arduino pro mini pcb bridge

Xavier wrote: Could you share your design before you order the PCB?
Did you think of a cheap fitting enclosure and battery holder?
Do you have a target for price/unit?

I've started with PCB before 4 months now I've testing sensors in real life. PCB footprint is similar to Arduino Pro Mini. The idea is to use same PCB for different low power sensors with no, or very little additional components.

Xavier wrote: As I understand it means you plug a pro mini on one side and on the other side the headers for RF24, sensors and power.

No, it would be too big. I mean new Arduino low power board suitable for various sensors, with similar size and footprint as Arduino pro mini. Just wait and you will see.

Xavier wrote: Any news? Maybe a picture of the prototype?
Due to power consumption I don't think a single ESP8266 solution could be a challenger. Can it?

I'm preparing final version before production. It will be NRF24L01 version only, not ESP8266. If you are in hurry don't wait this board. It's hard to say when it will be finished, maybe in 1 or 2 months.