First of all, I would like to say hello to you guys. I'm still learning Arduino and Iam trying to read my digital indicator's measurement using Arduino uno:
https://forum.arduino.cc/index.php?topic=79174.0
However it seems like to be not working on mine.
My digital indicator has 5 pins. I traced each pin using DMM and I found that this is the pin configuration.
Pin 1: gnd
Pin 2: ?
Pin 3: ?
Pin 4: Nc
Pin 5: V+
It seems like it's more of a USB connection and pin 2 and pin 3 seems to be the data+- instead of CLK and data. Pin 5 is connected to V+ which supposed to be the request pin. Sadly it is unbranded and no part number what so ever printed on it, user manual don't have anything that can help me either.
Any Idea what should I do to make reading from it?
I caution you against trying to hook this up to your computer's USB port, however tempting it is. If it is not USB, it could damage your computer. If there is absolutely no identifications on the sensor, can you get a good shot on the ICs to give us some hint what chips are on your sensor?
liuzengqiang:
I caution you against trying to hook this up to your computer's USB port, however tempting it is. If it is not USB, it could damage your computer. If there is absolutely no identifications on the sensor, can you get a good shot on the ICs to give us some hint what chips are on your sensor?
Luckily, I'm not that adventurous enough to think to plug it in to my PC. It has no other IC aside from a blob of black resin on the middle of the PCB.
Here are the pictures:
The image code won't work
Please attach & inline images, so it looks like this:

Nothing there to go by, really.
Look for a part number, dig up the data sheet which should have info about the digital interface, if any. That failing, look for PCB markings for clues.
I would imagine similar to digital calipers, ie a coded output, or rather at least 2 different types. Perhaps look around the hackers forums and you might find some more detail there.
wvmarle:
Please attach & inline images, so it looks like this:
..
Nothing there to go by, really.
Look for a part number, dig up the data sheet which should have info about the digital interface, if any. That failing, look for PCB markings for clues.
Thanks for doing the IMG thing for me