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Widely used standard for connecting computers to other devices, such as printers and keyboards.

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I have faced this problem for few years ago and I solved it on Ubuntu 14.04 but I don't know why my solution doesn't work right now on Ubuntu 16.04 The Error : avrdude: ser_open(): can't open ...
Mohammed Rizqallah's user avatar
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I'm looking for two answer here. Is it possible to power a Leonardo to be always on, separate from the power from the USB host - I've tried with a full size Leonardo and a power adapter but for some ...
Danny Shepherd's user avatar
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I've searched quite a lot for this and tried to piece bits of code together but with no luck so far. All i'm looking to do is have a command I can run in terminal/bash script on the Mac trigger some ...
Danny Shepherd's user avatar
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1 answer
187 views

I am working on a project that requires a UHF reader development kit that can communicate using either RS232 or by USB. Via USB and a Serial terminal, I have been able to send commands to the reader ...
KC Ford's user avatar
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136 views

Thank you for the add, total newbie here (electronics and arduino) on his first project. Trying to make a counter for a hay baler with two HAL effect sensors, (pin 5 & 6) and outputting to an I2C ...
Lumpy's user avatar
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Hardware Dev Board: Arduino Nano V3.0 Module: RFID-RC522 13.56 MHz Cable: USB A - USB Mini B Configuration Physical Code /* * -----------------------------------------------------------------------...
voices's user avatar
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0 answers
1k views

Does anybody know how to interface an old USB webcam with the USB Host Shield 2.0 connected to an Arduino (Uno or Mega 2560 or other models - excluding Yun). I've got the USB Host Shield set up ...
Alex's user avatar
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1 answer
467 views

I know some computer USB could handle some bad connection (by blocking the port, which need to reboot the computer). But I wonder if a NodeMCU 8266 offers some protection.
JinSnow's user avatar
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753 views

So I came across a library that lets you turn your TeensyLC/3.X into an xinput device. I only have a 2.0 on hand. I spend the past few hours messing around with the LC example to see if I could hack ...
Hex Crown's user avatar
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I'm having a strange issue where in order to get the expected serial output on my serial monitor, I have to set the baud rate on my serial monitor to be 8 times higher than the rate that i set in my ...
Raiyan Sobhan's user avatar
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1 vote
3 answers
184 views

I am building an ambilight. So I bought a 3 pin LED Strip which I power with the USB hub from my TV. Next step is to connect it to the Arduino Nano. Is it OK when I only use the dataport from the ...
kerim p.'s user avatar
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This problem just started after 3 days of working on a project. I am using Arduino IDE in Windows 10. When I go to upload "Blink," everything works fine. I connect the USB (sometimes I have to ...
garson's user avatar
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Trying to build an arduino-based Mouse/Keyboard enhancer. This will let me do things like press certain keyboard or mouse shortcuts on the input side, then do something custom on the output side. ...
Mark A. Donohoe's user avatar
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I'm trying to DIY about a dozen BlinkSticks (discontinued, Adafruit) pictured here I'm thinking to use a Digispark ATTINY85 to control a single RGB LED to show the status of some program running under ...
Drakes's user avatar
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1 answer
2k views

I have three different devices, none of them gets recognized on my new Thinkpad L380 running Windows 10: Arduino Nano Clone with CH340G chip (USB2Serial) NodeMCU (Lolin V3) with CH 340G chip (...
dudenr33's user avatar
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3 votes
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I want to use the Arduino IDE serial monitor with my Digispark ATtiny85 over USB. I can without problems upload this code(Digispark CDC example): #include <DigiCDC.h> void setup() { ...
hpekristiansen's user avatar
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I am trying to install Arduino IDE in my Raspberry Pi model 3 but it is unable to locate file path. I use the following steps sudo apt-get update && sudo apt-get install arduino and in ...
varul jain's user avatar
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1 answer
263 views

Im connecting a servo to my Arduino Uno Rev.3. The general recommendation is to put a 7V -12V power supply for servos as far as I understand. However I’d like to combine it with an USB to a computer ...
Martin's user avatar
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183 views

I have rigged up a small DHT11+ESP8266 combo which I'm currently powering from the 3.3v from an Ardruino. I've ordered a 3.7v LiPo battery and have a Adafruit usb micro LiPo charger, however, the ...
Retiarius's user avatar
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1 answer
423 views

I would like my software running on Leonardo to behave differently depending on the baudrate of the USB Serial set by the PC. For example, I want to make a smart USB to UART converter which performs ...
Dmitry Grigoryev's user avatar
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2 answers
4k views

We are using an Arduino Uno R3 connected via USB to a computer. The main problem is that we can't upload any code to the board. We get this error in the Arduino IDE console: avrdude: ser_open(): ...
Chris Rivera's user avatar
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1 vote
1 answer
913 views

I want to control my Arduino with USB gamepad. I know that exists library for USB keyboard for Arduino but I don't know any library for usb gamepad. I have PS3 styled gamepad. I dont want to use ...
A. L. K.'s user avatar
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298 views

If I was to mass produce a microcontroller board I have designed based around the atmega328 (very similar to an arduino uno) but for one embedded task where I want one program only to be stored on it. ...
John_Smith's user avatar
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1 vote
1 answer
2k views

I'm fairly new to designing schematics and working with the atmega on its own and I'm designing an arduino schematic on eagle. Ive gotten to the stage where I need to incorporate a TTL USB interface ...
John_Smith's user avatar
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1 vote
2 answers
2k views

I want to wake up a PC via a USB-connected Arduino. When using a Pro Micro (Leonardo) I can do it, as its HID interface can wake up a PC. That is, in the Device Manager, under "Keyboards", the ...
MrSparkly's user avatar
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2 votes
1 answer
3k views

