Search found 5 matches

by Nikosant03
Mon Mar 25, 2019 11:34 pm
Forum: ESP32 Arduino
Topic: Calling a function
Replies: 1
Views: 156

Calling a function

Hi everyone, I compile and upload the following sketch on esp32 devkic void setup() { Serial.begin(9600); Serial.println("Hi"); count(); } void count(){ for (int i=0;i<5;i++){ Serial.println(i); } } void loop() { } The problem is that the serial monitor shows nothing.. When I upload the same sketch ...
by Nikosant03
Sun Mar 17, 2019 12:35 am
Forum: ESP32 Arduino
Topic: esp32 does not read analogue values
Replies: 5
Views: 925

Re: esp32 does not read correct analogue values

I started receive some measurements but are quite inaccurate. I compared the voltage readings of esp32 with that of my multi meter and there is high deviation. For example with the multimeter I read 0.14V while with esp32 0.01V. I suppose that this is not some issue of my code. The ADC reading is qu...
by Nikosant03
Sat Mar 16, 2019 3:56 pm
Forum: Hardware
Topic: Control 5V relay with ESP32 DEVKITC
Replies: 2
Views: 502

Control 5V relay with ESP32 DEVKITC

Dear all,

I've got an ESP32 Devkitc and I need to control a 5V relay through a GPIO pin.

I will supply 5V (using a battery and dc/dc converter) into the 5v pin of ESP32. The GPIO outputs is going to be 5V OR 3.3V?

In general is it possible to control a 5V relay with ESP32?

Thanks is advance
by Nikosant03
Fri Mar 15, 2019 8:19 pm
Forum: ESP32 Arduino
Topic: esp32 does not read analogue values
Replies: 5
Views: 925

Re: esp32 does not read analogue values

Dear idahowalker thank you for your detailed responce. Yes I know that ESP32 way is more accurate but I am not so familiar at the moment with ESP32 functions and programming. The sensor I use is from here http://wiki.seeedstudio.com/Grove-Luminance_Sensor/ with Linear output range 0.0 ~ 2.3V. so it ...
by Nikosant03
Thu Mar 14, 2019 6:32 pm
Forum: ESP32 Arduino
Topic: esp32 does not read analogue values
Replies: 5
Views: 925

esp32 does not read analogue values

Hi every one I try to connect an analogue luminance sensor that I bought from Seed. I use arduino IDE to program my esp32 devkic. I cannot take any measurement from my esp and I figured out the don't read the analogue values. I try a lot of adc pins with no luck Any suggestion? Do I need to #include...

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