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Questions tagged [wireless]

Wireless refers to the technology allowing the transfer of information between two points that are not physically connected.

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24 views

How to send data to PC/app from sensors connected to Arduino

I want to send data in real-time from the sensors connected to my Arduino project to my PC or Android app. I would like see any real-time changes detected by the sensors as a graph on the PC or inside ...
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0answers
35 views

Ultra Long Range (200-500km) Arduino Communication using a Gibson Girl

I came across this article on Hackaday showing a simple AM transmitter sending a morse code tone 700km! I'm looking into a EPIRB for myself while deep in the bush / outback hunting or camping, just ...
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0answers
29 views

nRF52832 RadioHead library, and Nordic Enhanced Shockburst

I am working with the nRF52832 and need to prototype some radio functionality using nordic's proprietary enhanced shockburst protocol (which they call ESB) - I've worked with the nRF24 quite a bit and ...
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1answer
31 views

nRF24L01+ Unable to set address

I'm trying to communicate between Arduino Nano and Arduino Uno using nRF24L01+. I tried using RF24 by ManiacBug and TMRH20, but when I open the serial monitor after uploading the Example Programs ...
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0answers
44 views

How to achieve active 4G LTE communication?

I'm not sure if this is correct place to post this, if not PLEASE redirect me to the proper page, as this matter is quite pressing to me. My entire day was spent researching different methods of ...
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2answers
73 views

nRF24L01 - leaves out end characters during transmission

This is my Master's code. #include <nRF24L01.h> #include <RF24.h> #include <RF24_config.h> #include <SPI.h> RF24 radio(7, 8); const byte address[6] = "00001"; char text[20] =...
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0answers
44 views

NRFlite Question

I'm trying to use NRFlite library to facilitate a simple wireless remote incorporating a 3x4 keypad and nRF24L01 modules. I have it all working well except for one programming puzzle. All of the ...
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0answers
49 views

Trying to communicate data received with nRF24L01 module to API using ESP8266 in arduino UNO

I have been trying to push data into my API from Arduino UNO with ESP8266. The device connects to WiFi but fails in performing the data push after acquiring from remote sensor node with the nRF24L01 ...
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1answer
38 views

Lowest latency triggering multiple Arduinos using NRF24L01+

I'm building a rig with multiple DSLR cameras. I need to synchronize the cameras to take a photos with lowest possible latency. The only constraint is we want the ability to address each camera ...
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1answer
51 views

Display Wireless Temperature Sensor data to Web page by using Serial communication

I am reading from wireless temperature sensor with help of gateway receiver connected to Arduino UNO, using this code I need to display the data of the wireless sensor on the webpage. Any ...
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0answers
34 views

How to read .txt file from the internet wirelessly [closed]

I am a complete beginner to Arduino, so I'm asking this moreso to see if a project will be feasible. My ultimate goal is to have this arduino (whenever powered) check this website "https://services....
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1answer
54 views

How to build a wireless pump controller using arduino and esps? [closed]

I want to have automatic control for my pump, wirelessly. A transmitter unit fitted in the water tank would sense the water level and transmit the data to a receiver unit attached to the pump ...
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1answer
62 views

NRF51822 ± Arduino Uno / ATmegaXXX?

Hello I want to make a simple home automation project and I'd like to use an arduino uno for prototyping and later a atmega for deployment. I need some sort of a mesh communication method. I was ...
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1answer
36 views

Can I make the BT module disconnect with a BT module and connect with another in the code?

I am working on a project that requires a connection between two BT modules (HC-05) and a mobile phone. Later on, I encountered a problem: I can't connect two BT modules to one at the same time, So I ...
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1answer
45 views

Transmitting Electrodes Signal to Breadboard Wireless [closed]

I have recently made a DIY EEG from schematics and instructions I found online. I wanted to take the electrodes signal and transmit it wirelessly to the breadboard. According to the picture, the 2 ...
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1answer
33 views

TinyDuino radio connection

I am currently running a project with 2 TinyDuinos and 2 TinyShields 433MHz Radio (SI4432) in order to pass 3 axes (x , y ,z) from one to the other from long distance. I have tried to concat the ...
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1answer
118 views

Can I connect Multiple Devices to One 5V and one GND pin of my Arduino Uno R3

I have made a Bluetooth Controlled Robot Car. Using L298N Motor Driver, HC-05 Bluetooth Module and Arduino R3 I was able to run it by giving one "VIN" and one "GND" to L298N, one "5V" and one "GND" to ...
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3answers
76 views

nrf24l01 fried when supplying 6.5V to VIN?

