Community Digest

Top new questions this week:

How do I build and upload a C++ program without the Arduino Library or IDE?

I want to use the AVR tools directly -- no arduino-builder or arduino-cli. I would also like compilation and uploading to be fast

avr avrdude avr-gcc avr-toolchain  
user avatar asked by glibg10b Score of 2
user avatar answered by glibg10b Score of 2

How can I log data to a thumb drive?

I am working on a project where I need to log data, but I was wondering if it is possible to log that data to a thumb drive? I know that I can log data to an SD card, but I thought a thumb drive would ...

arduino-uno usb data logging  
user avatar asked by Renier Jr. Score of 1
user avatar answered by Michel Keijzers Score of 2

Can read Serial but cannot write - serial communication Arduino Mega 2560 clone

I am having issues using the following USB to UART module. I am using an Arduino 2560 clone. I have two connections with the Arduino: COM7 which consists of the given module, connected to the main ...

serial usb uart serial-data  
user avatar asked by BurgerMan Score of 1

Uploading sketch to multiple arduinos connected in series

So I'm currently working on a project where you essentially will have multiple arduinos (1 Uno, multiple Nanos) daisychained, only connected through 2 digital pins and one wire for Serial ...

serial uploading  
user avatar asked by Mikoyan Score of 1
user avatar answered by Mark Feldman Score of 4

Arduino Nano IOT33 - Using flash

I'm looking for a way to store data on flash as on ESP8266 or ESP32 using FS.h, LITTLEFS.h but it fails. Is is possible on Nano IOT33 ?

flash arduino-nano-33-iot  
user avatar asked by guyd Score of 1
user avatar answered by Michel Keijzers Score of 1

How can I clear two FastLEDs strip ws2812b separately? One strip is connected to pin 7 of UNO and other strip to pin 6 of UNO

The power supply is external. I want to clear one strip say pin 7, and meanwhile i dont want other strip say pin 6 to switch off...I use FastLED.clear(); FastLED.show(); But it clears all the led ...

arduino-mega ws2812  
user avatar asked by Dhruv Rastogi Score of 1
user avatar answered by Michel Keijzers Score of 1

NRF24L01 modules fail to stay connected. Work intermittently

I am trying to get the NRF24 Modules to work but all I get is short lived moments of when it works. I am using the transmitter to send signals to the receiver, which in turn sends a signal to the ...

arduino-nano nrf24l01+  
user avatar asked by Alen Ramic Score of 1

Greatest hits from previous weeks:

What are the AREF, IOREF, and the unlabeled pin next to IOREF on the Uno R3?

There are some pins on the Arduino which I haven't been able to find out anything about: IOREF AREF An unlabeled one next to IOREF What are they?

pins arduino-uno  
user avatar asked by tbodt Score of 32
user avatar answered by TheDoctor Score of 31

No programmers available for this board - Programming ESP32 Cam with Ardunio IDE

This is my first time working with ESP32 Cam boards. I have followed the instructions as given in this site https://technoreview85.com/how-to-program-esp-32-cam-using-arduino-uno-board/ However my IDE ...

arduino-ide esp32 programmer camera  
user avatar asked by AfiJaabb Score of 6
user avatar answered by Juraj Score of 6

Arduino Nano uploading gives error: avrdude: stk500_recv(): programmer is not responding

I have a Arduino Nano (Sainsmart) that I'm trying to upload a sketch to. Under the Arduino IDE, the device selected was Arduino Nano w/ ATmega328. However uploading the sketch gives me the error ...

programming serial uploading sketch arduino-nano  
user avatar asked by Nyxynyx Score of 35
user avatar answered by microtherion Score of 6

Clear existing array when getting new serial command

I'm starting to build my first Arduino project but I'm running into some problems with serial communication. I get serial data from the console and store it in a char array called "data". Then, when ...

serial  
user avatar asked by squeck Score of 7
user avatar answered by JRobert Score of 18

Control Speed of DC FAN Using Arduino PID Library

I want to make a circuit that control speed of DC fan Using Arduino PID Library to get thing at specific temperature. The circuit looks like this but can be changed, The dc fan motor connected to PWM ...

arduino-uno arduino-mega motor pwm pid  
user avatar asked by ANKIT JAIN Score of 4
user avatar answered by N. Overton-Katz Score of 2

Programming an Arduino using Python, rather than C/C++

I am not very skilled with the C Language and I was wondering if there is a way in which python could be used to program an Arduino. This would most likely require a different IDE in order to be able ...

programming python  
user avatar asked by JVarhol Score of 40
user avatar answered by Peter Bloomfield Score of 27

deprecated conversion from string constant to 'char*'

What does this error means? I can't solve it in any way. warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

programming arduino-ide c  
user avatar asked by Federico Corazza Score of 18
user avatar answered by Majenko Score of 29
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