I've come across many Arduino shields for various boards like the Uno, ESP8266, and ESP32 which sometimes have a button for flashing and other times they do not because the flashing is automatic. ...
DemSec's user avatar
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1 answer
5k views

Objective: To get my USB keyboard to interface with an Arduino Uno board. Constraints: I can't afford a USB host shield for now for Arduino. Currently available is a keyboard with PS/2 connector. ...
deostroll's user avatar
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1 vote
2 answers
1k views

I am currently experimenting with a Digistump ATTiny85. Since it has no Serial, I use the basic DigiUSB library for communication. The RTC library used is this one: https://github.com/JChristensen/...
moestly's user avatar
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1 vote
1 answer
701 views

I have a Arduino Uno Rev3 and I would like to use a AVR development toolchain to write a program that performs serial communication over USB. Doing this using the Arduino IDE is fairly simple: void ...
Confused Programmer's user avatar
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1 vote
2 answers
4k views

I am currently doing research for a project of mine. My goal is simple: I want to pass input from a physical mouse, to a microcomputer to process the input and modify, and send the input in the form ...
James Meas's user avatar
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0 votes
2 answers
988 views

Currently trying to get a teensy 3.5 to spam a series of notes in a loop over USB and hardware serial, which I am pretty sure it can do. I have a MIDI circuit set up as per the specifications here: ...
GigaJoules's user avatar
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1 vote
1 answer
899 views

Hello, I apologise for being such a noob but can someone help with this. I am having trouble working with this. When I insert the arduino's pins into my new usb host shield , there is no indication ...
user avatar
2 votes
1 answer
196 views

I am looking to make indicator lights for my computer to indicate things such as system load, IO usage, et cetera, using an Arduino and NeoPixels. I would like to just plug it into my computer, and ...
theJack's user avatar
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1 vote
2 answers
4k views

I have an uno r3 clone in an enclosure and one of these usb ports on the enclosure. It's pretty tight in there so I was wondering if there was a way to bypass the usb port on the board and plug it in ...
jm21356's user avatar
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-2 votes
1 answer
8k views

I am trying to connect a USB camera to my NodeMCU v0.9. VCC Red +5V D- White Data D+ Green Data GND Black Ground I dismantled the USB cable ...
user1612540's user avatar
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1 vote
1 answer
295 views

I have multiple Unos and Nano and recently due to some bad configuration the USBs are not getting recognised on my Mac Air Laptop. These were working models for almost 1-2 years. I used it to control ...
Shashi Kiran's user avatar
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0 votes
3 answers
1k views

Does anyone know why Arduino calls a USB connection a serial? When I hear a serial connection I automatically think of a male pin connection and not a USB connection. Also not sure if this a Linux ...
Datalink's user avatar
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0 votes
1 answer
1k views

My project is based around the ATMEGA32u4 microcontroller. I followed the Arduino Pro Micro schematic to design my own board layout and build a custom PCB, soldered on the components. Then I used ...
MichaelT's user avatar
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-1 votes
1 answer
528 views

I would like to have an arduino board act as a human interface device that can send analog inputs like joysticks. As it currently stands I see two aproaches to this issue: Use the arduino hid library ...
8o7wer's user avatar
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1 vote
2 answers
246 views

I built a sample of my project on a breadboard using little 700mh leds and other components that easily ran off my computers usb. Now I’m building my project to full size. This includes 12 7w leds, ...
Bender's user avatar
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0 votes
1 answer
600 views

I'm trying to upload sketch to a Gizduino board (these boards have PL2303 chip for USB-to-Serial communication; other than that they are entirely similar with Arduino Uno). I have installed the ...
FartVader's user avatar
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1 vote
1 answer
1k views

I have the following sketch that runs in a arduino UNO: /* * Copyright 2018 Dimitrios Desyllas * * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and ...
Dimitrios Desyllas's user avatar
  • 363
-2 votes
1 answer
173 views

I have the signal channels of four 5v magnetic encoders connected directly to the digital pins of the arduino due. I am aware that this is not allowed according to the specification which says that ...
WhiteSpin's user avatar
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3 votes
1 answer
262 views

I have an Arduino R1 board (the very first one) and I managed to solder the resistor into Arduino's Atmega8u2 (I went to a specialist in order to do that). Then I reset atmega8u2 and by wiring the ...
Dimitrios Desyllas's user avatar
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1 vote
1 answer
335 views

I have an Anduino Uno R1 and the ATmega8U2 on. It does not respond correctly. How can I use another Arduino Uno R3 in order to reinstall the correct firmware? What I want to avoid it to solder the ...
Dimitrios Desyllas's user avatar
  • 363
1 vote
1 answer
613 views

I'm working on an emoji keyboard and it requires different input depending on the OS it's connected to. I've written the relevant methods using Arudion's default Keyboard library and can manually set ...
shachna's user avatar
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0 votes
1 answer
1k views

I know that there's already post about this, but mine is different. Instead of not recognized, it gets recognized, and I can upload codes, but after a while, windows starts to not recognize it. And ...
Flaze07's user avatar
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0 votes
2 answers
422 views

We have 200+ brand new Cisco routers that have USB console ports (but not the old RJ45 serial console ports). This is quite frustrating because the routers didn't ship with console cables and Cisco ...
TobiV's user avatar
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0 votes
1 answer
71 views

I have an Arduino Due that is connected both over native USB to PC and a 12v power supply in the Jack. Mounted on the Arduino I have a custom PCB that drives 3 motor drivers. The Motor drivers are ...
WhiteSpin's user avatar
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0 votes
1 answer
687 views

I have a few MakerBot Mightyboards running off ATmega1280 chips that can no longer use their standard USB port to connect to a computer (to make a long story short, there's a little inductor that blew ...
Nicolas Gnyra's user avatar
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