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Why is the IDE not able to find the board despite it being clearly seen and selected?

i'm having an odd problem where despite having the correct port selected 3 times i'm still getting an error as shown below: message: Arduino: 1.8.9 (Windows 10), Board: "Adafruit Feather M0, ...
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0answers
24 views

SN74HC595 Shift Register Issue

I'm trying to use the popular SN74HC595 Shift Register, but I think something isn't right because when the bits are submitted to the register it comes out with something similar but not the same. #...
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0answers
25 views

IllegalInsctruction ESP32

My code #include <WiFi.h> #include <WebServer.h> #include "DHT.h" #define DHTTYPE DHT11 const char* ssid = "mySSID"; const char* password = "myPass"; String ptr = ""; WebServer server(...
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1answer
25 views

Sim800L Uploading issues, HTTPACTION returns 0, 302, 701

I'm using the Sim800L module and the NEO6M GPS Module in combination with an Arduino nano to create a simple tracking device. I get the data from the GPS and try to upload it to my site with some ...
0
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0answers
23 views

LCD on top of SD datalogger flickers help!

I have a problem with my 16,2 with buttons lcd shield.(LCD Keypad Shield). It is connected on top of an SD dataloger. I came to the conclusion that every time the sd shield logs data and completes the ...
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0answers
13 views

I am making bluetooth control car using uno [duplicate]

Arduino: 1.8.9 (Windows 7), Board: "Arduino/Genuino Uno" Sketch uses 2080 bytes (6%) of program storage space. Maximum is 32256 bytes. Global variables use 189 bytes (9%) of dynamic memory, leaving ...
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0answers
26 views

Error with AT+CIPSEND in ES8266 with arduino

I'm making simple web-server on esp8266 module connected to Arduino. And when +IPD,0,GET... I'm sending AT+CIPSEND=0,16. Then I write HELLOMYDEARFRIDE. It says : send 16 bytes recived. OK. But in ...
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0answers
18 views

Street race code for traffic light isn't working [duplicate]

Keep getting this code, not sure what the issue is Arduino: 1.8.8 (Windows 10), Board: "Arduino/Genuino Uno" Sketch uses 1146 bytes (3%) of program storage space. Maximum is 32256 bytes. Global ...
0
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0answers
41 views

Can´t load a program into my ESP01 using an ArduinoUno

This is my problem, I´ve been trying to load a program(any program) into mi ESP01 and because I do not have the usb adapter, I decided to use my Arduino Uno to do the work. This is my first time ...
0
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1answer
78 views

Restoring all fuse bits on AtMega328P-PU

I'm worked with Low Fuse bits in AVRDUDEPROG 3.3. Fuses was non-inverted. And by mistake I enabled SUT1 and SUT0, when SUT0 was enabled. And when I programmed avr, it shows me error that avrdude.exe: ...
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0answers
48 views

Serial monitor error message

I connected my ArduCam mini to es8266 board and opened serial monitor. Then this message appeared. It started to appear continuously. I used the code in examples "functions of ov2640". What does it ...
1
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2answers
55 views

Built-In Digital Map for Robot Driving

So, I'm creating this project for school. It's a simple robot with Arduino MEGA 2560 and basically, I create a digital map, feed it into the Arduino program and then the robot can drive. However, I've ...
0
votes
1answer
150 views

Arduino - “expected primary-expression before '.' token” Error

#include "Ultrasonic.h" #include <Wire.h> #include <LiquidCrystal_I2C.h> // Set the LCD address to 0x27 for a 16 chars and 2 line display LiquidCrystal_I2C lcd(0x27, 16, 2); void setup() ...
1
vote
1answer
561 views

'Var' does not name a type!

I don't have much experience in C++ programming. I'm getting this error 'z' does not name a type!!! which I have't seen in MATLAB or python... What's wrong??? It is so simple!!! float x=10; float ...
0
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1answer
16 views

avrdude: stk500_getsync(): not in sync: resp=0xyy … where to find the response values?

Last week I retried some of my Arduinos and one Mega was working without a problem, but two Uno's didn't work anymore. The error I got was something like: avrdude: stk500_getsync(): not in sync: resp=...
0
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1answer
121 views

Cannot upload to Robotdyn Mega 2560 PRO MINI? [duplicate]

I get this error trying to upload avrdude: stk500v2_ReceiveMessage(): timeout It is Robotdyn Mega 2560 PRO MINI and a Robotdyn CH340 which I have connected like this: I installed the CH340 drivers ...
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3answers
55 views

Not able to split string into 2 char

I am trying to split an incoming string into 2 integer values since I have to control 2 dc motors with it. The processor is node MCU and I get following error:- Com Port Reading:- WiFi connected ...
-2
votes
1answer
35 views

Use 2 DHT22 AND PASS THE DATA TO SD Error File data does not exsist

anyone can help me please to fix this error when I try to compilate says File does not exsist. It would be great if anyone can post the entirely code. Link of code below if anyone can help me please: ...
1
vote
1answer
357 views

Error: Does not name a type [closed]

I have made a class called subjects and I have then made a subject called math. I am trying to set a classroom for math but it is giving me the error 'math' doesn't name a type. Code for the class ...
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1answer
51 views

Strange values on Serial Monitor even with matched baud rate

I am using the Adafruit Flora, connected with a Max 4466 microphone sensor. When I read values from the pin numbered 12 (which is marked as a11 for analog input on the schematic of the flora) I get ...
-1
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2answers
30 views

Error compiling a sketch to class/library conversion

I'm trying to take a sketch and turn it into a class for a library I'm making, but I'm getting compile issues. This is not a duplicate as suggested. as i explain in the comment and my answer. Thank ...
0
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0answers
209 views

ESP-13 WiFi shield - “error: espcomm_upload_mem failed”

I am creating a web server with Arduino and a ESP-13 WiFi shield. The wiring is as following: Arduino UNO || ESP-13 WiFi shield 5V || .5V GND || GND TX || RX RX || ...
0
votes
1answer
357 views

Nan values in Egg Incubator

I've recently built my Arduino Incubator, which consists of a DHT22 sensor, an LCD Keypad Shield, some fans, resistors, e.t.c. I uploaded the sketch, and everything seemed fine. However, when I try ...
4
votes
2answers
331 views

How are errors (not related to syntax) managed in arduino and in the AVR architecture in general?

I was just curious about how the AVR architecture manages errors that would cause a regular desktop program to crash. I'm talking about logical errors for example math problems that are undefined. ...