Sharp Distance Sensors with I2C

GPS · Aug 22, 2013

For my own rover, Data Bus, I've been working on a board that converts Sharp range sensors to I2C.
I ran out of analog ports and had to prototype an I2C solution for my obstacle detection. I have this problem on all my robots. Pokey has too few analog ports. And I want to run a few of these on my RPi tele-rover.
They'll work with any Sharp ranger. For that matter, with any analog sensor (ideally at 3.3V or 5V). I plan to test a Maxbotix Sonar module soon.
Up to 27 of these on an I2C bus without re-programming the base address.
The firmware's oversampling, decimation and low pass filtering increases resolution and lowers noise floor. The analog anti-alias filter helps too. Performance is really good. Here's a pseudo-theremin demo:
Click to expand...

Read more and see photos via the source link.

Source:
http://diydrones.com/profiles/blogs/sharp-distance-sensors-with-i2c

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Sharp Distance Sensors with I2C

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