Questions tagged [arduino-micro]

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

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2answers
103 views

Why is the T2 transistor used in Arduino Micro?

I was about to design a small custom board using ATmega32U4, replicating the Arduino Micro. I know that T1 is used to block VUSB when VIN is connected. But why T2? The gate is 5V, so it will be ...
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1answer
334 views

Which Timer can I use on the Arduino/Genuino Micro?

I'm trying to implement charlieplexing with bit angle modulation on my Arduino Micro, and for that I need to use the internal timers. Which timers of the Atmega32u4 are unused by the standard ...
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1answer
79 views

Trigger countdown with 433MHz transmission

I would like to use an arduino to read 433 MHz transmission from multiple Soil Moisture Sensors. Since I can never be sure all transmissions reach the receiver I'd like to set a countdown from the ...
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2answers
897 views

Arduino micro not recognized

I have an Arduino micro for some time and everything always worked well. Today, when I was uploading a code on this board using Arduino IDE, I accidentally started the Arduino Board update and the ...
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2answers
1k views

Stopping Serial on RX/TX pins while running Serial on USB

The Arduino/Genuino Micro has RX/TX pins and can do serial via USB. But, Arduinos Serial ties them both together, so when using Serial.begin(9600) to send messages between my PC and the Arduino, I ...
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3answers
638 views

Is there any way to use the serial port as an interruption source?

I have and sketch made for reading a temp/hum sensor once every ten seconds aprox. However, I want to introduce an interruption source to send from my keyboard a magic word to make the sensor be read ...
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0answers
835 views

Can't reset Arduino Pro Micro

I'm trying to reset an Arduino Pro Micro with a new code and it is not allowing me to. I'm using an empty sketch to upload to the pro micro but I get different error messages every time. I think the ...
3
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2answers
211 views

Arduino-based mains frequency monitor follow-up

Following my previous question, I'm getting closer to thinking about putting together this mains frequency monitor. I would just like to do a sanity check on my electronics before I order the ...
0
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1answer
174 views

Why is the SPI response mis-ordered?

I have a Raspberry Pi and an Arduino Micro. The two are connected by a SPI bus, the RPi is the master; the Arduino the slave. I need to send 5 bytes to the Arduino and get 5 bytes as an answer. The ...
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2answers
9k views

Arduino Micro vs. Pro Micro

What are the differences between the Arduino Micro and Pro Micro?
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2answers
59 views

How to program Fio v3 without MicroUSB port

I got given a Fio V3 but unfortunately the MicroUSB port is missing, not sure why. Is there any other way to program it? I'm thinking perhaps those 6 pins under the microcontroller? Also can I ...
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4answers
147 views

Can I cut the pin holes off of my Arduino board?

I'm making a project, but my arduino pro micro is just slightly too big to fit in it's case. What would happen if I cut off the pin holes that I don't need? Would it still work? Or would it be ruined?...
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1answer
536 views

Upload of sketch with avrdude stuck only outside of IDE

When uploading my sketch to my Genuino Micro with the Arduino IDE, everything works perfectly. This is the command issued: C:\Users\<user>\AppData\Local\Arduino15\packages\arduino\tools\avrdude\...
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1answer
354 views

What bootloader does the Arduino Micro come with?

I've been looking to modify the Arduino Micro bootloader (specifically changing the VendorID and ProductID) of the Arduino. What bootloader comes pre-installed on the Arduino Micro? and how would I go ...
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2answers
3k views

Arduino IDE COM Port error on Windows 10

I have an Arduino micro, uno, and mega and none of them will connect to the com port on the Arduino IDE. I went to the device manager aand it is recognized but when I try to update the driver I get ...
1
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1answer
6k views

Is the SIM800L 3G? Or is it able to connect to 3G? [closed]

I am working on SIM800L. I am using a 3G SIM with a SIM800L. I am able to send messages and call using SIM800L, but when I am using the AT+HTTPINIT command it is not working. It is giving an error ...
3
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3answers
584 views

How to have some code executed at a certain time of day with a DS3231 RTC?