I have two Arduino Unos (One clone, one genuine) and I'm trying to make a remote and a base station. Got everything working flawlessly, (Using RF24 library) and the last piece of the wiring was to get ...
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2answers
2k views

To send data perpetually from multiple clients to a server using NodeMCU?

I am working on sending data from multiple clients to a server, all of which are NodeMCUs. I have been able to send data for a single iteration. Trouble arises when I want it to send data repeatedly ...
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1answer
407 views

Sending multiple messages over the serial monitor in nodeMCU

I am trying to send multiple messages wirelessly from one ESP8266-12E NodeMCU to another. I have successfully established the connection and am able to send and receive single messages. The MAC ...
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1answer
79 views

How do I get more than 64 characters of message from serial

I am trying to make a moving message board using an Arduino Uno, HC-05 Bluetooth module and DMD board. Sending message to the DMD through the Bluetooth module can only give a not more than 62 ...
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1answer
272 views

Wireless Communication with NRF24L01+

I have decided to use NRF24L01+’s for my Arduino project for wireless communication. I am using the RF24 library by TMRh20 to talk back and forth. Github Link: https://github.com/nRF24/RF24 I want ...
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0answers
48 views

Controlling motors via accelerometer not working

I want to control the 2 servos(pan tilt) using accelerometer data value from android app. Im using nodeMCU v3, 2 servos(pan tilt) and smartphone. Connection: servos(pan tilt) is connected to 5 v ...
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0answers
96 views

Issue in transferring the serial communication data over radio using NRF24L01 and Arduino Uno

I am trying to transfer data recorded by one of my Arduino UNO boards (which is recording temperature data using DHT11) to another board that could be UNO or WeMos D1. The problem is that the UNO ...
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1answer
69 views

Does esp8266 wifi module work as both RX and TX ? [closed]

I need to know that the module can work as both transmitter and a receiver ?because I need to send an image to my phpmyadmin and after that java application do some work and need to send a signal to ...
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1answer
67 views

Communicating between two Arduinos wirelessly only works when both are connected to the same computer

The transmitter is an Arduino Mega 2560 (China) that is connected to a computer over Serial, from which it only reads data and sends it using a SYN115 433mhz transmitter. The receiver is an Arduino ...
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1answer
1k views

Send serial data to local server

I am new to arduino coding. I am reading data from serial port and storing it in char array. I want to send that data to the local server but it is not getting converted to string Code : #include &...
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0answers
738 views

How to send data generated by Arduino using ESP8266?

Basically my project consists of a simple counter that resets after a while due to certain requirements. I have the sensor hooked up and code up and running in the Arduino. What I need to do next is ...
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2answers
3k views

Arduino UNO reset using SIM800L [closed]

I'm using the SIM800L module but i've problems. I'm triying to connect it to the Elegoo UNO i've, but it restarts at all times. Also the led of signal strengh blink every second, so i dont get signal. ...
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0answers
130 views

Read the temperature of some temperature sensor in the neighbourhood

I got a new thermometer that supports an outdoor module. Despite the fact that I don't have such a module it displays an outside temperature of currently 2.6°C, which is more or less accurate for the ...
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1answer
67 views

Need to control 2 DC motors powered using arduino mini and l298n from about range of 100m [closed]

I need to control 2 DC motors which are arranged with arduino mini and L298N module from a distance of 100m wirelessly, what is the easiest and cheapest way of doing so?I checked RC controllers and ...
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1answer
22 views

Is it right to connect Serial module directly? [duplicate]

I find a strange thing that the led is on when power is off. And it's the problem of my serial module. Arduino may get power from my serial module. My serial module use max2322. I don't if it will ...
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1answer
82 views

How to do single line communication? [closed]

I want to communicate between two arduino's using one wire (sending and receiving signals - if matched, blink LED by receiver to indicate it), which are separately powered by 9v batteries. I want to ...
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1answer
683 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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3answers
80 views

I fried my arduino. Can I upload code wirelessly?

