im using arduino mega 2560 and i press connect but then is connected says false
also im using the web snap4arduino
Have you successfully installed the Chrome extension
and have you installed Firmata onto your board
[edit]Just checked and all working as expected on my Standard Uno clone - don't have a mega 2560 board to test unfortunately
uh wahts firmata do and also im on microsoft edge
As you can see, the warning says "This item can only run on ChromeOS", meaning this is a Chromebook-exclusive extension, so that's why you can't download it.
You should tell the developer for Windows support.
At the bottom of the extension page you can find this:
It is not necessarily a Chromebook exclusive, just a Chrome OS exclusive. Install Chrome OS Flex on a different machine or a virtual machine.
Here are some guides and stuff that can help
For real hardware:
Prepare for installation - ChromeOS Flex Help
(Official Google guide)
Index of /downloads
(USB imager for Windows; use it to create a bootable USB with the extracted .bin file from the ZIP file downloaded from Google. You can create a bootable USB this way too, but the browser version is easier.)
For a virtual machine:
1: Create the USB installer - ChromeOS Flex Help
(Follow instructions from the Download from Google section to get an ISO file. Make sure to extract the contents of the downloaded ZIP file and convert the .bin file to a .iso file. superuser.com/questions/1624105/how-to-install-a-bin-file-on-virtual-box. Make sure you replace the command line arguments correctly.)
https://www.virtualbox.org/
(Virtual machine for Windows)
You should be able to connect to the Arduino with the Bridged network adapter setting enabled, letting the sandbox access the host's ports and IP addresses.
The easy way to do this would be to find an old computer you don't use anymore and install Chrome OS Flex on it until the extension is available for Windows.
There is a separate extension for Edge browser
It has to be installed manually - come back if you have difficulties doing this
im having trouble uploading my program. i installed firmata in the arduino ide but its giving me exit code 1
Does it give any more information than that?
avrdude: ser_open(): can't open device "\\.\COM3": Access is denied.
avrdude: ser_drain(): read error: The handle is invalid.
avrdude: ser_send(): write error: sorry no info avail
avrdude: stk500_send(): failed to send command to serial port
avrdude: ser_recv(): read error: The handle is invalid.
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: sorry no info avail
avrdude: stk500_send(): failed to send command to serial port
avrdude: ser_recv(): read error: The handle is invalid.
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: sorry no info avail
avrdude: stk500_send(): failed to send command to serial port
avrdude: ser_recv(): read error: The handle is invalid.
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: sorry no info avail
avrdude: stk500_send(): failed to send command to serial port
avrdude: ser_recv(): read error: The handle is invalid.
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: sorry no info avail
avrdude: stk500_send(): failed to send command to serial port
avrdude: ser_recv(): read error: The handle is invalid.
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: sorry no info avail
avrdude: stk500_send(): failed to send command to serial port
avrdude: ser_recv(): read error: The handle is invalid.
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_getsync(): timeout communicating with programmer
Failed uploading: uploading error: exit status 1
it can compile, but not upload
You have an OS permission (firewall or antivirus) or port identification problem.
You may try uploading directly from the browser https://snap4arduino.rocks/, section supported devices.
There is a dialog that shows every serial device available to the OS/browser.
BTW, it's an AVRDUDE output, not from the Snap4Arduino.
tried to upload from the browser, this happened
also i think when i first installed the arduino ide it wanted access to something
I think you need more specific and detailed help about Arduino and boards.
Search the dedicated group, Arduino Forum.