I recently bought a DS3231 RTC, but I cannot seem to figure out how to get it to work. I have tried all different tutorials and example programs but I keep getting 2165.25.165 165:165:165 as the ...
4
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1answer
855 views

Arduino Uno as keyboard

I am trying to make Arduino Uno to act as a keyboard. I have successfully flashed the USB-HID firmware in it using this link also and programmed it like this. uint8_t buf[8] = { 0 }; int inpin1 = 7;...
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1answer
70 views

Why does Keyboard.Print adds random values to url?

I'm trying to print a sequence of power shell commands including a url to the powershell interpreter but every time I execute it with the Arduino Micro it adds random values to the url. Here's the ...
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2answers
4k views

Which key is KEY_LEFT_GUI?

This might be a very simple question but I don't know which key represents KEY_LEFT_GUI on my keyboard. I thought it was the windows key but when I program Arduino Micro to execute it. Run does not ...
2
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2answers
319 views

De-Auth “attacks” using Arduino? [closed]

I'm trying to use my Arduino and an ESP8266 to spam De-Auth "attacks". I am quoting attacks because I do not plan on using this for malicious or destructive purposes. I've heard that the ESP8266 ...
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1answer
1k views

How to plot YPR from MPU-6050 on Arduino IDE?

I have an MPU-6050 attached to an Arduino Micro and I'm getting the data (the YPR values) from it just fine. Since there is x,y and z what would I put to plot this information in the Arduino IDE's ...
0
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1answer
604 views

MPU-6050 + Arduino Micro + nRF24L01 FIFO overflow!

So I have an Arduino Micro, nRF24L01, and MPU-6050 all attached together and its transmitting information to another nRF24L01 on an Arduino Uno. The problem is that I keep getting FIFO overflow on the ...
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1answer
2k views

Arduino Micro “Keyboard Not Found”

This is my first script written with Arduino. I wrote a simple Hello World program but I'm getting the following error. Test:18: error: 'Keyboard' not found. Does your sketch include the line '#...
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1answer
76 views

What pin is the external interrupt #0 for an arduino micro?

I'm putting an MPU6050 on an arduino Micro but the interrupt is different than the arduino uno. The external interrupt #0 pin on an arduino uno is pin 2 but its not pin 2 on an arduino micro. So I'm ...
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0answers
322 views

Having trouble connect nrf24l01 to arduino micro and arduino uno!

I'm trying to connect a nRF24L01 with my Arduino Micro and Arduino Uno. The Arduino Uno works fine, but it doesn't talk with the Arduino Micro. CE is on pin 7 and CSN on pin 8. I posted the code down ...
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1answer
674 views

Having problems compiling this code for NRF24l01 on arduino uno and arduino micro

I have the library RF24 and everything in my arduino library but for some reason it's not compiling. I don't know why. I posted the code and also the error message that the arduin IDE keeps showing. ...
2
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1answer
529 views

What's the problem with baudrate?

I was trying to evaluate the speed of communication between pc and Arduino, using this code in Arduino: void setup() { Serial.begin(9600); } void loop() { Serial.println("Ciao Arduino"); } and ...
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0answers
269 views

GSM librarys Software Serial conflicts with I2C pins 2 and 3 for Arduino Micro

The GSM library apparently uses the Software Serial library to perform the communication. The Arduino Micro specified pins for the serial connection to the GSM is pin 2 and 3 (doc says, but see def of ...
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3answers
1k views

how to communicate MPU-6050 ( on arduino micro) wirelessly using nrf24l01 to arduino uno? [closed]

I have an Arduino Micro and MPU-6050. I'm trying to transfer the data obtained from the MPU-6050 wirelessly to my computer using an Arduino Uno at the other end. I'm not sure how to make this happen. ...
3
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3answers
703 views

Mini Voice Recorder for Arduino

I am trying to find a small voice recorder that I can use with my Arduino Micro, and I found this. It is exactly what I am looking for, but it is now a retired product. I googled ISD1932, but many ...
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1answer
2k views

Use digital pins as analog - Arduino Micro

I have an Arduino Micro and I want to use pin 6 and 8 as an analog pin, according to the manual this is possible: The Micro has a total of 12 analog inputs, pins from A0 to A5 are labelled ...
3
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4answers
3k views

