See this thread
1 Like
is it possible to set the ds18b20 with a node mcu esp8226
1 Like
Yes
-=edit=-
misread ....you did mean 8266, yes?
-=/edit=-
willing to offer any help ?
Sure.
Flash the konnected firmware to the nodemcu
Install hubitat drivers
DS18B20 has 3 wires.
Data - > chosen konnected pin
Ground - > nodemcu ground
Power - > nodemcu 3v
If you want something a bit different, you could try SensorPush. Not Zigbee or Z-Wave, these sensors communicate via bluetooth with an app on your phone or with a gateway that allows remote monitoring and sensor readings to be stored in the cloud. They store close to a months worth of readings on the sensor itself, these readings then sync with your phone when you are in range and / or get uploaded to their cloud storage if using the gateway.
Battery life is about two years, and I can back that up myself, perhaps even longer, but a CR2477 isn't cheap. Neither are the sensors or the gateway...
They seem to have expanded the range since I bought mine, they now include pressure and other conditions, as well as waterproof versions.
I like the idea, like my Hue lights, that this is both self-contained system, but also something I have been able to integrate with my HE hub, though sadly using the cloud. I wrote a driver that downloads the current readings from the cloud periodically to a virtual device on my HE hub. These readings then get pumped out to InfluxDB / Grafana for charting. I plan to eventually sync any readings from the cloud that are missed, but have not started work on that yet.
Simon
1 Like
I am reminded that "where it really matters", and in situations of inaccessibility -
redundancy of sensors & repeaters is important and worth the $...not only for unit failure, battery failure(buy the best), but also for a cross-check;
e.g. is that temperature that seems to be anomalously high, or that motion, corroborated by another sensor of the same type, or even better, a different type?
As he types in the wee hours of the morning after being woken by a motion sensor triggering in an outbuilding, ...not by a person but... likely by a mouse that climbed higher than he/she was expected to.
1 Like
Funny how wanting to type lofty ideals can make us assess our own situation.... 
speaking from experience...
I use Sonoff, has worked great for over a year now.
1 Like
Thank you!! ... I'll see if i can get it flashed
1 Like
In my case with Alexa announcing it at 2am, 2:15, 2:30...... 
well I have tried and tried to get the 8226 flashed with konnected tried 3 different wires 2 different boards 2 different PC's . I have installed the V1 drivers as stated in the instructions.. All I get is a spinning wheel
Any suggestions?
not sure mate, I've done 30+.... maybe someone else can assist?
=/
-=edit=-
misread ....you did mean 8266, yes?
-=/edit=-
yes 8226
There we go then. That's not the ones I use. Mine cost about 2 quid.
possibly im confused now
Here is what I am calling a esp8226 node mcu
this is not what you are using
esp8226 nodemcu
It’s 8266.
Not 8226.
ok my bad ... can the esp8226 be used as the link i provided?
Your link is correct, i.e. 8266.
Don't get a 8226. Doesn't work. Wrong one.
1 Like
my bad
ok that is what i have been trying to flash the 8226
2 Likes
