Post Created date
pricing strategy?
Is this a school assignment? Or just a one off hobby project? Show us what you've done so far. Hardware and software. Humans have built rockets for decades, no need to reinvent...
Sun. May 6, 2012 - 02:02 PM
full duplex comunication with rs485
Quote:You can't do full duplex with RS-485 Why? Wikipedia disagree. http://en.wikipedia.org/wiki/Rs485
Sat. May 5, 2012 - 09:11 AM
Problem in accessing Memory Card through MicroSD Adapter
Don't really understand your questions regarding baudrate. Here's a couple of documents and a link that might help you to understand how SD cards work. http://elm-chan.org/docs/...
Fri. May 4, 2012 - 12:48 PM
Please help with keypad entry 4x3 matrix(IN ASM)
LOOP: in temp,PINB ldi temp,0b00001111 ; PB4..PB6=Null, pull-Up-resistors to input lines The first instruction is pointless since the second wipes out the value in temp.
Tue. May 1, 2012 - 06:02 PM
UART to UART between 2 uCs
Quote:So you keep sending "U" and adjust the baud rate from one end to the other, find the 2 baud rates on each end that are the limit to properly reading "U" and take the middle...
Fri. Apr 27, 2012 - 10:43 AM
UART to UART between 2 uCs
You can manage without a crystal if you are in control of both micros software which you seem to be. I have solved this by sending a "U" to the receiving micro which will measure...
Thu. Apr 26, 2012 - 09:35 PM
Trying to understand USART Baud
Most of the apps I've built run at 9600. I.e. many cellphones communicate at that rate as default. This does not mean that 0.2% of the data will be lost. You can safely get away...
Thu. Apr 26, 2012 - 08:55 PM
Trying to understand USART Baud
Quote:If error is 0.0% at 1M then wouldn't the faster error rate still be 0.0%? The error described in datasheet is not rate of error (how often a byte will be missed at receiving...
Thu. Apr 26, 2012 - 08:03 PM
Trying to understand USART Baud
Quote:Why would I NOT want to be operating at as fast a speed as possible? I assume there will something connected to the other end of UART cable? That something need to run at...
Thu. Apr 26, 2012 - 04:49 PM
Atmega8 with USB??
Knowing how far apart those motors are might exclude some of the options. And total expected length of wire. Also if the connections will be star-shape or serial.
Sat. Apr 21, 2012 - 03:05 PM
Servo control using potentiometer for ATMega32
Replacing the pot inside the servo with resistor network make the servo run "forever" chasing the right value of the pot now replaced with resistors to fake a mid point setting of...
Fri. Apr 20, 2012 - 09:28 AM
ADC sampling frequency vs. system clock problem
If you only need 8-bit resolution you can increase the ADC clock. I've used 1MHz for 8 bit with good results. OTOH I sample i.e. 8 or 16 times and average the result which...
Tue. Apr 17, 2012 - 08:03 PM

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