Following recently published article about building a PWM Fan Controller here is another simple controller design. This time it’s a 2 Channel PC Fan Controller for standard 12V Fans. It uses software implementation of PWM but instead of directly driving PWM Fan the output is converted to 3 different voltage setting: High +12V, Medium +10.5V and … Read more
Light emitting diode (LED) Controller was built using PIC microcontroller and LM317 regulator. Comparing to traditional light sources led illumination should provide more efficient lighting also giving you a possibility to choose desired wavelength. 48 white diffused LEDs connected in parallel were used as controller load to provide sufficient light intensity for a small workplace. Controller circuit … Read more
A simple wave generator should be a part of every electronics enthusiast toolset. Basic Sine/Square output in reasonable frequency range will be sufficient for general use. Luckily such generators are available in form of a very popular AD9850 module. Search the web for AD9850 designs/code and you’ll find a lot of material available on how to build … Read more