Questions tagged [arduino]
Be sure to use the Arduino Stack Exchange for questions that are more Arduino and less electronics.
8,973
questions
0
votes
0
answers
31
views
BLE Problem in Custom Board with SAMD21 and NINA-W102
I designed a custom PCB based on the Arduino Nano 33 IOT using a SAMD21 and NINA-W102 multi-radio module, but I have had some problems getting the Bluetooth signal to be reliable. After the firmware ...
- 61
0
votes
1
answer
56
views
KiCad - error while building a circuit with Arduino controlling a stepper motors using XT60 connector
I am learning KiCad, and I am getting this error while building a circuit with Arduino, which control stepper motors using XT60 connector, buck converter:
4
votes
2
answers
233
views
Optoisolated and level-shifted Esp32 Input
I'm trying to read a NFC reader's output with an Arduino Nano ESP32 through Wiegand protocol.
Basically, the Wiegand protocol transmit the binary code with two pins: D0 (for the zeroes digits) and D1 (...
- 41
1
vote
3
answers
62
views
Help with circuit analysis - Transistor, dc-motor, arduino, resistors
currently I am trying to improve my skills in electric circuits by small hobby project. I want to spin one mini dc motor, which is just spinning if the Arduino activates the flow of current with a NPN ...
- 13
0
votes
1
answer
35
views
Using a Relay to control an irrigation valve solenoid
I'm using a JQC-FC3VDC relay. I control it from a microscontroller using a 3.3V signal through an opto-link. And the business end of the relay controls a 24VAC output which then activates the ...
- 131
1
vote
1
answer
56
views
Help identifying I2C sensor from Propel Star Wars Drone
I have a sensor from a Propel Star Wars drone that I can't identify. The metal part of the sensor is marked with "A6103 040". I have tried various libraries and sensors, including BME280, ...
- 13
-1
votes
1
answer
30
views
RMS current measurements using Arduino uno [closed]
I'm working on an energy monitor using Arduino uno board. I'm using the open energy monitor library to measure RMS current. The current is measured using a CT. While observing the current measured by ...
1
vote
0
answers
30
views
Cannot decode IR signals using IRRemote Library
I'm using RC5 encoding for my project.
I'm sending signals using RC5 Protocol. The transmitter is sending the signals correctly.
But on the receiver node, when I decode the signals, Library is unable ...
- 111
0
votes
0
answers
67
views
Nanogrid management PCB review
I have made some progress on the PCB for a nanogrid consisting of solar panel, wind turbine, batteries, load (not yet connected) this board monitors the current/voltage of each components and sends ...
-2
votes
0
answers
34
views
How to read position sensor values more accurately for stpper control?
I am using Feather M4 express development board with DC Motor + Stepper FeatherWing and Ethernet FeatherWing stacked on it. The idea is to read the target position from the UDP from 0 t0 360 degrees ...
- 151
0
votes
2
answers
71
views
Help understanding simple Arduino circuit from a datasheet example
I'm trying to use a water sensor in a new design, and I don't understand the example circuit that is given in the datasheet, even though it looks very very simple. I must be missing something. Any ...
- 156
0
votes
2
answers
68
views
12 V relay buzzing/fast clicking sound when getting signal from Arduino UNO
I'm new to electronics but I decided I want to try and build a simple circuit to control with my Adruino UNO R3.
I want to make a relay switch on and off programmatically with my UNO.
Here is my ...
- 101
-3
votes
0
answers
53
views
which minor should i take? [closed]
I want to build simple machines that work on sensors, Arduino, signal-processing etc. (Ex: Specs for the blind that interpret what's happening around them). which minor should I choose? VLSI/robotics/...
- 1
3
votes
1
answer
82
views
DC motor stalling resets Arduino - A good thing? [closed]
I have a small DC motor that used to draw from a 3.7 V lithium battery in a small Chinese made device. I did away with the PCB to use an Arduino UNO with my own programs.
I tried using motor shields, ...
- 31
0
votes
3
answers
52
views
Esp32 controls a 12v coil relay through PC817 and 2N7000
I need to control a 12v relay with an Arduino nano ESP32.
Can somebody check if the circuit I designed is good?
Components list:
MOSFET: 2N7000 (N-channel);
Optocoupler: PC817;
Diode: 1N4007;
Relay: ...
- 41