[Microbit-Python] Testing Point Documentation

[Andrew Ferguson 500]

Hi Nicholas,

Ah, my micro:bit does not have a tick, so that's probably the problem.

Is there any more info anywhere about this overheating problem? (how it occurs, what can be done to avoid it, etc...).

On 4 Apr 2016, at 15:22, "Nicholas H.Tollervey" <ntoll at ntoll.org> wrote:

> If it has a tick mark on the front, top left corner (where the "hair"
> is), then I believe it's been checked for the overheating problem and
> passed. No tick = likely to be an earlier pre-solution version of the board.
> 
> N.
> 
> On 04/04/16 15:24, Andrew Ferguson 500 wrote:
>> Thanks, it does get quite hot if left on for more than ~30 seconds.
>> (After about 10 it is too hot to touch, after 20 it is very warm on
>> the other side of the board. I haven't left it on for more than about
>> 2-3 minutes).
>> 
>> This was one of the teacher devices so it could be a slightly earlier
>> version than the final student devices.
>> 
>> On 4 Apr 2016, at 15:13, Damien George <damien.p.george at gmail.com>
>> wrote:
>> 
>>> There was a problem with some of the microbit's having their USB
>>> chip get "hot" but I thought it was resolved.  I'll ask Jonny about
>>> it.
>>> 
>>> On Mon, Apr 4, 2016 at 2:44 PM, Andrew Ferguson 500 
>>> <andrewferguson500 at gmail.com> wrote:
>>>> No, the computer does not recognise the micro:bit. If I power the
>>>> micro:bit from the 2x AAA batteries nothing happens at all. (No
>>>> light, no chips getting hot).
>>>> 
>>>> Hopefully more stuff will be released as Free Software / open
>>>> source soon (especially the DAL and the iOS and Android apps).
>>>> 
>>>> 
>>>> On 4 Apr 2016, at 14:35, "Carlos P.A." <carlos.p.a.87 at gmail.com>
>>>> wrote:
>>>> 
>>>> I haven't seen any schematics out yet, that seems to be part of
>>>> the documentation that still needs to be open sourced. From the
>>>> top of my head I vaguely remember the test points at the back
>>>> probably connected to the microcontroller in charge of the USB
>>>> communication (and, I assume, the battery controller), so they
>>>> might be a programming interface more than actual test points.
>>>> 
>>>> Does you computer recognise the microbit at all?
>>>> 
>>>> On 4 April 2016 at 14:27, Andrew Ferguson 500
>>>> <andrewferguson500 at gmail.com> wrote:
>>>>> 
>>>>> Hi,
>>>>> 
>>>>> I managed to persuade my teacher to let me borrow a teacher
>>>>> Micro:bit over the Easter holidays (I'm in Scotland so the
>>>>> student devices haven't arrived yet), but unfortunately I seem
>>>>> to have broken it. (I was just using 'screen' to test serial
>>>>> communication, one minute it worked and the next the screen 
>>>>> session had closed, the micro:bit status light was off and the
>>>>> USB chip on the micro:bit got very hot).
>>>>> 
>>>>> I suspect it's probably irreversibly broken, but I noticed that
>>>>> on the back of the micro:bit there are several testing points
>>>>> that may provide some insight as to what went wrong if probed
>>>>> with a multimeter. Does anyone know if there are any docs
>>>>> relating to which testing point links to what?
>>>>> 
>>>>> Thanks, Andrew
>>>>> 
>>>>> 
>>>>> _______________________________________________ Microbit
>>>>> mailing list Microbit at python.org 
>>>>> https://mail.python.org/mailman/listinfo/microbit
>>>> 
>>>> 
>>>> _______________________________________________ Microbit mailing
>>>> list Microbit at python.org 
>>>> https://mail.python.org/mailman/listinfo/microbit
>>>> 
>>>> 
>>>> _______________________________________________ Microbit mailing
>>>> list Microbit at python.org 
>>>> https://mail.python.org/mailman/listinfo/microbit
>>>> 
>>> _______________________________________________ Microbit mailing
>>> list Microbit at python.org 
>>> https://mail.python.org/mailman/listinfo/microbit
>> _______________________________________________ Microbit mailing
>> list Microbit at python.org 
>> https://mail.python.org/mailman/listinfo/microbit
>> 
> 
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit