I got got off the phone with Verizon, and they said the issue started on Aug 28 where some phones got a network update that limits their ability to connect to the towers. He's making a ticket with the network team to bridge from the tower to our iphone to push the network software update.
I guess many phones can't connect to get the update to fix their last bad configuration.
Has anyone used dark color 3D filament printed onto copper clad PCB as photo resist or etch resist?
It might be tricky printing PLA directly to copper clad PCB, but then you could expose the board to UV or etchant to make the PCB traces. Then remove the PLA plastic to expose the copper traces.
I didn't realize this was the same creator of the tiny LED matrix earrings. I love the attention to detail in the work and the article. Super interesting!
I would use a variable power supply, amp meter and some sacrificial fuses. Slowly turn up the voltage while watching amps on the circuit until it blows? Or simply apply the rated amps (with current controlled power supply) to verify if/when the fuse blows.
I have a multiple-fuse assortment kit that was a great (too good?) deal from AliExpress. Now I'm thinking I need to do some of those tests myself to verify their rating.
https://www.youtube.com/watch?v=4xgx4k83zzc