How long of a cable does it support (i.e. how far from the controller can it be?) If it was placed outside, it would be helpful if the controller could be placed in a more secure l...

Hello,
If Lark lights up red it is usually because of a configuration file error. You can reset the Lark by formatting the Lark on your computer (just like formatting a USB flash drive) and then plugging the Lark back into the computer (you will need to plug and unplug the Lark twice, as the Lark needs to be powered up twice during initialization).
Regarding the firmware, we are not releasing an updated version of the firmware at this time, so at this time we are only releasing the firmware update tutorial, but not the firmware.
If the Lark still lights up red, please take a screenshot of your configuration file information for us to check.

Here is a onetime secret (https://onetimesecret.com/s... which will expire after the first person hits it. It has my e-mail. That's the only thing I can think of. (the feel free to contact me was in reference to DFRobot folks :-) btw )

RE: setup

I've had a couple friends suggestions write up a tutorial or something...haven't had time yet.
So to continue via this forum....

First, depends on what type of information you want to gather. And budget, of course...
So, assuming you just want to start with temp and humidity (those are pretty simple sensors to acquire and fairly low cost) and that you have a raspberry pi to gather the data. (let me know if you'd need step-by-step instructions or whether you're comfortable with this initial setup)

Here, (I'm in the southern USA) I use standard outdoor utility boxes, such as this : https://www.amazon.com/YETL... to store the equipment.

This one comes with 2 glands, which are ways to allow cables to run in/out of the container while maintaining a seal. They "grip" around the cable... you do need to make sure the cable diameter is a reasonable close match of the size of the gland. But with this box you could run a power cable in (or perhaps utilize a POE cable) and be able to get data via either the wired ethernet or wifi (assuming you have that available as well). I have things like this outside my house with power running to a protected outlet... and use both wifi and wired ethernet, depending on the sensor set up. I don't have to deal with monsoons, but sometimes an occasional hurricane... which can destroy things like weather masts... (yup, version 1 and 2 got broken because of that.... version 3 held up ok...no hurricanes, but some strong winds... version 4 is about to go up soon)

I also utilize clear nail polish as a conformal coating. (Read up on that -- that's how to protect electronics from corroding via humidity... there are other more "production grade" coatings, but I found clear nail polish works rather well.)

That's at least a start...