PDA

View Full Version : db9 to usb adapter


hondaman1986
05-06-2007, 12:34 AM
ok i just got my megasquirt and the only way to get a db9 serial to usb cable is to order one so can anyone tell me how to make one and save $30???
bobafett
05-06-2007, 01:04 AM
umm they shouldnt be $30, and the materials involved in making one will probably run you even more. especially since you will probably need special crimping tools. :)
frantik
05-06-2007, 01:55 AM
here's one for 11 bux
http://www.provantage.com/cables-go-26886~7CBTR00R.htm (http://www.provantage.com/cables-go-26886%7E7CBTR00R.htm)

im pretty sure it's not something where you just attach one cable to the other.. there's some circuitry or something involved and thus it's not gonna be cheaper even if you have extra serial and usb cables laying around

edit: here's one for $2 http://www.marketworks.com/storefrontprofiles/processfeed.aspx?sfid=65170&i=197016316&mpid=3888&dfid=1
2ndGenGuy
05-06-2007, 07:37 AM
Yeah you're going to have to learn some low-level programming and flash your own microcontroller, or buy a generic USB -> serial controller chip and custom solder it all to a PCB. You can't just adapt the cable. You should be able to buy an adapter for $10-20
bobafett
05-06-2007, 09:12 AM
so yeah, buying one sounds even more like the right idea! :)
hondaman1986
05-06-2007, 10:28 AM
Yeah you're going to have to learn some low-level programming and flash your own microcontroller, or buy a generic USB -> serial controller chip and custom solder it all to a PCB. You can't just adapt the cable. You should be able to buy an adapter for $10-20


yea i was just wondering i guess ill just buy one. thanks all
cygnus x-1
05-06-2007, 04:34 PM
Normal serial (RS-232) and USB are not compatible without some extra circuitry. You need a purpose made adapter.

C|
hondaman1986
02-01-2008, 07:00 PM
Normal serial (RS-232) and USB are not compatible without some extra circuitry. You need a purpose made adapter.

C|

i bought one just after my last post so they can get rid of this thread
coope
02-01-2008, 07:45 PM
i want to click that free parts so bad but im scared its sum stupid lol
turabaka
02-01-2008, 09:09 PM
i want to click that free parts so bad but im scared its sum stupid lol

If you're refering to the one in frantik's sig. It's not dumb. It just links to one of his for sale threads where he's got free parts. So you're safe. lol
coope
02-01-2008, 11:11 PM
oh lol im going to click wait ok clicking ............now