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Topic: L293D overheated but not burned !! what's the solution ? (Read 5 times) previous topic - next topic

firashelou

#15
Jul 26, 2013, 12:44 am Last Edit: Jul 26, 2013, 12:46 am by firashelou Reason: 1

And no, there's 2 * 2 pins that are labeled GND and Heat sink.
As Grumpy_Mike explained a custom PCB can be made to act as heat sink (within limits).
A vero board can not, because it has no large piece of copper, just a lot of very small pieces.
Therefore a vero board will do a very poor job at this.



and if i attached a piece of metal to it, it won't work 2 ?

if there is no solution for this other than capacitors and inductor as suggested Grumpy Mike then what i can do is to put a temperature sensor which can tell me the temperature so when it gets close to 60 degrees to 70 degrees then a buzzer will make a buzz so i know that i must turn the system off and it will be safe then !!
Aiming for the unreachable !

firashelou

hey guys, because my projecg is around an rc f1 car so I just noticed that I can use the body of the car to cool the chip down, better than leave it like this, I can put it on one of the sidepods, the chip will be in a perpendiculaire line to the ground, the whole circuit of it will be so do you think this will effect anything any function or the position doesnt matter if we're talking electronics ? because physically the chip we'll be getting the maximum air,,, threw the hole of the sidepod
Aiming for the unreachable !

MAS3

These 4 pins are both GND and heat sink, not either one.
Use all 4 to have a more efficient path to get rid of heat.

Buzzer that makes you turn it off ?
Why not have the Arduino handle this by taking action in case of overheating, it's available right there.
Have a look at "blink without delay".
Did you connect the grounds ?
Je kunt hier ook in het Nederlands terecht: http://arduino.cc/forum/index.php/board,77.0.html

MAS3

Are those sidepods functional ?
Very unlikely.
If the body is metal, you can use that for heat dissipation.
But if you connect it directly, then you have GND on the body of your car and need to remind that.
Have a look at "blink without delay".
Did you connect the grounds ?
Je kunt hier ook in het Nederlands terecht: http://arduino.cc/forum/index.php/board,77.0.html

firashelou


These 4 pins are both GND and heat sink, not either one.
Use all 4 to have a more efficient path to get rid of heat.

Buzzer that makes you turn it off ?
Why not have the Arduino handle this by taking action in case of overheating, it's available right there.


so i connect the 4 pins to GND that's an idea
and about the buzzer, what i mean here is that the buzzer will give you a signal so you know that you must be carefull
and maybe i can put a display that will give me the temperature of the chip captured by the sensor
Aiming for the unreachable !

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