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In The Air – Week 13

In the past weeks, I experimented with the GP2Y10 dust sensor from Sharp. Using an Arduino all was well, but I was running into problems when using it with the CC3200. It’s not the only issue I encountered with the CC3200. There was also the fact that the I2C pins of the CC3200 and FuelTank did not match.

I’ve tried to tackle both issues with a custom BoosterPack (my first!).

Templates

To start, I searched for BoosterPack templates. I quickly came across the ones from TI: Build Your Own BoosterPack for TI LaunchPad

The BYOB kit from TI contains a variety of files for different tools: Eagle, Fritzing, … Very nicely done and easy to find!

Eagle

Using Eagle, I created a schematic and board. Now, I don’t have much experience with Eagle. I did fiddle a bit with it during the Forget Me Not challenge, but never got to making an actual PCB. Fritzing seems to be more up my alley, but anyway … let’s proceed.

I loaded all the required parts in the schematic and started connecting all the dots. There are four parts to this schematic:

  • the opamp circuit as suggested by shabaz on the element14 forums
  • the circuit required to hook up the dust sensor
  • the launchpad headers
  • an optional I2C connection to overcome the mismatch between FuelTank and CC3200

This is the schematic:
Screen Shot 2015-01-25 at 19.55.27

For the board, I laid out the components across the available space and let Eagle do the routing. This is the resulting board:
Screen Shot 2015-01-25 at 19.55.14

Nothing spectacular, but I’ll be more than happy if I manage to get it soldered and working

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© Frederick Vandenbosch, 2014-2018. Unauthorised use and/or duplication of this material without express and written permission from this blog’s author and owner is strictly prohibited. Excerpts and links may be used, provided that full and clear credit is given to Frederick Vandenbosch with appropriate and specific direction to the original content.