An Arduino board based on the ATmega32u4 chip with built in USB HID functionality
0
votes
0answers
25 views
Arduino Controlling through C#
i would like to measure some signals from arduino and send it to a pc using USART and display the results in a c# winform application. Does anyone have such a project example ?
Besides, i want to send ...
4
votes
2answers
37 views
Leonardo (32u4): ways to brick it programmatically
When the Leonardo was introduced, I think, I've read some articles about being cautious to do some things, that could cause it to not load any new sketches any more, so one has to rewrite the ...
0
votes
2answers
31 views
Leonardo (32u4): Timer0 problems with CTC mode
I want to use timer 0 to generate a rectangular signal on OC0A (D11) without the use of Arduino specific functions (that use timers for themselves). When I toggle D11 manually using a loop, I hear a ...
1
vote
1answer
33 views
Problem loading sketch to Leonardo
Today I got Arduino Leonardo to replace my Uno. I've tried running one of sketches I use on the Uno, but with no luck. When I start the upload, RX LED on the Leonardo flashes few times, and after ...
1
vote
2answers
57 views
What's wrong with my undetected, unresponsive Arduino Robot?
I was wondering if someone could try and solve a major problem I've been having with a brand new Arduino Robot (similar to an Arduino Leonardo). Any input would be very much appreciated!
I've been ...
0
votes
0answers
12 views
RaspberryPi to Arduino(leonardo) avoiding latency [migrated]
I'm using a Python script via (TKinter)on the raspberryPi to capture mouse movement and events.
My goal is to send this data, in real time, to another connected Arduino device(Leonardo).
My first ...
0
votes
0answers
16 views
Adafruit 2.8'' TFT Board SPI vs 8-bit Mode
is anyone out there who can tell me, if there is an extreme noticeable difference in using 8-bit or SPI Mode?
In later Projects I want to display values on it and refresh them in a 1 - 1/2 second ...
0
votes
0answers
46 views
Leonardo based Tachometer?
I'm new here. I'm not a native speaker, so pardon me for my English .
Just received my Arduino Leonardo today. I tried some basic calculations and stuff like blinking and lcd interfacing.
Its ...
0
votes
1answer
62 views
Why PIN3 stays at 1v3 in a IR emitter project?
Here is my very simple IR emitter circuit.
OSI5FU5111C-40 is an infrared LED.
I am using the IRremote library from here
in this simple sketch,
#include <IRremote.h>
unsigned int ...
2
votes
0answers
69 views
Arduino Leonardo timing Inconsistency
I've got a question regarding the use of Millis() on a Leonardo Arduino. I'm currently using it to time 4 seconds elapsed while sending a serial message every second. These messages play a sound. On ...
1
vote
0answers
20 views
Teensy USB Core on Leonardo
The USB Serial speed on the teensy is WAY faster then on the Leonardo. Looks like because they have greatly improved the USB code. Has anyone had any luck using the Teensy core libraries on a ...
-1
votes
2answers
24 views
Keyboardmessage on Arduino UNO
Can an Arduino UNO and Arduino Leonardo do the same things?
Some of the examples in the Arduino software say to use Leonardo e.g. KeyboardMessage.
1
vote
1answer
85 views
Uploading Sketches from Windows Command Line
The resources I've found regarding the Command Line interface seem to be out of date so I was hoping to find someone with experience using it. I'm currently running Arduino 1.5.6-r2 BETA on Windows ...
1
vote
2answers
104 views
Power small hobby motor using Vin pin on Arduino and 9V battery, safe?
I want to power a small motor with a 9V battery and control it with PWM using an Arduino Leonardo. I know I can power the motor separately, but this introduces the problem of needing a battery to ...
1
vote
2answers
104 views
portd not writing on digital ports 5 and 7
I try to build a function generator (preferably a sine) with an R-2R ladder and a Arduino Leonardo by Borderless Electronics.
For performance reasons one should use portd instead of digitalWrite.
...
2
votes
3answers
76 views
How Do I Properly Ground my Arduino Leonardo using Capacitive Sensor?
Hi we are using Arduino Leonardo with some electric paint and Capacitive Sensor Libraries. We have a lot of variance in our Serial output from our sensors, we believe if we grounded the Arduino we ...
4
votes
1answer
81 views
Can I speed up the Leonardo bootloader?
Inspired by an example question before beta, can I make the Leonardo bootloader take less that 8 seconds to run? It is very slow and I want to speed it up somehow.
2
votes
1answer
50 views
Arduino UNO and Leonardo SPI Clock can't be meassured
I want to measure the SPI Clock (PIN 13) using the arduino example Codes for SPI library ( very simple example ). Basically independent from the Loop Function, the Clock should be fired continously.
...
1
vote
1answer
72 views
How can I filter out noise from ADC lines without delay or signal change?
I'm working on a project with a joystick and I'm trying to keep everything a simple and low latency as possible. I am reading the pots with the onboard 10bit ADC on the ATmega 32u4 but may be ...
0
votes
1answer
48 views
How do I use a i2c port expander to read buttons with pull ups and inverting the resulting uint16_t?
I am using a mcp23017 to read button presses for my joystick project and am using the internal pullup to minimize complications. Is there a way to invert all the bits in the uint16_t so i can send the ...
1
vote
2answers
218 views
Serial.read has garbled data after a Serial.write
I'm using the Serial1 of the Arduino Leonardo to send and receive data with another MCU. The following code will always retrieve garbled data:
byte streamReadResponse;
Serial1.begin(115200);
...
10
votes
2answers
358 views
Why do some pins have a different PWM frequency?
According to the Arduino reference for analogWrite(), the PWM frequency on most pins is ~490 Hz. However, it's ~980 Hz for pins 5 and 6 on the Uno, and for pins 3 and 11 on the Leonardo.
Why are ...
5
votes
3answers
280 views
How to really shrink a sketch
I want to make a sketch that is as small as possible, for test purposes. The problem is, when i compile the BareMinimum sketch (with an empty setup and loop), i get 466 bytes for the Uno and a ...
