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Is there need for a comprehensive RC servo tutorial?
Sounds like a good idea. Like Steve, I was unaware of the shift from PWM to PPM. PM me with your e-mail and I'll be happy to assist with editing. If nothing else happens I'll...
Monday, 27 October 2008 - 22:56
Low reference voltage for ATMega ADC - is it possible?
As Jim so correctly pointed out, there are noise sources that won't shrink with the reference. Worse, the ADC's performance is a function of VDD and VREF. According to the data...
Monday, 27 October 2008 - 22:51
ISP and DRAGON issue
By any chance is RESET not pulled up with a resistor?
Tuesday, 14 October 2008 - 20:13
Flash memory erase problem
A wrap up. No field failures as this pair of products is going into production. No other system anomalies have been reported and this was only found in the software lab, not in...
Wednesday, 1 October 2008 - 21:56
Flash memory erase problem
First, the erase problem is a "known issue" with Atmel. It seems that there is an unintended path into parallel programming - it doesn't always follow the rules. The good news...
Wednesday, 17 September 2008 - 17:39
Flash memory erase problem
The customer's test is one for the Journal of Irreproducable results. No instrumentation, just a tech cycling the AC switch as he feels like it and we have to live with it. And we...
Tuesday, 16 September 2008 - 20:58
Flash memory erase problem
Not exactly, the BOD WAS enabled. It wasn't able to help as it appears that the problem was over voltage hitting the reset pin. A high enough voltage there pops the uC into high...
Tuesday, 16 September 2008 - 19:01
Flash memory erase problem
The original circuitry had nothing attached to the RESET. Tieing to VDD didn't seem to help. A suggestion I made was to use a supervisory circuit to hold RESET low when VDD was...
Tuesday, 16 September 2008 - 18:33
Flash memory erase problem
No SPM during the customer's test. What we are seeing is a full on erase under internal micro-program control, not corruption. This has been reported to us by Atmel as having been...
Tuesday, 16 September 2008 - 16:45
Flash memory erase problem
The clock is the internal 8MHz clock, trimmed using Atmel's methods and hardware to be reasonably accurate. BOD is definitely enabled and this was verified. Even if the wrong BOD...
Tuesday, 16 September 2008 - 00:38
Flash memory erase problem
Not likely for various reasons, most of which I cannot go into in specific detail. We're pretty sure the problem is as described, just haven't found the smoking gun.
Monday, 15 September 2008 - 23:41
Connecting two AVRs using SPI - Why no resistors?
Half the fun in experimenting is letting some smoke out now and then. ;-)
Friday, 15 August 2008 - 21:57