cheap usb ttl adaptor for datalogging
06-08-2004, 05:36 PM
#1
1.0 BAR
Thread Starter
Join Date: May 2003
Posts: 326
cheap usb ttl adaptor for datalogging
Im pretty shure that ti caculators communicate using ttl (simular the the ecu). If this is true there is usb adaptors at bestbuy for $9 for the TI graph link. I know nokia DKU 5 data cables can be modded easly to work with the ecu. Has anyone ever tried this with the TI data link cable.
06-08-2004, 07:23 PM
#2
1.5 BAR
Join Date: Sep 2003
Posts: 660
Re:cheap usb ttl adaptor for datalogging
To test a cable's compatibility with ECUControl:
Get your voltmeter out and measure the voltages.
If the TTL part works somewhat like the MAX232 and simliar, this should apply:
--The RX is likely to be around 2.5 volts. When you fiddle with it, you should see strange characters on the terminal screen.
--The TX will likely be close to 5 volts, and the average voltage will drop when you send data from the PC.
And of course if you put the two together, whatever you type on the terminal should be echo´ed back.
-Posted by Bindegal on PGMFI
Get your voltmeter out and measure the voltages.
If the TTL part works somewhat like the MAX232 and simliar, this should apply:
--The RX is likely to be around 2.5 volts. When you fiddle with it, you should see strange characters on the terminal screen.
--The TX will likely be close to 5 volts, and the average voltage will drop when you send data from the PC.
And of course if you put the two together, whatever you type on the terminal should be echo´ed back.
-Posted by Bindegal on PGMFI
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