Questions tagged [arduino-micro]

A microcontroller board based on the ATmega32u4 with built-in USB communication.

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9 views

How to fix why AT command gets no response from serial monitor for HC-05 Bluetooth module with Arduino Micro?

I am trying to send numeric data from master HC-05 to slave HC-05 Bluetooth module for the purpose of processing it. But I first need to pair the Bluetooth module. I have tried different tutorials and ...
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24 views

How to fix power overload when nRF24L01 connected for voice+gyro based headmouse?

For my head mouse project which is based on the voice recognition module V3.1 for left click, double click, right-click operations, I am facing a problem. I am using 433Mhz Radio Frequency one-way ...
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30 views

Arduino Micro: Followed the BlinkWithoutDelay instructions, but somehow it's not working in my code

Any help would be greatly appreciated! /* Jebediah's Launch Control System for Kerbal Space Program Alpha Build 2.00 An Open-Source Project by John Seong */ #include <Wire.h> #include &...
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21 views

How to Fix mouse cursor lag on voice & movement based head mouse in wireless setting?

For my head mouse project which is based on the voice recognition module V3.1 for left click, double click, right-click operations, I am facing a problem. I am using 433Mhz Radio Frequency one-way ...
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1answer
27 views

Arduino Micro: Button inputs are not working!

I have no clue why this is happening to me but the buttons (in this case, buttonAbort and buttonStage) are not working whatsoever. Edit: Basically the LEDs are placed right next to the button,(e.g. ...
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41 views

Arduino Micro: Why am I getting 6.00 as a result instead of 6.66?

Basically, on the TWR calculator page, when I entered 20 as the initial value and 3 as the value that comes after, I somehow get 6.00 as a result instead of 6.66 in the computeTWR() function. How can ...
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38 views

Arduino Joystick Library not Recognized by Games (Steam)

I have an Arduino Pro Micro running code that uses the Arduino joystick library to act as a gamepad. I'm just doing testing right now so there's a single button wired up and configured in the code. ...
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1answer
37 views

Arduino Micro: 69 is supposed to show up when I press 1 on the keypad, however some weird number (15 in this case) is showing up

// **I AM ALSO GETTING WEIRD CLUELESS DELAYS WHEN I PRESS BUTTONS ON THE MODE MENU** /* Jebediah's Launch Control System for Kerbal Space Program Alpha Build 0.70 An Open-Source Project by ...
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1answer
49 views

Connecting microSD reader and e-paper display to Nano at the same time?

Pretty much as the question states, I'm wondering if it's possible to connect (this: https://www.waveshare.com/7.5inch-HD-e-Paper-HAT.htm ) 7.5" e-paper display that has raspberry pi HAT and an ...
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50 views

Arduino Micro 5V Vin and 3v3 pins

I am very confused with the pins on the arduino micro. What are the 3v3, 5v, and Vin pins used for? Are they for power input, or power output, or both?
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22 views

Arduino as USB HID is slowed down when PC doesn't read events

I have an Arduino Micro that is acting as a HID device for a Linux PC. I use this call to send the HID values: HID().SendReport(1, _values, sizeof(_values)); This works in principle, but I noticed ...
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55 views

Does the MKR WIFI 1010 support the arduino mouse and keyboard controller?

I am working on a project right now that needs to connect to my computer via bluetooth and access the arduino mouse and keyboard library. In my research, I've found that only the Leonardo, Due, and ...
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40 views

HID with bidirectional communication

I want to build a gamepad HID using the Arduino Micro, and intend to use Nico’s HID library for that. But I would like to send some config info from the PC to the Arduino HID as well. Can you have a ...
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22 views

LUFA with pro micro 3.3v 8mhz not working

I am trying to flash my pro micro 3.3v from sparkfun with a Lufa project to make it act as a pokken controller, i am using this project Github Project I have modified the makefile for 8mhz and set the ...
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20 views

Turning SSD1306 back on

I am using the SSD1306 OLED display, using the code from The Robot Can Talk Everything works really well. But I failed to have a working screensaver that turns off the display, and later turns it on ...
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1answer
25 views

What does a tilde (~) mean as annotation for a data pin?

