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Step 10Testing
Now you are ready to test the circuit with the stepper motor to make sure that all your connections are soldered properly and all of the components are placed correctly.
Insert the leads of the stepper motor onto the 5 pin male header. The black lead of the stepper motor should be placed on the pin that is not labeled Coil 1 or Coil 2. Use your multimeter (set to DC voltage) to measure the voltage the generator is producing when you turn the shaft. Place the positive (red) probe of the multimeter onto the positive screw of either terminal, and the negative (black) probe onto the negative screw of the same terminal. Turning the shaft by hand should yield in the vicinity of 4-8 volts.
If you are not seeing results, here are some troubleshooting tips:
1)Check all of the solder connections to make sure everything is fully soldered and connected to one another. Conversely, make sure connections that should not be touching are not together.
2)Make sure that all of the diodes are pointed in the proper direction as indicated on the printed board diagram.
3)Check that the leads of the motor are inserted properly - the black wire from the motor should not be placed on either of the Coil 1&2 pins.
Insert the leads of the stepper motor onto the 5 pin male header. The black lead of the stepper motor should be placed on the pin that is not labeled Coil 1 or Coil 2. Use your multimeter (set to DC voltage) to measure the voltage the generator is producing when you turn the shaft. Place the positive (red) probe of the multimeter onto the positive screw of either terminal, and the negative (black) probe onto the negative screw of the same terminal. Turning the shaft by hand should yield in the vicinity of 4-8 volts.
If you are not seeing results, here are some troubleshooting tips:
1)Check all of the solder connections to make sure everything is fully soldered and connected to one another. Conversely, make sure connections that should not be touching are not together.
2)Make sure that all of the diodes are pointed in the proper direction as indicated on the printed board diagram.
3)Check that the leads of the motor are inserted properly - the black wire from the motor should not be placed on either of the Coil 1&2 pins.
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Jun 18, 2008. 7:52 AMcb_designer
says:
so I've been looking for the KP4M4-029 motors and it seems they have been discontinued... any suggestions on an alt. step motor? or where i can by this motor?
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May 13, 2009. 3:30 PMmrbybee
says:
Go to your nearest goodwill and buy an old printer. Doesn't matter if it is ink or laser, and rip it apart, there should be a motor inside that works.
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