I use an Arduino UNO with a Lorabee. My basic serial passthrough script only works only after I interupt the powersource of the lorabee. It seems that the interruption of the power triggers the lorabee to power on.
I'm sure there is another way to get the lorabee powered up. I tried to send HIGH voltage to the DTR pin (pin 9 on the left side, next to GND). But that did not change a thing.