[sineDko]

yes its 3d printed custom desing. its not easy to see but there are holes in the side to harness the built in fans so its nicely cooled without need of adding fans. i was looking in the phone but i dont have any photos disassembled. i am not using soldered connection but drill thru pcb, you have to be very careful since its multi layer pcb and isolate the layers in between. i am not using shunt, but hall effect ammeter, you just lead the wire thru the sensor, its very neat and saves a lot of space

i attach illustration of the ammeter. theres nothing to say about voltmeter, thats basic.