Type in the full discussion title or a part of it.
Discussion Title Created date
have some problems on the attiny13a program
I want to use the ATtiny13 to output the PWM wave and control the brightness of LED light. I write the program as below. I found some problems when I burn the .hex file into the...
Thursday, 2 February 2012 - 13:58
Is this circuit safe and can work normal
I find a very simple electric circuit which can dirve 50 LEDs at once. The current maybe is 20mA. I don't very clear. The 50 LEDs can work well. I don't know this circuit is safe...
Thursday, 29 December 2011 - 13:26
curious about the dimmable LED lamp (philips 14Watt)
I always conside that the high voltage(120V AC) can't change the brightness of LED lamp. But I wrong, some kinds of LED lamp can change the brightness of LED lamp by a controller...
Monday, 19 December 2011 - 15:26
a problem about the PT2272 module
I want to use the PT2272 module(PC-RH7A) and the ATmega8 IC to control the bright of LED lights step by step. I have finished the code of AVR. But I find some problem about the...
Thursday, 15 December 2011 - 02:20
some problems about the DS90C385A
I wanted to transmit the TTL signal into the LVDS signal. I selected the DS90C385A IC. But I encounter some problems as below: 1. R_FB pin(LVTTL level programmable strobe select...
Thursday, 10 June 2010 - 03:56
A problem about the AD9883A chip
Hi, I encountered a problem about the settings of the AD9883A. I used a PCB board which contained the main chips of FPGA EP1C3,AD9883A, ADV7123. My plan is that the VGA signal (...
Monday, 19 April 2010 - 14:22
a problem about the ADC change of ATmega16
Hi: These days I am reading some datasheets. I found some words in the ATmega16 datasheet. It said as below: Quote: Digital circuitry inside and outside the device generates EMI...
Tuesday, 9 March 2010 - 08:37
a module of controlling the high power RGB light with mega16
The picture is below: In recent weeks, I planed to design a circuit which could control the high power RGB light and changed the RGB color in my mind (temperature, color and so on...
Saturday, 2 January 2010 - 07:49
a problem about USART of ATmega16L
below is the program: When I sent a data of 0x12 to the ATmega16L via the RS232, the result of num in the main() is 0x00, not the value of 0x12. What was the reason? #include #...
Thursday, 24 December 2009 - 07:04
How to design a circuit without a transformer
I want to design a circuit. The circuit doesn't have the transformer. Can you geive me some advance? (some circuit pictures in the internet web) Thank for your attention....
Saturday, 19 December 2009 - 10:02
a problem about carrying the average voltage of half sine
The problem is that I want to carry the average voltage of the half sine wave. Use the ATmega16L to carry the voltage. How I can carry the value just like the voltmeter value?...
Wednesday, 16 December 2009 - 03:13
a problem about constant current circuit
I want to design a circuit that using the main IC ATmega16L, TLV5618 ,TL082 to complete the function of controlling the current of circuit at any range. Use the A/D(ATmega16L), D/...
Thursday, 10 December 2009 - 10:58

Pages