An Arduino board based on the ATmega32u4 chip with built in USB HID functionality
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2answers
16 views
Why do only specific arduinos support the keyboard and mouse libraries?
The Arduino website suggests that only three boards are supported for the Mouse and Keyboard library page:
Leonardo
Micro
Due
What is special about those boards, that the other boards in the ...
0
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0answers
16 views
Leonardo sketch and bootloader hex file combination
Can I combine Leonardo sketch hex file with the Leonardo bootloader hex file?
I would like to program blank Atmega32U4 with one shot.
0
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2answers
46 views
Disabling i2c internal pull up resistors
How do you do this? I've been digging around and I can see that I should do this and supply my own external pull up resistors but I don't know exactly how to disable them. The pages I've been reading ...
1
vote
2answers
45 views
Do I need a bubble sort or something easier?
I'm using an Arduino Leonardo and a GPSTiny++ library to parse NMEA strings from my GPS receiver. In this chunk of code I'm averaging all satellite SNR numbers for satellites which are locked (Being ...
4
votes
1answer
61 views
Remove Bootloader on Arduinos
I am trying to move from arduinos to AVR C. Would somebody know how to remove the arduino bootloader from the microcontroller? Is there a different process for the different atmega microcontrollers ...
-1
votes
1answer
83 views
Serial communication not working between two Arduinos unless connected to computer
I have a robot with an Arduino Mega that gets data from a bluetooth module and sends it to an Arduino Leonardo to activate some functions. It all works amazing but only if the boards are connected to ...
0
votes
2answers
59 views
Leonardo and micro: high pitch noise when powered from Vin
I have an issue with several Leonardo and Micro boards.
On all of my boards, there is a sawtooth of about 690mV ptp @ 4kHz on the 5V supply when powered from Vin (external power).
The frequency ...
0
votes
1answer
41 views
Analog pins all reading same value
I'm trying to read 5 analog inputs, but all the pins are reading the same as pin A0, plus or minus a couple points. I tried using pulldown resistors on all 5 pins and it made no difference. The board ...
0
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1answer
49 views
Leonardo Serial1 enable internal pull-up for removable Bluetooth module
I would like to have a serial Bluetooth module thats completely removable, leaving nothing connected to the arduino.
My code would freeze up whenever the Bluetooth module was removed. I eventually ...
0
votes
1answer
58 views
How to calculate Battery Bank SOC with Arduino?
I have a 48 Volt Lead Acid Battery Bank which have 8 Battery each of 6 Volts. The Batteries connected in series and give Total 48 Volt.
I want to calculate the Stage Of Charge (SOC) of this battery ...
0
votes
1answer
31 views
Leonardo broken?
My leonardo was working fine until today, when I plug it to my computer all led (RX/TX/L/ON) stays on (Green for on, amber for others) and my computer no longer see a com port.
(by the way, do you ...
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0answers
54 views
Programmatically Upload Arduino Sketch From Android App
I am attempting to build an Android app from which I can can upload a .hex file to my Arduino(Leonardo). I am aware of a few apps in the Google Play store that are capable of this functionality but I ...
-1
votes
1answer
27 views
What is wrong with my 32u4 breakout board from adafruit?
I recently bought the atmega 32u4 breakout board from adafruit. I uploaded a sketch, then it says that there isn't a timer 2 on it and it won't do as I programmed my sketch. how can I fix this?
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1answer
13 views
Where are the digital and analog pins for the adafruit atmega 32u4 breakout board?
Which pins are the analog and digital pins? I've been searching the internet for an hour and I could get an answer.
0
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0answers
20 views
arduino leonardo stops transmitting once hdmi cable is connected to a screen
I am using arduino leonardo for moving mouse pointer with head tracking using MPU6050. It works fine in general. But as soon as I connect an external lcd screen to my laptop via hdmi cable, it stops ...
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0answers
41 views
Clone pro micro serial port 'COM4' already in use
So I just got this board I ordered from ebay and tried to play with it for the first time. ...
0
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0answers
91 views
Starting usb on pro micro after deep sleep (ATmega32u4)
I have just started playing with a low power arduino project, and have managed to get the power drain down to about 220uA using powerDown from LowPower.
What I would love to be able to do is start ...
0
votes
0answers
113 views
TCCR1A and TCCR2A on Leonardo
I'm trying to use the TTS library for Arduino on an Arduino Micro board, which is based on the Leonardo. When I try to compile my sketch I get some errors;
/libraries/TTS/TTS.cpp: In function 'void ...
0
votes
1answer
37 views
Overriding main function in Leonardo
I've trying to write my code in plain C++ dropping out the Arduino's IDE. Although I've succeed in compiling the code, whenever I try to upload it to the board it doesn't run, seems that it stucks at ...
1
vote
2answers
154 views
Conflicts with USB and external power supply
I want to power an Arduino Leonardo with an external power supply and simultanously communicate via USB. I have read some other threads on this topic, therefore, I know that if one supplies more than ...
1
vote
3answers
180 views
How big of a difference is there between an Arduino Uno and the rest?
Lately I've been fooling around with a project for my Microsoft Sidewinder Force Feedback Pro Joystick. I've found out that there is a project currently for it built for the Teensy 2.0. On the page ...
-6
votes
1answer
290 views
STEPPER MOTOR CONTROLLER Using LEONARDO PRO MICRO
I want to Use LEONARDO PRO MICRO and A4988 Stepper Motor DRIVER to control Nema 17 Stepper Motor.
Please let me know how to hookup these together.
Please give me a circuit for this type of ...
0
votes
2answers
283 views
Send Keyboard Media Keys with Keyboard Library
I have an Arduino Pro Micro (ATMega32u4) that I want to use as an IR receiver for a media PC and need to send codes like Volume Up, Media Home, Play, etc. But when I look up the scan codes for those ...
2
votes
1answer
100 views
Interfacing Arduino Leonardo with PCA8574AN
I'm trying to interface my Leonardo with a "Mindsensors Magic Wand" - 8 LEDs connected to a PCA8574AN chip.
On the manufacturer's page, they say it's compatible with Arduino, however no instructions ...
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0answers
161 views
Matlab to Arduino communication
I am doing some computations on Matlab and I need to send those values to an Arduino Leonardo through USB serial connection. I need to send 2 variables which can vary from -400 to +400. I'm saying ...
0
votes
1answer
75 views
Uploading new sketch to Leonardo-type boards when you've changed the HID mode
I have Sparkfun Pro Micro (Leonardo compatible board). I got it because I plan to build my own array of controls for use in flight/racing sims.
My starting point is LeoJoy, and I didn't have any ...
0
votes
1answer
235 views
How to generate Chirp Signal using Arduino
i would like to generate Chirp Signal (Frequency Sweep) using Arduino. i have searched a lot in internet but didn't find anything.
Basically, any parameters is also ok. But the concept is what i am ...
0
votes
1answer
340 views
Arduino board not recognized by Linux (dmesg, lsusb, etc.)
I just received my first Arduino board which is essentially a Leonardo (ATmega32U4) customized to include a NFC reader (PN532).
When I plug it in, the PWR LED comes on steady, the D13 LED flashes a ...
2
votes
1answer
441 views
Does Leonardo need a separate power supply?
I'm currently using an Arduino Uno (R3), but want to switch to Leonardo for the USB-ability. The Uno can work from the USB's 5V. Looking at the Leonardo's schematic it seems the only input to the ...
0
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0answers
62 views
Wido wifi communication
Any one here tried WiDo (DFrobot) ? I need some help regarding wifi communication among two robots. I want to communicate with two robots via wifi (WiDo module).I dont have a clue to do it. Any clue ...
1
vote
2answers
188 views
Arduino Leonardo on Win 8.1 COM port disappeared
I've been using an Arduino Leonardo on my Windows machine for a few days now without too much trouble but today the COM port disappeared. I've been able to successfully send sketches to the arduino ...
0
votes
1answer
92 views
Leonardo with xbee shield?
I'm trying to get a XBEE shield to operate on an Arduino Leonardo. Usually i use the AltSerialLibrary to emulate an extra serial for the xbee. However since the Leonardo comes with two sets of serial, ...
0
votes
2answers
116 views
Controlling Arduino from Raspberry Pi
I am trying to control an Arduino Leonardo R3 to run some code when "triggered" from a Raspberry Pi, this would be in a loop so that it can be ran multiple times. I have setup the Raspberry Pi and ...
0
votes
1answer
747 views
Mac won't detect Serial Port for Leonardo
EDIT: The problem was the cable I was using (see answer below).
