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Discussion Title Created date
stepper motors. unipolar or bi-polar?
hi, is any big deal about uni-polar and bi-polar in stepper motors? which one is more simpler? the reason i'm asking is because i want to choose one to use. any clarification is...
Monday, 29 June 2009 - 07:19
stk500 not working.
i need some help. I've put aside my stk500 for four month. and now when i power it up the power LED doesn't lit. anyone to help out?
Friday, 1 May 2009 - 13:57
adaptive Cruise Control
does a microconroller have anything to do with Adaptive Cruise Control? or they implemented with something else?
Wednesday, 18 March 2009 - 12:04
LC-Dispaly problem
what resistor value should one use on a contrast adjust pin to make a clear display? i've connect 1K from the pin to ground but my display is not that visible. any idea?
Friday, 21 November 2008 - 07:56
Assembly question
why can't we move a number directly into I/O registers, but instead we have first to move them in to working registers(such as temp). i.e again, does that mean we can't move data...
Monday, 17 November 2008 - 13:58
phone and DTMF decoder
how does one connect a telephone line with a DTMF decoder(e.g CM8870). i.e which telephone wires(of the 2 pairs of wires in the telephone cable) to one connect to the 8870? again...
Friday, 31 October 2008 - 13:26
LEDS arrangement
i'll be having 2 groups of LEDS, red and green, about 20-30 in each group each group is making cluster and is driven by a transistor. I neeed to make a PCB for this circuit...
Wednesday, 29 October 2008 - 09:31
serial comms
can one use 4MHZ oscillator for serial(USART) communications and with what caps?
Monday, 27 October 2008 - 07:06
using a relay with LEDs
i need to drive a couple of LEDs (8 or 10 of em) using a relay form a uC pin. can someone suggest a circuit configuration/drawing. i have DIP05-1A72-12L from MEder Electronic.
Monday, 20 October 2008 - 08:17
does reset need a code?
hi guys! i need help i have connected a push button switch on a reset pin of my AVR and i don't know if what i see is normal and i want to know if i need to program my switch or...
Monday, 13 October 2008 - 11:04
help with Altium Designer
high guys can u help me here... by placing the components and routing or any suggestions.i don't think what i have done is the best as i'm only a newbie in PCB designs.i'm using...
Friday, 10 October 2008 - 14:14
need a relay
i need to connect a 24V lights to my AVR pins and actually that would need a relay or amplyfing device. I just need help on choosing a correct relay for this application.i will...
Thursday, 9 October 2008 - 10:30