[PD] Sensors GPIO Raspberry Pi Pd

[Julian Brooks]

Super-useful, thanks Martin.

Will be testing it out in a couple of days so will report back then.

Julian


On 29 April 2013 16:38, Martin Peach <martin.peach at sympatico.ca> wrote:

> Here's a patch to display data from two D6T sensors on the same I2C bus.
> The clock line is switched using a 4051 analog multiplexer. The control
> line is GPIO_17 of the Pi connected to A of the 4051 (B, C and Inhibit are
> at 0V). 10k resistors to 3.3V are on each sensor's clock line at X0 and X1
> of the 4051 (I2C clock connects to X). Because the code accesses the GPIO
> file system it needs to be run as root. I have two different sensors so the
> code reads two different packet lengths. Just a proof of concept, there
> could be up to 8 identical sensors on the same bus with this setup.
>
> Martin
>
>
> On 2013-04-25 20:04, Julian Brooks wrote:
>
>> Just spotted this:
>> https://github.com/kadamski/**i2c-gpio-param<https://github.com/kadamski/i2c-gpio-param>
>> Could be useful
>>
>>
>> On 25 April 2013 15:54, Martin Peach <martin.peach at sympatico.ca
>> <mailto:martin.peach@**sympatico.ca <martin.peach at sympatico.ca>>> wrote:
>>
>>     On 2013-04-25 10:37, Julian Brooks wrote:
>>
>>         'Nother 2 dumb questions:
>>         What's the difference between the ones that have
>>         spider/centipede type
>>         legs and the straight ones (which would be best to get).
>>
>>
>>     The PDIP package is what you want, not the SOIC. The only difference
>>     is size. DIP packages are human-friendly, surface mount is for robots.
>>
>>
>>         And also are you attaching the MC14051 to any type of
>>         board/adaptor or
>>         just soldering straight on to the pins?
>>
>>
>>     I have it in a breadboard right now, to make it more permanent I
>>     would solder a socket to a prototyping board then (after verifying
>>     the connections) plug the chip into the socket. Soldering to the
>>     pins makes it difficult to replace the IC, and risks damaging it
>>     with the heat if you're not good at soldering quickly and to the
>>     point. A CD4051 would also work, it's basically the same circuit.
>>
>>     Martin
>>
>>
>>
>>
>
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