Motor PWM problems

Matthew
Guest

Motor PWM problems Mar 27, 2019 10:13:10 GMT

Quote

Post by Matthew on Mar 27, 2019 10:13:10 GMT

Hi,

I have got my eChook all set up and all the features work well apart from the MotorPWM output.

Currently when I press the throttle button:

Pin D5 on the Arduino goes to 5V
The PWM LED turns on
The MotorPWM output on goes to 2.67V

Additionally, on releasing the accelerator button it takes about one second for the arduino output to respond.

Can you suggest any solution, or do you have a circuit diagram for the board so I can do more fault finding.

Thanks

Matt

Rowan
Administrator

Forum Admin

Posts: 195

Motor PWM problems Mar 27, 2019 11:34:36 GMT via mobile

Quote

Post by Rowan on Mar 27, 2019 11:34:36 GMT

Hi Matt,

Glad it's mostly working...

The circuit schematic is here: docs.eChook.uk/circuit-schematics/pwm-output

First things to check are the resistor values, then the voltages at the components, if no issues are found I'll have another think!

The delay on the throttle backing off is odd, have you modified the Arduino code at all? I'd set debug to true in the code then add a serial print every time it reads the throttle and updates the pwm, then you can watch it through the serial and get more of an idea what's happening.

Edit: is the output from the board connected to anything when you measure 2.7v?

Last Edit: Mar 27, 2019 11:36:24 GMT by Rowan

Get in touch: info@echook.uk

Our new shop: shop.eChook.uk

eChook Documentation: docs.eChook.uk

sammi Guest	Motor PWM problems Nov 21, 2019 11:58:10 GMT Quote Select Post Deselect Post Link to Post Back to Top Post by sammi on Nov 21, 2019 11:58:10 GMT hi, I am trying to solder the hall effect sensor to the project but can not figure out which leg is which, how do I identify this? thanks sammi

Rowan Administrator Forum Admin Posts: 195	Motor PWM problems Nov 21, 2019 12:37:41 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Rowan on Nov 21, 2019 12:37:41 GMT Hi Sammi - They're detailed in a post here: echook.boards.net/post/139/thread Hope that helps
	Get in touch: info@echook.uk Our new shop: shop.eChook.uk eChook Documentation: docs.eChook.uk

sammi Guest	Motor PWM problems Dec 3, 2019 13:00:10 GMT Rowan likes this Quote Select Post Deselect Post Link to Post Back to Top Post by sammi on Dec 3, 2019 13:00:10 GMT Hi Rowan, Thank you that contained all the information I was looking for

Post by Matthew on Mar 27, 2019 10:13:10 GMT

Post by Rowan on Mar 27, 2019 11:34:36 GMT

Post by sammi on Nov 21, 2019 11:58:10 GMT

Post by Rowan on Nov 21, 2019 12:37:41 GMT

Post by sammi on Dec 3, 2019 13:00:10 GMT