hoping someone can help answer this, but looks like on the new Proffieboard V2 configurator, the recommended kill switch goes between the Batt+ of battery and proffieboard. In most previous experience I had with kill switches, they are placed on the GND returning to Batt-
so my questions:
1. is there advantage doing the swithc on the Batt+ line?
Post by profezzorn on Sept 13, 2019 12:38:42 GMT -5
1. Yes. Since the power for the main blade doesn't travel through BATT+, it reduces the load on the kill switch, and lets you use smaller switches.[*] 2. If they were connected directly to BATT-, that would be true, but the negative side of the neopixels should be connected to LED2/3, where the FETs can cut the power when not in use.
[*] On a V2 board, it is also possible to cut the bridge between BATT- and GND and place the switch there, but AFAIK, there are no advantages to doing it that way over putting it on BATT+.[**] [**] The reason for having a cutable bridge between GND and BATT- is to support compatibility for the 8-pin blade connectors that I've been using in some of my builds.