Consider case difference or extra characters introduced from the source of your communications. Even non printable characters may pose a problem and cause the test to fail. Consider using *.substring(). Arduino and visual basic Serial data. Split serial.readString() output. Sep 14, 2015 Hi, According to your description, you need help to establish serial communication using C++. You can write a class for basic Serial Communication. Serial Communication. The communication between the Arduino and Visual Basic is done using ascii over serial/usb. The data sent to the Arduino is formatted in to commands which are enclosed in start and end markers; '. Tutorial on How to control Arduino using Visual Basic programs. Visual Basic Arduino. Arduino has already provided a serial communication class, and there are built in examples of how to use them. Here is the official doc. 8 thoughts on “ Visual Basic Arduino Controlled Through USB ” Blanxtar 6th July 2015 at 2:53 pm. Serial Communication. The communication between the Arduino and Visual Basic is done using ascii over serial/usb. The data sent to the Arduino is formatted in to commands which are enclosed in start and end markers; '.
- Arduino Serial Port Visual Basic 2010
- Visual Programming Language For Arduino
- Arduino Serial Communication Code
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Story
This article shows how to communicate between Arduino and Visual Studio through COM (UART) port.
(1) Arduino will send data to the Visual Studio program:
(2) Visual Studio program will send data to Arduino. Arduino receives it, then feed it back to Visual Studio program.
Overview of steps:
1. Hardware connection2. Arduino program3. Visual Studio program
1. Hardware connection
2. Arduino program
Make a program for Arduino. At start up, Arduino will send a string (a sentence) every 0.5 sec. This will stop when User sends data (string) to Arduino, then Arduino will send it back to User. In this case, User is Visual Studio program (in part 3).
The code can be downloadhere - Google share
3. Visual Studio program
Make a windows application ? save it.
Add a button, textbox and label to the Form (taken from Toolbox in the left):
Click on button, textbox and label to see Properties in the Toolbox in the right. Remember the name of each item to program in a latter section.
Add components 'serial Port' and 'timer':
Also, see properties to know the name each item. Remember to rename 'serialPort1' ? 'Portname' to COM-Port of Arduino (this case is COM4)
Programming works:The whole code of Visual Studio program can be downloaded here - Google share
(1) Double click to Form1 ? input the following code.Meaning: open (Arduino) COM-Port and start timer1
(2) Double click to Button1 ? input the following code.Meaning: send string from textBox1 to (Arduino) COM-Port
(3) Double click to timer1 ? input the following code.Meaning: every time timer1 ticks (it will tick every 0.1s ? setting in 'Interval' of Properties of timer1), label1 will update information
(4) Click to serialPort1 ? see at Properties toolbox ? click at 'Event' icon ? double click at 'DataReceived'.
Then input the following code.
Meaning: read COM-Port data at every time receiving ? save it to '
mStr
'Auxiliary code:
(1) Meaning: when Form1 is closed ? close COM-Port and stop timer1
(2) Meaning: make global variable '
mStr
'After all, click icon 'Local Window Debugger' to build and run the program.
If everything runs smoothly, a window form will appear (note: Arduino should be connected to computer through COM4 with the program as in Step2).
At result (1): Form1 will show results from Arduino.
At result (2): Form1 will send data to Arduino, then receive it after Arduino sends it.
Read moreCredits
whitebank
i'm mechatronics engineer who loves making funny project and sharing for you. See me at:http://www.engineer2you.com/
I am still very new to Visual Basic and I have been surprised at how quickly you can develop working apps. My first attempt resulted in a very basic app to receive data from the Arduino which taught me the basics of serial communication in VB. The next step is two way communication and controlling the Arduino from the VB program. I already have a similar project arduinoBTcontrol, where the Arduino is controlled from an Android app over Bluetooth. So all I need do is tweek the Arduino sketch and recreate the Android app in VB.
Here is the app screen.Visually it is nothing special and all controls are straight out of VB but is it working well.
Here is the circuit. Basically the same circuit as used in the Bluetooth project minus the Bluetooth module.
Serial Communication
The communication between the Arduino and Visual Basic is done using ascii over serial/usb. The data sent to the Arduino is formatted in to commands which are enclosed in start and end markers; '<' and '>'.
