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Topic: Smoke from the motor shield (Read 3850 times) previous topic - next topic

raschemmel

I think we need to know something about the motor. Motors and shields are not "one size fits all". How about linking the motor vendor so we can look up the specs ?
Arduino UNOs, Pro-Minis, ATMega328, ATtiny85, LCDs, MCP4162, keypads,<br />DS18B20s,74c922,nRF24L01, RS232, SD card, RC fixed wing, quadcopter

Mydakota

Hey guys I think I've done the same thing my Adifruit motor shield was stacked on the v3 Uno
I by mistake put 12vlts on the wrong terminal block thought because the driver had two motors it used two separate power connections so just connected to anyone lol. After the smoke the Arduino would not communicate correctly and time out uploading library's. So then I thought will that Uno is dead so I grabbed by other one lol put motor Shield on uploaded my library connected my motor put my 12vlts on correct terminal block this time all was good until putting power jumper on more smoke and another dead uno this time Unknown USB device error . I'm guessing my motor shield that seems to be OK is actually not and now frying everything it connects too. Now all my boards are dead is there any way to fix the Uno by replacing the big chip or is she toasted for good     

jremington


Southpark

Now all my boards are dead is there any way to fix the Uno by replacing the big chip or is she toasted for good     
What is damaged right now is definitely uncertain. Impossible to tell what's busted right now. If there's a lot of time on our hands.... then could start with replacing regulators.... or try to remember what was smoking, and replace that. Otherwise, to save time - just buy a heap more uno's - and next time just make sure everything is compatible (in advance). It's always tempting to just plug something in ..... and hope for the best. But certainly there can be the consequences to deal with later on if we didn't check on compatibility.

raschemmel

One problem I see is that there should be no 5V connection between the Mega and shield because both have their own regulators.
Arduino UNOs, Pro-Minis, ATMega328, ATtiny85, LCDs, MCP4162, keypads,<br />DS18B20s,74c922,nRF24L01, RS232, SD card, RC fixed wing, quadcopter

krupski

One of the (very knowledgeable) contributors on this site has a signature that states that everything runs on smoke - let the smoke out and it all stops working. Was he right?
You forgot the occasional shrapnel let loose in all directions from abused electrolytic caps.

The circuit may have released all of it's magic smoke and stopped working, but the caps are still out for revenge.

:)
Gentlemen may prefer Blondes, but Real Men prefer Redheads!

krupski

#21
Aug 14, 2016, 04:27 am Last Edit: Aug 14, 2016, 04:28 am by Krupski
Hey guys I think I've done the same thing my Adifruit motor shield was stacked on the v3 Uno
I by mistake put 12vlts on the wrong terminal block thought because the driver had two motors it used two separate power connections so just connected to anyone lol. After the smoke the Arduino would not communicate correctly
I once plugged a USB cable inside my computer into the IEEE 1394 header by accident.  The magic smoke escaped from my "multi-card reader" and I had to buy a new one.  :(

(I also made a red colored dummy for the 1394 header and made a small sticker with an arrow that says "<--- NOT USB")

Gentlemen may prefer Blondes, but Real Men prefer Redheads!

Grumpy_Mike

Quote
all was good until putting power jumper on more smoke
Never ever alter the wiring when a circuit is powered up. This is a universal rule in electronics.

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