@redhank Sorry for the late reply, so you have tested the fans which do spin when they have direct power. Please can you confirm: Do the lights on ...

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@bjc1 Hi, sorry for the late reply, checkout the video which can be found here if you haven't already:/p> In Simhub when you setup the Arduino, unde...

@jimboselecta Hi, glad the guide has been useful. So the Motorshield rev 3 can provide up to 4amps in total, 2 amps per channel, but after 2amps in to...

@guytrgn Glad it's sorted 👍

@guytrgn that's the first time I have heard of that. You shouldn't need to power the arduino Uno with the 12v, just usb. What psu are you using for th...

@markspurrell How frustrating, hope the next board sorts it 👍

@markspurrell How are you trying to test them, if it's by clicking test in Simhub, you have to click test several times very quickly for it to work. H...

@markspurrell This might not be it, but put the PSU wires back in how they were, making 100% sure that no wires are touching each other/shorting. Then...

@markspurrell Hi, please can you take the psu wires out of the terminals and take a close up picture of the wire ends, in the pic it looks like one of...

@neil_1980 glad you kind of got it working. I found with mine that the fans would cut in and out and ramp up/down, it was due to the minimum force/pow...

@r-v sorry for the slow reply, so different fans have a different starting voltage/power requirement, it is worth checking if the details are known fo...

@r-v Note that the Cytron MD10 is a cheaper single channel motor shield, so you would put the two fans into the same channel, or if you want to be abl...

@r-v Note that the Arduino Motor Shield Rev3 can provide up to 4 amps, 2 amps per motor channel, but once 2amps total is reached the voltage drops to ...

@r-v I have seen with others that the fans still spin if some of the wiring is the wrong way around with testing it on the motor shield, but then it n...