Newest Questions
25,033 questions
-1
votes
1
answer
926
views
Serial communication problem with sim7600 with Arduino Mega
I am just sending the AT command to test if the serial communication works, the response I am getting is a flipped "?" or a square or rectangle symbol.
I have tested the communication using ...
1
vote
0
answers
136
views
Interface gps and ultrasonic sensor simultaneously
I am able to interface gps and the ultrasonic sensor and obtain data successfully for individual interfacing with the Arduino UNO. When I combined the code for these two, I only get the data values ...
- 21
1
vote
0
answers
251
views
Sketch works on Arduino nano but not Pro Mini
I have a simple test sketch to run for my led aquarium:
#include <IRremote.h>
#include <IRremoteInt.h>
IRsend irsend;
void setup() {
}
void loop() {
irsend.sendNEC(0xF7C03F, 32);
...
- 11
-3
votes
1
answer
121
views
Can I power Raspberry Pi 3 via 3V3 and GND pin? [closed]
Can I power my Pi 3 using the 3v3 pin (pin 1) and GND pin (pin 6)? Also, if I want to protect the board from power surges can I just put a fuse between my power supply and the 3v3 pin?
Thanks in ...
- 107
1
vote
2
answers
744
views
Measuring current directly with Arduino
Is it safe to measure current like this as long as measured voltage drop don't exceed 5V? I'm asking this because in almost all current sense circuits they used an opamp in their design.
Do I need a ...
- 814
1
vote
1
answer
223
views
What image formats are accepted for displays?
Sorry if there is information missing, im new to the topic.
I have an ESP32 connected to a Waveshare 7,5" RWB display, and i can display images by converting them to .xbm and including the hex code ...
- 125
0
votes
1
answer
57
views
Receiving two values over serial port using servos
So I have a java program that picks up the mouses x and y coords on the display and I would like to send those to my arduino and then move my two servos to those locations (I have two servos ontop of ...
0
votes
2
answers
164
views
facing issue with while loop
I'm trying to develop one code in which I'm facing issue with while loop. Once I enter any newString it enter in while loop it count till 10 times, when (n>10) then it is coming out from the while ...
-1
votes
1
answer
264
views
Sound sensor's output stucks to high values when I include a delay in the loop function
I use Waveshare's Sound Sensor module.
I use this simple code to test the module:
As you can see, the problem is that when I have a delay in the program, once the analogRead is bigger than 10 (by ...
- 33
1
vote
0
answers
523
views
fingerprint sensor r307
am using fingerprint sensor r307 on my project and when l use connection from datasheet(My circuit connection is:
(Green) TX => Pin 0 [PWM]
(White) RX => Pin 1 [PWM]
//It doesn't respond when ...
- 11
0
votes
2
answers
321
views
SoftwareSerial interfers with TVout
I'm using an Arduino uno and a Nodemcu for making a game with the phone as a WiFi controller.
The Nodemcu is the server that receives inputs from the phone connected via WiFi and sends to the Arduino ...
2
votes
2
answers
376
views
Which Datasheet applies to the ATmega328p?
While researching minimum-voltage requirements of Uno, I came across what appear to be two datasheets for the ATmega328P:
http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-7810-Automotive-...
- 199
0
votes
3
answers
90
views
Help me get my robotic car to work?
So I recently followed a tutorial on youtube and I've assembled the car and connected all the wires.
What I've done:
Car
Now in the video, when the guy connects all the wires, the wheels constantly ...
-1
votes
1
answer
359
views
send data from serial to client
I am using Arduino Yun to send data from serial to client, and it's partially working because I only get short data delivered, while long data (like more than 100Byte) get the most of them lost.
on ...
1
vote
2
answers
4k
views
Simple ESP32 MCP2515 CAN code to VP230
I have a working code that uses MCP2515 CAN module. Wanted to minimize the size of required modules, so I went with VP230 CAN transceiver and I'm having trouble relaying the same data through ...
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