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DevHeads IoT Integration Server
The DevHeads IoT Integration Server accelerates technology engineering by helping pro devs learn, share and collaborate.
JoinDII
DevHeads IoT Integration Server
The DevHeads IoT Integration Server accelerates technology engineering by helping pro devs learn, share and collaborate.
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Simple IP based intercom device voice communication protocol
I like to know , which voice communication protocol helps me to setup and make voice communication between IP based intercom device.
Things to be considered
- zero configuration
-automatically stream audio
-con call option...
Solution:
The other thing to look at would be gstreamer - you could use that to encode the audio and then send it over the network to the receiver.
use MAX485 TTL to RS485 Converter Module with esp32 to get convert value of rs485 output to serial
need help related to using - use MAX485 TTL to RS485 Converter Module with esp32 to get convert value of rs485 output to serial and print it on serial port
Solution:
I guess you'll find the details about addressing scheme or the format of the data packets, including how to address specific devices (slaves) on the bus. So that you can write code for esp32 to read flow meter data.
how do I use the requests library to send data to an HTTP endpoint in MicroPython on an ESP8266?
Hello guys, how do I use the requests library to send data to an HTTP endpoint in MicroPython on an ESP8266? My code fails to connect.
Here's the code:
```python
import requests
...
Solution:
Shouldn't that be
i.e.
response = request.post('http://example.com/data', data={'sensor': 'value'})
response = request.post('http://example.com/data', data={'sensor': 'value'})
data instead of json...working on a project which involes esp32 works as an Audio source, connects to Bluetooth
Hello everyone,
I'm working on a project which involes esp32 works as an Audio source, connects to Bluetooth (bt) headset/speaker.
The requirement is that, esp32 first scans and pairs to bt headset then transfers the audio source....
Is the Built-In TCP/IP Stack in GPRS Modules Redundant for Embedded Linux, or Are There Benefits?
Good day everyone, I'm exploring GPRS modules for embedded Linux. Many vendors offer modules with built-in TCP/IP stacks. Since embedded Linux usually has its own TCP/IP stack and uses PPP for cellular connections, is this embedded modem stack redundant, or are there use cases where it's beneficial? @Middleware & OS
Solution:
It's mainly redundant. It's done for MCUs
connect and control a smart LED strip device running on NodeMCU (ESP8266) with Google Cloud IoT
How can I connect and control a smart LED strip device running on NodeMCU (ESP8266) with Google Cloud IoT Core using MQTT to get a faster response in data transmission ?
@Middleware & OS...
Solution:
how can i implement secure communication between IoT devices using Transport Layer Security (TLS)
Good day guys how can i implement secure communication between IoT devices using Transport Layer Security (TLS) in embedded software in C programming language (peer to peer communication between devices), also are there any light weight libraries for implementing this in embedded systems, or key points to consider
@Middleware & OS...
Solution:
There are various steps to take here. This is a helpful guide.
Secure Communication in Embedded System
https://www.linkedin.com/pulse/secure-communication-embedded-system-madhavan-vivekanandan?utm_source=share&utm_medium=member_android&utm_campaign=share_via...
How can I reduce the energy consumption of WiFi and MQTT?
Hello guys , I'm working on developing an IoT temperature and humidity sensor for my cellar. I'm using NodeMCU ESP8266. I'm sending the information to an MQTT broker.
The battery (18650 3.7V 19800mAh Li-ion rechargeable lithium batteries)
Lasted only 1 day 😂.
How can I reduce the energy consumption of WiFi and MQTT? Is there a way to achieve low power consumption?
Thank you....
Solution:
WiFi is a massive power drain. You may want to investigate something like LoRa https://en.wikipedia.org/wiki/LoRa which has a long range and lower power consumption.
implementing secure authentication on edge impulse
Hey guys, @IoT Cloud so lately I have been working with Edge Impulse , but I'm having trouble implementing secure authentication with the Edge Impulse SDK in Python. I'm using a Raspberry Pi 4 as the hardware and MQTT as the communication protocol, but l've tried various configurations and I'm still getting authentication errors. Can someone please share their expertise on how to resolve this issue and ensure secure communication with the Edge Impulse platform?
Solution:
Check your credentials, authentication method, MQTT topic, and payload format. Ensure everything matches the expected format. If issues persist, reach out to Edge Impulse's support.
Does anybody worked on Quectel EC200 series SIM module for establishing an MQTT connection to cloud
AT+QMTCONN=0,"deployment-fc9b6ee2","chara","chara"
OK
+QMTCONN: 0,1...
Solution:
```cpp
#include <PubSubClient.h>
#include <QuectelMQTT.h>
const char* mqtt_server = "your_mqtt_server";...
