Archive for November 2012

Advanced Slave Camera Flash Controller

Simple slave camera flash (or synchronous flash, like this one I built earlier) works great with older film cameras, but does not work with modern digital cameras. This is due to the fact that the majority of the digital cameras nowadays employee a so-called pre-flash for metering purposes prior to the actual shooting. The pre-flash causes the slave flash to be triggered prematurely which inter has a detrimental effect on the picture taken, causing the scene to be darker then done without using the slave flash since the camera thinks the environment was lighter than it actually was when the slave flash was triggered. Continue reading ‘Advanced Slave Camera Flash Controller’ »

Hex/Bin/Dec Converter And Calculator — Updated

Based on some user feedback, I have updated the Hex/Bin/Dec converter and calculator I created a couple of years ago. Added features include shortcut to clear all fields and additional calculations besides bits manipulations. Continue reading ‘Hex/Bin/Dec Converter And Calculator — Updated’ »

DDS Function Generator Build

I picked up an AD9850 DDS module on eBay an couple of weeks ago and decided to build a MCU controlled DDS function generator with it to replace my crude frequency generator I built earlier. Continue reading ‘DDS Function Generator Build’ »