Tag Archives: display

CuVoodoo #021 – on my mark

building a digital clapperboard:
Clapperboards are often used to synchronize audio and video recordings. I'm also using such a tool for the podcast, so I decided to make my own digital version of it. After all I only have to show the scene, take, video and audio recording numbers. This can easily be done using electronics instead of having to write everything down myself. For that I used a DS1307-based RTC module using the I²C protocol, seven TM1637-based 7-segment 4-digit displays using an I²C incompatible protocol, two MAX7219-based 7-segment 8-digit displays using a SPI compatible protocol, a piezoelectric element, and a custom power control circuit. We will also see how these communication protocol work.

documentation source files watch on other devices (youtube)

Published: 2017-06-06 by King Kévin

CuVoodoo #015 – conducting fireflies

driving a vacuum fluorescent display:
The vacuum fluorescent display I salvaged from a Samsung SER6540II was only waiting to get used. This was the ideal opportunity to learn how these retro style displays work (through Supertex HV518 drivers) and get familiar with a new micro-controller (ARM Cortex-M3 based STM32F103).

documentation source files watch on other devices (youtube)

Published: 2016-02-06 by King Kévin