge current, one input capacitor, and a LED to look when the charge is over. Also, you can get the LTC4054 for free sample. Continuer la lecture de BaoFeng UV-3R charger repair
Archives mensuelles : février 2015
ArduiHome redesigned with EasyIoT libraries
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.
TinyGPS lib and 4×20 LCD i2c Screen
There is a sketch to display GPS informations from TinyGPS librarie for Arduino, the LCD is a 4×20 characters, wired through a I2C connection.
Before, you need to download and install:
– TinyGPS++
– Arduino Liquid Crystal I2C (mine use 0x27 I2C adress, in case you don’t know, use a i2c scanner)
(picture on top show the test with a Arduino Pro Mini, LCD 4×20 and EM-406 GPS head, the Lat/Long display is fake for the pictures only)