I’d like to build a small diorama with a custom PWM controller like the one in this YouTube video: I currently have the battery-operated (2 AA batteries) Rokuhan RC004. I don’t need power for lights, just for the tracks. I don’t know much about current, voltage, resistors, amps... Although, I can solder and have soldered LED lights with a battery holder before. Can I use any one of these PWM controller and hook up to a battery holder? The first controller says 6V, can I use a 4 AA battery holder and the second one says 3V, can I use 2 AA battery holder? 6V 12V 24V 3A 80W DC Motor Speed Controller (PWM) Adjustable Reversible Motor Driver Switch https://www.amazon.com/dp/B07BLWXXQC/ref=cm_sw_r_cp_api_glc_fabc_hua8FbM9H43DF Low Voltage Dc 1.8v 3v 5v 6v 12v 2a Motor Speed Controller https://www.amazon.com/dp/B07P2BLG2L/ref=cm_sw_r_cp_api_glc_fabc_Cva8FbAPME6HY?_encoding=UTF8&psc=1 I can’t tell if these controllers are safe to run the Rokuhan Shorty trains. Thank you!