@sundberg84 I'm looking to hard coded as well. To much problems with automatic created nodes. Especially when testing with the same Arduino Nano. Full of fail when reconnect an node with other sketch and eeprom_clear does not solve that problem. 'Still using after all these years'? Thanks anyway for the hint!!
Posts made by HJ_SK
RE: Hard-coding Node IDs vs. Using Controller-Assigned
RE: Advise - Building air quality sensors/network
I'm using MQ2 for Co2, LPG and Smoke. On MySensors is with radio good example.
More complex (including calibrating is to find here : sandboxelectronics.com)
I always start with testing new items without radio to better understand it's working.
The I switch (with more knowledge) to MySensors including Radio.
If your new (as I am) I should suggest to first try only 1 gateway. There is enough to learn by doing so.
About battery : I use 1 or 2 x 18650 in housing with USB connection to Nano or Uno or whatever else Arduino. That powers a 'set of 3' weeks to months of enough power. You can also use or choose for example LiPo. Much smaller, less in capacity but in my opinion better then AA or AAA.
And they're all rechargeable of course, what's far better for the environment!