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PWM with atmega..
Leave it to the OP to blow up a beautiful theoretical discussion. There are lots who understand the problems involved in driving motors via H-bridges far better than I do. Sketch...
Monday, 12 November 2007 - 22:09
PWM with atmega..
Sorry Klaus, if I misunderstood. Your statement reads to me as though you want the CPU to count PWM pulses. That soaks up CPU time resource. Perhaps that wasn't what you were...
Monday, 12 November 2007 - 18:41
Dragon Dead on Arrival and missing a tail!
Most of the ICs on the Dragon have ESD protection built in and is quite good, but NOT PROOF against damage. The Dragon's circuitry is "hanging out in the wind", a terribly...
Monday, 12 November 2007 - 06:38
PWM with atmega..
The OP didn't specify what other hardware resources were committed, especially the Tn pins. So, I suggest an almost pure hardware solution. Set up an 8 bit counter to do the PWM...
Monday, 12 November 2007 - 06:01
UART slower
Without the URSEL bit in writing to UCSRC, the code was actually writing a large divisor chunk into UBRRH instead of setting transmission parameters in UCSRC. Hence the really low...
Saturday, 10 November 2007 - 07:06
Dragon Bane
Similar experience. We were told the power supply was burning up the boards. Some error on the supplier's part. In any event they expected to see the new boards today (SJ seminar...
Thursday, 11 October 2007 - 01:37
Dragon Bane
I spoke with the Apps Engineers at the Pico Power seminar in San Jose today. Atmel doesn't want to put any money into supporting Dragon documentation for the public. The design is...
Wednesday, 10 October 2007 - 22:14
Return array from function
AVRs are typically limited in stack space. Passing large chunks of data on the stack isn't a good idea. As Bob pointed out, it is better to allocate an array that both main and...
Wednesday, 10 October 2007 - 21:47
Is the Dragon really that bad?
The Dragon looks like an engineer's hack that got put out as a product as is to cut costs. If you don't blow it from an incompatible USB port or carelessness it is a fine tool....
Wednesday, 3 October 2007 - 01:18
Dragon Bane
I suspect that the Dragon was developed outside Atmel by someone who doesn't want to give up what for them is a profitable little market. In any event we don't seem likely to be...
Tuesday, 2 October 2007 - 23:51
Dragon Bane
Did you notice that the USB interface uses a Philips USB chip instead of Atmel's own? ____________ In theory, there is no differenc between theory and practice. In practice...
Tuesday, 2 October 2007 - 20:21
Dragon Bane
Wikipedia has the same information. Some PCs have been designed with the knowledge of the heavy duty loads in mind. Rather than bothering with the hardware to monitor load...
Tuesday, 2 October 2007 - 17:32

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