The little circuit board should help you figure it out. The big black rectangular thing is the optical encoder. This looks like it might have 4 connections, which probably connect to 4 of the pins. The other 2 are probably the motor winding. Test the resistance of the assumed motor winding. I should be in the 10s to 100s of Ohms. If so, apply 3V and see if the motor spins.
The 4 encoder pins are likely to be 2 for and LED and two for a phototransistor. You should be able to find the 2 for the LED by using say 3V and a 1K resistor and and ammeter. Look for a connection that gives you a few mA of current. The other two will be the phototranstor. It could be NPN (most likely) or PNP and the two pins are the emitter and collector. Wire it up with a 10K from one pin and the other pin to a 3V battery. You can try both polarities and both pins for the collector (the one with the 10K). One of these will give you a good signal at the collector (0V, 3V) as you rotate the shaft.
Bob
Edit: Did the seller at least give you an idea of voltage and current?
The 4 encoder pins are likely to be 2 for and LED and two for a phototransistor. You should be able to find the 2 for the LED by using say 3V and a 1K resistor and and ammeter. Look for a connection that gives you a few mA of current. The other two will be the phototranstor. It could be NPN (most likely) or PNP and the two pins are the emitter and collector. Wire it up with a 10K from one pin and the other pin to a 3V battery. You can try both polarities and both pins for the collector (the one with the 10K). One of these will give you a good signal at the collector (0V, 3V) as you rotate the shaft.
Bob
Edit: Did the seller at least give you an idea of voltage and current?
No the seller has no information, that usually happen when you sell stolen stuff.
I found this
http://reprap.org/wiki/Optical_encoders_01
Will try to measure in diode mode with my multimeter, will upload better photos of the sensor and motor pcb
http://reprap.org/wiki/Optical_encoders_01
Will try to measure in diode mode with my multimeter, will upload better photos of the sensor and motor pcb
Using multimeter in continuity mode and a watch 3V battery (from multimeter the LED will not light) I got this pinout. I also used camera to see the IR LED work.
The measurements in diode mode failed as the PCB has multiple components and tracks are interconnected, the multimeter shows nonsense. I could not de solder the sensor because I do not want to change alignment etc.
In my inquiry for pinout Mabuchi answered my email with this nonsense:
"Dear Sir,
Thank you for being interested in Mabuchi motors.
Mabuchi Motor (Europe) in Frankfurt, Germany is responsible for commercial and technical support of customers in the whole of the European market.
We do have a minimum quantity of 10.000 pcs per lot due to our mass production system. If you can accept this quantity please contact us again. We don't have any distributors.
Thank you for your understanding.
"
The measurements in diode mode failed as the PCB has multiple components and tracks are interconnected, the multimeter shows nonsense. I could not de solder the sensor because I do not want to change alignment etc.
In my inquiry for pinout Mabuchi answered my email with this nonsense:
"Dear Sir,
Thank you for being interested in Mabuchi motors.
Mabuchi Motor (Europe) in Frankfurt, Germany is responsible for commercial and technical support of customers in the whole of the European market.
We do have a minimum quantity of 10.000 pcs per lot due to our mass production system. If you can accept this quantity please contact us again. We don't have any distributors.
Thank you for your understanding.
"
Attachments
AFAIK channels AB are interchangeable, you can connect them in any way?
What is interesting is that Mabuchi optical encoder and a hall effect motors are wired in mirror. You will burn your motor sensor by wiring hall effect Motor by using same cable as motor power pins will be for channel AB.
Very BAD design if you ask me.
What is interesting is that Mabuchi optical encoder and a hall effect motors are wired in mirror. You will burn your motor sensor by wiring hall effect Motor by using same cable as motor power pins will be for channel AB.
Very BAD design if you ask me.
Similar threads
