Search found 28 matches

by Pcborges
Thu Mar 05, 2020 7:31 pm
Forum: General Discussion
Topic: ESP32 to ESP32 local communication
Replies: 4
Views: 2258

ESP32 to ESP32 local communication

Hi, I have a project where I need more GPIO pins than freely available on the ESP32 and would like to have a second ESP32 managing some sensors and, when requested, send sensor reading to the main ESP32 to be uploaded to the internet via GPRS (no Wifi available). I would like to avoid using local Wi...
by Pcborges
Wed Mar 04, 2020 12:41 am
Forum: General Discussion
Topic: Send picture from ESP32CAM to ESP32
Replies: 0
Views: 736

Send picture from ESP32CAM to ESP32

Hi, I am working in a project where I need to transfer an image from an ESP32 to an FTP server via GPRS. The cheapest alternative I found was to use an ESP32CAM to take the pictures, send them to the TTGO T-SIM S7000G to be sent via GPRS to the FTP server. The TTGO does not have many pins left. WIFI...
by Pcborges
Sat Oct 12, 2019 1:27 pm
Forum: ESP32 Arduino
Topic: Preferences with FTP Client ESP32_FTPClient.h fails
Replies: 1
Views: 504

Preferences with FTP Client ESP32_FTPClient.h fails

I need to initialize FTP connection with credentials stored on Preferences. If I hard code like: //ESP32_FTPClient ftp("host.ftpserver.com", "ftpuser", "ftppass"); //WORKS OK preferences.begin("AppParms", true); String myserver = preferences.getString("ftpServer",""); String myuser = preferences.get...
by Pcborges
Mon Oct 07, 2019 9:55 pm
Forum: ESP32 Arduino
Topic: How to digest JSON data posted by http client to ESP32 Web Server?
Replies: 0
Views: 396

How to digest JSON data posted by http client to ESP32 Web Server?

Hi, My ESP32 WebServer sends a HTML page to a client browser. Customer fills the form and submits. Client browser posts form data using a var jsonFormInfo = JSON.stringify({ contruct type. Data arrives at ESP32 Web server as the console printout below. I am getting all the data I need (SEE BOLD TEXT...
by Pcborges
Fri Oct 04, 2019 11:50 pm
Forum: ESP32 IDF
Topic: WIFI/BLE Simultaneously
Replies: 52
Views: 34883

Re: WIFI/BLE Simultaneously

Hi, it is said above that using BT and WiFi at the same time as long as they are not used simultaneously may work. I cannot make it work even when only one is used at any one time. I have a ESP32-CAM that sends emails with photos but needs WiFi connection. Wifi credentials are stored on SD card. Ask...
by Pcborges
Thu Sep 26, 2019 11:31 am
Forum: ESP32 Arduino
Topic: ESP32-Cam and SD Card
Replies: 12
Views: 8058

Re: ESP32-Cam and SD Card

@ mozgy-eu

But what gpio pins are freed by initializing the SD Card this way?
Thanks
Paulo
by Pcborges
Tue Sep 17, 2019 9:56 pm
Forum: ESP32 Arduino
Topic: ESP32-CAM: Camera hex data stream use (How To?)
Replies: 0
Views: 461

ESP32-CAM: Camera hex data stream use (How To?)

Hi, I am trying to transfer an image from ESP32-CAM to Node-Red. ESP32-CAM can successfully save the image to SD and I can then view it on my PC. But when the jpg data stream arrives at Node_Red it looks like below: (FFD8FFE00010=jpg). An Exemple of what arrives to node-Red is as follow: FFD8FFE0001...
by Pcborges
Mon Sep 16, 2019 2:16 pm
Forum: ESP IoT Solution
Topic: ESP32 CAM post camera shot to Mosquitto MQTT broker not working...
Replies: 0
Views: 1656

ESP32 CAM post camera shot to Mosquitto MQTT broker not working...

Hi, would like to include a picture to my Node-Red Dashboard that subscribes to Mosquitto MQTT topics that currently shows Temperature and Humidity of the room it is installed. For that I addapted a script that can be found at: https://github.com/ldab/ESP32-CAM-MQTT to use Mosquitto instead of https...
by Pcborges
Wed Aug 07, 2019 3:29 pm
Forum: General Discussion
Topic: Use of cloud functions ... who are you using and what do you need?
Replies: 8
Views: 2765

Stream Analytics job Query ... the pain with Azure...

Hi, I am trying ESP32 with PlatformIO to send temperature and humidity data to Azure. I have got the ESP32 script to send the data as per terminal information: {"deviceId":"ESP32-DevKitC", "messageId":237, "temperature":17.000000, "humidity":72.800003} Info: >>>IoTHubClient_LL_SendEventAsync accepte...
by Pcborges
Sat Jul 13, 2019 8:04 pm
Forum: Sample Code
Topic: The need for a fully functional CoAp Server and Client support on ESP32
Replies: 0
Views: 1430

The need for a fully functional CoAp Server and Client support on ESP32

CoAp is one of the best protocols available to IOT devices: light weight, fast and simple to use. Has an observe resources support that prevents Clients from constantly pooling resource status from servers and thus saving big on network traffic. Unfortunately even the ESP8266 CoAp implementations fo...

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