Julien Vanier - Arduino Project Hub

monkbroc

A whimsical weather clock powered by Particle and forecast.io

Project tutorial by Julien Vanier

How did I stand out at prom? In a light up dress of course!

Project showcase by Maddy

Globe Trotter is a fun and tangible picture viewer.

Project showcase by carolinebuttet

Arduino Gemma and Neopixel LEDs to give some life to my 3D Printed Princess Hilda Staff: Zelda Link Between Worlds.

Project showcase by Amie D.D.

What should I wear outside? over 2 years ago
I think it was a 2N2222, but any NPN should work. Note that I used the transistor to switch ground to the servo, not battery. Also try different values for the base resistor to make sure the transistor switches on fully when the microcontroller pin is high.
UNIX Time Clock about 3 years ago
Clever! I love it.
What should I wear outside? over 3 years ago
A simple way to implement persistent state on the particle platform is to use the EEPROM (byte readable and writeable storage).
```
double value = 5.0;
const int address = 0;
EEPROM.put(address, value);

// at next boot
EEPROM.get(address, value);
```
We talked in the forum about power supplies. Are you good with that for now?