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I have a number of IoT devices that need to be able to connect to a central device. The ideal solution would be a sort-of homegrown router that uses an ESP32 or other solution that can operate as an ...
I am implementing a oscilloscope GUI to visualize the data coming from the I2S mic connected to ESP32. The data is transmitted to ESP32 over WiFi through TCP socket connection to PC client where the ...
I'm working on a remote (off grid) nest box monitoring project, which should be both low-cost (volunteer-funded) and low-power. No video streaming required, only a snapshot over mobile network every ...
Long time web programmer now getting into electronics as hobby projects and perhaps small custom productions.
I'm partial to using microcontrollers instead of Pi's, because I'm thinking I don't need ...
I did some brief search on the matter, but it doesn't really help. I want to detect when people approach each other too closely, and - possibly, in the future - leave too great a distance between one ...
I'm working on a project that requires multiple ESP32s to be able to receive a signal from a smartphone in order to close/open a set of doors. The catch is that this will be happening in a remote area ...
I have an ESP32 with OV2640 camera and a GY-MAX4466 amplified electret microphone module and I would be able to connect it to ESP32 to stream voice and video in realtime when I connect to its IP, ...
I am working on a project where I have got an ESP32 device (Wifi & Bluetooth), which reads data from some sensors, such as temperature and soil moisture (outdoor environment).
The data is then ...
Related question : (Dev) board to develop my own Amazon Ring(tm) -like doorbell.
I am unable to find out if the TTGO T-Camera Plus has a speaker, though which I could play audio which the ESP32 ...
Please excuse the very vague title, I had no idea how to condense my question into a title.
Unit A - ESP32
Unit B - what I am looking for
HOME_WIFI - The wifi network broadcasted within my home.
...
I'm new to IoT. I'm trying to connect more than one device to relay and control via ESP board(tested with esp8266 and esp32), I'm using mqtt connecton for signaling.
So here's whats happening
If I ...
I am are trying to use a sim800L module to connect an esp32 running Arduino to AWS MQTT. I need to connect and publish and subscribe to topics. I am doing this successfully via WiFi. Not via the ...
Summary
I would like to build (ideally based on ESPHome) a device with a buzzer I can trigger remotely via the network.
Context
I have several systems built around my home automation system:
Home ...
I push my sensor readings from product A, B, C, D to an online cloud provider.
Then my customer (call him E) needs to access all these sensor readings and make a dashboard for his customer X, Y Z.
...
I am trying to store certain text in SC Card memory, but the SD Card save the last line or it does not work at all
I'm working with ESP32 microcontroller
this is my code
#include <SPI.h>
...
I want to be able to program my ESP32 (same for ESP8266) remotely, I have used ArduinoOTA without problems, and I can upload the file into the ESP selecting the local file that I want to flash.
...
Recently I am working on programming IoT Project, to receive messages from the phone. That part worked, but the problem that I am currently facing is that the message does not arrive fully because of ...
This is yet another provisioning BLE/Wifi question.
We are looking to secure the initial communication between our mobile application and smart device (esp32, ble and wifi). We want to make this as ...
TL;DR When trying to use some pins of my ESP32 to read analog signals, it turns out those pins have a non-zero voltage, messing up the measurements. Why?
I got myself an Olimex ESP32-POE-ISO (see ...
I'm having some trouble with mqtt ssl example on esp-idf ESP32.
Example: mqtt_ssl
If I test it with the default broker "mqtts://mqtt.eclipse.org:8883" and default certificate "mqtt_eclipse_org.pem"
...
I am using esp-IDF library and esp32 for smart lighting. I want to maintain the state of the lights when power goes off as it can be written somewhere in NVS.
Such implementation is available for ...
I´m currently working on a project where I have some clients (ESP32) which should communicate over MQTT with my broker.
It should be also possible to change some parameters with an app. The easiest ...
I can successfully flash my ESP32-CAM to do the blink demo but when I try to run the code below I get the following error (b/t the asterisks/bar.)
It seems the "Serial Camera Control Bus" (SCCB) is ...
