All Questions
0
votes
0answers
12 views
Programming arduino using esp8266
So , I try to make a wifi-serial bridge (at least that's what I hope I want) by following this tutorial : http://domoticx.com/esp8266-wifi-esp-link-firmware/ .
And I have an WeMos D1 R2 based on the ...
0
votes
2answers
21 views
Why adding a LED between Pin 3 and Ground causes LCD display not to show text?
For a project of mine I am programming an Arduino UNO to show information I get from some sensors on an LCD display.
As a first step I setup Arduino to show "Hello, world!" on the LCD, which worked.
...
0
votes
0answers
7 views
automatic attendance register
I wanted to make an automatic attendance system which automatically register the attendance as the students pass through a door , i intent to put a RFreceiver in the arduino and a combination of ...
1
vote
2answers
23 views
Arduino read PWM duty cycle value with input (analog / digital)
I am working on comparing autopilots like Ardupilot, CC3D, KK2.1.5. The comparision is about system reactions/behaviors that it gives during flight. For this purpose, I need to read the PWM duty cycle ...
0
votes
0answers
11 views
How to setup HC05 Module to be distinguishable
I'm not sure if this is a dumb question, but here goes 🤞 :
I am developing an android app that uses a custom Bluetooth device as a companion. I'm using an HC05 module to interface the device with my ...
0
votes
1answer
20 views
LCD displays wrong temperature
Hi I have a program that does not work right as I aspect:
v = tempC;
h = tempC * 10;
h = h % 10;
memset(stempCA, 0, sizeof(stempCA));
sprintf(stempCA, "%+.2d.%d", v, h);
it works fine on positive ...
0
votes
1answer
32 views
Why is integer-to-string not working in this sketch?
I am using a Pro Mini to read analog values and to send them via serial.
Goal of the sketch is to stream these values to Serial as fast as possible, to obtain a steady stream of at least 1000 ...
0
votes
1answer
20 views
How can I make this using arduino?
https://youtu.be/SYrulKuKmVQ
I need help in programing to make the above mentioned project on arduino.
4
votes
2answers
29 views
What does an arduino sketch translate to before compilation?
I've been experimenting with Arduino on both esp8266 and AVR chips. The structure of the .ino file usually looks like this:
#include "Arduino.h"
#include "ESP8266WiFi.h"
##Some includes
void setup()
...
0
votes
0answers
15 views
Stacking two Arduino UNO — possible?
I'm new to the whole Arduino thing and just getting started. Here's a question:
Is it possible to stack two UNOs (requires resoldering of the pins of one of them, of course) without running into minor ...
0
votes
0answers
6 views
Trouble while using Arduino DUE as programmer
I'm trying to use the arduino DUE board as a AVR Programmer. My target device is atmega328p. After uploading the ArduinoISP into the DUE Board. I've tried to let a pin toggle using the following code:...
0
votes
0answers
4 views
ESP-01 stop working after AT+IPR command. Blue led is always on
My ESP-01 has a blue led always on since I changed its baud rate with AT+IPR command. I don't understand, reading online, how to reset my module without having a serial usb adapter but using only ...
0
votes
3answers
10 views
Slowly increase speed using PWM arduino
im trying to control the speed of dc motor using PWM.
So far here is my code
int motor = 9;
int fadeValue = 5;
void setup() {
pinMode(motor, OUTPUT);
}
void loop() {
for (int fadeValue = 5 ;...
0
votes
0answers
8 views
SIM800L failed to communicate with Arduino Uno R3
Module is SIM800L. Power supply is 3.7v using a step down buck converter. I have connected SIM's TX to Arduino's D8 - Arduino receives on D8, SIM's RX to Arduino's D7 - Arduino sends through D7. There ...
0
votes
0answers
8 views
