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Questions tagged [arduino-pro-micro]

The tag has no usage guidance.

1
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1answer
19 views

How ro re-enable 32u4 USB controller after sleep mode?

I've run into quite the problem with my 32u4, I can't get it to reconnect to the computer upon wakeup from a sleep mode! So I have an Arduino Pro Micro featuring the 32u4, and I'm also designing a ...
0
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0answers
16 views

Avrdude & micro clone

I am trying to program a Pro Micro clone (black PCB, 5v), using this command avrdude.exe -p atmega32u4 -c avr109 -U flash:w:pro_micro_ISP_B6_10.hex:i -P COM3 but this is the (obviously incorrect) ...
1
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1answer
27 views

How to trigger NodeMCU sketch from Arduino Leonardo Micro Pro?

So this is probably a very simple question. I have my NodeMCU set up and working where it connects to wifi and sends a push notification. Currently it does that automatically when connected to power. ...
0
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0answers
17 views

How to use power led from arduino-pro-micro?

In my project I need 3 leds. I would like to use on-board leds if possible. I know how to use PB0 and PD5 red on-board leds, and I would like to hack the board somehow to use the green power led. If ...
0
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0answers
26 views

Can't upload sketch - avrdude: butterfly_recv(): programmer is not responding

I'm trying to upload a Blink example to run on a pro-micro (leonardo) but it is not working anymore (it was just working yesterday). Steps to reproduce: Plug the device in USB port Open Blink ...
0
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2answers
55 views

Keyboard.h: No such file or directory - Arduino pro micro (leonardo)

I've just bought a new pro-micro and I want to simulate some keyboard inputs with it, the thing is the Arduino IDE (version 2:1.0.5) can't seem to find neither HID.h or Keyboard.h libraries. The steps ...
2
votes
1answer
62 views

Digital Input using a button doesn't work properly when using it to control a relay

I'm trying to control a relay both via Bluetooth and using a switch. The problem is that, when the LED is off, I can turn it on with the switch but then if I turn off the switch the relay will stay on....
0
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1answer
43 views

Reading analog value while generating PWM signal

I'm trying to generate dim two LED strips simultaneously by generating two PWM signals based on potentionmeter value. The pot sets how bright each of the LED strips will be. To drive this I'm using ...
0
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1answer
71 views

Arduino Pro Micro bricked?

I have a Pro Micro board at which tried to upload a sketch with sparkfun's Pro Micro 3.3v processor selected. After the upload completed successfully the board did not run again and is not even ...
0
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1answer
41 views

What makes this library work exclusively with Atmega328P boards?

I've been looking into libraries that read CPPM signals that I can use on my Arduino Pro Micro, and this one looked promising (github.com/jmparatte/CPPM) until I read that it only works on Atmega328P ...
0
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1answer
40 views

Arduino Pro Micro TX and RX leds flash quikly while power drawn from VCC pin

I just got a 5V Arduino Pro Micro, which I connected to an RC RX powered from the VCC and GND pins of the board. However, whenever I do so and power on the board from a computer USB connection or a ...
1
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2answers
83 views

SD card failed to initialize [closed]

I have a Pro Micro board and I try to make it list my files as in the example of the Arduino IDE. The pins I use are the following: board micro sd module D4 ---> CS D15 ---> SCK ...
-1
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1answer
58 views

I do not know what the board is. Can someone please help

It says that it is a pro micro, but I have searched the arduino website and i cannot find something that looks like this or is called this.
0
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1answer
121 views

rotary encoder spamming output

im building my second arduino project. Im very new to this all so I could certainly use some help fixing everything. Im trying to make a controller for a pc port of an arcade game. It uses two rotary ...
0
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0answers
43 views

Weird sketch size/memory/compiler (?) related issue (hanging, RX led on)

Also posted at: https://forum.arduino.cc/index.php?topic=549672.0 is there anyone who experienced similar problem or knows a solution to it? The problem is that after uploading the code Arduino Pro ...
0
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0answers
194 views

How to check for valid Serial data, then break?

