[PD] Sensors GPIO Raspberry Pi Pd

Julian Brooks jbeezez at gmail.com
Mon Jun 3 12:11:10 CEST 2013

Hey Ivica,

All the info is on this thread:

The object is [gpio] and whilst working fine, is pretty basic.  Jaime's
helpfile is very useful and recommended.

OAN - Had a quick look at your site for the RPI version of pd-l2ork -
really excellent documentation, looks great, hats off to you.

Should have more time next month to properly engage with pd-l2ork - looking
forward to it.


On 3 June 2013 05:42, Ivica Bukvic <ico at vt.edu> wrote:

> Joining late to the discussion--is there now a native Pd external that
> allows direct connection to RPi pins or is there still a need to use
> middleware to access the data steam? If former, where can one get their
> hands on the source--I would love to include it in the next pd-l2ork RPi
> release?
> Please advise.
> On May 23, 2013 8:20 AM, "Julian Brooks" <jbeezez at gmail.com> wrote:
>> Just checked it again and noticeably in comparison to all our previous
>> testing there is now (as good as) zero errors from the sensors.  Rock
>> solid.  Joy.
>> On 23 May 2013 13:16, Julian Brooks <jbeezez at gmail.com> wrote:
>>> Hey Martin,
>>> Many thanks for the extra wiring diagram.
>>> We managed to confirm both sensors are working via pin11 from the IC
>>> going between earth & 3v with gpio17 disconnected and running i2cdetect.
>>> That was really useful as it was the first definite confirmation that
>>> both sensors are working correctly.
>>> In the process of doing that we also discovered that the line from
>>> gpio17 to IC pin11 was in fact not connected to gpio17 at all!
>>> To try and keep the protoplate reasonably tidy we'd soldered to the
>>> underneath of the plate.  Somehow in the flipping from one side to the
>>> other we'd messed up and missed by two connecting it to ground and
>>> therefore making complete sense as to why only one sensor was working.
>>> This is also after spending a half hour this morning checking and double
>>> checking all the various lines and connections.
>>> So working now - blimey.
>>> OAN - Whilst wanting to progress the Pd patch last night, having left it
>>> since last Friday, I plugged the box with all our gubbins in and promptly
>>> blew up the Pi - proper fried it it seems.  Loose power cable to the Pi and
>>> we think it was touching a screw on the box.  Kapput.
>>> The RPi was a rev1 board and my other is rev2 and the custom image I
>>> made doesn't work on the rev2 board.  Always know this was a possible issue
>>> but, you know, got a ton of other stuff to be getting on with.
>>> So spent until 4am building a fresh image from
>>> http://moebiuslinux.sourceforge.net/
>>> and works really well so far-which is good.  Didn't get my patching done
>>> though:)
>>> Long way of saying that I've updated my C file to reflect this and all
>>> working lovely.
>>> Thank you thank you thank you.
>>> Been much fun,
>>> Julian
>>> P.S. Will give this thread a nudge when I've documented it all (it's a
>>> whopper)
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