WeMos D1 Mini Motor Drive Shield (HCWEMO0010)

Wemos ESP8266 based development boards and shields *** NEW***
glennpierce
Posts: 5
Joined: Tue Dec 05, 2017 10:49 pm

Re: WeMos D1 Mini Motor Drive Shield (HCWEMO0010)

Post by glennpierce » Tue Dec 05, 2017 10:57 pm

Was this issue ever solved.
I have exactly the same issue.

No moving motors.
A small dc voltage of the motor pins.

The motor works.
The serial console shows messages moving the motors.


I2c scanner finds no devices.
Wemos D1 mini
I am using a geared dc motor from ebay. Works when applying voltage directly.

Any ideas ?

Not sure it can be a hardware issue with a few people having the same issue.

Thanks

andrew
Site Admin
Posts: 785
Joined: Sun Aug 05, 2012 4:15 pm

Re: WeMos D1 Mini Motor Drive Shield (HCWEMO0010)

Post by andrew » Wed Dec 06, 2017 10:33 am

So far we have not had any confirmed issues with this item and we've not been able to replicate the problem ourselves. If there is some sort of issue we would certainly like to get to the bottom of it. Could you possibly confirm a couple of things:

Does your reported issue happen when you use the example sketch the first post of this thread?

I cant find your details in our system so can I check if the shield was purchased from us? The main reason for asking this is that the shields we sell are genuine WeMos parts but there are clones/counterfeits on the market so it would be useful to establish if you have a genuine WeMos part or not.
Comments made by this poster do not necessarily reflect the views of Hobby Components Ltd.

glennpierce
Posts: 5
Joined: Tue Dec 05, 2017 10:49 pm

Re: WeMos D1 Mini Motor Drive Shield (HCWEMO0010)

Post by glennpierce » Wed Dec 06, 2017 5:46 pm

Yep I used the sketch at the top off the thread.

I do see i2c traffic on pins d1 , d2 with the scope. I don't think there is any connection issue as I have been over the joints a few times and connected a second different shield to another wemos with the same results.

To be honest the boards may well be clones I have had them a while. Think they were part of a bundle of things I asked for as gifts.
I'm starting to suspect that is the issue as there is not much else to check really. I will try to get a official one.

Thanks

glennpierce
Posts: 5
Joined: Tue Dec 05, 2017 10:49 pm

Re: WeMos D1 Mini Motor Drive Shield (HCWEMO0010)

Post by glennpierce » Thu Dec 07, 2017 12:54 pm

Ok I got it going.

First I had to rewrite the firmware as described here.
https://hackaday.io/project/18439-motor ... rogramming

I also had to desolder the standby pad on the back of the shield so it can be controlled with i2c.

glennpierce
Posts: 5
Joined: Tue Dec 05, 2017 10:49 pm

Re: WeMos D1 Mini Motor Drive Shield (HCWEMO0010)

Post by glennpierce » Thu Dec 07, 2017 12:54 pm

Ok I got it going.

First I had to rewrite the firmware as described here.
https://hackaday.io/project/18439-motor ... rogramming

I also had to desolder the standby pad on the back of the shield so it can be controlled with i2c.

andrew
Site Admin
Posts: 785
Joined: Sun Aug 05, 2012 4:15 pm

Re: WeMos D1 Mini Motor Drive Shield (HCWEMO0010)

Post by andrew » Thu Dec 07, 2017 4:34 pm

Ah, was just about comment on re-flashing your firmware but looks like you already figured it out. I'm not sure if the firmware in the clones is the same version as in the original WeMos version. As I can't replicate the problem and not yet seen any sold by us with this issue I'd suspect it is different. Glad you managed to solve your problem anyway.
Comments made by this poster do not necessarily reflect the views of Hobby Components Ltd.

glennpierce
Posts: 5
Joined: Tue Dec 05, 2017 10:49 pm

Re: WeMos D1 Mini Motor Drive Shield (HCWEMO0010)

Post by glennpierce » Thu Dec 07, 2017 10:31 pm

Yes I expect the firmware is different because until I reflashed the i2c scanner could not find any devices.
Thanks for the help.

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