Skip to main content
Electrical Engineering

Questions tagged [arduino]

Ask Question

Be sure to use the Arduino Stack Exchange for questions that are more Arduino and less electronics.

9,123 questions
Newest Active Bountied Unanswered
Filter by
Sorted by
Tagged with
0 votes
0 answers
58 views

So I'm working on making a variant of the 3 Phase Open Energy Monitor and a data logger based on the same. I aim to use something based on these to watch 3 phase spindles and servos on CNC machines to ...
Marc's user avatar
  • 11
3 votes
3 answers
298 views

newbie here trying to learn and create an electronics project for my uni (Comp E) My goal here is to create a DIY infrared sensor using photodiode and IR transmitter, and read the signal through a MCU ...
Pascalis Alvin Futari Ardi's user avatar
  • 39
0 votes
0 answers
51 views

I’m trying to digitally control the output voltage of an SZ-08 buck-boost converter by replacing its onboard W204 (3296) CV trimmer with an RP2040-generated PWM signal filtered through an RC network ...
Will Buckneer's user avatar
  • 59
-3 votes
0 answers
30 views

I get error when i try to switch from sim1 to sim2 via "AT+SWITCHSIM=1" command @ SIM7672SA How can I fix this, or does the firmware not support dual SIM despite the hardware doing so?
محمد فريد's user avatar
  • 1
0 votes
0 answers
27 views

With respect to an Arduino UNO. Can I operate a 5 volt RC servo that draws between 2.1 to 2.7 amps?
Tony Tee's user avatar
  • 1
-1 votes
1 answer
36 views

I am trying to use the talkie library on Arduino Uno to output to a speaker. The talkie output is by default a PWM signal. I tested it with a piezo speaker and it works but it is weak. How can I ...
Finn Hassing's user avatar
  • 1
0 votes
1 answer
116 views

I have a PCB with UPD8872 CCD sensor that I took from an old scanner. I managed to solder the pins of the board to Arduino compatible wires and programmed the Arduino and, also, wrote desktop app that ...
Стебан's user avatar
  • 35
1 vote
1 answer
103 views

This is a question following this one: What is the best way to stack another switch? I want to stack an electronic switch over a mechanical switch, and have it driven by a microcontroller (arduino ...
Soleil's user avatar
  • 211
0 votes
0 answers
63 views

I'm doing a senior design project for my Computer Engineering bachelor's degree and I'm running into issues getting consistant movement with my two NEMA 17 Stepper motors. I'm in the process of making ...
measter219's user avatar
  • 9
2 votes
1 answer
101 views

I want to use a linear CCD-sensor for my project and I bought this old tablet scanner from 2004 - Genius ColorPage-HR7XE. I disassembled all the parts and took out the PCB with CCD-scanner. But I didn'...
Стебан's user avatar
  • 35
0 votes
1 answer
80 views

I'm looking at a tutorial ( https://www.teamxnl.com/how-to-flash-an-attiny-25-45-or-85-with-arduino/ ) and I'm confused about one of the pin connections illustrated. I've read that, for the 85, Pin1/...
BirdsInMyBrain's user avatar
  • 99
0 votes
0 answers
50 views

I am VERY new to electronics, but I love this world. My first project is to read CAN bus data from my 2008 Ford Taurus. I got a MCP2515 CAN Bus Module with a TJA1050 Receiver, and an Arduino. I hooked ...
GinTora's user avatar
  • 1
3 votes
2 answers
176 views

I'm currently using a MOSFET IRFZ44N to feed a motor using a PWM signal that comes from my Arduino Uno board. These are the connections that i have made: Being the 50 ohms resistance the equivalent of ...
Vamir's user avatar
  • 69
0 votes
2 answers
91 views

I am having an issue with a servo motor controlled by a NodeMCU and switched via an N-MOSFET (IRLB8721) on a breadboard. The servo is powered by 8.4V (from 12V/5A PSU via step-down). MOSFET gate ...
Luca Hofmann's user avatar
  • 131
1 vote
0 answers
69 views

I am currently doing a PID controller project to try and control a heating pad. I was following this tutorial and everything seems to work except for the heater control portion of the project. https://...
Dipson Aryal's user avatar
  • 11
-1 votes
2 answers
87 views

So first of all, I don't have a background in electrical engineering, I got handed a project where having some automation would save so much of my time so now I am learning electronics from scratch. I ...
Stephanie Dang's user avatar
  • 1
0 votes
0 answers
39 views

