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Multiple resets on arduino when plug into USB
I use arduino boards, but program them in C in AS7. Very simple code     // debug led on D13 (PB5)     DDRB |= _BV(5);     PORTB |=_BV...
Sun. Dec 3, 2017 - 09:24 PM
Is my Atmega1284P on Melzi board dead?
Hello!   I have a 3d printer with melzi 2 clone board with atmega 1284P Schematic http://reprap.org/mediawiki/imag...   I just had a short circuit on Z-STOP and after...
Sat. Dec 2, 2017 - 09:52 PM
Dual powering arduino. Possible problem?
I looked at the powering schematic for arduinoi nano. Docs say that if i need to use external power i must connect it to +5V pin which is used as +5V output pin when powering from...
Thu. Nov 30, 2017 - 08:25 AM
How to really make one click device programming in AS 7?
I am working with arduino boards (nano 3.0) but program them via AVSIPmkII clone (ZeptoProg v1). Programmer works fine, i can go to device programming and flash the .elf file But...
Fri. Oct 20, 2017 - 02:38 PM
Lost in QMatrix , AVR32 power evaluation and 128K sram
Hello! I am choosing a MCU for a project. This is a potentially commercial project, so i need to think about cost optimization. The basic requirements are to have a touch pad and...
Thu. Jan 23, 2014 - 03:32 PM
Need help with AT90PWM and DALI
Hello! I want to create a DALI slave for the OSRAM DALI control gear i already have. Fro the datasheet of AT90PWM (which has DALI mode) i don't understand what extra components...
Tue. Jun 26, 2012 - 07:14 PM
Controlling many RGB leds with per channel/per led PWM
I have a project where i need to driver 4 sets of RGB leds (each set is 2 RGB leds). Each set must have per color PWM control, so, totally i need to control 3x4=12 color channel....
Wed. Mar 30, 2011 - 05:22 AM
Y/X EMI caps and a case for a DIY power supply
I am planning to build a simple and reliable power supply for a projetc with MCU (atmega88), tons of RGB leds (20mA), IR receiver, FETs and stuff. The input is 220V/50Hz mains...
Wed. Mar 16, 2011 - 11:54 AM
Need help with a compact power source for a project
Hello! I am planning a project on atmega44a (because of lower power and built in T sensor) and several leds which will be smoothly faded when needed. The leds: 1 RGB flux led...
Fri. Jun 4, 2010 - 07:11 AM
Need help reducing output voltage ripple from MAX762
I have done a very simple schematic to get approx 15V from MAX762 from 2 NiMH AA rechargables. The schematic is like this: Currently i've done it on a bread boards and used 150uH...
Sat. May 15, 2010 - 09:01 AM
Why simple op amp low pass filter does not work?
I am learning op amps and need to build a low pass filter to do DAC conversion from PWM output from atmega. I have tried 3 filters and none worked at all! I use an LM358P op amp...
Wed. Mar 4, 2009 - 07:13 PM
How this this diode scheme works?
I am reading "The Art of Electronic" and got stuck at understanding basic diode schemes. Here is the figure: I don't understand how this works. They have put the diode the other...
Sun. Jan 18, 2009 - 03:59 PM

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