5V Relay module operation issue

Other Hardware General Electronics
1

I am usinh UNO.

One VL53L0X sensor is already connected. I need to operate one dual channel 5V relay using two digital pin (4 and 12). No other connection is there.

But the relay is not responding. When checked with Multimeter, voltages are varying 1.5V (LOW) to 3.8V(HIGH). Relay details link: https://robu.in/product/2-channel-isolated-5v-10a-relay-module-opto-coupler-arduino-pic-avr-dsp-arm/?gclid=CjwKCAjw5MOlBhBTEiwAAJ8e1tl78Eqctq-crP3OokYD-A1i2Eedupv56ExWvnWRPafB_SN2RapTURoCTPMQAvD_BwE

Arduino UNO is powered by USB serial, alternatively 12V DC to VIN pin. Same result.

Is it a power issue? What is the socution?

3

Where is the relay Gnd and Vcc connected?

4

Both VL53L0x and relay Vcc connected to 5v pin, both GND connected to Arduino GND pin.

5

I need to connect one potentiometer to this arduino as well to receive one 0~5V variable input.

6

Hi,
Note;

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image949×231 29.2 KB

Tom.. :smiley: :+1: :coffee: :australia:

7

Well, I checked it once again.

High voltage=5.07 v in digital pin.
LOW voltage=3.19v in the same.

Why it is not going below 2 volt?

8

Ohh..I forgot to set the pinMode to output.

Problem solved.

9

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