Arduino Stack Exchange Community Digest

Top new questions this week:

Arduino IDE for ESP32: Compilation Error: Exist status 255

Problem: I have a ESP32 and I’ve been trying to flash it with the Arduino IDE, however it’s been giving me Python error messages :/ when I’m trying C/C++ code to flash the Arduino. Question: How can I …

arduino-ide esp32

asked by 3kstc Score of 2

Using MFRC522 along with other inputs(Bluetooth, keypad)

I’m making a little parking lot, which includes mostly opening a servo motor using either keypad, bluetooth(hc-05) and freshly added, Rfid(RC522) I cant get inputs from other sources if i want to get …

arduino-mega rfid

asked by Barzy Score of 1 answered by chrisl Score of 0

How to use reset pin as I/O pin with ATtiny44

I am using the Arduino IDE as an ISP programmer to program my ATtiny44 IC. Unfortunately, I ran out of pins, so I want to use the reset pin as I/O. I read several articles online that says it is …

input reset programmer arduinoisp

asked by electro_nooobbbb Score of 1 answered by the busybee Score of 0

Can't Send Text Messages Using TinyGSM Module, but it works if I do it manually using the ESP-IDF Environment – Sim7600

I am using the following device: www.aliexpress.com/item/1005003152097545.html?spm=a2g0o.order_list.order_list_main.119.222218028PapM6 I am trying to make an IoT sound-measurer which will send …

esp32 gsm espressif mkr-gsm-1400

asked by BurgerMan Score of 1

Greatest hits from previous weeks:

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

asked by JVarhol Score of 40 answered by Peter Bloomfield Score of 27

Is there a way to play sounds from an Arduino without using a sound shield?

I would like to play a wav file (spoken words) from my Arduino. I do not want to add a sound shield. Is there a way to play a sound through an output pin? The quality does not have to be great.

analogwrite digital sound digital-analog-conversion

asked by Hoytman Score of 14 answered by linhartr22 Score of 7

Can I measure velocity from an accelerometer? How accurately?

I’ve bought this module Kootek GY-521 MPU-6050 MPU6050 Module 3 Axis analog gyro sensors+ 3 Axis Accelerometer Module My project will involve affixing this to a moving object, moving at velocities …

arduino-uno bluetooth accelerometer

asked by James Wierzba Score of 7

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

asked by Facorazza Score of 18 answered by Majenko Score of 29

When using Arduino Uno as ISP does “Yikes! Invalid device signature” mean a bad connection, bad config, or bad version of avrdude?

I’m using an Arduino UNO to program a pre-compiled hex image to an ATTINY45, using the avrdude in the Arduino IDE directory, on Windows 7. The Uno has the ISP sketch loaded from the examples directory …

attiny avrdude isp arduinoisp

asked by Yary Score of 15

Combining code for multiple sensors in one program

I need to operate 2 different sensors (gas and temp) simultaneously. I have managed to run each one of them separately and I don’t know how to manipulate the code so they could work together. My …

programming sensors

asked by SHR Score of 2 answered by Vasil Kalchev Score of 5

Does the Node MCU v3 (LoLin) not have a builtin led?

Trying a simple led blinking program I could not get the builtin led on a LoLin Node MCU v3 working. The LED_BUILTIN constant is set to pin 16 / GPIO16 / D0. Reading several articles and QA I think …

nodemcu

asked by Jan H Score of 16 answered by Xenospark Score of 31