An Arduino board based on the ATmega32u4 chip with built in USB HID functionality
1
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0answers
19 views
Using USB on a Leonardo to receive data from PC
I am new to the Leonardo, having only used a duemilanove before, and I am interested in using it's USB capabilities for a project.
Basically I need it to be an input and output device, communicating ...
0
votes
1answer
25 views
Burning Arduino Leonardo Bootloader to ATmega32U4 with 8MHz internal clock
Burning question:
So, I'm trying to burn the Arduino Leo bootloader onto a ATmega32U4 that's on 3.3V and the internal 8MHz clock. Do I have to modify and rebuild the bootloader to set the fuses ...
1
vote
1answer
29 views
Handling serial streams biggers than the available ram
I need to parse text coming into my MC (Leonardo) over the hardware serial port. The data comes in burst, and the parsing routine manage the data flow with easy when it is less than the serial buffer.
...
0
votes
0answers
14 views
Is serial modem routine written on the Arduino Leonardo bootloader?
I'm starting with Leonardo and I'm a bit confuse about the serial modem function. As you know on boot the Leonardo for the first 8 seconds wait for a program on the USB port and then it goes in serial ...
0
votes
3answers
30 views
Request for member is Non-class type
Im getting this error:
iotHook.ino: In function 'void setup()':
iotHook:13: error: request for member 'begin' in 'esp', which is of non-class type 'Esp8266()'
request for member 'begin' in 'esp', ...
0
votes
1answer
94 views
Can't get Arduino Leonardo working as a USB keyboard in Windows 7
I can't believe I am stumped by this, but this is my issue and I can't see any other solution for this anywhere.
I have an official Arduino Leonardo loaded up with the following code:
void setup() {
...
0
votes
1answer
45 views
What happens if I don't open the USB serial port of Arduino Pro Micro / Leonardo?
My question is related to this one. I think my sketch stop responding after some tome if I run it with debug enabled and I don't open the port/monitor on the computer.
Does the UART buffer fill up ...
1
vote
2answers
74 views
Is there any problem about calling if (Serial) many times?
I am trying to debug a problem that I think may be related to the debug code itself and I tried to use theese macros:
#define DEBUG_PRINT(x) { if (Serial) { Serial.print(x);} }
#define ...
4
votes
1answer
43 views
IR frequency difference
I want to create a device that interfaces with the Light Strike Lasertag system using an Arduino Leonardo.
The Light Strike system uses not laser but regular infrared signals. According to a site ...
0
votes
2answers
36 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
votes
2answers
66 views
Can I use analogReadResolution() on an Uno or Leonardo?
I am trying to get a spectrum analyser up and running. I found the following code on Galileo GEN2 Project - Real-Time Audio Spectrum Analyzer1:
/*
*
* Galileo GEN2 Project - Real-Time Audio ...
0
votes
0answers
29 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
votes
2answers
127 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
55 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
75 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
96 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
72 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
57 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
votes
1answer
72 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
91 views
How to calculate SOC with Arduino?
I want to calculate the Stage Of Charge (SOC) of this battery bank using Arduino Mini or Pro Micro.
Please tell me how i do this with Arduino if possible give some circuit diagram.
0
votes
1answer
34 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 ...
0
votes
0answers
69 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
33 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?
0
votes
1answer
17 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
votes
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 ...
0
votes
0answers
51 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
votes
0answers
115 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 ...
1
vote
0answers
159 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
49 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
202 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
201 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 ...
-7
votes
1answer
333 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
390 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 ...
0
votes
1answer
194 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
89 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
2answers
266 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
391 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
451 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
votes
0answers
71 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
209 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
113 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
122 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
815 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
52 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
votes
0answers
135 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
2answers
173 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 ...
-3
votes
1answer
547 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
166 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
vote
0answers
181 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 ...
