Hello, I am writing to ask if anybody has ever controlled arduino with a PLC. If yes, what DC/DC converter would you recommend. My PLC has output of 24 V, and arduino needs (7-12 V, I use 9V usually) Long time ago, I used DROK DC Voltage Converter Step Down Regulator that was adjustable. This time, I need something similar; however, I don't want adjustable converter, just constant 24_to_9V. There are many of them in the stores, however, I am not sure which one would be the best for arduino-PLC. Also, it should be able to handle about 1 A.