piezo | Piezo is a set of tools for operating a quartz scheduling | Job Scheduling library

I am working on a project for college. It involves an Arduino Pro Trinket, and is supposed to be an instrument of some kind.

The premise is that you will have 4 potentiometers which will change the pitch of 4 tones. These tones will be enabled/disabled by one button each. The tones can be played on any number of piezos, however the less the better.

I'm aware that Arduinos do not have sufficient timers to play multiple tones, however in my case, timers are not necessary. I'm pretty much brand new to Arduino however get the basics of using potentiometers with them which is the only other difficult part.

Am I complicating this?

Thanks in Advance-

I made a small C program for an Arduino board to play some tones via a piezo buzzer. I adapted it try to take input from the serial monitor, iterate through the input using a for loop and play the corresponding tones using if/if else.

Unfortunately I have run into a problem that I cannot figure out as I am still quite new to C. If you have the time would you mind pointing me in the right direction as to fix it?

Thanks in advance.

I am getting an error:

/Assignment_02_V2.ino: In function 'void loop()': /Assignment_02_V2.ino:38:16: error: a function-definition is not allowed here before '{' token

int main() { ^ exit status 1

Here is the code:

I am trying to creat a multiple figure within a loop. The first loop creats the upper figure (ax[0]) by adding certain plots (two in this case), meanwhile the second one (ax[1]) creats the lower figure, with just one plot.

After the first iteration of the second loop, the figure is saved and the second figure(ax[1]) is reset. The process is repeated until last iteration of the second loop is reached.

I am trying to make a whooping alarm using a piezo buzzer that rises linearly from a frequency of approximately 100Hz to 800Hz, over the course of one second. How do I do this?

I do not need exact measurements or timings, just something that will grab attention.

I believe tone()is the only way to go about this?

I am trying to play a song on 2 buzzers using my arduino mega 25600, but I suck at C++. I have managed to figure out how to play on one buzzer, but I want to play 2 different melodies simultaneously on 2 different buzzers. Here is my code:

Hi C++ Devs and StackOverflow users!

The code following is what I did, but some reason, random function doesn't work, or output for a result always the same value which is '1', did I do anything wrong? How should I fix this issue?

I'm using a Jetson TX2, and a Arduino Uno to try and communicate over USB serial, the premise is I'm using a Arduino to communicate with some Laser ToF sensors, and a Thermopile.

The Jetson is running Ubuntu 16.04 for ros compatability as this will eventually tie into a ros node

Using just the Arduino IDE, serial monitor it the call and response works as intended, however once I try to get the call and response working using the Jetson that's where the data isn't get correctly written printed on the terminal.

The arduino prints a byte "9" to the Jetson when it's ready to receive, and the Jetson prints a "1" or a "2" over serial when it wants to receive the time of flight or thermal sensor data respectively.

The intended communication is for the Jetson to recieve 5 comma separated, float values from the ToF Sensors, followed by 64 comma separated float values from the thermal sensor, however I get the following:

Sending 1 for ToF Data

Reading data

1 bytes read, buffer contains:

Sending 2 for Thermal Data

Reading data

35 bytes read, buffer contains: Thermal/ToF sensor data

The code for the Arduino is as follows:

I have log file data(.txt) here

As you can see on log file that has Date and Time content.

And now I have PHP function to get the data from log file.

Continuing on my previous question.

I have text log file called reject. You can see it here

As you can see there are 4 steps on tab called: