Questions tagged [arduino]

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How would I decide on the best LED intensity for TCS3200 sensor

This is for a custom project to detect fluid color and turbidity (a reduction in light passing through) using an Arduino micro, a TCS3200 sensor, and an LED. The tube sits in a custom housing, and the ...
Bilal Bahadır Akbulut's user avatar
0 votes
1 answer
41 views

Arduino pro mini 3.3v where are the digital pins 0 and 1 [closed]

I am using an Arduino Pro Mini, 3.3V, 8MHz board. Now I need to use the digital pins 0 and 1 as I have already used pins 2-12. I am not sure where the digital pins 0 and 1 are located on the board. ...
Fredi's user avatar
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43 views

College senior design problem - Arduino and prop motor [closed]

I'm making a buoy that uses an Arduino, GPS, and prop motor to hold its location. Everything works except we've developed a new issue: The prop motor wont turn on unless you cycle the power. The code ...
Matthew Doppel's user avatar
0 votes
1 answer
31 views

Why Serial output data not showing using CH9102F?

I have hardware electronics, custom designed, that use the IC CH9102F for USB to UART communications. On Arduino Studio 2.x for Windows 11 it uploads fine the firmware code however when I want to see ...
Miguel Tomás's user avatar
-1 votes
1 answer
46 views

ATmega32U4 not appearing on Windows [closed]

I have made a custom PCB that contains a ATmega32u4-AU at its core. I have assembled the board, but when I connect it to my computer I am getting no response from it anywhere on my computer. It isn't ...
Cobalt Gray's user avatar
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0 answers
23 views

How to Power 2 MG996R Tower Pro Servo

I tried powering a MG996R Tower Pro (180 deg metal gear) servo from an Arduino UNO and ended up hibernating the host PC. I want to power two such motors (in parallel configuration) for 10 minutes a ...
Aditya Jain's user avatar
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0 answers
34 views

0x7E8 and 0x7DF CAN OBD messages [closed]

I am making own OBD (DTC) data logger with Arduino, Please give some example How to Request DTC and How it responds back ...
Prateek Gupta's user avatar
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1 answer
26 views

Powering Arduino with external regulated 5V

I'm planning to create a custom Arduino Uno shield for a test jig I'm making. The shield will have an external regulated 5V source, and I'm looking to use that to power the Arduino. I've read a few ...
bdmcnamara's user avatar
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0 answers
33 views

Arduino Nano freezes at random times when motor is connected

I am to run a motor and control it with an Arduino Nano. I want to send signals to the nano with the usage of an nrf24l01. The correct use is that by default the motor will spin at a certain speed and ...
Valantis P's user avatar
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0 answers
24 views

Generating 3phase SPWM waveforms having control over the frequency from 10Hz to 800Hz

I was referring to web and I got one YouTube video similar to my project but i was not able to get output as shown in the video. I need your help how to rectify the problem. Can someone please verify ...
Rushikesh Haregaonkar's user avatar
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1 answer
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What ESC matches criteria? [closed]

Is there any ESC, that takes PWM from an Arduino as an input, has three wires for three motor phases and has three wires for the hall effect sensors? Does this match my criteria Product ?
user334991's user avatar
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1 answer
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Programmer is not responding error

I currently am running into problems with my new Arduino board. The complete details are here with log info and other troubleshooting steps https://forum.arduino.cc/t/programmer-is-not-responding-...
Jason Crosby's user avatar
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0 answers
15 views

Interfacing ADC12138 with Digital Discovery using SPI

I am trying to interface ADC12138 ADC over SPI channel to Digital Discovery to read the single ended analog voltage in the rang of 0-4V on channel 2. As described in datasheet section 1.0 Snapshot ...
Ronnie's user avatar
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0 answers
44 views

SLF3S-4000B not recognised by Arduino Uno R3

I have a Sensirion SLF3S-4000B connected to SDA/SCL lines of the Arduino uno through a logic level shifter (connected like in this example: https://learn.sparkfun.com/tutorials/retired---using-the-...
CadeO01's user avatar
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0 answers
62 views

Peltier pad issues

I am trying to make a Hot air balloon using this peltier pad connected to an arduino uno r3 by elegoo, which is powered by a duracell 9 volt battery. However, the peltier pad is not getting up to the ...
Firebender1234's user avatar
4 votes
4 answers
908 views

What is the disadvantage of using a boost converter? [closed]

I am referring to this boost converter. I want to know the disadvantage of this. It isn't possible that this could just generate free voltage, there would be some disadvantage. I actually need this ...
S.A's user avatar
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1 answer
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Should two potentiometers be powered by same source or separate?

I have two potentiometers. One measures the water in a tank up to a certain point. The second takes over after that and measures the water above the first. Currently I am powering both at the same ...
user1114881's user avatar
0 votes
2 answers
49 views

Using 7pin OLED 128x64 with iic

I just bought the 0.96” Monochrome OLED Display (SSD1306) and it claims to support both SPI and IIC/I2C with 7 pins. I want to use it with an Arduino Uno R3. How do I go about doing this and ensure ...
Aditya Jain's user avatar
0 votes
2 answers
71 views

Thermistor misreading

I'm currently working on a hotplate project with an ESP32, utilizing a 10k ohm NTC thermistor (B57550G1103F000) capable of measuring temperatures up to 300°C. However, I'm encountering issues with ...
Loic Daigle's user avatar
1 vote
2 answers
72 views

Using an LT1357CN8 to amplify the signal of a 1.5 MHz frequency generator

I am working on a frequency generator to control piezoelectric transducers. I use an Arduino Uno R4 Minima to send data to an AD9833 which creates my desired sine wave up to the required 1.5 MHz. ...
ForzenikHD's user avatar
0 votes
0 answers
24 views

ESP8266 with 1C5V Relay - always ON

Please find the circuit: I am using NodeMCU ESP8266 and 1C 5V Relay. ESP8266 board is connected to the USB port of laptop and it is powering the board. The problem is, whenever I upload the code to ...
Akhilesh B Chandran's user avatar
0 votes
1 answer
65 views

How to use one USB-C port between 2x ESP32-S3 - Switched by toggle switch?

I am trying to switch over a USB and it's associated Data +/- traces with a physical toggle switch. I've tried to work out how to do it with just the switch, but I don't think that would work as it ...
happycamper1221's user avatar
0 votes
1 answer
53 views

Arduino RPM Calculator Weird behavior

Long time user, first time poster. I've started to fiddle around with Arduinos and electronics and I still have a hard time grasping some of the basic concepts sadly. Here is my issue. I have this ...
sous's user avatar
  • 3
5 votes
3 answers
868 views

How does this debounce circuit (from Arduino Portenta Edge Control) works?

I stumbled upon this part of the schematic (page 2) of the Arduino Portenta Edge Control (shown below), which – in my eyes — seems to be a debounce circuit, but more complex than the one shown in this ...
Jerry Magnin's user avatar
0 votes
3 answers
61 views

Dimming for high power led

I've tried dimming led using driver(model jls-7265-50w) and using simple circuit with mosfet IRF540 transistor on output of driver. But this circuit didn't work well. When i decreasing pwm around pwm =...
Purevkhuu Batmunkh's user avatar
0 votes
1 answer
55 views

Transistor as a switch with square wave input [closed]

I want to construct a circuit that contains a transistor and a LED. I have a supply square wave input voltage(0-5v). Help me to construct a circuit when input is 0v ,if LED on and input is 5v then ...
YM Black's user avatar
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0 answers
46 views

STEP Motor Maximum Speed

Hello I'm struggling with getting my nema 23 step motor(3A max) to achieve maximum speeds and I'm wondering if its the algorithm or the motor driver. I'm using 24 volt power supply with TB6600 step ...
Bommersooner21's user avatar
0 votes
2 answers
64 views

How to read switch matrix with 74HC595

I would like to control the columns of a keypad with shift register. The working prototype, using direct connection is here: https://www.tinkercad.com/things/gRSmEPcnCXZ-3x3-switches-matrix I wanted ...
vilmarci's user avatar
  • 103
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1 answer
70 views

Digital Potentiometer Not Responding in Custom PWM Circuit with Arduino

I've designed a circuit to generate a smoothed PWM signal using an Arduino, which then undergoes attenuation, amplification via a non-inverting op-amp, and finally has an approximate offset of 0.9V ...
Sergio Piccione's user avatar
-1 votes
3 answers
100 views

How is the sweep of duty cycle handled in common microcontrollers? [closed]

I have designed a PWM module in Verilog, and it was giving me a glitch. After debugging it for some time, I found that the value of the duty cycle was changing twice within a certain period. How do ...
Adam01's user avatar
  • 1
2 votes
4 answers
320 views

An aspiring electriconic engineering hobbyist -- How should I go about this? [closed]

I'm a full-time maintenance technician with no University education (though I did get college credit in highschool for physics and statistics 9 years ago), and I have plenty of interests I want to ...
Joshuah Elmore's user avatar
0 votes
1 answer
54 views

Flash memory corruption possible reasons?

I am working with an external Serial Flash memory (Winbond 25Q80). I could read-erase-write the flash memory using SerialFlash library in arduino environment. But it seems data of flash memory gets ...
Shekhar Saha's user avatar
0 votes
1 answer
76 views

Running TMC2240 Stepper Motor Driver with Arduino?

I am attempting to run a Nema 17 stepper motor with the BigTreeTech TMC2240 stepper motor driver. I am connecting to the driver module with an Arduino UNO R3 board, and I'm using Arduino IDE v2.3.0. ...
Runsva's user avatar
  • 177
1 vote
1 answer
63 views

How supply an outdoor string light with 10 LED bulbs 0.8W?

