[OpenTRV-interest] Power to OpenTRV boards

[Damon Hart-Davis]

Hi,

Your boards are REV2 (cut4) boards which believe themselves to be Arduino boards and that can be programmed via the Arduino IDE.  This whole class of boards is known as the V0p2 (V0.2) hardware design strand.

Many/most of the data format issues will be common across the REV1 and REV2 versions of that V0p2 strand, plus the REV4 that I am playing with that has a relative-humidity sensor, plus the REV7 board that is going through production engineering now.  As far as possible they behave the same within the constraints of the slightly different hardware arrangements.

So maybe make a clear V0p2 Data section and describe all this serial I/O, data format and CLI stuff in there.

I will give you edit permissions shortly (I don’t have my SF password to hand at this moment).

Thanks!

Damon



On 10 Nov 2014, at 22:01, Alasdair Macdonald <EMAIL ADDRESS HIDDEN> wrote:

> Here's another thing that I don't understand:
> 
> The wiki page that describes how to interact with the board is titled "Arduino":
> 
> https://sourceforge.net/p/opentrv/wiki/Arduino/
> 
> Does this page relate to a family of boards / breadboards /
> prototypes, of which my "tinkering kit" Rev2 boards are only one
> example?
> 
> This matters because I don't know how my board should be described in
> the wiki (as a subsection on the Arduino page?) or in a separate page
> / article?
> 
> 
> Profile is "flobalob" and I don't (yet) have appropriate edit permissions.
> 
> Can make the changes as soon as you advise and enact re the above.
> 
> 
> 
> On 10 November 2014 21:28, Damon Hart-Davis <EMAIL ADDRESS HIDDEN> wrote:
>> Hi,
>> 
>> Feel free!  Tell me if you need to be granted write access (and what your sf ID is).
>> 
>> Be especially clear that this is for REV2 boards in particular.
>> 
>> Rgds
>> 
>> Damon
>> 
>> On 10 Nov 2014, at 19:44, Alasdair Macdonald <EMAIL ADDRESS HIDDEN> wrote:
>> 
>>> Thanks for this.
>>> 
>>> Useful to add to the wiki, with minor reformatting / cut & paste?
>>> 
>>> I'm happy to do so ...
>>> 
>>> Alasdair
>>> 
>>> On 10 November 2014 18:08, Damon Hart-Davis <EMAIL ADDRESS HIDDEN> wrote:
>>>> 
>>>> On 10 Nov 2014, at 17:47, Alasdair Macdonald <EMAIL ADDRESS HIDDEN> wrote:
>>>> 
>>>>> Quick summary and some questions about the jumpers and power options.
>>>>> This is what I recall from our session the other evening:
>>>>> 
>>>>> 
>>>>> * To power from FTDI cable, use both jumpers
>>>> 
>>>> Correct.
>>>> 
>>>>> 
>>>>> * If ONLY the jumper that is closer to the middle of the board is ON
>>>>> (ie the one closer to the edge of the board is removed); then power
>>>>> can be supplied from the micro USB cable (whilst the FTDI cable
>>>>> remains connected, reading and writing data if necessary).
>>>> 
>>>> Yes.
>>>> 
>>>> 
>>>>> 
>>>>> Q1. In this case, is it OK to connect / disconnect the serial cable
>>>>> whilst the device remains powered? (ie for changing settings, or
>>>>> reading some data)
>>>>> 
>>>> 
>>>> Yes, but plugging in the FTDI cable should cause a restart.
>>>> 
>>>>> 
>>>>> * For battery power, remove BOTH jumpers.
>>>> 
>>>> Correct.
>>>> 
>>>>> 
>>>>> Q2. In this case, is it OK to connect / disconnect the serial cable
>>>>> whilst the device remains powered? (ie for changing settings, or
>>>>> reading some data)
>>>> 
>>>> Yes,  but not the point about reset.
>>>> 
>>>>> 
>>>>> 
>>>>> * Presumably jumpers should only be added / removed when there is NO
>>>>> power connected?
>>>> 
>>>> That would be wise.
>>>> 
>>>> Rgds
>>>> 
>>>> Damon
>>>> 
>>