Post Created date
Any pointers for bitbang ASK demodulation ?
So let me see if I understand. You are going to write drivers for your PC to : a)take serial data from some source in your PC b)control the sound card to send audio frequency...
Monday, 2 January 2012 - 22:10
bootloader faq and eeprom wear
There are many ways to signal the bootloader to run the application code. I've never used an EEPROM value as a signal. I don't know what your intentions are, but here is a method...
Monday, 2 January 2012 - 04:01
Why debugging does NOT work
I noticed from your video that BOD is still disabled. I would HIGHLY recommend that you enable BOD in your fuse settings, and set the Brown Out detection level appropriately for...
Monday, 26 December 2011 - 13:57
Why debugging does NOT work
While the datasheet says that a pull-up resistor is not required, the internal pull-up in the M48 on the reset line can range from 30K to 60K. I worry that this may be a little "...
Wednesday, 21 December 2011 - 15:52
Why debugging does NOT work
Quote:But what is meant here by "clear". There is NO resistor, NO cappacitor on reset line. Only direct connection from pin1 of ATMega48 to pin 5 of ISP.Nothing else. Must I...
Wednesday, 21 December 2011 - 14:33
Locked out of ISP and DW
There is a flaw in AVRs where the part can become "bricked" transitioning back and forth between DW and SPI. Some people have never seen it at all, and refuse to admit that it...
Friday, 25 November 2011 - 14:15
SPI issue with Cortex M3/Atmel644PA
Make sure that your SPI clock polarity and phase match on the transmitter and receiver. If you have a scope, you should check the transmitter to make sure it matches what you...
Friday, 25 November 2011 - 13:53
Measuring Capacitance
I have to agree with Jayjay. It would probably be a lot easier for you to use the variable capacitance of the humidity sensor to control an oscillator, then measure the variable...
Sunday, 23 October 2011 - 13:06
ADC Conversion Fails
So you are "betting the farm", so to speak, on a single A/D conversion performed once a day on product you have in production ? Does that really sound like a good idea ? You will...
Wednesday, 31 August 2011 - 00:52
Need advice on trimming some "fat", improve speed
It sounds like your packet sizes are large, so saving a few bytes by not including the "time" in your packet may not benefit you very much. But here is something for your...
Tuesday, 30 August 2011 - 18:23
Need advice on trimming some "fat", improve speed
Why wouldn't you let the scoreboard keep the time locally, and only update the time over your network "occasonally". This would be more typical of a time keeping function where a...
Monday, 22 August 2011 - 01:30
flowcharting
Although it's not free, Microsoft Visio is an excellent tool for creating flowcharts, state diagrams, timing diagrams, and just about any other type of documentation you might...
Wednesday, 1 June 2011 - 00:00

Pages