Testing =============== Testing equipment: * Rohde & Schwarz RTB2004 (Fully unlocked) * JBC soldering iron * Siglent SDP 1168x * Sensepeek SP200 oscilloscope probe (200 MHz, 10:1) * RT-ZP03 probe (300MHz) * Segger J-Link * HP 34401A multimeter .. image:: testing_enviroment.jpg :width: 400 :alt: testing enviroment Testing shows that Everything seems to works fine, but there are few minor flaws: * Microcontroller can't drive fully proberly FET, somewhere at 98% PWM, signal doesn't go to zero voltage. * Some noise at FET gate when FAN is connected. .. image:: waveform.png :width: 400 :alt: testing enviroment Simple fix for first issue would be using FET driver chip, or use FET that has smaller gate capacitance.