I am using a nRF52840 along with a LTC3588-1 dev board. My goal is to activate BLE only when the PGOOD signal of the LTC is high, otherwise the nRF goes into deep sleep. However, when the nRF goes ...
A Burial At Ornans's user avatar
  • 53
3 votes
3 answers
168 views

I am generating a square wave using a CMOS chip running at 12 volts, the time period is 10us, I can see the square wave is perfect on the scope. Now when the square wave is sent to ESP32 using a ...
wonderfuliot's user avatar
  • 315
1 vote
2 answers
124 views

For context; The goal of the circuit is running very high gear ratio (slow) motor between two limit switches. I will amend this post with code if relevant. The primary feature adding complexity is the ...
eemoob's user avatar
  • 73
0 votes
1 answer
103 views

This is the electrical schematic of the circuit that provides 3.3V on the Arduino UNO board: My question is: What is the purpose of the circuit? Here is what I understand: RN1A and RN1B divide Vin by ...
Bram Fran's user avatar
  • 39
-2 votes
4 answers
159 views

I’m working on a small robotics project and trying to control DC motors. I’ve come across terms like PWM motor control and H-bridge circuits, but I’m a bit confused. From what I understand, PWM is ...
Ednexllc global's user avatar
  • 1
-1 votes
1 answer
123 views

I have a active buzzer and a PIR motion sensor and an Arduino board. While I try to achieve, when there is motion then a buzzer to make the beep sound and between each motion to be a delay. But the ...
Alsiro Mira's user avatar
  • 1
3 votes
3 answers
514 views

I am using an Arduino Micro (ATMega32u4) to receive analog input value from a sensor. I know the analog pins read 0-5V, but my sensor outputs 4-20mA. The sensor is also a 12V sensor. Is it as simple ...
Geoweil's user avatar
  • 51
-1 votes
4 answers
143 views

I'm trying to reproduce the AMT72 of Humans Since 1982. I have 18 modules, each module has 1 Arduino Nano, 4 BKA30D-R5C Stepper Motor, 8 DRV5032 Hall Effect Sensor, 2 AX1201728SG Quad-Driver, each ...
Josias FOKAM's user avatar
  • 1
-1 votes
1 answer
154 views

I'm currently working on a Arduino controller that sends data to an API. One of the values I need is the surface temperature of a carrot, preferably a large distance away, approx. 2..3 metres. EDIT: ...
FrancoisBee's user avatar
  • 11
1 vote
1 answer
106 views

I have an existing design for a wireless fireworks firing system (remote and field module) that use RFM69HCW packet radio(s) @ 915MHz to transmit wireless commands to each other. I recently upgraded ...
Fabian Butkovich's user avatar
  • 31
2 votes
2 answers
386 views

I suspect this question will be trivial for many of you, but I haven't been able to find any answer online that satisfies my curiosity. I have an ACTIVE LOW relay module that connects to a GPIO [...
digitale's user avatar
  • 315
1 vote
4 answers
151 views

I am trying to send data to a Colorado Time Systems scoreboard from an Arduino Uno r3. The scoreboard uses +-12v RS232, 9600 Baud, 8 data bits, 1 stop bit, even parity. The resistance of the ...
Sean Killian's user avatar
  • 19
1 vote
1 answer
72 views

I would like to detect if my DRC-40A is supplied by mains (220v AC) with an arduino nano esp32. I thinked in this two options: Is it better A o B? I also want to keep safe the Arduino's 3.3V. The ...
PaoloRos's user avatar
  • 141
-1 votes
1 answer
99 views

I am trying to create electrical stimulator for myoblast cell culture in my lab. I am trying to do this with just 12V adapter (SMPS), Arduino, and some simple op-amp circuit. I thought I could simply ...
Min Kim's user avatar
  • 3
3 votes
1 answer
353 views

Below is my schematic I have for the LM4040DBZ-3. I wanted to use this voltage reference as a stable supply voltage for my ADC MCP3208, but I am not getting the expected 3.0V (I am getting about 2.984 ...
no_360scope's user avatar
  • 61
3 votes
2 answers
239 views

I am looking at this schematic from Nuts and Volts of a semi-auto ranging capacitance meter, which I will eventually hook up to an Arduino or some other microcontroller. Its range is 0.1F–0.01µF, but ...
Eigenvlad's user avatar
  • 131
0 votes
0 answers
72 views

I wanted to build a small outdoor light for my home, that would use a latching relay controlled by microcontroller to power the external diode. The idea was to have a schedule when this thing is ...
Oleg Tarasenko's user avatar
  • 163
0 votes
0 answers
106 views