In this example there is very little data sent from the Arduino to the host computer and so I have not used start and end markers for the data send from the Arduino. For a more complex project I would enclose all data in markers as an easy way to ensure I receive a complete command.
The Commands
Depending on the button / slider used, the VB program sends different commands to the Arduino. I have tried to make the commands easy to read and this makes them longer than they need to be. For example, to turn on the LED connected to pin 4 the command is “<P004ON>”, this can be shortened to “<P41>” by using 1 to mean HIGH and 0 to mean LOW.
P – Pin HIGH/LOW.
– <P001ON>, Pin 001 on or Pin 1 HIGH
– <P001OF>, Pin 001 off or Pin1 1 LOW
The button toggles between ON and OFF. First click turns the LED on, the second click turns the LED off
The Arduino Sketch recognises Pin 4,5,6,7,8,9, and 12
N – Navigation
– <NUON>, U for UP. ON for HIGH
– <NUOF>, U for UP. OF for LOW
The navigation buttons work on button down and button up. When the button is clicked and the button becomes pressed the ON signal is sent. When the button is released the button returns to the up position the OF signal is sent.
There are 4 directions (up, down, left and right) and a OK/Select button
The OK button works with regular mouse clicks.
The OK button works with regular mouse clicks.
Command buttons.
There are 3 command buttons, these send the following commands
– <CMD01> – red / green flash
– <CMD02> – LED chaser
– <CMD03> – RGB LED cycle colours
The command buttons work in a different way to the other buttons. After a command is sent, the VB program waits for a completed signal from the Arduino. The clicked button becomes inactive until the completed signal is received.
T – RGB slider
<Trrrgggbbb>
– rrr is the decimal value 0-255 for the red LED
– ggg is the decimal value 0-255 for the green LED
– bbb is the decimal value 0-255 for the blue LED
<T000000000> is fully off and <T255255255> is fully on
As soon as one of the RGB sliders is moved the new position is sent to the Arduino.
At the bottom of the window is a text box where any command can be entered by the user. The data entered is enclosed in the start and end markers before being sent to the Arduino.
The commands accepted are FON, FOF, DON, and DOF
– FON / FOF, acknowledgement on/of. If you turn this off the commands buttons never reset.
– DON / DOF, debug on/of. With debug on, the Arduino mirrors the data it receives back to the VB program. The commands are then displayed in the Received Data text box.
The Arduino Sketch
The Arduino sketch waits around for serial data and then depending on the data received does something. Basically turn an LED on or turn one off. Of course once you have the LEDs working you can change the sketch to do what ever you like.
The Arduino expects the data to be enclosed in start and end markers and anything received not contained in the markers is ignored.
![Communication Communication](https://i.ytimg.com/vi/C6_ZEk9Jri0/hqdefault.jpg)
Arduino Serial Port Visual Basic 2010
Most of the work is done in the parseData() routine. This looks at the data received and reacts accordingly.
The Visual Basic Program
The program is written in VB2013 which is part of the Visual Studio package. I am using Visual Studio 2013 Community which is a full development package and available for free for hobbyists, students and freelance developers. Visual Studio 2013 Community is available for download at https://www.visualstudio.com/en-us/products/visual-studio-community-vs.aspx.
The VB program waits for the user to press a button or move a slider and then sends the appropriate command to the Arduino
Connecting
To connect to the Arduino selected the appropriate COM port and click the connect button. The VB program will make a connection and send a HELLO message to the Arduino. If the Arduino replies then we are connected and the button text changes. If no reply is received then an error message is displayed.
Next steps
– add different functions such as motor control or send sensor data from the Arduino to the VB program,
– add regular checks to see if the Arduino is connected
– reset the command buttons when acknowledgement is turned off
– reset the Arduino when disconnected
– add regular checks to see if the Arduino is connected
– reset the command buttons when acknowledgement is turned off
– reset the Arduino when disconnected
![Visual Visual](https://cdn.instructables.com/FH2/AIS3/ISCAUT9Z/FH2AIS3ISCAUT9Z.MEDIUM.jpg)
Download
Download the Arduino Sketch, the VB program(exe file) and the VB2013 project files
Visual Programming Language For Arduino
arduinoVBserialControl.zip 126.30 KB