Lego-Car (WeMos Mini D1 and L293D Motor Shield)

hanging out for video

Electric Lego car!!! Suck on that Tesla! Haha. Super cool :slight_smile:

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@Dave1829, I’ll keep the Car out of my daughter’s hands and upload the video.:wink:

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Video ready at the edited first post!

Hope you like it!

@psoro Is that local server? Or Blynk cloud? I see no delay.

Local Server @Dmitriy, no delays!

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Super cool! I’m ordering right away that motor shield…
Thank you

Glad you like it @gusgonnet, this shield is homemade, you won’t find it anyway…

Kind regards!

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Do you have a schematic or some sort of guide how you made this shield? I usually order them, but I really don’t like all the LED’s they put on there. How much power can this handle?

Cool car . which batteries you have used??

@Lichtsignaal you have to design shield according to your need .
Use basic digram of ic to design it .
I had simply made motor driver for this my this project

Hi @Lichtsignaal,
The L293D can handle 600mA OUTPUT CURRENT CAPABILITY
PER CHANNEL and 1.2A PEAK OUTPUT CURRENT (non repetitive) PER CHANNEL.

You can find below schematic:

The Vin line is 6.5V min and 12V max. (you can feed directly 5V removing the ASM1117-5V)
The Vmt line is 4.5V min and 36V max.

You can find HERE the Motor Shield made by WeMos as alternative.
But… It seems (as per WeMos forum) the board doesn’t like delays above 10 seconds (https://forum.wemos.cc/topic/317/d1-mini-motor-shield/29)

Regards!

Hi @saurabh47,
I’m using 2 x 18650 3.7V 2200mAh Li-ion Rechargeable Batteries.

Regards!

How much do these cost at your local store?

@Costas,
About 7 or 8€ each. I don’t remember… It was a long time ago…:blush:

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Thanks very much for the info! I assume I can use this to drive stepper motors too? Yeah probably, lol. Al right China, watch out, here I come :smiley:

For sure, you can use the L293D to drive stepper motors, but if that’s your idea, consider using the A4988 driver, it’s really easy to use with the AccelStepper library and works fine with the WeMos mini D1

BR

Hello psoro,

Can you guide me how to use Wemos D1 R2 and L293D motor shield?
I don’t know if it can work. And what pins to control?
Thanks you,
An.

Hi @AnTran,
Are you talking about the Adafruit Motor Shield for Arduino V 1.2 or something like this?
You can’t use this shield. This motor shield is controlled via the 74HC595 serial-to-parallel latch.
The pins for Dir_Ser and Dir_Lach are the same (D6) at the Wemos D1.

HTH

Kind regards

me too. did you find it?