Magnetic Loop Controller PCB board (TF3LJ/VE2LJX) - initial test HD

This is a magnetic loop controller board designed by Loftur TF3LJ and VE2LJX. This PCB was designed by 9A3GOS (me) and assembled by two assembly factories. Each factory made 5 boards (minimum order quantity). I will keep one board from each factory and give away another 8 of them for free to fellow radio operators. Boards are assembled without a stepper driver and teensy microcontroller. There is one via under the stepper driver which could be a little bigger, but I was driving 2 amps to a stepper motor without an issue. Original design and documentation: https://sites.google.com/site/lofturj/to-automatically-tune-a-magnetic-loop-antenna At the end of the page you will find Automatic_Magnetic_Loop_Controller_BOM_and_building_instructions_Rev3-Rev4PCB_r02.pdf You can upload a compiled hex file to a teensy microcontroller or use Arduino environment to modify it and compile it yourself. I am in a process of making a magnetic loop antenna with integrated air capacitor. Antenna will be controlled with this loop controller expanding antenna radius/circumference and capacitance in the same time. Sorry for my bad english :) Music: https://www.bensound.com