So, I'm a complete arduino newbie. I left a live wire close to my arduino and part of it burnt (underneath the USB output). The LED that indicates power still turns on when I plug it into my computer, ...
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1answer
192 views

Can Arduino post multiple sensor data to one Google Spreadsheet?

Let's say I have one MQ5 gas sensor at home and one MQ135 gas sensor at the park. They are wirelessly hooked to Arduino. My questions are: Can Arduino post the data from two or more sensors to one ...
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1answer
3k views

Unable to connect ESP8266 to WPA2+Enterprise network

I am trying to connect ESP8266 module to WPA2+Enterprise network with my ssid, username and password and the latest version supports such connection. I followed this link, and the code: #include "...
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1answer
559 views

Error while uploading code to ESP8266 through Arduino Mega 2560

I am sorry for posting this question for the nth time but I am still not able to find a solution for this error. I am trying to upload the WiFiScan(Arduino IDE example program)program code to ESP8266 ...
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2answers
386 views

Arduino with nRF24L01

I am using nRF24L01 with Arduino Nano and Mini. I feel they are very useful when we want to connect multiple Arduinos together. In market we can buy Arduino with WiFi and Bluetooth, why don't they ...
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1answer
272 views

Broadcasting parallel data from Arduino using router

I'm looking to read data from sensors using an ArduinoUNO in a greenhouse and then access the data wirelessly through a router. Hopefully through a webpage. No need for internet access, just local ...
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2answers
642 views

Very long range wireless communication between two arduinos(500-1000 KM)

I searched for very long range wireless communications between two Arduinos, but can't find solutions. I don't live in USA, In my country there are regions, where GSM does not work. I want wireless ...
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1answer
198 views

Simplest/best way to control a set of 8-10 PWM signals from a smartphone

As part of a larger project, I would like to be able to control a set of 8-10 PWM signals remotely, from a smartphone at a distance of 10 meters or more. I will probably convert the PWM signals to ...
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0answers
87 views

No Socket Available message floods serial monitor

Serial Monitor get's flooded with "No Socket Available" message. This seems to occur even before I Try to communicate with my Hue bridge through my hub port. Does anyone see why this is occurring ...
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1answer
199 views

Wireless Shield Not being detected w/ Arduino Uno R3

Wireless Shield is not being detected by arduino, not MAC address is displaying. Not sure what to try next, there is nothing noticeably wrong with the shield at first glance. Green LED under status ...
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0answers
182 views

How can I configure the RFM95 LoRa module to emit packets at only 'one' particular frequency?

I have created a LoRa gateway using a Pi3; I have used a RFM95 module for it. So, it is a single channel gateway, and I'm operating it at 868.1Mhz. But my LoRa node(also a RFM95, on an Arduino Uno), ...
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1answer
532 views

RFM95 LoRa module frequency options

I live in India, and unfortunately here the unlicensed band ranges only from 865MHz to 867M Hz. The IBM LoRa code for Arduino (as node) for RFM95 module allow you to choose between 915 Mhz and 868 Mhz ...
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1answer
196 views

Which is RX and TX pin of the HM-10 module?

i recently bought hm-10 ble module which works using cc2541 ti SOC but problem is there are many ports the the bluetooth module but the seller has not mentioned which is rx and tx pins so... I wanted ...
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0answers
782 views

CRC usage when ack disabled in nRF24L01

In the documentation of the nRF24L01 library I use (library), the CRC state (on/off) and length can be set or get. It seems to be used for auto ack, but when I switch auto ack off, what is the use of ...
3
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2answers
871 views

433 MHZ connection between two Arduino (nano,uno) fails after some time

The goal of this part of my project is to establish a wireless connection between an Arduino nano and an Arduino uno. For this I use 433 MHZ receiver and sender. The nano sends, the uno receives and ...
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0answers
273 views

Esp <--> Esp Communication

I'm aware of and currently using an MQTT network to facilitate communication between several Wemos D1 Mini's but that method obviously relies on having a MQTT broker. Is there a way to have the ESP's ...