I have soldered several small PCBs, and I want to stack them together (using hex spacers).
However, since lack of (vertical) space it could be that some components (on the top) might touch the wires/solder junctions (on the bottom) of the PCB above.
What is a good way to prevent this?
I was thinking about thin wooden or plastic plates between the layers, however, this will cost some (vertical) space, especially where the wires/solder junctions from the above PCBs are lower than the top components of the PCB below.
So another way I thought was to use two 'layers' of electrical tape, stick together (with the 'glue' sides towards each other). So it is like a flexible 'plate'.
Would such a thin (< 1 mm electrical tape 'layer') be enough to isolate signals around 5 V, and very low current (DMX512 signals)?