Search found 13 matches

by martinius96
Wed Jul 15, 2020 1:38 am
Forum: ESP32 Arduino
Topic: WiFiClientSecure Memory allocation failed
Replies: 1
Views: 205

Re: WiFiClientSecure Memory allocation failed

Without code, ESP Arduino Core version, used board... We are unable to help
by martinius96
Mon May 25, 2020 4:46 pm
Forum: ESP32 Arduino
Topic: Unable to upload image (without gray strip) more than 640x480px to Google Drive - ESP-CAM via HTTP POST base64 payload
Replies: 1
Views: 504

Unable to upload image (without gray strip) more than 640x480px to Google Drive - ESP-CAM via HTTP POST base64 payload

I am solving such a problem for the ESP-CAM platform ... I have ESP-CAM, which is a microcontroller with an OV2640 camera. I am sending the photo via HTTPS POST request to Google App Script that save it to my Google Drive. Payload photo is base64 format. The photo is uploaded and fully visible. Proj...
by martinius96
Thu Apr 23, 2020 9:13 pm
Forum: Sample Code
Topic: MQTT & MQTTS - Sample implementation for ESP32
Replies: 0
Views: 2153

MQTT & MQTTS - Sample implementation for ESP32

Hello, today I would like to show you sample implementations for connection and Publish / Subscribe to MQTT Broker. Example is using public MQTT Broker located in Slovakia - use only for development (not my Broker)... Everyone can see / modify your datas there. MQTT Broker details: http://imag.secto...
by martinius96
Fri Dec 27, 2019 8:18 pm
Forum: ESP32 Arduino
Topic: ESP32 as WiFi access point crashes on connection
Replies: 3
Views: 1417

Re: ESP32 as WiFi access point crashes on connection

Show your whole code please.
by martinius96
Fri Dec 27, 2019 7:39 pm
Forum: ESP32 Arduino
Topic: Soft AP ESP32 & multiple clients
Replies: 6
Views: 1491

Re: Soft AP ESP32 & multiple clients

Without Async library for webserver you cannot get IP address of client. So in that case you can use 2 webpages on Webserver and one client will use first page, other will use second page. Or you will connect to same page with both clients, also... One client must end its connection... (You havent e...
by martinius96
Thu Dec 26, 2019 10:06 pm
Forum: ESP32 Arduino
Topic: Soft AP ESP32 & multiple clients
Replies: 6
Views: 1491

Re: Soft AP ESP32 & multiple clients

E-mail me: martinius96@gmail.com
I can help you.
by martinius96
Thu Dec 26, 2019 8:44 pm
Forum: Sample Code
Topic: OPC-UA Web service - ESP32
Replies: 0
Views: 6636

OPC-UA Web service - ESP32

OPC UA architecture has been operating since 2008. Today I would like to write something about my implementation in Arduino core of a simple sensor network based on OPC UA architecture. The implementation includes standard client --> server communication, using various types of clients to send and r...
by martinius96
Mon Nov 18, 2019 3:11 pm
Forum: Sample Code
Topic: Currency rate - currconv.com - ESP32 - Webclient
Replies: 0
Views: 5503

Currency rate - currconv.com - ESP32 - Webclient

The currency exchange rate is a very interesting piece of information that can be used in a project with Arduino or a development board from the Espressif platform. There are a number of freely available and documented APIs that can be used to get the current exchange rate of two currencies. For thi...
by martinius96
Thu Sep 05, 2019 10:14 pm
Forum: Sample Code
Topic: ESP32 control via UDP datagrams
Replies: 1
Views: 5952

ESP32 control via UDP datagrams

Today I would like to point out the possibility of controlling the ESP32 development board by sending UDP messages for easy ON / OFF control. This is one of the easiest ways to send data, process it, and take action based on the information received. ESP32 is a platform that is used in most cases in...

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