Coop Build Coordinator
I have to agree. Nicksydney if you have not already done so please take the time to read about BLCD motors.
You are just gessing and it will not work!Just to add to my previous post another thing that I tried after trying out the LED was I connect the common connection of the motor to the positive of the battery and connected the output pin of the ULN to one of the motor connection but I can't see any movement at all, seems like it's not making any difference to it.
Read post #11
you need to figure out just how the motor is wired 1st.
Brushlees motors may only have three leads.
Stepper motors may have 4 leads
I don't think this is a definitive way to tell what is connected to what.How did I find which pin does what ?
Using a 3v cell coin battery I tried to find which connection from the flex cable is ground (you can see the labelling of the connection in the file 'marked.jpg' and I found that the left most seems to be ground as when I put the negative of the battery in there and move around the positive of the battery I can see the motor move or have a jerk movement and this happens for all the 3 connections after the ground connection (as I've labelled + in 'marked.jpg')
Thinking that I found the connection so I dive into Arduino
The leads should be cheaked with a meter and the resistances posted.You can tell the difference with a multimeter. If one wire is half the ohms when checked against the others that wire is the "center" point of the "star".
There are also BLDC motors that are wired in the "star" configuration, instead of "delta". A "star" BLDC has four wires coming out. A three wire BLDC is a "delta" motor. A star BLDC is usually a low voltage motor also.
To the OP; why not check the wiring inside the CD rom and see what the motor driver IC number is. Then google for data on that, it will tell you if it is an IC to drive a 3 phase or 2 phase, star or delta etc.
He's lazy. Well, that's probably not fair as he took more time to take and post 5 photos than the time it takes to look it up?
Nicksydney said:I'm not taking your lazy comment seriously as I assume that you are just fooling around. ...