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urs8000 / Feinstaub_LoRa_SDS011_DHT22

initial commit 20170823
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ESP32 + SDS011: only zeros #1

Open melzai opened 5 years ago

melzai commented 5 years ago

Hej Urs, thanks for your code. I am testing a very similar setup at the moment with an ESP32, SDS011 and the DHT22. While DHT22 works fine with the DHT library for the ESP32 and we were successful to couple it with Blynk, I was not able to get readings from the SDS011. The Debug output instead returns zeros when summing up the readings over time. My SDS is connected to the ESP32 to 5V VIN, GRND, T to R and R to T. It does not seem to shut down but loops through the proper code. Have you ever experienced such a phenomenon? The sensor works fine with an Arduino by the way but the wireless shield for the Arduino is too unstable to send out data - so no easy way out here.

Thanks for your help. melzai

urs8000 commented 5 years ago

hi melazi

 

no with the ESP32 I had never a problem.

I've found a small SDS011-library   https://github.com/ricki-z/SDS011 

so you could test the SDS011 alone (I've never used that lib).

 

If you have a separate serial/USB adapter you could also read the vales from/to the SDS011 with an other terminal program (do not connect Vcc from the adapter, only GND, Rx, TX)

 

good luck

urs

 

Gesendet: Freitag, 09. November 2018 um 21:35 Uhr Von: melzai notifications@github.com An: urs8000/Feinstaub_LoRa_SDS011_DHT22 Feinstaub_LoRa_SDS011_DHT22@noreply.github.com Cc: Subscribed subscribed@noreply.github.com Betreff: [urs8000/Feinstaub_LoRa_SDS011_DHT22] ESP32 + SDS011: only zeros (#1)

Hej Urs, thanks for your code. I am testing a very similar setup at the moment with an ESP32, SDS011 and the DHT22. While DHT22 works fine with the DHT library for the ESP32 and we were successful to couple it with Blynk, I was not able to get readings from the SDS011. The Debug output instead returns zeros when summing up the readings over time. My SDS is connected to the ESP32 to 5V VIN, GRND, T to R and R to T. It does not seem to shut down but loops through the proper code. Have you ever experienced such a phenomenon? The sensor works fine with an Arduino by the way but the wireless shield for the Arduino is too unstable to send out data - so no easy way out here.

Thanks for your help. melzai

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