Sunday, June 15, 2008

Syringe Logic Probe, Revision 2


While my original probe is damned useful, it was a bit of a rushed job. Since then, I've found uncoated silver jewelry wire whose diameter is just a hair smaller than the inner diameter of the needle, allowing me to force it in for an electrical connection. More importantly, as I no longer solder to the outside of the needle, I can restore the safety cap and save my fingers from getting nicked.

--Travis Goodspeed
<travis at utk.edu>

4 comments:

Chris said...

Where did you get the needle?

Travis Goodspeed said...

My needles were found amidst other junk in a friend's attic, but you can order suitable syringes from veterinary suppliers on Amazon.com. I'm still looking for a source of the nerve stimulator needles that Patridge mentioned in reply to my May 15th article on this topic.

Radiothermal said...
This comment has been removed by the author.
Radiothermal said...

In many places, syringes are over the counter at bricks-and-mortar pharmacies. I've purchased any number of syringes/needles to give subcutaneous fluids to a cat with weak kidneys, no questions asked. I think the last six or so I got were something like 4 dollars.