When I examine the datasheet for the Arduino Micro (couldn't find the Pro Micro on their site, btw) then I see some data pins annotated with a ~ character, and some are not. For instance, D9 has a ~ ...
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91 views

Reading Buffer from Software-Serial & Writing to Serial

My progress so far: #include <SoftwareSerial.h> SoftwareSerial ttySerial(10, 11); // RX, TX byte buffer; void setup() { // Open serial communications and wait for port to open: Serial....
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2answers
79 views

Is it possible to program Arduino in transpiled JavaScript?

Coming from JS, I find it very difficult to program Arduino in C++ (not even knowing which version or what features are supported), being bound to the loop and delay, not being able to (easily) use ...
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1answer
50 views

How to Read ADC value without Common GND ? (Possible or not !)

I want to Read external signal with the microcontroller. But the problem is that ADC does not work because the signal GND and the microcontroller are not Common, My question is, have you ...
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3answers
160 views

Unconsistent time in arduino loop

I have this code: The output looks like this: Why are there non-periodically some extremely large values? Thanks
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2answers
39 views

Cannot call function in call back for onRequest()

I am a NOOB! Trying to use the ZS-042 RTC module to retrieve the current time and send it back to the RPi over I2C. I can call the function and spool it to Serial but when I try to call the function ...
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342 views

Using digital rotary encoders for HID input using the Joystick library

I have been working on a small switch panel for flight sims, but I wanted to use the CYT1100 Digital Rotary encoders to move instruments in-game. I have the code set up to press a certain joystick ...
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69 views

Arduino Micro with HC-05: receiving data in weird encoding

I'm just starting using HC-05 Bluetooth module and having some troubles. Firstly, I connected HC-05 bluetooth module to Arduino Micro board in programming mode (with Key pulled up) and was able to ...
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500 views

STM32 as keyboard

I would like to use a STM32F105xx to build my own computer keyboard. That MCU has support to USB OTG (FS). So, I have 2 questions: Can I flash microcontroller with usb or I need a external programer? ...
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44 views

Reading port register and print

I am playing with port registers directly to improve speed on a Arduino micro. I have no problem writing them, like PORTF &= B11101111 However, when I try to read and print it, things get funny ...
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2answers
39 views

Timing taking longer than expected

This is on a custom Arduino PCB (32u4) that I am programming with a Sparkfun Pocket AVR Programmer. A different program that I was writing wasn't working the way I expected it to, so I tried the "...
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24 views

How to fetch the com port or any id I can use to upload specific program to a specific arduino? e.g. “a.ino” to arduino micro

My project is a head mouse for which I am using two arduino boards . I want to upload a specific program to a specific arduino. How can I do it? And if I need to use a pid or com port id about which ...
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37 views

MPU-6050 showing all -1s

I am following this tutorial and have an MPU-6050 connected to an Arduino Micro with the following connections VCC - 5V/3.3V GND - GND SDA - A2 SCL - A3 I'm trying to run the short example ...
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1answer
88 views

Micro is not recognised as HID device

Being a completely noob with Arduino (but not with coding though) I'm trying to create a simple buttonbox with a Micro unit. For now, I can not figure out what should I do to make my Windows 10 ...
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2answers
82 views

Arduino Micro & Thin polymer lithium batteries [closed]

Is this battery: Polymer Lithium-ion Battery Model Number: PGEB014461 https://www.powerstream.com/p/PGEB014461.pdf Producing enough energy to power the following Arduino-micro project: ...
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1answer
363 views

Software I2C - sending data

I'm trying to read a voltage in from a power supply to an Arduino Micro, then send it to an oscilloscope through an I2C (MCP4725). I would use the default pins on the Micro but I want to wire three ...
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1answer
169 views

analogRead() output oscillates even though the pin is grounded

I'm using Arduino Micro to read from 5 flex sensors and display the corresponding angles to the Serial monitor. I am currently having quite some problems with the oscillating values I am getting from ...
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22 views

Possible to live-control an Arduino microcontroller from any Linux IoT board?

