When using this mod with the "Circuit Power Measurement Pole" mod - more specifically, when placing down a Circuit Power Measurement Pole, then placing a constant combinator, and mousing over the combinator, I will reliably get a crash. This is in conjunction with your mod, of course.

Here's a screenshot of the crash: https://steamcommunity.com/sharedfiles/filedetails/?id=1782944199. Here's a link to the Circuit Power Measurement Pole mod: https://mods.factorio.com/mod/Circuit_Power_Measurement_Pole. I'll also post a message relating to this crash in that mod's forum as well. I'm not sure there's anything you need to do, but consider this an FYI.

I've been enjoying using your mod, and find it very useful when building large structures from blueprints, when the bots would drain my batteries dry half way through. For me, it wasn't always obvious the armor add-in was working until I upgraded to Mk 3. Even one of them charges up the batteries MUCH faster than a fusion generator. Again, thanks for the great mod!

Hope this is helpful, and thanks.

Was due to personal-transformer-mk3-output-entity having no corresponding item, and that mod trying to create signal for it. Which is fine with vanilla game, where all power producers have items that can be used as signals, but breaks down in this case.

Fixed it by aggregating such non-item signals into one "others" circuit network signal there, but if anyone will need to count how much their armor specifically contributes to the grid, maybe add a dummy non-craftable item for it or something.
Probably not worth the hassle for relatively-insignificant armor output, obviously, only thought to mention in case someone might ask or stumble upon this thread randomly.