CrocSeeCrocSee Micro 3 Phase AC Mini Hand Brushless Motor Generator Model Science Experiment Teaching Aid Kit DIY

My picture shows it being a generator spun by an and battery screwdriver at about 300 rpm . I also ran it as a motor with the HiLetGo 3 phase brushless dc driver at up to 14 volts. It’s not a powerful motor - I can stop it with my fingers. Great for demo though. I also made a 3 phase full bridge rector for it just to show how that works. All in all pretty neat. I only wish I could see how it’s wired as that would bring it all together as an educational thing.

Great learning device for children.

What I expected, cool little gadget. The only reason I'm giving it four stars instead of five is because I'd like to get these but bigger in size which I couldn't find.

This thing is smaller than I expected, but if you look at the Amazon page carefully and compare with the LED, you can estimate its size. Or, look at the photo here. I tested it this evening with another product bought on Amazon (a 3-phase motor controller from Sydien), and was able to get the CrocSee Micro 3 spinning nicely. But only after feeding the controller with 12 to 15VDC. Lower than that and I could not get it to spin up and sync with the Sydien controller pictured.Used as a generator, it also works, of course. Comes with an LED plugged into two of the three pins on the connector. If you spin the shaft quickly with your fingers, it nicely lights up the LED in a pulsed fashion. Not terribly bright, but it seems to have a lens to focus and is fine for indoor observation. Unloaded, I measured about 2V AC (peak) with a quick finger-spin. With my DMM, I seem to read around 2K Ohms per winding - but that varies (maybe due to AC noise picked up by the coils from the room lights?).So don't expect much current from the thing used in generator mode. 2V and 2K is 1mA at this speed. 10 times faster and I would expect maybe 10 mA - which seems consistent with the kind of numbers I got when monitoring the full current when operated as a motor (about 30 mA at 50 RPM).Of course Safety should always be considered. You don't want a big high-powered, high voltage, high current device for teaching and experiments. (All my motor experiments on the CrocSee Micro 3 used a low-voltage (< 15V), wupply with current limit)Your mileage may vary of course - but for a nice little motor/generator intended for experiments and as a teaching age, it satisfied my needs - especially at the price !

I want to build a wind powered generator at my mountain cabin. But I wanted to design the best wind blades I could before I build it full size. this is very small but works as a generator would. I will take readings from different blades I design and find the best set. Then I will scale it up for a bigger genrator so this is helping in design for a big wind turbine. This keeps the cost down while I figure out what blades would work best.

It is tiny. I wanted to show my grandkids how an electric generator works. It would’ve been nice if you could open it and see the inside. It’s kind of a novelty, but I wouldn’t have bought it if I knew what I got.

This is an extremely small generator. You can move its spindle by your fingers to light the bulb. We made a water turbine to show how moving water can generate electricity.It is hard to measure the voltage coming out of it when the bulb was lit. I wish it had longer leads. You need high water force to move it (as a turbine) and light up the bulb. We got it to work. The thing we would have liked is to be able to measure voltage/current generated as we varied the speed of the water. We were unable to do that.

As a teaching tool, the only negative thing I can say is it's small. But it is described that way! By just spinning the shaft with your fingers, all 3 phases produce enough voltage to brightly illuminate different color LEDs. Phase shift between the 3 different voltage leads appears nicely on a scope. Comes apart easily too! I bought a second one to try and drive it using the first one as a generator. I can see using a tiny steam turbine to drive the thing. I'll let you know if it works!