Shift register

Wide box Tiny box List
Ascent Descent

ChibiCube hardware explained

ChibiCube hardware explained

By this article, we will show schematic of ChibiCube in order to understand how it works and hot it has been designed.

As mentioned in the previous article, ChibiCube addresses all its LEDs through the combination of anode and cathode signals. Each floor of the cube is configured as common anode, while the various cathode signals are separately connected to the outputs of the Shift Register. Setting the anode voltage to a value equal or greater than the high logical threshold of our SR, for the same principle illustrated in the tutorial Meeting SPI, we can address single continue reading...

Introducing ChibiCube

Introducing ChibiCube

ChibiCube is a 3D LED matrix 8x8x8 composed by monochromatic LEDs individually addressable: that means not only every single LED could be in a ON or OFF state but everyone could be set at different light intensity.

In December 2012, students Ciro Domenico Pagano from University of Salerno, Antonio Galano from Federico II University of Naples and Vincenzo Brillante from University of Sannio start their training at Naples site of ST Microelectronics.

In order to understand uses of ChibiOS and STM32 MCUs, their Tutor Giovanni Di Sirio suggested the design of a small 4x4x4 continue reading...

Meeting SPI

Meeting SPI

Communicating by a serial bus instead of a parallel one could be very useful when we need to send out a big number of words or fixing a constraint on wires. The Serial Peripheral Interface bus, also known as SPI bus, is a synchronous, serial communication peripheral which communicates in full duplex mode using a master-slave architecture with a single master. That means we have always a single master and one or more slaves. The communications is bi-directional (i.e. data flows from master to slave but also from slave to master). Since this bus is synchronous, the master continue reading...