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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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0answers
23 views

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

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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0answers
12 views

Error with multiple message with the RadioHead librairy

I'm using the RadioHead library to have a communication between two Arduino with an NRF24L01+ wireless module. If I send one (1) message, everything works fine. But when I try to send four (4) ...
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1answer
32 views

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

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 ...
0
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1answer
15 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
26 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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0answers
6 views

ESP-IDF : Error while compiling one of the mesh examples [closed]

I tried to compile the example program here as it is https://github.com/espressif/esp-idf/tree/0d7f2d77c2eee51dce3fa7c8430a641c65cd9719/examples/mesh/internal_communication But I get the following ...
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1answer
24 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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0answers
37 views

NRF24L01 code hangs at `radio.write();`

I am trying to send a constant integer value (222) from one Arduino Uno to another through NRF24L01 modules and print the received value on the serial monitor. The receiver code: #include <SPI.h&...
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0answers
22 views

Lora configuration across devices

I cannot find a conversion chart to understand how to configure my RFM95 correctly. For example, I am trying to get an arduino with an RFM95 module to talk to a FiPy lora module. The FiPy to another ...
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1answer
19 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
44 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
38 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 ...
0
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2answers
1k 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 ...
0
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1answer
188 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 ...
0
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1answer
71 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 ...
0
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1answer
153 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
43 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
62 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
52 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 ...
1
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1answer
62 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 ...
2
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1answer
924 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
589 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
2k 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
87 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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0answers
346 views

HC-06 not connecting

I'm trying to make an Arduino nano and a Raspberry Pi 3B communicate wirelessly via bluetooth.To this end I got a HC-06 bluetooth transceiver for the Arduino. I have a feeling the device might be ...
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1answer
49 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 ...
1
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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
71 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 ...
1
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1answer
529 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
59 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
168 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 "...
0
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1answer
397 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
299 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
217 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
492 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 ...
1
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1answer
171 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
69 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 ...
1
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1answer
149 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
155 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), ...
1
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1answer
412 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
168 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
585 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 ...
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0answers
119 views

ESP8266 is displaced from AP with more powerful devices

I am working on some product, containing ESP8266 module, running some Arduinish code. Now I am facing following issue: esp8266 can't establish TCP connection with server, if it is connected to AP, ...
2
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2answers
533 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
227 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 ...
0
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2answers
108 views

How to get Arduino to talk to two seperate motors wirelessly?

I have an Arduino Uno and I also have two Servo Motors. Say I have a room that is 15 feet wide, and I want to be able to place the Arduino in the center of the room and control two servo motors placed ...
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0answers
2k views

Can upload programs to ESP8266 with Arduino Nano but not run them

I am trying to use my Arduino Nano to program my Generic ESP-01 Module. I want to use the module to control an RGB LED Light Strip but am not having much success, only errors.... These are my ...
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0answers
400 views

Arduino Pro Mini and ESP8266 Serial to Wireless and back

Please note that previously, 2x Arduino Uno Wifi Developer Ed units were used ; hence the currrent complicated workaround. 2x Arduino, connected via USB cable to PI, which is running 2x python ...
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1answer
141 views

Incorrect data being received on RX of NRF24L01P

I am running a setup of two NRF24L01P's on homemade code where the TX sends an analog signal fed through a standard pot, and the RX simply prints out the signal. But the RX seems to be getting ...