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Problems with a transistor
Poincare wrote:I don't have 12V to hook it up to! Should I just hook it up to the 4.86V power supply? YOu asked how you can make it louder. It wont be any louder if you just...
Sunday, 28 June 2009 - 23:28
Problems with a transistor
Poincare wrote:Okay, I have one last question. Does PD3 output positive voltage? Mr. Heller says otherwise and I don't really understand why. Read the chapters about diodes and...
Sunday, 28 June 2009 - 23:24
Multiplex several switches on one external interrupt
yoran.be wrote:I have a limited amount of external interrupt pins on the ATmega8, I want to connect all of them (5 switches) to only one external interrupt pin. Easiest to just...
Sunday, 28 June 2009 - 23:20
Problems with a transistor
ArnoldB wrote:Poincare wrote:I have been having lots of trouble with transistors since the last few weeks and I still don't understand them it seems... http://openbookproject.net...
Sunday, 28 June 2009 - 21:58
Problems with a transistor
Poincare wrote:What is the UM66 thing? ... Oh yeah, its a small buzzer, takes 3-13. Don't know what UM66 is but it's irrelevant here, you are missing the point. This was just an...
Sunday, 28 June 2009 - 21:27
Design contest from Atmel+Arrow
angelu wrote:Oh, I think they need to include something else in the order, in order to be able to give the discount. Policy. No that's definitely not the reason. They did not...
Sunday, 28 June 2009 - 20:59
Design contest from Atmel+Arrow
After looking at my commercial invoice from Arrow I think they have just screwed up the description text - again! I just had a look at the STK600 description text at my invoice...
Sunday, 28 June 2009 - 20:26
Design contest from Atmel+Arrow
angelu wrote: I was in a hurry yesterday to buy one and went to this page http://www.arrownac.com/manufact... and click on the bottom of the page on ATSTK600 - PROMO link. In the...
Sunday, 28 June 2009 - 20:15
Problems with a transistor
Bothj of your schematics are wrong. You need to connct the speaker somethinglike this: But what kind of speaker so you use? Is it a buzzer or a real speaker? Please name the...
Sunday, 28 June 2009 - 20:07
send sms with AVR and without PC
The cheapest option for a one off hobby project is to use some old GSM phone as GSM modem for the AVR. Here's a project using an old Ericsson GSM phone and an AVR http://www....
Sunday, 28 June 2009 - 18:44
yet another programmer problem
RES wrote:Poincare wrote:I had a working programmer breadboarded and I decided to put it on a board with the holes with copper around it (I don't know what they're called, like...
Sunday, 28 June 2009 - 18:35
ATtiny85 + 100 ohm resistor = RFID tag?
From the AVR-GCC source code: http://svn.navi.cx/misc/trunk/av... http://svn.navi.cx/misc/trunk/av... /* * Software-only implementation of a passive low-frequency RFID tag, *...
Sunday, 28 June 2009 - 11:09

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