Hall effect sensor - emg49 Motor.

General discussion of using Roboclaw motor controllers
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mustafa.bozdag
Posts: 3
Joined: Tue Feb 20, 2018 4:54 am
Hall effect sensor - emg49 Motor.

Post by mustafa.bozdag »

Hi ION MOTION

I have four emg49 motor and two roboclaw. Duty mode ok i bud Speed mode i cannot use because of i havent get data from encoders.

Encoders are hall efect sensor. According to datasheet i can read encoders but i cant.

"Wires are the colours from the actual cable.
The hall sensors accept voltages between 3.5v and 20v.
The outputs are open collector and require pull-ups to whatever signal level is required.
On the MD49 they are powered from 12v and pulled up to 5v for the signals."

I have added 4.7k pull up resistors for Channel A and B. Is it right?

Please show to that which way i have to wiring encoder and pull up resistors?

Data Sheet.
https://www.robot-electronics.co.uk/htm/emg49.htm
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Basicmicro Support
Posts: 1594
Joined: Thu Feb 26, 2015 9:45 pm
Re: Hall effect sensor - emg49 Motor.

Post by Basicmicro Support »

Connect Robcolaw 5v to Vcc and Roboclaw GND to GND on the encoder
Connect Enc1A to A and Enc1B to B. It dont know if you need the pullups or not. If it does not work I will need to see an oscilloscope trace of both encoder channels while the motor is moving.
mustafa.bozdag
Posts: 3
Joined: Tue Feb 20, 2018 4:54 am
Re: Hall effect sensor - emg49 Motor.

Post by mustafa.bozdag »

Voltage of Channel A and B between 0.2 and 0.3 volt. Need pull up?
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Basicmicro Support
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Re: Hall effect sensor - emg49 Motor.

Post by Basicmicro Support »

Yes. The signal needs a low of around .4v(or lower) and a high around 2.5v(or higher). Otherwise the Roboclaw cant read the encoder.
mustafa.bozdag
Posts: 3
Joined: Tue Feb 20, 2018 4:54 am
Re: Hall effect sensor - emg49 Motor.

Post by mustafa.bozdag »

Thank you guys this very helpfull, o solved it.

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