I'm having trouble getting an RFID RC522 module to work with my M5 Stick Plus 2 (ESP32). The module shows no response at all - no tag detection, no errors. My setup: M5 Stick Plus 2 (ESP32) RFID-...
User678193901's user avatar
  • 11
0 votes
1 answer
102 views

I'm hoping someone could help me out with this one final issue with my project. I have an ESP32 that controls a magnetic starter. The issue is when the magnetic starter hits the off switch, the esp32 ...
Neel's user avatar
  • 33
2 votes
2 answers
117 views

I'm using an Arduino Uno and a WS2812B LED strip powered from separate USB ports on the same wall charger (shared ground). The strip glitches (random colors, flickering) as soon as I connect the data ...
scorpio1441's user avatar
  • 131
7 votes
4 answers
1k views

Say I buy an Arduino UNO R3. The specifications state that it is rated for a recommendation of 7-12V and that the limit is from 6-20V. What differentiates these two and how did they come up with those ...
SnappyRiffs's user avatar
  • 1,422
1 vote
0 answers
60 views

I'm trying to get an AD5933 Impedance Converter module (connected via I2C) to work with a Raspberry Pi, but I'm consistently running into an issue where the chip reports an Over-range/Saturation error ...
David Akerele's user avatar
  • 21
0 votes
0 answers
99 views

I am trying to set up my raspberry pi 5 with the max30102 sensor via the i2c interface. I bought two sensors, but neither seem to work. I'm trying to rule out faulty sensors and I don't have a ...
Kaizad Wadia's user avatar
  • 1
0 votes
1 answer
68 views

I am trying to use Modbus communication between a PC Client and an arduino UNO R4 Minima server (with a Zihatek modbus shield). The Tx/Rx LEDs on the UNO and RS485 converter flash in sync and I am ...
user36093's user avatar
  • 157
4 votes
3 answers
401 views

This is my first attempt at designing a custom development board using the ATmega328p, and it’s for our final project, and will be used for our Microprocessors and Microcontroller Systems and Design ...
CPEStudent's user avatar
  • 41
1 vote
1 answer
80 views

I'm currently working on a setup where I need to read 20 OneWire sensors (DS28E17) over a 200 m long cable. So far I've successfully managed to read 8 sensors over 80 m which is crazy. In my test ...
tdoan's user avatar
  • 11
0 votes
2 answers
107 views

I need to intercept a communication between a communications board and main control board of an air handling unit. I can see in a block diagram that the wires are marked RX/TX: I am looking for ...
petr's user avatar
  • 299
6 votes
3 answers
2k views

I currently have an Arduino Nano Every connected to an Analog Discover 2 oscilloscope (1+ channel to pin 5 (one of the PWM pins) and 1- channel to GND). I'm trying to end up with a triangular wave ...
chlorine's user avatar
  • 137
1 vote
1 answer
287 views

I am currently working on a project where I need to receive DMX512 data from a standard DMX lighting controller using an STM32G030K8T6TR microcontroller. I am using the Arduino IDE with the STM32 ...
NPD Camware's user avatar
  • 11
3 votes
0 answers
209 views

I have designed a RAM PCB for a very basic 8-bit CPU project that uses an IDT 7132 2k x 8 dual port SRAM. The datasheet for the IDT7132 is here: https://www.renesas.com/en/document/dst/713242-...
David777's user avatar
  • 1,615
0 votes
2 answers
104 views

I want to make my own "Arduino" board. My requirements is that I can only use the ATMEGA328P microcontroller (found on the Uno R3 board, I know it is pretty lame, but that is what I can use, ...
SnappyRiffs's user avatar
  • 1,422
2 votes
1 answer
101 views

Basically I have and ADXL375BCCZ-RL7 https://www.lcsc.com/product-detail/Accelerometers_Analog-Devices-ADXL375BCCZ-RL7_C481898.html Connected to my RP204. When I execute a very simple code the result ...
PHG's user avatar
  • 61
2 votes
1 answer
100 views

I have a component made on top of IS31FL3731 which I try to use together with Attiny85 via I2C on Arduino. It is working fine with Wire.h and for example Arduino Micro, but for some unknown reason it ...
aambrozkiewicz's user avatar
  • 169
3 votes
3 answers
222 views

I've built a controller unit that uses an Arduino to control several 120vac outlets, using user-selected real-time off/on times. It controls the outlets via relays (driven by NPN transistors in the ...
RustyShackleford's user avatar
  • 503

1
2 3 4 5
…
183