Clue + Microbit Crikit, which Crikit pins are free?

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norlight
 
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Clue + Microbit Crikit, which Crikit pins are free?

Post by norlight »

Hi,

When using Clue with the Microbit Crikit (and CircuitPython, if that matters), are all of the pins I see in front of the connector on the Crikit available? Or is Crickit using some of them? I didn't see this mentioned in the Crikit Learn guide and it is not super obvious to me.

For example, the Microbit+MicrobitCrikit robot example uses a couple of those pins for a distance sensor. Safe to use those from the Clue? I also see an sda/scl pair of pins, can I use i2c devices there? or is that where Seesaw is?

My ultimate goal is an RCWL-1601 distance sensor for my robot friend, and wondering what the options are in this setup.

Thanks!

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dastels
 
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Re: Clue + Microbit Crikit, which Crikit pins are free?

Post by dastels »

Crickits use connections for I2C, Audio, and Neopixels. For the Microbit/CLUE model, that's briefly described in the Crickit guide at https://learn.adafruit.com/adafruit-cri ... ep-3000938.

You can connect other I2C devices as long as they have an address different from that of the Crickit (0x49).

For the distance sensor, just pick two other digital pins for it.

The CLUE is edge connector compatible with the Micro:bit.

Dave

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norlight
 
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Re: Clue + Microbit Crikit, which Crikit pins are free?

Post by norlight »

Yes, I saw that guide, but I guess I thought it would be specific about eachof the through-hole connections on the Microbit Crikit.

So from that document, I gather that Crikit/Seesaw are only using:
* SCL, SDA
* P0 (audio)
* P16 (neopixel)

So pins P1-15 are free to me to use? Won't conflict with Seesaw/Crikit?

Thanks for your help.

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dastels
 
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Re: Clue + Microbit Crikit, which Crikit pins are free?

Post by dastels »

That's right. Other than audio (the Crickit has an amplifier and speaker connection) and NeoPixels (the Crickit supplies power and a level shifter) everything is via I2C. That's the (not so) secret sauce of the Seesaw boards.

Dave

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