Hi
when i use adafruit example code i have no errors but when i use blynk example code i receive nothing when i connect dht pin and when i remove it i receive Failed to read from DHT sensor!
Sorry for bad english
Share your code, then we could understand your problem better
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Please repost your code properly… Thank you.
What’s about your project at blynk app?
Are you sure that you configured the widgets’ pins properly?
I also had problems with the DHT11 + blynk, strangely when I sent the temperature first and then the humidity… it didn’t work but if it did the opposite … yes.
Try to use a small delay (10 or 20ms) after read the dht values… sometimes this works
i changed code to this i dont need humidity but still no answer from dht 11
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what he said
I’ll repeat…
Is your ESP running the latest firmware…2.4.1?
@trystan4861 he shared his Auth Code on the Blynk cloud server:
so you can see the widget setup here:
http://blynk-cloud.com/0a56a8e7575e4612a32a9296ede415c4/project
There’s two gauge widgets, with no mapping, connected to V5 and V6 plus a slider connected to GPIO16.
@cloni the pin that the DHT sensor is connected to is different in your two sketches - Pin 2 in the first sketch and Pin 4 in the second sketch. Are you aware that these are GPIO numbers, not the “D” numbers that are screen printed onto the NodeMCU board?
GPIO 2 = NodeMCU D4
GPIO 4 = NodeMCU D2
Pete.
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@cloni Please go back and edit your posts with properly formatted code… read the above provided links to see how that is done.