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| Can anyone help me wire up this motor driver? |
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| Mysterioii:
edit: nevermind, mis-interpreted something.... ;D |
| DaOld Man:
If you are getting correct voltages on all the pins, only other thing I see is that the datasheet 6 shows a 10K ohm resistor between pin 1 and +5VDC. Could the enable input on this drive be sensitive to high current? Chip might be fried, but Im not sure about this, info on the data sheet doesnt mention current limit on enable, but I could have missed it. |
| Mysterioii:
Really not trying to just echo everything DaOld Man says but it's turning out that way... ;D Nothing really stands out to me either. I wouldn't think that the resistor on the enables would really be critical, but they must've shown it for a reason. I would definitely agree that you should swap out the chip if you have any spares (hope you got some spares.... I'm a big fan of having spare components on hand especially if they're on the inexpensive side). Only other thing I can think of is that maybe the outputs need to see some sort of a load but from reading the spec sheet it really doesn't seem like that would be the case. |
| EightBySix:
thanks guys - I've bought another - £2.29 posted :-) It's not beyond the bounds of possibility I got the 5v and 12v inputs confused during my experimentation. Now I know the chip better I should be OK, and I'll put those resistors in next time. |
| Mysterioii:
Mouser has that chip for $1.88, but I don't know what it would cost to ship it to ya. In general if I'm using a component that's only a buck or two then if I just need one or two I'll order five... :lol http://www.mouser.com/ProductDetail/Texas-Instruments/SN754410NE/?qs=AMJt07B76utKvnsRwAi7IVwhWyNixSPdHn7ATYAoPP4%3d |
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