I am trying to build an application like Wemo App for learning purpose and I am stuck at a place. I am using ESP32 for this learning. In the future, it can be ESP8266 or any other.
In the wemo device,...
Are there any standardised test standards to test the Wifi Range of my ESP32 inside of my products enclosure. I want to know what range(s) it can operate so I can provide recommendations to users of ...
I don't really understand the way the things works:
How connected plugs can be switch from an external device (not in the local framework)?
I understand that a way is to configure personnal internet ...
I have used esp32 in my projects and its easy to use. But I want to try using CC3235SF. But how does it work exactly? It has on-board RAM and 1MB Flash, so does it mean I can program it directly like ...
Reading AWS IoT documentation I see that the proxy could only be an Android or iOS device.
To be more precise I’d like to publish from BLE (nRF52840) To AWS IoT using MQTT, but this device doesn’t ...
I am using an ESP32 with a MicroPython Firmware and want to make asynchronous HTTP requests such as GET request. I have tried using usocket but it did kept throwing OSError 128. I have attached my ...
I have trying to find examples for codes to exchange data over bluetooth between esp32 devkit module and an Android device. I want to use SDP to broadcast a service and then make my Android app ...
I am plug & play, non-soldering type.
As such, I love Grove Connectors.
Does anyone know of a non-soldering, preferably non-breadboard, way to use them with the ESP-WROVER-KIT-VB development ...
Is barcode scanning with an ESP32 possible? Is there an existing project, of a library that I could use?
Any idea how to go about it?
If not feasible, would it make sense to stream video from the ...
I was testing a system based on some devices connected to a WiFi network. There are 3 devices that make part of the system: A raspberry Pi, an ESP32 and a laptop PC. The raspi acts as a Apache server ...
I am writing firmware for different boards supporting FreeRTOS, Zephyr, ...
My problem is when I am developing the firmware, I should run the firmware on the "real" device from the beginning and ...
As a follow-up from Can I retrieve a Python program from an ESP32?, I would like to make things a little more difficult for those who would steal my code (I do realize that I cannot prevent it).
Can ...
I and my friends are getting started with ESP-IDF. We want to get familiar with Embedded C development and ESp32 seemed to be a very good candidate for our later needs. The problem is there are ...
JetBrains PyCharm blog announed a MicroPython plug-in for PyCharm.
Alas, its GitHub page says
The plugin supports these devices:
BBC Micro:bit
ESP8266
PyBoard
Np ESP32 :-(
Can one remotely ...
I have an ESP32 recording values from an ADC at a rate of 1 sample/second.
I need the ESP32 to send new values to a device (let's say a smartphone app for now, eventually via a server), as they are ...
I am trying to figure out how to convert an image to base64 on the ESP32 Cam board so I could then send it to AWS s3 bucket. Could someone please give me some insight?
I am just getting started with PlatformIO and have chosen a Heltec WiFi Kit 32.
I loaded the PlatformIO demo espidf-http-request, built it and loaded it, but the serial terminal shows
�␄@�␀␙␔␄␔␀�...
I am in need to configure two UART connections from Olimex ESP32-EVB to a scanner and to a card reader.
I was exploring the GPIO pins that could have helped to establish those connections, but ...
What is the best sensor which can be integrated with esp32 and can be used to measure liquid level in a tank. I used HCSR04 and JSN but both of them were not good. Are there any other recommendations ...
I am switching to Platform IO as my ESP32 IDE. Alas, none of my boards are supported by the debugger. See https://docs.platformio.org/en/latest/plus/debugging.html#piodebug
To save me along time ...
I chose this one at random
https://github.com/esp8266/Arduino/blob/master/libraries/ESP8266WebServer/examples/HelloServer/HelloServer.ino
but looked at the code of others & hope that there is ...
So, I asked a question on Hardware Recommendations, looking for a
Windows USB dongle for LoRa/LoRaWan and BT5/BLE
I want to develop on ESP32 and to use my Windows laptop as a server to the ESP32's ...
Context
I am from a software engineering background, so I don't know too much about electric engineering apart from basic stuff like Ohm's Law (but willing to learn if needed). I'm building a garden ...
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