Questions tagged [arduino]

Arduino is an open-source electronics prototyping platform based on easy-to-use hardware and software. Questions should relate to programming Arduinos only (as in contain code). General Arduino questions may be asked on https://arduino.stackexchange.com

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Is there a way to upload arduino code via either a website or app?

I am attempting to use a 16x32 RGB LED panel with the arduino uno R3, utilising the programming for text and vectors. The programming is in different code sections and I am unable to combine them ...
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Arduino MEGA: Using Software Serial to get GPS and IMU working together

I've gotten my IMU (Adafruit Precision NXP 9-DOF Breakout Board - FXOS8700 + FXAS21002) and GPS (Ultimate Breakout v3) devices working separately, and now I'm trying to get them to work together, ...
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println converting strings to integers, not compiling ints over 10 digits

I'm trying to work with electron to send values to google cloud. However, I've been running into issues regarding some strings changing and tried to use serial to print the values and locate where the ...
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How to emit MHz Frequncy in python [on hold]

I am trying to emit mhz frequency on a specified frequency (As I would change it as I test) I am aware that the arduino operates at 433 Mhz, but lets say I want to emit on 104 Mhz? I am familiar with ...
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1answer
15 views

Dimensions (X,Y,Z) measurement of a package using Arduino and its sensors?

I need to create a device to get the dimensions and weight of packages.We are planing to mount a steel desk and accomplish sensors to that desk, we need a very simple setup that does not need ...
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How to graph data received over time from an arduino using Jfreechart

I have four pressure sensors hooked up through a serial port connection (using jSerialComm for communication) to an Arduino Uno board, and then to PC. I want to be able to graph the four readings in ...
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10 views

Arduino LORA Send and Receive Data

I tried to allow sending and receiving data using 2 Arduino Unos, 2 LORA chips (SX1278 433MHz), 2 antennas and 2 Arduino IDE. Problem is with the receiving data command. This is the code for ...
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Raspberry pi 3 NRF24L01 ECG signal

I m using arduino to mesur ECG signal and send it for a raspberry pi 3 by NRF24L01, the sampling frequence of ECG is 200hz, so for sending 200 samples in one seconde by NRF, we must segment the signal ...
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How to fix the error “Response code 0” to get “Response code 202” to bulk update a ThingSpeak channel?

I am using this example: (https://www.mathworks.com/help/thingspeak/continuously-collect-data-and-bulk-update-a-thingspeak-channel-using-an-arduino-mkr1000-board-or-an-esp8266-board.html).According ...
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1answer
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Arduino Error: cannot convert 'String' to 'char*' for argument '1' to 'char* strtok(char*, const char*)'

I'm working on an arduino assignment that splits an incoming string and puts the terms of the string in 6 different variables( a sample input string when split up has 6 terms). i have the following ...
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LoRa Server rf95.available() method returns false

I'm trying to send basic information with LoRa(rf95) one Arduino to another. I have followed https://www.smart-prototyping.com/blog/Sending-and-Receiving-Weather-Data-with-a-LoRa-Moduleenter link ...
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Python NRF24 convert Payload

since some days I try to connect an Arduino with a Raspberry by an NRF24 module.By the examples i got some working code in C (@raspberry) but I want to use python due to the web app. The problem is ...
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1answer
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at command not responding on sim800L and arduino uno

I would like to ask around SIM800L EVB module to sending message using Arduino UNO R3 DIP/SMD CH340. i change the pin tx/rx from 2, 3 vice versa, 7,8 the result either not displaying anything or ...
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9 views

Arduino SD card can't read non-stop [on hold]

I'm reading SD card data as shown below, however when i'm usingwhile(myFile.available()){/*read data a to c*/}It only loop 25times, which i want to loop for non-stop. Is there anyway i can set ...
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15 views

Arduino Reading constantly from a txt updating file

I was wondering if any of you could help me by solving this problem that I have no idea how to fix. I am trying to create a project that could read txt file using an arduino. Arduino is using ...

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