[OpenTRV-dev] Schematic is good

[Damon Hart-Davis]

Hi,

Went straight for 4800 baud (a) to match the PICAXE default that I had been using and (b) because I'd seen some reports of problems at 9600 baud with a 1MHz CPU clock and (c) because I think it's plenty fast enough.  The guy who built the bootloader for me also made a 9600 baud version, see: 

http://arduino.cc/forum/index.php/topic,160647.msg1204176.html

You'll be asking me to move up from my Teletype to one of those new-fangled dot-matrix printers next.  B^>

Rgds

Damon



On 17 May 2013, at 16:48, Stuart Poulton wrote:

> Damon,
> 
> Many thanks. Very useful.
> 
> How are you finding reliability at 4k8 ? Is 9k6 not stable ?
> 
> Stuart
> 
> On 17 May 2013, at 12:49, Damon Hart-Davis wrote:
> 
>> Optiboot (512 bytes), 4800 baud (to match what I was doing with the PICAXE so a common CLI front end will work with both).
>> 
>> http://www.earth.org.uk/OpenTRV/Arduino/bootloader/ATmega328P-1MHz/README.txt
>> 
>> http://www.earth.org.uk/OpenTRV/Arduino/bootloader/ATmega328P-1MHz/boards.txt
>> 
>> http://www.earth.org.uk/OpenTRV/Arduino/bootloader/ATmega328P-1MHz/atmega328_1b.hex
>> 
>> http://www.earth.org.uk/OpenTRV/Arduino/bootloader/ATmega328P-1MHz/BlinkPower.ino
>> 
>> Rgds
>> 
>> Damon
>> 
>> 
>> On 17 May 2013, at 12:43, Stuart Poulton wrote:
>> 
>>> Forgot to ask, is that still working with an arduino bootloader, if so at what baud rate ?
>>> 
>>> Thanks
>>> 
>>> Stuart
>>> 
>>> 
>>> On 17 May 2013, at 12:39, Stuart Poulton wrote:
>>> 
>>>> Damon,
>>>> 
>>>> Looks good, out of interest (following on from you tweet)
>>>> 
>>>> "Good slides! BTW, I have ATmega328P down to 1.3uA@~2.4V (2xNiMH AA cells) running software RTC, EMAIL ADDRESS HIDDEN from int 8MHz RC."
>>>> 
>>>> Can we take a peak at the code ?
>>>> 
>>>> Stuart
>>> 
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>> 
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