nodeMCU RGB conntroller unstable with DTH-22 sensor

Need Help With My Project
1

Gents,

I have a problem with the nodeMCU module.
On this module are 2 functions Implemented

  1. DTH-22 sensor (temp, Humi)
  2. RGBW led controller on pin(GPIO12, 13, 14 ,15) based on IRF520 MOSFET.

The DTH-22 sensor works and the RGBW controller as wel.
But the RGBW controller flashes when sending temp and Humidity data to the server.

I like to have a stable controller of course. How could help me with this issue.
I used the template from the:
https://examples.blynk.cc/?board=NodeMCU&shield=ESP8266%20WiFi&example=More%2FDHT11

The RGB is controlled by zeRGBa tested both options:
Split and merge.

p.s I get frustrated that I cant make it stable :wink:
=> Hope someone could help me out.

2

try

timer.setInterval(60000L, sendSensor);

no need to get temp every seconds

3

Dear Alexis,

Thanks for you replay I strongly appreciate that.
About the solution you propose. This reduce the problem I agree but it don’t solve it. still we have a flashes every 60 sec.

Do you have ore someone else a solution that solve the problem completely.

4

Stick a decent separate power supply on your ESP, and connect the ground of that supply with the ground of your Arduino board.

Pete.

5

You need to provide more details about your exact situation…

  • How you have everything wired.
  • Power sources.
  • How is the mosfet involved.
  • Exactly what type of WRGB LED are you using (like simple 5 pin or some form of NeoPixel?
  • Show us the exact sketch used (there is no WRGB control in that example sketch. Besides the ZeRGBa doesn’t have a control option for any White channel.