I'm working on a home project that centers around a non-Arduino Ubuntu IoT board but I'd like to add an ATmega32U4 chip for USB HID. I'm thinking about using an Arduino Micro. The signals to the ...
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1answer
125 views

Help with Arduino Micro Keypress Algorithm

Greeting, first time Arduino user here. So I am using the Arduino Micro as an HID keyboard device. It accepts arbitrary input from a Node-JavaScript program I am running (so I have full freedom in in ...
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2answers
208 views

Using Pro Micro without soldering pin

I'm a total newbie. I bought a Pro Micro but I didn't know that it can't be used, if you don't solder things in his holes. I found this picture on Google: And it seems that exists those stuffs (green ...
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1answer
415 views

Send big amouts of data to PHP script via gsm module SIM800L

I'm looking for a way to get lots of sensory data from my Arduino Micro to a PHP script. My current attempt is using the following AT-commands: Sent: [AT+HTTPPARA=URL,www.example.com/newData.php?data=...
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19 views

Arduino Micro behaves unusual

For a few days I'm trying things around on my Arduino Micro. At first uploading was working just fine. Here and there you had to press the reset button. But now if I plug it in no COM-port shows up. ...
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1answer
105 views

SIM800l doesn't respond on arduino micro

I want my Arduino Micro to interact with my SIM 800 L module. But unfortunately nothing happens, may you can help me figure out where I made a mistake. Here's my wiring: Summary of my wiring: ...
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1answer
142 views

Brushed ESC won't move slowly [closed]

I'm trying to control the brushed motor in a Traxxas Slash RC car with the built-in XL5 ESC using the Servo library on Arduino. I previously had success controlling this car with a Pololu Micro ...
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1answer
68 views

Maintaining time in Arduino

I am working on development of alarm clock using Arduino. No doubt RTC will be the best but it increases the Price of the project. Also I opened a digital clock (which I purchased online) and I see ...
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1answer
411 views

Unexpected negative values from abs() function inline with analogRead

When sampling from A0 with a 0-5V signal on an arduino micro with the code below I get some negative values. int sensor = 0; sensor = abs(analogRead(A0) - 512); Values: 77 25 -74 -58 46 113 -74 102 ...
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76 views

AC dimmer not smooth dimming

I am trying to create a phase control AC dimmer. But I am not able to achieve smooth dimming. I am using this guide for the circuit: Link On the zero detection part I am able to detect its zero ...
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2answers
46 views

Emit region-neutral keyboard signals

The Keyboard API allows the Arduino boards such as the Micro or Leonardo to emit USB signals mimicking a physical keyboard. However, the signal seems to transmit key strokes and not characters which ...
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1answer
305 views

Arduino IDE can't program my Arduino Pro Micro

I have a lot of Arduino Pro Micros that I can't program through the Arduino IDE. I'm on Windows. I'm using the SparkFun Pro Micro board information downloaded from SparkFun's website. I've tried ...
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2answers
429 views

Distance measuring utilizing (1 or 2) Arduino Nano's

I would like to develop a small-distance measuring device that will be primarily used in indoor scenarios to measure a distance with cm accuracy (mm if possible). The device would be in a small form ...
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1answer
38 views

Arduino Comms disrupted, prevents program loading (catch 22)

I have written some software which, when loaded onto an Arduino Micro, blocks communications for some reason. Lets stipulate that there is something wrong with it. Using the Ardiono IDE on Windows 10,...
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2answers
67 views

Is Arduino Keyboard in Single User Mode Possible?

Has anyone had success using the keyboard functionality of any arduino in single user mode of mac computers? I would like to inject keystrokes in single user mode, and have been unsuccessful with the ...
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1answer
97 views

What is the smallest duration that can be measured using micros()? [closed]

What is the least value of time that I could measure(count) using micros()?
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1answer
853 views

Caluclate lux value from LDR

I am using an LDR (Iduino SE012) to measure light. It returns a 10-bit value of the incoming voltage and I don't know how to convert this into lux, lumen candela or any other light-intensity unit. I ...
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1answer
387 views

Use lowpower-libary and still use serial connection and other things

I managed to get the LowPower libary working on my Arduino Micro. This code works perfectly: #include <LowPower.h> void setup() { // initialize digital pin LED_BUILTIN as an output. ...