I'm having trouble completing this code for my university final project. I feel like I'm almost there, but I can't seem to find the final buttons to press. I'm using the Arduino Pro Micro. I have one ...
1
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3answers
71 views

Read one value from continuous data stream at a lower frequency

I am working on a university final project and have run into a problem with programming Arduino, after a 3 year hiatus. I have a pressure transducer that is sending pressure data at 10Hz. I have ...
0
votes
1answer
170 views

USB upload to Pro Micro (32u4)

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 ...
0
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0answers
113 views

Arduino pro micro might be bricked

I bought an Arduino pro micro (looks like this) from a Chinese seller over E-Bay, for its HID interface. I installed the Arduino software on my Linux machine (Kali Linux), and started writing a USB ...
2
votes
1answer
228 views

Pro Micro recognised as Micro (win10, IDE 1.8.1)

I just got this pro-micro clone 5V and it's my first pro micro ever. After reading lots of discussions about how easy it is to brick and how it's just a smaller Leonardo, I've also found tutorials ...
0
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0answers
120 views

MPU6050 stops work after restart again

I am using an Arduino Pro Micro with MPU6050 accelerometer sensor. Connections are: MPU6050 >> Pro Micro VCC >> 5V GND >> GND SCL >> 3 SDA >> 2 INT >> 7 I wrote code to read X, Y, and Z axes. My ...
0
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0answers
28 views

Can't find Pro Micro on my laptop

When I plug in my Arduino Pro Micro the green light turns on, but nothing happens on the laptop. I looked in the device manager, but its not there. I have tried on every USB port on my laptop and even ...
1
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1answer
428 views

Failed to initialise SD card on Leonardo

I'm trying to connect SD card reader to my Arduino. For testing i'm running CardInfo example. It seems like it runs ok when I'm running it on my Arduino UNO, but it fails to initialise SD Card while ...
3
votes
1answer
475 views

Does the Arduino pro-micro 3.3v use an 8MHz crystal or a 16MHz crystal with a clock divisor of 2?

I am trying to convert some 5v Leonardo-compatible boards to run at a lower 3-3.7v voltage, so that I can power my project using LiPo batteries. As far as I can tell, the default Leonardo settings (...
0
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1answer
48 views

MPU9250+arduino pro micro strange behaviour after reset

I have an arduino pro micro + mpu9250. For test sketch I'm using https://github.com/sparkfun/SparkFun_MPU-9250-DMP_Arduino_Library It works as intended after the first sketch upload. After that if I ...
1
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0answers
116 views

How fast an Arduino mouse would be?

I'm thinking about making a custom Arduino-based mouse and I expect not to be the first one to have the idea. Does anybody know what speed I can expect to achieve? Suppose I use a mechanical mouse as ...
0
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2answers
577 views

Arduino reads hc-05 device connecting status

Hello I want to get an arduino get status of bluetooth hc 05 if connect with device or not . I'm trying by myself and search on internet website but I can't find useful things.
0
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2answers
146 views

3.3V Pro Micro clones flashing LEDs after 1200 bps touch

I have several Pro Micro clones. This morning I uploaded a sketch into one of them (that was previously unprogrammed, so it stayed in Bootloader mode) and when I wanted to upload the sketch a second ...
0
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0answers
38 views

Pro Micro HID freezes during computer boot or resume from standby

I am using a Pro Micro as a HID touchpad, connected to a laptop running Ubuntu 17.04. Everything works, except that the board freezes or hangs while the computer boots or resumes from standby, ...
0
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0answers
145 views

Pro Micro/Leonardo : USB won't work when powered from RAW pin

I'm trying to use a Pro Micro 5v to send MIDI data to my iPhone, via USB, to control a music app. I have an Apple Camera Connection Kit (CCK) to make the connections. My iPhone sees the SparkFun board,...
0
votes
1answer
186 views

Arduino for kids toy with Battery (safe), Can Arduino overheat the Battery with long running code [closed]

I am making a learning toy which kids can play with and learn basics of programming. But i am tired of keep replacing the AA batteries as they run out in few days. So i am thinking of using ...
0
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2answers
650 views

How to dynamically allocate arrays

Question given in the title. I'm trying to dynamically allocate the size of an array on runtime on an arduino pro micro. I've tried realloc, malloc and the c++ variant delete and new without success. ...
1
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2answers
33 views

Midi Program not sending notes

I'm working on a midi device with a pro micro, it's reading as a midi device, but not outputting any notes, here's my program: const int button1 = 2; const int button2 = 3; const int ...
3
votes
2answers
250 views

How can I connect nearly 450 LEDs to an arduino without drawing too much current?

