I gave an esp8266 with MQTT that send the humidity and temperature sensor and LDR sensor data to a PI withmosquitoes serve installed in it. I have noticed that after few hours there is no more data shown in the chart of the node-red ui. What can be the reason? Is there any limitations of the data that mqtt/node-red can handle? Or it is an issue with esp8266?
That’s a configuration that you have to set in the Node-RED Chart node.
Do you see the “Old after” field? you simply have to set for how many day you want to keep the data in the chart
the “Old after” setting was set 1 days but it stops before a completing a day only few hours later. is there anything else can be?
Does it delete all the data? How frequently are you publishing new values to the chart with your ESP?
It was set every 30 seconds then I changed it to 4 minutes. with 4 minutes it too slightly longer time as oppose to 30 seconds?
I’m sorry for taking so long to answer, but I was testing the Node-RED UI charts with various times and more sensor readings to see if I could replicate that error. But it works fine on my end…
- Which Raspberry Pi are you using?
- Which microSD card size do you have?
- Did you follow this Unit to expand the microSD card size? https://rntlab.com/changing-the-raspberry-pi-settings/
- Can you tell me the configuration that you have on your chart node? How many charts do you have?
Thanks for your patience