All Questions
Tagged with arduino-pro-mini arduino-uno
22 questions
-1
votes
1
answer
60
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Arduino connect programatically two wires of external 3.3V device
What is a missing puzzle in here, relay, transistor?
I would like to pull pin of external device to the ground programatically using arduino's digital pin.
- 1
0
votes
1
answer
1k
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LED does not blink - Arduino UNO+WiFi R3 ATmega328P+ESP8266 board
As I am learning the Arduino coding, I want to see if my program can turn on the LED light. I have tried all the things, but the code does not start the LED light I have installed on the board.
The ...
1
vote
1
answer
477
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RadioHead library change the state when a new message is received
I would like to control a toy car from the server. I use RadioHead library for communication and it works fine.
The application running on the server side is as follows.
#include <...
user53266
1
vote
2
answers
1k
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Rc switch library display received values only one times using serial monitor
I use Rc switch library to transmit and receive data. It works fine.
The part that sends the data is as follows :
#include <Arduino.h>
#include <RCSwitch.h>
RCSwitch transmitter = ...
user53266
1
vote
1
answer
391
views
Why Can't I Program my Atmega168 Pro Mini?
I'm trying to program a Atmega168 Pro Mini 3.3V/8mhz I bought online. I followed a tutorial that walks through the steps of how to program a Pro Mini with an Arduino Uno. However, in their example ...
- 205
2
votes
0
answers
87
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Arduino Voltage Reading Problem
I was trying made a gear indicator for my bike, with manually sensing the gear shift. But failed, cause my bike has no separate "neutral" wire, instead there is gear sensor in-built...!! ...
- 35
0
votes
1
answer
93
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MP3 File through ARDUINO
Hey question is that it is possible to play MP3 file in arduino without changing it into .wav file if possible ,then your suggestions are welcome
Thanks
- 11
-1
votes
1
answer
1k
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Sending a string from Arduino to ESP8266 works on UNO but not on Pro Mini
I have a project where I am getting sensor data and sending it over to an ESP8266-01 to send to ThingSpeak. After some work I got it to work. So like a real smart person I decided to replace the ...
- 161
1
vote
1
answer
394
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Control solenoid valve with arduino running on battery
I built a simple setup according to this tutorial using a 9v battery (in the meantime replaced it with a 120A battery):
https://www.bc-robotics.com/tutorials/controlling-a-solenoid-valve-with-arduino/
...
- 25
3
votes
4
answers
4k
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What is the lowest resistance pot that is useful with an analog input?
Background
I've dabbled in electronics since my parents gave me a 150-in-1 kit in the 1970's but never had formal training. My dad repaired Honeywell mainframes so taught me to solder when I was 8. I ...
- 176
1
vote
1
answer
1k
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ESP8266 cannot connect to an existing network after using AT command
I followed this tutorial to connect the ESP8266 to a wifi network using AT commands. I used the below schematics (without the connection between ESP's CPIO 0 and Arduino's Ground):
After that, I was ...
- 11
3
votes
1
answer
474
views
Pushing sketches to pro mini with Uno 101
So I just bought a Pro Mini the other day, however, I didn't get an FTDI cable or a USB/Serial converter board.
From what I understand from this article I can use my Arduino Uno 101 to push sketches ...
- 131
3
votes
2
answers
2k
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Cannot move TM1637 from Uno to Pro Mini
I have a very simple setup which works fine with an Uno.
#include <SevenSegmentTM1637.h>
#include <SevenSegmentExtended.h>
const byte PIN_CLK = 2;
const byte PIN_DIO = 3;
...
- 41
1
vote
1
answer
2k
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How do I know if bootloader flash was successful?
I just bought a raw Atmega328p microcontroller. I am attempting to flash it with the Arduino bootloader.
The process seemed relatively straightforward as I had just followed the posted tutorial (...
- 243
2
votes
0
answers
191
views
Arduino Mini Pro 3.3 V Issue with Bluetooth Mate
I have an Arduino Mini Pro 3.3 V powered from a coin cell(3.6 V, CR2450) and connected to Bluetooth Mate Gold. I have checked the connections and they are fine. I can also connect to the bluetooth ...
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