How To Make A 1g Datalogger Cable

[jott5555]

i know you can make your own datalogger cable.. i did a search and came up with nothing. any posts on how to make your own datalogger cable for a 1g.

 

[tpi_roc]

This is for a palm.

 

[DevilSperm]

all the info you need is here http://www.4g61t.com/forum/viewtopic.php?t=7414&highlight=datalogger

 

[jott5555]

thanks guys.... time to bust out the iorn. i saw a infomertical on tv for a sold heat solding iorn its cold then instintly heats up to like a million degrees when it contact metal.. kinda seemed like a rip to me..

 

[steve]

, It's been interesting how far the schematics have gone. I didn't make the original but the second image with the pins changed to explain how to modify the circuit for a Palm was first posted here on Tuners.
http://dsmtuners.com/forums/showthread.php?t=100135&page=2&pp=25&highlight=logger

Steve

 

[DevilSperm]

all you have to do is flip the diode 180 degrees from the pic shown above to get it to work with a palm

 

[steve]

I don't follow you. The circuit tpi_roc posted works exactly as shown for a Palm.

Steve

 

[Mike1992]

I tried those diagrams for laptop and i couldnt get it working for me, i gave up and threw it all away.

 

[steve]

Unless your laptop has a serial port that's forgiving about the voltage levels it accepts the passive datalogger cables won't work and you'll need an active circuit like the one on the MMCd site. What come out of the passive circuit isn't RS232 my any stretch of the imagination but works with MAXIM style serial interface chips.

The reason for two versions of the circuit is because of the differences in the way a PC serial port is configured versis a Palm hotsync cable. The fundamental difference in the diagram is the switching of pins 2 and 3 to account for the fact that a PC is a DTE and a Palm hotsync cable is a DCE. The other difference is the sex of the DB9 connector. female for a PC, male for a Palm.

Steve

 

[DevilSperm]

I don't follow you. The circuit tpi_roc posted works exactly as shown for a Palm.

Steve

theyve edited the original thread i got it from, so the pic above is right

 

[steve]

Cool, I thought I was having a senior moment.

Steve