Led not glowing, please help4

1

Sir my project is turning on and off led using Google assistant,my led is not glowing

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Please help,sir please respond soon sir it’s my humble request

2

Please check-

  1. LED configuration with the bolt wifi module (LED +ve leg and -ve leg connection)
  2. Assuming that you are using boltiot module in coding, please check the PIN number you have hardcoded in digitalWrite(<PIN*>,‘HIGH/LOW’) function.

Note - PIN* - >Pin # where you have put in one leg of resistor

3

In both code and hardware set up I used same pin

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I’m I correct sir

4

Where is the resistor? It should be connected to LED right?

5

no need of resistor for producing led light .we need resistor in plant monitor for light intensity.

6

The problem might be you had reversed the both negative and positive terminals.
Or due high current flow the LED might have shorted.

7

I too faced a similar issue with LDR(input device); when I tried using it without resistor i wasn’t getting the required output. When i used resistor, LDR worked for me.

Please try using the resistor with LED once to check if the LED is working or not.

  1. Connect +ve (long leg) of LED to one leg of resistor
  2. Connect -ve leg(short leg) of LED to GND of module
  3. Connect other leg of resistor to 0 pin.
8

In my project on and off led using mobile, first I got output but later I’m not getting it please help

9

@sreejavijayagiri Check if the LED is working first by connecting it to 3v3 and GND. If it turns on, then connect the pin on 3v3 to 0 and try again.
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