I have a MacBook Pro running OS X Yosemite (10.10.1). I connected my Arduino Leonardo to my computer for the first time today (using ...
0
votes
1answer
47 views
Blend with SD Shield
Building a data logging and transmission system here. I've a RedBeadlab Ardunio Blend with built-in BLE capabilities and a (cheap) SD / Data logging shield that looks very suspiciously like it's ...
0
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0answers
133 views
9v adapter burned out Leonardo style board
My first experience with Arduino ended in a tragedy. I bought a Leonardo from ebay and upon arrival, attached it to my laptop. Programmed a simple blink demo with the onboard LED. It started working. ...
0
votes
1answer
142 views
Arduino Leonardo is not recognized by usb cable in Windows 8
My Arduino Leonardo was working properly but for the last two hours when I connect it to a PC via a USB cable, it is reporting something like USB is not recognized and even in device manager it is not ...
-2
votes
1answer
469 views
how to serially communicate the arduino leonardo to pc through hyperterminal
I have connected mc to a pc using USB. I need data on hyperterminal through serial to USB connection, hence I connected TX, RX and gnd pins of the Leonardo to the rs232 pins and one other side of ...
0
votes
1answer
147 views
Arduino hangs after 3-4 minutes on battery power, but not on USB
I have a simple sketch running on a BE Leonardo-compatible board.
It reads input from a potentiometer, and outputs to two RGB LEDs which change colour over time - in a different pattern if certain ...
1
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0answers
160 views
How do I troubleshoot Seeeduino GPRS shield?
I am trying to receive an SMS message using the code, below, copied from Seeeduino GPRS - Wiki, with no success. Although there are several versions of the Seeeduino GPRS shield, mine is identical to ...
2
votes
3answers
746 views
Explanation please, of hardware and software serial links
I am starting to use a Seeeduino GPRS shield (please see note), which is essentially an Arduino Leonardo that, among other things, can be used as a mobile 'phone for sending and receiving texts. I ...
1
vote
1answer
353 views
Unable to upload sketch to Leonardo
I'm really at my wits end. For a couple of hours I have been programming a custom board that uses everything as on the Arduino Leonardo. A few hours ago I am not able to upload anymore.
I get the ...
0
votes
1answer
143 views
How would I establish a serial connection with python without using the serial monitor? [duplicate]
How would I establish a serial connection with python without using the serial monitor?
What I want to do is give my python script some input and have the arduino do something (blink for example)
I ...
0
votes
0answers
81 views
Talking between Arduino and PC (Java)
I have to realize a communication between Arduino Leonardo and a demon which runs on a pc.
The demon has to tell Arduino informations about the operative system of the machine to which it is ...
0
votes
1answer
983 views
Pixy(CMUcam5) robot Distance code
Can anyone help me with the code-ing to allow the robot to stop at a certain distance when the robot is approaching the tracked object. I am trying to implement it as a colour tracking wheel chair. ...
0
votes
1answer
62 views
Over voltage on Arduino and Ardumoto
I am using Arduino Leonardo and Ardumoto to drive 2 12v motors running at 1.3 amps each.
I purchased a rechargeable battery of 12V with 5AH
I first started by plugging in the battery to the Arduino ...
0
votes
3answers
170 views
How to control android app with arduino
I'm trying to connect Arduino Leonardo to an Android tablet. I would like to make the Arduino send commands (using pushbuttons or a slider for example) to the tablet to switch between pages, to select ...
0
votes
1answer
199 views
Arduino IDE Unable to detect ZumoMotor.H ( PIXY PET )
recently i trying to make the pixy pet work for my project. (https://learn.adafruit.com/pixy-pet-robot-color-vision-follower-using-pixycam/playing-with-your-pet).
I used the given code for the ...
1
vote
1answer
347 views
USB MIDI HID with the ATmega32u4?
There are existing projects that allow the Uno and other devices using the ATmega8u2 to operate as a USB MIDI HID, such as MocoLUFA. Unfortunately, as far as I am aware, these require uploading new ...
1
vote
1answer
517 views
Confusing Arduino Leonardo PWM
I'm having problems with using Arduino Leonardo PWM outputs (I'm actually using YUN board).
I need 4 PWM outputs that generally have the same base frequency of around 10 to 20 Hz or so.
I'm using ...
