Hi,
I have an SSC-32 and Ping))) Ultrasonic range sensor, Sharp GP2D12, some other sensors and a WRT54GL router working on Linux. From these I’d like to build a simple wifi controllable car. It has to be controllable also via internet.
Servo motors are working and I cross compiled a test program for the router. Everything is working fine.
Now it is time to connect the sensor and I am not going to use a separate microcontroller for that, but to read it with SSC-32. I’m confused how to connect the sensor! Inputs on SSC-32 are A,B,C and D, each having 2 pins, yet one pin of them is indicated either + or - on the board (alternating). The Sharp GP2D12 sensor has 3 pins, two of them to power it, and one data line. Where should I connect this “one” data line, to those “two” pins of A input on SSC32 to read it?
I also read the manual, but no where it is mentioned why A has two pins and how to connect a sensor having one data line! Also, searching this forum and googling around, I didn’t find a picture to see how others did this. Please give some idea!
Actually, the **ABCD **inputs are only one pin each. What you are referring to as the second pin, labeled [size=150]±±[/size] are convenient points for power; 5vdc and ground respectively.
The data line of your sensor should go to one of the **ABCD **pins. The power can come from [size=150]±±[/size] pins (or another source).
I made a mistake and mentioned IR-SHARP at the topic but wrote about Ping))) and I don’t know how to correct the subject! Hope that administrator does this
To change the subject, click “EDIT” under the very first post (The top most post of the thread), and then you will see a “Subject” field above the body text. You can change the name/title here. when done, click “Submit”. In addition to moderators, the creator of the thread can modify the title.
You have connected a Ping to the SSC-32. You stated “Now it is working”… These are input only pins. There is no way to toggle the Ping to start taking a measurement, and there is no real accurate (think timing) way to read the received pulse anyway. Actually the right sensor to add to the SSC-32 is the Sharp GP2D12. It’s output is analog and can be read very easily.
Jim, thank you! Actually I tested with Sharp GP2D12 he he he, but because my original post was about Ping))) I asked Administrator to edit it. I didn’t know that I can’t use my Ping on it (it was my next test). May be you could kindly suggest an alternative to make Ping to work in this configuration?
I have to explain that, my WRT54GL has only 2 serial ports, and I will use one of them for an LCD, remaining with only 1 serial port. So I can not use my Arduino, say, to sit in between ssc-32 and router, to do the job with, say, Ping. One option is to use a PIC and make an embedded web server (say, with PIC18F97J60, Ethernet included), and command ssc32 via that (I plan to have a web server on the router to access the future robot via internet). Another is to hack the router more, to add a new port using GIOP of the broadcom cpu there, but I need this to use for extra flash memory (add an SD). I don’t know that much electronic, but I think there may be is a way to multiplex serial port, to somehow send the command from the router to Arduino, and from there to ssc32.
Snailkeeper, thank you! I also learned from SN96 to edit and changed my initial test to have both Ping))) and Sharp GP2D12 mentioned. As now there is a new problem to me: I could use my Sharp GP2D12, but as Jim says, Ping))) can’t be used in this situation and I hope you help me in this thread to learn how to use Ping))) too!
I made changes to that post to be more accurate, but, I was refering to non moderating users. Of course you hold the keys to all the doors! Remember the key maker in the matrix movie?
(originally asked)Hello, new to the boards. Am I reading correctly that the Sharp GP2D12 will interface directly with the ssc-32. What voltage range do the inputs (ABCD) read? Does the input voltage of the analog sensor need to be used in conjunction with a separate board to boost/clean signal? Is there benefit to running such a board, like the phidgets ir board. I did note the pull up on the digital side. just unclear on the analog.
(Edited to) Being that the input (analog) of the ssc-32 reads from 0 to 5Vdc, Will accurate sensor readings require an interface board such as the phidgets board? The sensors (Sharp GP2Y0A02YK) analog output is -3 to +3 Vdc.
How is the data from the sensor read from the ssc-32 ? I use RoboRealm with the tcp client server socket protocol for sequencer support to control my bot.
and a WRT54GL router working on Linux. From these I’d like to build a simple wifi controllable car. It has to be controllable also via internet.
