Author Topic: What the Hell is going on with my microcontroler.  (Read 3141 times)

0 Members and 1 Guest are viewing this topic.

Offline robotvisionaryTopic starter

  • Full Member
  • ***
  • Posts: 94
  • Helpful? 0
  • Lucky I wasn't that driver.
What the Hell is going on with my microcontroler.
« on: July 08, 2007, 11:40:35 PM »
When i start up my robot the microcontroler get vry hot and so is the battery.  :'(


HHHHEEEELLLLPPPP!!!!

Post any answer in her PLS.
I've have not failed, I've just found out 2,000 how a light bulb will not work

                              Thomas Edision.
[youtube]59xcT1dstq4[/youtube]

Offline KambeiX

  • Full Member
  • ***
  • Posts: 79
  • Helpful? 0
Re: What the Hell is going on with my microcontroler.
« Reply #1 on: July 08, 2007, 11:50:40 PM »
you connected it wrong and you fried the microcontroller so now  you are making a short circuit

It happens me now and then when I'm not careful and working in a breadboard :P


Offline robotvisionaryTopic starter

  • Full Member
  • ***
  • Posts: 94
  • Helpful? 0
  • Lucky I wasn't that driver.
Re: What the Hell is going on with my microcontroler.
« Reply #2 on: July 08, 2007, 11:52:42 PM »
How does the microcontroler be connected, Side, fron back etc. PLs Answer. :'(
I've have not failed, I've just found out 2,000 how a light bulb will not work

                              Thomas Edision.
[youtube]59xcT1dstq4[/youtube]

Offline robotvisionaryTopic starter

  • Full Member
  • ***
  • Posts: 94
  • Helpful? 0
  • Lucky I wasn't that driver.
Re: What the Hell is going on with my microcontroler.
« Reply #3 on: July 08, 2007, 11:54:24 PM »
Hey pls do not go intill i fix it it should take a minute or so.
I've have not failed, I've just found out 2,000 how a light bulb will not work

                              Thomas Edision.
[youtube]59xcT1dstq4[/youtube]

Offline KambeiX

  • Full Member
  • ***
  • Posts: 79
  • Helpful? 0
Re: What the Hell is going on with my microcontroler.
« Reply #4 on: July 08, 2007, 11:58:43 PM »
it depends on what microcontroller you are using

VDD = 5v (it depends but 5v is the most common)

and VSS= GND


Offline robotvisionaryTopic starter

  • Full Member
  • ***
  • Posts: 94
  • Helpful? 0
  • Lucky I wasn't that driver.
Re: What the Hell is going on with my microcontroler.
« Reply #5 on: July 08, 2007, 11:59:40 PM »
I am using the Atmega8 or the one in the $50 dollar robot.
I've have not failed, I've just found out 2,000 how a light bulb will not work

                              Thomas Edision.
[youtube]59xcT1dstq4[/youtube]

Offline KambeiX

  • Full Member
  • ***
  • Posts: 79
  • Helpful? 0
Re: What the Hell is going on with my microcontroler.
« Reply #6 on: July 09, 2007, 12:11:14 AM »
VCC should be pin 7 and GND pin 22
 
look at http://www.atmel.com/dyn/resources/prod_documents/2486S.pdf to see how pins are arranged

if you connected it backwards I think you fried the atmega.


You should also connect pin 20 to VCC and pin 8 to GND

« Last Edit: July 09, 2007, 12:13:12 AM by KambeiX »

Offline Eco19R

  • Full Member
  • ***
  • Posts: 104
  • Helpful? 0
Re: What the Hell is going on with my microcontroler.
« Reply #7 on: July 09, 2007, 02:33:18 AM »
I connected a PIC backwards once and it still seemed to work afterword

Offline suren

  • Jr. Member
  • **
  • Posts: 25
  • Helpful? 0
Re: What the Hell is going on with my microcontroler.
« Reply #8 on: July 09, 2007, 08:02:30 AM »
Check all the connections..they must be coorect..check with the data sheet..
Use proper grounding..
Use a additional heat sink if possible..

Offline Brandon121233

  • Contest Winner
  • Supreme Robot
  • ****
  • Posts: 320
  • Helpful? 0
  • "Genius is %1 inspiration and %99 perspiration"
Re: What the Hell is going on with my microcontroler.
« Reply #9 on: July 09, 2007, 04:47:02 PM »
NO! no heatsink is necessary, in fact any heat at all is not a good sign for a MCU, maybe you fried it maybe you didn't but heat in general is a bad sign for MCU's (there might be 1 or two exceptions but for the Atmega8... heat is bad)
Hell, there are no rules here—we're
   trying to accomplish something.

                                                                              —Thomas Edison

Offline robotvisionaryTopic starter

  • Full Member
  • ***
  • Posts: 94
  • Helpful? 0
  • Lucky I wasn't that driver.
Re: What the Hell is going on with my microcontroler.
« Reply #10 on: July 09, 2007, 10:05:59 PM »
I took everything out and now i am going to do it in a breadboard that i bought that doesn't allow short circuits. Can somebody pls send me some instructions on hoe to use a breadboard and i also bought a Sharp IR sensor that reches from a minimum of 8" to a maximum of 150". Is that right or i am wrong, should the automatic calibration program still work.

PLS ANSWER ME PLS. :'( :'( :'(
I've have not failed, I've just found out 2,000 how a light bulb will not work

                              Thomas Edision.
[youtube]59xcT1dstq4[/youtube]

Offline robotvisionaryTopic starter

  • Full Member
  • ***
  • Posts: 94
  • Helpful? 0
  • Lucky I wasn't that driver.
Question on microcontrolers.
« Reply #11 on: July 11, 2007, 05:50:09 AM »
Hey i am doing the $50 dollar robot I have just finish again the circuitry. I have a question on the Atmega8. Is it normal to get a little bit warm.
I've have not failed, I've just found out 2,000 how a light bulb will not work

                              Thomas Edision.
[youtube]59xcT1dstq4[/youtube]

Offline KambeiX

  • Full Member
  • ***
  • Posts: 79
  • Helpful? 0
Re: Question on microcontrolers.
« Reply #12 on: July 11, 2007, 08:27:12 AM »
if it's working then it's ok.

But getting warm means high current. If you have outputs driving leds or other devices make sure they have appropiate resistors or you will force the microcontroller to give higher current than it's needed.

Offline Admin

  • Administrator
  • Supreme Robot
  • *****
  • Posts: 11,658
  • Helpful? 169
    • Society of Robots
Re: Question on microcontrolers.
« Reply #13 on: July 11, 2007, 05:50:16 PM »
Quote
Is it normal to get a little bit warm.
Congratulations on getting it to work . . . but it is NOT ok for it to be warm. Something is plugged in wrong, and/or wires are shorting somewhere. Get out a multimeter and do resistance checks on everything after you double checked the wiring.

Offline robotvisionaryTopic starter

  • Full Member
  • ***
  • Posts: 94
  • Helpful? 0
  • Lucky I wasn't that driver.
Re: What the Hell is going on with my microcontroler.
« Reply #14 on: July 12, 2007, 06:29:45 AM »
OK I check everything i  plug it in and it didnot got warm. I think it was body heat. Although you didnot answer me the question on the sharp IR sensor. PLS ANSWER.
I've have not failed, I've just found out 2,000 how a light bulb will not work

                              Thomas Edision.
[youtube]59xcT1dstq4[/youtube]

 


Get Your Ad Here

data_list