Hello,
I'm new here in posting, and would first of all like to make clear that my electronics background is VERY limited.
So please bear with me in this thread..
My "problem" is as follows:
I have a "device" used to interface a machine with a pc to read out all the various data.
The problem is the manufacturer is asking heaps of money for it. And looking at it, is doesn't seem very much worth it.
It's converting the machine's interface to rs232 with a d9 connector.
I use it with an rs232->usb converter on my laptop.
It also uses a usb connection solely for power supply (i guess)
Below you can find 2 pictures of the device:
http://users.telenet.be/bart.e/cable1.jpg
http://users.telenet.be/bart.e/cable2.jpg
I was wondering if this circuit is something that can easily be recreated using available parts.
I see it uses a max232. So i guess it's a TTL to rs232 converter?
The smaller black ic's are optocouplers? So i should find something that's also isolated.
I find a lot of ttl to usb converters online, like this:
http://www.ftdichip.com/Support/Documents/DataSheets/Cables/DS_TTL-232R_CABLES.pdf
Is this really the same basically? Can i measure if it's 5V or 3.3V?
Thank you. If there's more info i can supply, just ask..
I'm new here in posting, and would first of all like to make clear that my electronics background is VERY limited.
So please bear with me in this thread..
My "problem" is as follows:
I have a "device" used to interface a machine with a pc to read out all the various data.
The problem is the manufacturer is asking heaps of money for it. And looking at it, is doesn't seem very much worth it.
It's converting the machine's interface to rs232 with a d9 connector.
I use it with an rs232->usb converter on my laptop.
It also uses a usb connection solely for power supply (i guess)
Below you can find 2 pictures of the device:
http://users.telenet.be/bart.e/cable1.jpg
http://users.telenet.be/bart.e/cable2.jpg
I was wondering if this circuit is something that can easily be recreated using available parts.
I see it uses a max232. So i guess it's a TTL to rs232 converter?
The smaller black ic's are optocouplers? So i should find something that's also isolated.
I find a lot of ttl to usb converters online, like this:
http://www.ftdichip.com/Support/Documents/DataSheets/Cables/DS_TTL-232R_CABLES.pdf
Is this really the same basically? Can i measure if it's 5V or 3.3V?
Thank you. If there's more info i can supply, just ask..