Sandclock for Arduino

easy Hourglass for Arduino

V1.6 - 17 february 2016 Blenderlab (http://www.blenderlab.fr / http://www.asthrolab.fr) Fab4U (http://www.fab4U.de)

• Randomly choose the amout of sand to fill the upperglass
• Drops one marble every second
• Can be shaked to reset counter
• Display time once the globes are empty

Hardware needed :

• Arduino (Uno,Mini,Micro...)
• 2 Led Matrix with MAX7219 controller
• Wires, powersupply ...;-D
• DS103 Real Time Clock (for time memory)
• SW350D or any digital vibration sensor (SW320D ...)
• Standing stuff is ready to print : http://www.thingiverse.com/thing:1316240

How To :

• Connect the first matrix to the arduino (5 pins, as follow)
• Connect (chain) the second matrix to the first one : All same pins except (DOUT->DIN)
• That's it !

Todo

• Interface to select the duration (Touch button)
• Interface to set Time (Touch buttons too ?)