VoltroveMIC1557 is now available with RPP! It’ll auto fire in a reverse polarity condition, but won’t affect anything.

Proteus project file: https://drive.google.com/open?id=10_gWsq2oYxhuZroiCzH90-YV88kyd1HZ

Input range = 2s-4s. Switching Frequency = 280hz

“How low can I build?” You want to build higher and use the voltage. That being said, 2s = 0.15 3s = 0.2 4s = 0.3

Board has markings for 0, W(wiper) and 100 pins on the popular 93 series pots. There’s pins behind the 0 and 100 on the pot and the wiper is in the middle.

Fire switch should be wired between BAT+ and VIN+.

License: Free for all! Build ‘em, sell ‘em, whatever you want. :)

I recommend getting 2oz boards if possible, but 1oz would work.

Digikey cart share:

https://www.digikey.com/short/p454vb

Digikey cart is setup for enough components for 3 PCBs.

The top and bottom stencil files are in the gerber zip. Simply download the gerbers and order stencils from OSHStencils or wherever else you like.

Feedback is welcome.

You can reach us @ mark at voltrove dot com