LCR T4 Handheld case

thingiverse

I acquired one of these LCR-T4 meters recently, and I must say it's incredibly convenient. The only drawback is that it requires a 9v battery, which never lasts as long and costs more than cheap AA batteries. Additionally, none of the designs I've seen have a good way to hold it while testing something, which is a problem for me since I'm often in the field just as much as I am in the shop. As a result, everything needs a handle. In an effort to kill two birds with one stone, I added a handle to it and loaded it up with AA batteries. This design also allows for rechargeable batteries, making it super handy now. The holes in the battery lid enable me to run more alligator clip wires out of the battery pack, turning this into a multi-use tool that can function as a 1.2V, 2.4V, 3.6V, 4.8V, 6V, 7.2V, 8.4V, or 9.6V battery pack. This is achieved by accessing the battery taps in the battery pack. I can also configure it for negative voltages, which are great for building Op-Amp Circuits. Print and assemble; see my other battery box designs for details on batteries and springs. I picked up some alligator clips from Harbor Freight, cut them in half, and soldered the wires to the 1-2-3 SMT pads on the LCR meter.