How to connect an Arduino Micro to MPU-6050

So I'm trying to connect my Arduino micro to the MPU-6050. I was using this tutorial: https://diyhacking.com/arduino-mpu-6050-imu-sensor-tutorial/ This tutorial worked with my Arduino Uno but not ...
1
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1answer
543 views

Problems building an Arduino Micro with through-hole components

So I'm trying to build an Arduino Micro using a bread-board and through-hole components. I'm leaving out the voltage regulator and voltage selector (see schematic at the bottom for reference). I'm ...
1
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1answer
1k views

Arduino Micro Power Questions

I have a few questions about the Arduino Micro circuit: If I can provide a steady 5 V source (connected to +5V), then I don't need to use the voltage regulator module (including the selector) of the ...
0
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3answers
2k views

Questions about the Arduino Micro PCB

I'm planning on integrating an Arduino Micro in the circuit of a small project of mine (USB gamepad). The whole thing will use USB for power and data transfer (between the board and the computer). ...
0
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1answer
434 views

Arduino micro program not uploading

I am having trouble uploading a new program to my arduino micro. I first flashed the blink example program to the board and that worked. However now whenever I try to flash a new program it either ...
0
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1answer
445 views

External power supply?

I have a project where I'm looking to power 120 RGB LEDs in a strip (WS2812B). Obviously an Arduino Micro cannot supply this amount of current so I'm looking to use an external 5V/4A switching power ...
1
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1answer
104 views

LED bar graph script not working

I have LED bar graph on pins 2-11. Eventually I want to use a voltage divider to figure out the amount of voltage left in a power supply. Currently, this script should set the number of LEDs on the ...
0
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3answers
365 views

Listen for USB “TX signal received” response on RX [closed]

Is there a usb signal I can send on TX that will generate a response from the computer on the RX only if the computer is active/not a wall usb power supply? I'm trying to use the Remote library when a ...
1
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1answer
338 views

Arduino Micro Cannot get Interrupt 6 work on PIN 7

After finding out about the situation with pin7 from this tutorial: https://forum.sparkfun.com/viewtopic.php?f=32&t=35847 void setup(){ EICRB |= (1<<ISC60)|(0<<ISC61); // ...
3
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2answers
917 views

Driving single-character alphanumeric (16-segment) displays

I would like to drive three sixteen-segment displays (https://www.sparkfun.com/products/retired/9934) using an Arduino Micro. These displays would output an alphabetic character that a user would ...
0
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1answer
48 views

Serial.println not outputting

I ran the following really simple code on my micro and the monitor is just blank, not displaying any zeroes or anything and the Tx light isn't lighting up. I haven't used analog inputs much so I don't ...
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1answer
883 views

MPU9250 - Calibration Not Saved with RTIMULib EEPROM Issues

I'm using the MPU9250 and the RTIMULib to perform sensor fusion, however, when I run ArduinoMagCal, and save the calibration, and follow that with running the main ArduinoIMU it claims the calibration ...
0
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1answer
82 views

Can I connect a camera to an arduino mini?

I was wondering if it was possible to connect a camera like this onto an Arduino mini and have the Arduino save video and audio to a micro SD card.
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3answers
60 views

Arduino Micro Println prints 0

I am having troubles with my arduino micro. In my programming, I am using the serial. When I use println, nothing shows up in the serial monitor except for 0. So if I type 1, I get back 0 instead of 1,...
0
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1answer
328 views

I feel like an idiot, why can't I make a servo move with the boilerplate code?

So I was working on a far more grand project, until I discovered that I couldn't get any of my servos to move. I've gone back to basics, and am trying to just get the boilerplate code found here, ...
4
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2answers
2k views

Generate particular pulse using Arduino

How can I generate this pulse with an Arduino Micro? Is it necessary an external component?
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1answer
2k views

How do I power my Arduino Micro directly?

I just need some confirmation, before I break something. So far I have been powering my project from USB, no I would like to power it from a battery. The official spec claims I should use a voltage ...
0
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2answers
350 views

Driving numerous chips from 2 separate SPI connectors w/ Arduino Micro

I want to drive numerous chips (L9823, TLC5925, ADG1414, MCP23S08) from an Arduino Micro as well as read input from analog pins connected to momentary buttons, toggles, potentiometers and such. The ...