Implementing real-time communication with MQTT
Hey guys am Implementing a real-time communication between IoT devices using the MQTT protocol. I'm working on the embedded software written in C++. The devices will act as both a publishers and subscribers, I'm using ESP32 platform,
What are some key steps or considerations for implementing real-time communication with MQTT in this environment, are there any required C++ libraries for working with MQTT on embedded platforms?
@Middleware & OS...
Solution:
1. Choose an MQTT library
2. Set up Wi-Fi connectivity
3. Configure an MQTT broker
4. Implement publisher and subscriber logic
5. Handle connections and disconnections...
Establish a secure MQTT connection to a broker using TLS on an ESP32
@Middleware & OS
Hello everyone, I have a code that I'm trying to use to establish a secure MQTT connection to a broker using TLS on an ESP32. However, I keep getting an undefined error when calling ...
espClient.setCACert(test_root_ca). In order to fix this error, I need to generate a CA certificate using
openssl req -new -x509 -days 3650 -key ca.key -out ca.crt
openssl req -new -x509 -days 3650 -key ca.key -out ca.crt
Solution:
@Boss lady your code looks correct to me and should run perfectly well without any issues once all required parameters are field, just in case this is what it looked like once I tried it out
```cpp
#include <WiFi.h>
#include <WiFiClientSecure.h>
...
interested in learning about constraint gauges
Hi @aymen ammari , I'd be interested in learning about constraint gauges and how they might be better suited for detecting millimeter-scale bends.
facing issues reading data from the SIM800 module
Good day devs, I tried integrating a SIM800 module with FreeRTOS for a small start up. I plan to use HAL_UART functions with a timeout mechanism for UART communication, but I'm concerned about later on interference with the FreeRTOS scheduler. Please and please I need guidance on implementing the timeout functionality without disrupting the scheduler.
I'm facing issues reading data from the SIM800 module. But I've declared a buffer and attempted to print its contents using
printf(ReadBuffer), nothing is displayed. How can I correctly read and process the received data?
I don't know if I should use TCP/IP to connect the SIM800 module to a server.
```...I'm building an IoT device with secure communication (TLS) but want to add extra security
I'm building an IoT device with secure communication (TLS) but want to add extra security with device authentication. I use tokens and TI's tm4c129encpdt, cc3100, and TI RTOS. Are there standard authentication methods to assure clients of secure communication and device identity?
Solution:
Consider these standard authentication methods:
1. Device Certificates (X.509)
2. JSON Web Tokens (JWT)
3. OAuth 2.0...
What is the max date bit rate transmission using Lora Wan ?
What is the max date bit rate transmission using Lora Wan ?
Solution:
Yes, the low data rates enable the very long range. It's also important to note that, if you follow the specification, that the data rate isn't under your control, it adapts to the RF conditions. You can force certain data rates to fit your application, but then you will have range trade-offs and may give up full interoperability with other LoRaWAN devices (which may or may not be important to you).
I want to establish communication between ESP and Raspberry Pi using MQTT
Good evening,
I want to establish communication between ESP and Raspberry Pi using MQTT to take readings from the GPS and send them to each other, dividing the topics based on the distance between them. Can anyone help me with a similar project or assist me in general?...
Solution:
Troubleshooting MQTT SSL Error: Ensuring Secure Communication for Smart Home
Hey guys I decided to use MQTT for my smart home energy management application, but now I'm encountering an SSL handshake error when trying to establish a secure connection between my smart thermostat and MQTT broker. I've tried updating my thermostat's SSL certificates, but the issue persists. Should I
I continue troubleshooting MQTT SSL configuration or find other approach to ensure secure and reliable communication for my smart home application?
If yes which approach do you think is best? @IoT Cloud...
Solution:
1. Check the thermostat's SSL certificates.
2. Verify the MQTT broker's SSL configuration.
3. Check network connectivity and firewall settings....
I faced a challenge choosing between MQTT and CoAP!!
Hey guys while i was architecting a smart home energy management application requiring flexible communication patterns, I faced a challenge choosing between MQTT and CoAP please which protocol offers more adaptable client-server relationships and communication models to support my application's unique needs? @IoT Cloud
Solution:
I suggest using MQTT. Proper design of the MQTT Topic Structure is critical. Please check my article for the reference: https://www.thingrex.com/mqtt_topic_structure/
Utilizing GPRS (GSM) Module for Mobile Database Interaction: Module Options and Challenges
Hello,
I have a mobile unit that I want to use to upload and receive data from a database like Firebase. Since Wi-Fi is not an option, I am considering using a GPRS (GSM) module, which utilizes the cellular network.
Has anyone tried this approach? If so,...
Solution:
Hey check this out, this is a very good and nice option, it uses cat m and NB IOT which is faster and better than 2G protocol.
https://www.waveshare.com/sim7000g-nb-iot-hat.htm...