The question seems simple, but there's more to it: I'm connecting 4 74HC595 shift-registers to an arduino pro micro. 28 of the 32 outputs will be used to control LED segments of numbers. Each segment ...
1
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0answers
299 views

PS2 Keyboard and sending keystrokes between a Leonardo and several pro micros

I am working on a project where I am taking the the key presses from a PS/2 keyboard and passing them to several pro micro boards so I can type the same commands on multiple computers at the same time....
1
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0answers
588 views

Cant open serial monitor on linux

I have a pro micro and I'm running the IDE on linux. The IDE easily recognises that my board is on /dev/ttyACM0 so i can flash programs on to it. I am testing the following code void setup() { ...
0
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0answers
112 views

How to read resistive buttons with Arduino Pro Micro?

I am trying to read some resistive buttons presses on a PCB like this: This is the full sketch I am using: #include <Keyboard.h> byte ZbuttonPin = 3; void setup() { // initialize the ...
4
votes
2answers
188 views

Avoid a Pro Micro waking up a PC?

I have an Arduino Pro Micro mimicking as a HID, connected to a PC. The PC BIOS is configured to wake from keyboard events - it is switched on by hitting a key on the regular keyboard. This is a ...
0
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1answer
1k views

Cannot get HC-12 to function with Arduino Pro Micro clone

[first time usage] I'm checking this config out with a simple sketch derived from one @ https://www.allaboutcircuits.com/projects/understanding-and-implementing-the-hc-12-wireless-transceiver-module/....
1
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1answer
1k views

Why is my circuit working only when I touch it?

I have connected digital pin 2 of arduino to the circuit as shown: The problem is that the LED is not turning on normally its only turning on when I touch anything on collector side of circuit. What ...
3
votes
1answer
116 views

USB DEVICES WITH THE 32U4?

I have an Arduino Pro micro and I need to know if it is possible to use an USB device like a camera or things like that Since the processor is a 32U4. the USB Shield is for the Arduino Uno and I don't ...
0
votes
1answer
456 views

Problem using IRremote library

I am using arduino pro micro 5v 16Mhz. I have built a simple IR transmitter circuit as shown. The code i am using is https://github.com/z3t0/Arduino-IRremote/blob/master/examples/IRsendDemo/...
0
votes
1answer
1k views

Why won't my iMac recognize my Mega32u4 Arduino Pro Micro board (I've tried several cables)?

I bought this Pro Micro on eBay a while back, and I never really got around to using it. But now that I do my iMac won't recognize the board. I plug it into my iMac and open Arduino and go to the ...
1
vote
3answers
629 views

Arduino analog input protection

I've been trying to find a way to protect my analog input pins (for my Leonardo and Pro micro). I'm basically using them to read an amplified piezo sensor output. The output is amplified because I'm ...
0
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0answers
40 views

Get data from a running exe on my pc

I have made a button with an LED using an arduino micro. It's connected to my pc and when I hit the button, the LED activates and a recording on Reaper (digital audio workstation) is started. When I ...
0
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0answers
91 views

UNO/ProMicro ShiftOut doesn't work

I have a bizarre error. The shiftOut library/code stopped working. It doesn't work. There is no clock signal nor a data signal. Checked via an oscilloscope (DSO138 - I know it's cheap but it's the ...
0
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1answer
63 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 ...
0
votes
1answer
46 views

4 IR sensors on Arduino pro micro. 2 are working other aren't

#include <Keyboard.h> int IRpin = 5; int IRpin2 = 6; int IRpin3 = 8; int IRpin4 = 9; int led = 13; void setup() { Serial.begin(9600); //start the serial port Keyboard.begin(); pinMode(...
1
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0answers
165 views

I'm new here. Where to look for documentation for my specific board

sorry if this isn't the done thing. I have a little red space invader shaped board that has an arduino chip on the back from a conference. There is an LCD display and I've just got it to function ...
2
votes
2answers
269 views

RFID stops working when I place the servo

I've successfully implemented Door Unlock system described in this tutorial. At first I used Arduino Uno and RFID RC522 Reader and MG90S Micro servo. When I used Arduino Uno with Arduino Pro Micro ...