I currently have a outdoor string light with 10 LED bulbs 0.8W powered by a 3.7V lithium battery and recharged by a solar panel (5.5V 295mA). Over time the battery discharges and no longer works. I've ...
Thom's user avatar
  • 11
2 votes
2 answers
916 views

IRF630N MOSFET burns after a couple of times in use [closed]

I made a simple circuit using an IRF630N to drive my loud buzzer. The Arduino code is very simple, just high and low on the pin for a fraction of time. Following is the schematic of the circuit After ...
Hamid s k's user avatar
  • 343
0 votes
1 answer
35 views

How to power an audio-level meter / VU meter in a midi-controller project?

I'm building an Arduino-based midi fader controller, and want to also add an audio VU / Level Meter to the enclosure. The Arduino is USB-powered. I bought a standalone audio level meter on AliExpress, ...
jimj31's user avatar
  • 1
0 votes
0 answers
33 views

How do I set up the wiring for a SPX-18572 and Arduino Leonardo to use LoRa?

I was trying to find a guide to use the SparkX LoRa SPX-18572 with an Arduino Leonardo, but I could not find any guides to using these technologies online. I'm hoping someone on here knows how to use ...
Vishnu Sharma's user avatar
0 votes
1 answer
46 views

SSD1306 128x32 OLED change I2C address

Hey all I've been looking for any information that would allow me to change the I2C address for the 0.91" OLED 128x32 module: So far I have only found mention of the I2c address change here but ...
StealthRT's user avatar
  • 743
0 votes
0 answers
39 views

How to measure frequency of aperiodic signal in simulink when you are getting that signal through arduino?

Actually i want to measure frequency of a signal that i am getting thorugh arduino . I am getting almost correct voltage value near 220V that is value of our national grid and frequency in our ...
Engr's user avatar
  • 3
0 votes
3 answers
99 views

Capacitor can't filter the AC detector spikes

I made a simple design to read the status of an 220 V AC relay. I used a diode and resistor to drop the voltage for the PC817 optocoupler and used a capacitor to filter spikes: This is the test ...
Hamid s k's user avatar
  • 343
1 vote
0 answers
54 views

ledcWriteTone leaking to other pin?

I've recently written a program that involves two blinking LEDs. I have these LEDs wired straight from the pins into GND. One is set to blink on and off on one second intervals, and the other is fed a ...
Colby Johnson's user avatar
0 votes
0 answers
67 views

Remote controlled motor for quadcopter does not slow down when signal is sent

I am trying to build a quadcopter with an Arduino Nano. The controller consists of a Arduino Uno with a joystick and an NRF24L01 (transmitter). The quadcopter is made of an Arduino Nano, a NRF24L01 (...
Valantis P's user avatar
0 votes
1 answer
63 views

ATTiny85 won't reprogram

I am using a tiny AVR programmer to program code specifically this one, https://www.amazon.com/dp/B00B6KNJRY?psc=1&ref=ppx_yo2ov_dt_b_product_details , I can successfully upload code onto a blank ...
Ash Ketchup's user avatar
1 vote
0 answers
36 views

esp8266 (ESP-07S) draws 100 micro amps in deep sleep instead of 20 as documented

I have a quite simple circuit using ESP-07S module (esp8266 chip, no USB, no LEDs). The device, after performing some operations enters deep sleep and waits for a button connected to RST to wake up (...
PanJanek's user avatar
  • 279
0 votes
0 answers
42 views

L298 H-bridge: there is voltage, but it disappears once motor is connected

I'm trying to drive a DC motor in different directions with the help of L298 H-bridge (multiwatt vertical package) and an Arduino. I can measure how voltage changes from -5V to +5V, give or take, ...
olegst's user avatar
  • 121
0 votes
1 answer
40 views

Resolving CAN Communication Issue: Decoding and Fixing 'BUSPASSIVE BUSWARNING'

I set up a communication system (J1939) using two MCP2515 modules connected to two Arduino UNO boards. Then, I added a PCAN USB interface to monitor messages using PCAN View Software. Everything was ...
Rupesh Verma's user avatar
0 votes
1 answer
22 views

connecting sensirion SLF3S-4000B flow sensors to arduino uno r3 via I2C bus

I bought the following sensors for my project: https://www.farnell.com/datasheets/3730435.pdf I am using two and they operate on 3.3V logic. They use a standard 6 pin picoblade 150mm connection. I am ...
CadeO01's user avatar
0 votes
0 answers
26 views

Switch setup to power on/off PC

I have a project which contains a PC connected to an Arduino R4. The PC is enclosed in a cabinet and I can't open it (easily) to power it on. Normally I would run a remote wire to the button to power-...
ElectroRag's user avatar
0 votes
4 answers
140 views

Relays vs transistors [closed]

I am still very fresh when it comes to circuits. This is a circuit that controls both an irrigation system and a solar tracking system. I have seen many circuits similar to mine where they would use a ...
Rawan Mohamed's user avatar
0 votes
2 answers
86 views

How can I get more current out of my Arduino Nano 33 IoT? [closed]

I'm currently using an Arduino Nano 33 IoT and would be powering 18 transistors - one digital pin to 1 transistor and with the use of the SDA and SCL pin to connect to 3 other I2C devices. I have run ...
Arduino Rookie's user avatar

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