After recently learning that the ESP-32-WROOM has a built-in ADC (Analog to Digital Converter), I started trying to figure out a good project to use it for. I have some knowledge of ADCs and DACs from my EE days, but I haven't used them outside of the context of an SDR. I figured a simple BPM meter would be a good project to help me learn how to use the ADC in a microcontroller. The device will connect to the RCA output or headphone output from a mixer and use the ADC to measure the voltage of the audio signal. It then uses a simple algorithm to calculate the BPM of the music. It also uses a .96" LCD display to show the BPM and a series of resistors and capacitors to filter the signal and keep the voltage at a safe level for the ADC. Github link, component list, and 3D case model will be added shortly.
**This project is still in progress and not based on an existing project. Therefore, I have no idea if this will reliably work. I will update this post when I have done more testing.**

I have a bunch of new 80mm PC fans that I have been looking to use for a project.I decided to finally build a 3D printed fume extractor for my soldering station using 80mm PC Fan Soldering Fume Extractor.

Started rebuilding the NOTCHACOTCHA repo. Planning to build a Flipper Zero compatible board for laser jamming using the Notchacotcha project as a base. I still need to research the laser radar technology currently deployed by local law enforcement.

Added external SMA jack to Lenovo T480 to be able to quickly test external antennas. Currently testing L-Com 2.4 GHz 15 dBi Yagi Antenna.