I have this logic level converter that only lets data flow when my multimeter is set to measure milliamps and the leads are placed across the high and low signal pins.
On the low side I have an altimeter (page 42 has relevant info), on the high side is a 5v arduino uno. I mocked them up in a protoboard and had to play around with the wires in their sockets but could eventually get the signal working. Once I soldered it in place, the signal was not making it across the LLC.
Here are some pictures of the actual LLC.
I stumped as to why it's not working when just sitting there, or when the signal leads are connected with the multimeter in volt mode, but the data flows just fine when the multimeter connects the signal leads in milliamp mode. I'm testing the data flow by outputting each character read from the serial port so I can view it in the serial monitor.
How can I fix this so it work more reliably?