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Sort of switching regulator with AVR + MOSFET...
I can't find a switching regulator rated to at least 4A in the local electronics shops and really can't be forced to order one from abroad. In fact, what I need is very simple, a...
Thu. Jul 2, 2009 - 10:49 AM
10W or 20W LED driver, any circuits or suppliers?
I'm thinking about making one or two lights for underwater photography using 10 or 20W LEDs. I'm thinking about 500 to 1000 lumens of ouput should be plenty enough, more and I'll...
Thu. May 21, 2009 - 07:56 AM
Strobe (flash) and photo camera connection.
Anyone has some experience with this? I would like to add one or more external strobes to my underwater camera and I was thinking that rather than drilling holes in the watertight...
Fri. May 8, 2009 - 11:19 AM
#define PIN_B ((PINB>>1)&1) Why on Earth like that
I was looking for information about using rotary encoders and found this page that details a couple methods with code. The first one actually works, but I'm baffled by the way the...
Tue. Feb 17, 2009 - 02:37 AM
Substraction of two numbers always positive, best way?
I'm fiddling with some code that need to find the difference between two values (A and B), let's call it Δ (delta). Easy enough that's just substracting one number to the other,...
Thu. Feb 12, 2009 - 02:07 AM
New Mega48 needs ext crystal to program?
I tried to program an ATMega48 for the first time, tqfp package soldered to a breakout board. Didn't work, all programming connections seem to be correct, no shorts, all VCCs and...
Thu. Jan 15, 2009 - 02:15 AM
Interrupt capture on 2313, measuring pulse width.
I want to make a switch to turn on the navigation lights of my parkflyer planes, so I thought of tapping into the signal of the rudder servo and having a circuit that will toggle...
Fri. Dec 19, 2008 - 04:43 PM
USB to Serial with FT232, is it really this simple?
I want to start sending commands to AVRs via the USB port*, so I bought the FT232 chip and looking around for a suitable schematic I found this at the Sparkfun website: http://www...
Tue. Dec 16, 2008 - 12:01 PM
My first AVR *practical* gadget!
I set out, months ago to learn microcontroller programming, to keep me focused I chose something that I could actually use and share, so here is it: the BirdBrain Mk1. :lol:...
Wed. Oct 29, 2008 - 08:40 AM
Anyone has experience with photoresistive dry films?
Howdy Freaks. Last week I bought a roll of this stuff, a photoresistive film for PCB making. It looks nice enough, I peel one side, apply it to the PCB, iron it good and thorough...
Sun. Oct 5, 2008 - 03:12 PM
I´m looking for thin PCB
I´m trying to find where to buy thin PCB material, 0.5mm thick or less. I´ve already found some on Ebay but they only ship to the US... :( I´m looking for some place that would...
Fri. Sep 26, 2008 - 03:35 PM
Stalled motor code, is this right?
I'm trying to put a stalled motor function in my code for a battery operated thingy, I came up with something like this: void StallTest() { Volt2 = ADCH; if(Volt1 - Volt2 >=...
Wed. Sep 24, 2008 - 04:26 PM

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