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Do I need to consider something special for circuit i put on car?
Hi! As title says is there some special design considerations for electronics installed in car?   I need something to turn on the amplifiers with little delay since my line...
Mon. Oct 9, 2017 - 02:37 AM
Interrupt driven slave SPI
Hey, i'm bit uncertain about this as i have never done interrupt driven SPI with AVR's.   Is this interrupt handler about right? ISR(SPI_vect){ //Check if buffer got free...
Tue. Aug 29, 2017 - 04:00 PM
Measuring mains powered devices with usb scope, some questions.
Hi! I have some doubts about this and rather ask before i do anything that is potentially dangerous to me or my equipments. Is it safe to ie. measure phone charger output with usb...
Thu. Aug 24, 2017 - 06:39 PM
WS2812B leds combined with serial coms
Good evening!   I got to wonder how people do this? the led's have pretty tight timings and interrupts kinda screw it over.   i was thinking something like this: PC...
Tue. Aug 22, 2017 - 06:25 PM
Elecrow offering 5 pieces 10x10cm PCB's for 4.90$ now!
Just wanted to let people know if you are looking at making prototypes or whatever. I have been very pleased with them in past when the price was double of this, sure it's not...
Thu. May 25, 2017 - 12:27 PM
"Arduino" autoreset circuit
Hey! I've been fighting to get this to work on selfmade PCB for quite some time, now I have to ask for some assistance.   So I have basically the same circuit. Ftdi RTS -...
Mon. Mar 27, 2017 - 09:15 PM
Accidentally swapped 5v and 12v on PCB, what did I fry?
Hi, small accident happened and avr did catch little fire.   What I'm wondering did I fry anything else in the process for sure? All the other components should be rated...
Tue. Mar 7, 2017 - 01:14 PM
atmega328pb optiboot
Hey!   so i stepped upon an issue that Optiboot doesn't(?) support UART1, on atmega328pb or im just doing something wrong.  This is the output of AS7, when trying to...
Sun. Feb 19, 2017 - 07:22 PM
transistor switch to "re-route" pwm signal
(maybe not the best title, I wasn't able to figure better thought) Hey once again.   i was doing experiement with transistors to see if im able to use one hardware PWM to...
Sun. Feb 12, 2017 - 08:09 PM
How to safely power up stuff from PC PSU 5v line?
Hey!   I did some tinkering with ws2812b based led strip but weird things started to happen on PC USB ports*** when drawing the power from PSU which should be able to deliver...
Fri. Feb 10, 2017 - 04:51 AM
Local struct with member pointing to global struct?
For a backround this proplem did come up since i wanted to stop using globals which i dont need, i think i should have abandoned that bad habit long time ago allready.  ...
Tue. Jan 31, 2017 - 04:35 PM
Fan control prototype, unsure of some parts of the circuit.
Hi, i was earlier asking about the atmega to do the job, did decide to go 328PB because of fair amount HW pwm's. today had some time to draw "final" schematic and almost routed...
Wed. Jan 18, 2017 - 09:37 PM

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