NodeMCU API Sketch With 5 Temp and 1 Humidity Sensor, and 4 Line LCD Panel Example

[thomauto@aol.com]

Bill,
I thought about dusting off my NodeMCU which I purchased a over a year ago now to just display a couple of lines of sump pump activity in my basement. I believe these devices operate on 3.3v. But the display needs 5 volts to work. I was hoping to use a spare cell-phone charger/adapter. Do I need a separate power source for my 2-line display? As well, which sketch do you use which has the wifi and networking stuff?

Thanks,

Robert

On my NodeMcu/ LCD setup its powered by the USB connector and I connected the LCD to the Vin pin, I used a I2C type LCD.

[langenet]

Bill,
I thought about dusting off my NodeMCU which I purchased a over a year ago now to just display a couple of lines of sump pump activity in my basement. I believe these devices operate on 3.3v. But the display needs 5 volts to work. I was hoping to use a spare cell-phone charger/adapter. Do I need a separate power source for my 2-line display? As well, which sketch do you use which has the wifi and networking stuff?

Thanks,

Robert

[labbie48]

I can live with it the way it is but why does one of my 18B20's bounce between the actual temperature and -196F ?

[bdraper]

I'm a noob at this but have gotten 4 sensors to work. Use them for outdoor and indoor temperatures that trigger events. I'd like to sense the temperature every 5 minutes so I'd have to use a delay(300000) where in your code would I place this? After each sensor or just after the last one?

You really can't put in a delay and have the plug-in work correctly, there are ways around this and it is talked about in the manual for the plug-in.

Wit that said, alter this line in the code and adjust it to your needs.. Good luck on your project.

const long interval = 5000; // interval at which to blink (milliseconds) 5 seconds

[labbie48]

I'm a noob at this but have gotten 4 sensors to work. Use them for outdoor and indoor temperatures that trigger events. I'd like to sense the temperature every 5 minutes so I'd have to use a delay(300000) where in your code would I place this? After each sensor or just after the last one?

[sirbooker]

Thank you for sharing this.
Paul.

[bdraper]

Wow, this looks awesome! Thank you for the inspiration and the code!

Thanks Moskus

[Moskus]

Wow, this looks awesome! Thank you for the inspiration and the code!

[bdraper]

This is a graph that is produced using the data from some of the sensors over the last 7 days. I use the Database Graphing Utility by jon00



See this link for more info on the Database Graphing Utility, https://forums.homeseer.com/forum/3r...for-homeseer-3

[bdraper]

bdrapper,

Thanks for posting this. Could you possibly point me to the LiquidCrystal_I2C library you used? I'm having trouble finding one that works.

Thanks in advance,
steve

Sure, no problem. I was going to update the original post but ran into the limit no more than 6 pictures per post.

Used Arduino IDE version 1.8.1

See this link for the NewLiquidCrystal library used in the project https://bitbucket.org/fmalpartida/ne...stal/wiki/Home

These are the libraries and version used in the sketch.



Hope this helps, let me know if you have any other questions.

[RTFMplease]

bdrapper,

Thanks for posting this. Could you possibly point me to the LiquidCrystal_I2C library you used? I'm having trouble finding one that works.

Thanks in advance,
steve

[bdraper]

Thanks Billy (bdraper) for sharing and taking the time to detail your setup. Being an Arduino noob, I cut down your code to just the DHT22 sections and have mine up and reporting temp and Humidity. Can I ask which DHT library you used? That took me the longest to figure out which to install as there are a number of options. I used Seed Studios

Based on this thread, what attracted me to HS3 instead of other HA software was it flexibility and customization capabilities. What is challenging with HS3 is the flexibility. Just for getting temperature, there is so many ways, its mind boggling. Now I'm going to look at MQTT as that opens up even more possibilities :-)

Graham

Sorry, I never even thought about posting any of the libraries... thanks for asking. I will try to update the post this weekend...

This is the DHT Library that i have installed.


Let me know if you need anything else.

Thanks

[kideon]

Thanks Billy (bdraper) for sharing and taking the time to detail your setup. Being an Arduino noob, I cut down your code to just the DHT22 sections and have mine up and reporting temp and Humidity. Can I ask which DHT library you used? That took me the longest to figure out which to install as there are a number of options. I used Seed Studios

Based on this thread, what attracted me to HS3 instead of other HA software was it flexibility and customization capabilities. What is challenging with HS3 is the flexibility. Just for getting temperature, there is so many ways, its mind boggling. Now I'm going to look at MQTT as that opens up even more possibilities :-)

Graham

About to go down the MQTT rabbit hole as well... and start playing with this Arduino plugin ordered my first nodemcu over the weekend. I my make an old school physical control panel with buttons switches and LED

[Horse]

Thanks Billy (bdraper) for sharing and taking the time to detail your setup. Being an Arduino noob, I cut down your code to just the DHT22 sections and have mine up and reporting temp and Humidity. Can I ask which DHT library you used? That took me the longest to figure out which to install as there are a number of options. I used Seed Studios

Based on this thread, what attracted me to HS3 instead of other HA software was it flexibility and customization capabilities. What is challenging with HS3 is the flexibility. Just for getting temperature, there is so many ways, its mind boggling. Now I'm going to look at MQTT as that opens up even more possibilities :-)

Graham

[Mike Johnson]

Thanks to all for sharing your setups. I've been wanting to get some temperature readings into Homeseer. This thread pushed me into action - I've ordered a few parts so I can give it a try...

Mike