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AVR ADC prescaler and ADC clock frequency.
Can somebody tell me a clear explanation of ADC clock frequency for 10-bit operation? What are its functions in the analog to digital conversion ? How to choose a proper clock...
Sun. Mar 3, 2013 - 09:56 AM
Need Help: Problem with my dimmer + stepper motor
I've built a system to dim three lamps (AC) and control three stepper motors. What I want to do is like: If ldr...
Thu. Feb 7, 2013 - 03:35 PM
Need Help: 4 wires bipolar stepper motor
I need references or tutorials (programming in C) to drive some bipolar stepper motors using AVR. The motors are 4 wires (black, brown, orange, yellow) PM42S096 and the driver are...
Wed. Jan 30, 2013 - 10:03 AM
Need help with AVR external interrupt0
I'm using external interrupt to make three blinking LEDs with different delay. The idea is when interrupt occurs, then all LED will start blinking at the same time but with...
Thu. Jan 10, 2013 - 05:40 AM
Help! Problem with triac firing control.
I build a dimmer using phase firing control and the result is in picture below. I use AVR GCC to compile this code: #define F_CPU 12000000UL #include #include #include void...
Wed. Dec 19, 2012 - 09:01 PM
Help!! Inaccurate delay_ms(1000); in ATmega8535
Why I can't get a precise or real time delay by just using delay_ms() function? I need it to set a firing angle delay with an interval of 0-10 ms only. If the error is too big,...
Wed. Dec 19, 2012 - 06:42 AM
Triac Firing Angle for dimming AC Lamp
Hi, I want to build AC lamp dimmer circuit using ATmega8535. I've build the zero crossing circuit but now I have a problem with Triac firing angle. The complete circuit is shown...
Sun. Dec 2, 2012 - 03:44 PM