Sensor Connection to SSC-32

Lynxmotion
1

Can I directly wire sensors to the SSC-32 or do I need some electronics in the mix - what would they look like?

Specifically, I wanted to wire things like the URS-01 and DE-11 to one of the four Analog inputs (A,B,C,D).

I think the URS-01 requires some signalling to make it ping and I was hoping to use one of the servo control lines (say #31) and send it HIGH or LOW through the programming interface.

Thanks,

Reggie

2

Here is a way to connect a FSR sensor to the SSC-32. It would work just as well for the DE-11, or the Sharp GP2D12.
lynxmotion.com/images/html/build129.htm

Edit: I corrected an error on what sensor the tutorial is for.

3

Seems to be info for FSR’s, not the GP2D12.

There is a response curve that needs either a look-up table or an algorithm, something similar to what is used for the GP2D12 IR sensors.

Alan KM6VV

4

Well, I decided to try the SRF04 connection first cause I just purchased the servo housing for it.

I’ve got a pretty neat java program to control the servo’s. It’s running on a AJ100 based micro controller and drives the SSC-32 via the serial port. I wanted to get range finder data back to the controller. The SSC analog IO pins seemed to be the logical choice. Also, I found that I could send a logic low or logic high to any pulse pin (kind of like digital output). So given that I wired the SRF04 pins : black - 0v ground, blue - trigger pulse input, yellow - echo pulse output, red - 5v supply.

I connected:
red to SSC pin 30 (2VS)
black to SSC pin 30 (GND)
blue to SSC pin 31 (PULSE) - I could have gone to pin 30 PULSE but used a 3way molex with the white line open on pin block 30.

Yellow I want to connect to the A, B, C, or D pins.

I’m not sure which one it should connect to (+ or -). Also where does the connection to the other side go? to Ground? e.,g. PIN 31 (GND)

P.S. I’m using a 9V powersupply to power the SSC-32. Oh and there no resistors/capacitors/transistors, etc. in my wiring.

Reggie

5

I don’t usually discourage experimentation, but I have serious doubts this will work. You can turn on and off outputs to start a ping, but there are minor timing issues with doing this that will skew your results in a major way. Good luck with it.

6

Might want to consider using the SRF08 instead of the SRF04. The SRF08 has an I2C interface, which might be available on your 'bot controller.

Alan KM6VV