Questions tagged [network]

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Send only one packet from one ESP32 to another ESP32 without acknowledgment

I have a network consisting 10 slaves and one master. I am using ESP-NOW to send the messages between the nodes. All of the nodes are within close proximity. I do NOT need a mesh network to reach all ...
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1answer
45 views

ESP32 send data to another ESP32 without establishing a wifi connection

Originally I was creating a project consisting of the Atmega328P and NRF24L01 to create multiple arduinos that could talk to each other. Basically I was creating something like this: As the network ...
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55 views

ESP-NOW host not receiving data

I'm trying to set up a network like the following: |Host| <-------> |Node x 3| I want to have a two-way connection between a host and each node, but each node cannot communicate with other nodes....
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18 views

SIM900A network connection

I can't connect to the network. Hardware used: Arduino UNO and SIM900A GSM module Tutorial used: https://www.instructables.com/id/GSM-SIM900A-With-Arduino/ Sim card used: Orange (I set it on 2G ...
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2answers
59 views

How to change wifi credentials of multiple ESP8266 together

I need to change WiFi credentials of multiple ESP8266 in one go, without needing to change passwords for each of them individually. I know there is a WiFiManager library, which makes your ESP8266 ...
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27 views

Use SIM800 module with bare ATmega328

I want to migrate from an Arduino Uno to a bare ATmega328 to save energy. I already tested it with a script that blinks and puts out a few chars on the serial connection. The LED blinked and with a ...
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1answer
50 views

aRest.io - how does it work?

With aRest.io you are able control your Arduino/Esp from all over the world - but how? In the Client SourceCode (found here) you only find the PubSubClient, which is an MQTT client. I'm assuming: ...
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1answer
547 views

SIM800L is not registering on network

I'm testing SIM800L module by registering to network manually and I'm getting an error message. Here are the commands I tried. AT+CSQ +CSQ: 31,0 OK AT+CBAND? +CBAND: EGSM_MODE,ALL_BAND OK AT+...
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33 views

Arduino Uno Wifi R2 Mesh Network

I currently have a project that uses a few Xbee S1 modules to report temperature measurements to a computer. I'm thinking about reworking the project to use the newer Arduino Uno WiFi R2 boards. Is ...
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861 views

Sniffing thermostat protocol CC1101 868MHZ

I am using this libary from github:https://github.com/veonik/arduino-cc1101 With this example code. I will try to read the data which is send from a 868Mhz thermostat. I am using a arduino Mega and ...
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784 views

CC1101 sniffing 868Mhz Protocol from thermostat

Hello i buyed a cc1101 because I want to sniff thermostat protocol which works with 868 Mhz. I found this repo https://github.com/veonik/arduino-cc1101. I tried to download the repo and include the ...
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2answers
416 views

Arduino network with minimum wiring

For a parking management system I am going to create an Arduino network. An Arduino with an ultrasonic sensor will be placed above each parking space. If car is parked at specific location Arduino ...
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1answer
4k views

Testing network of SIM900A

Do I have to connect RX and TX of SIM900A with any pins (say TX, RX of Arduino) for network purpose? Shouldn't the network status LED blink slower after connecting the power sources with SIM900A?
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1answer
228 views

Multiple node network communication over I²C [closed]

I am working on a project where I want to send data from and to different Arduinos on a network. At the moment I²C seems the best option for my needs since I can specify where to send the data. But ...
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2answers
196 views

Need to “Extend” a Arduino Digital Signal

Here's the scenario: We have 1 arduino uno accepting DMX and converting that to a signal that is being sent out digitally (PIN 3). The digital signal then goes to several IR LED senders that control 3,...
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2answers
1k views

Is there a way to update Arduino uno Over The Air [duplicate]

I have the Arduino uno with a Ethernet W5100 Shield and would like to remotely sketches. Is there a way to update Arduino uno over the air? If not, is there a wired network arduino solution that ...
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1answer
906 views

How do I send tweets with flame sensor and ESP8266?

I want to send tweets with flame sensor and ESP8266. My flame sensor is digital. I think everything is good but it doesn't send. This is my code: #define ag_ismi "SSID" #define ag_sifresi "PASSWORD" ...
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1answer
2k views

Problem with using multi-node nRF24l01+ with Arduinos

I have 3 nodes in my system. One centralNode and two sensor nodes (right and left). Sensor nodes transmit data to the centralNode and receive from it. centralNode may transmit to both nodes and ...
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1answer
505 views

RF24 Network and Payload

i struggle to figure out the max payload for the RF24 Network library without payload fragmentation. It uses a NetworkHeader with the Attributes from_node, to_node, id, type and reserved. This must be ...
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32 views

What is the quickest and simplest way for two Arduinos, with network shields, to communicate?

I have two Arduinos, each with a network shield. What is the quickest and simplest way to connect a cat5 cable between these two Arduinos and have them exchange strings?