![Small, cheap UPS for Raspberry](https://www.f4huy.fr/wp-content/uploads/2017/09/Rpi_UPS-3-470x140.jpg)
As you know, if you use Raspberry, the operating system on SdCard is very fragile, that the reason you need to power off properly the…
![Breadboarding and flashing firmware of ESP8266 ESP-03 SMD](https://www.f4huy.fr/wp-content/uploads/2015/05/ESP8266.jpg)
A lot of informations are available about ESP hardware over Internet … sometimes confusing, here is my experience’s about ESP8266 soldering and flashing, especially ESP-03…
![TinyGPS lib and 4x20 LCD i2c Screen](https://www.f4huy.fr/wp-content/uploads/2015/02/IMG_8491.jpg)
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,…
![Burn a Arduino bootloader to a blank Atmega 328 with optiLoader](https://www.f4huy.fr/wp-content/uploads/2013/03/001.jpg)
Optiloader is a sketch designed for bulk upgrading of Arduino board bootloaders using another Arduino as a device programmer. It stores multiple copies of the…