software upload to microbit v2 not stable

OpenRoberta / openroberta-lab

The programming environment »Open Roberta Lab« by Fraunhofer IAIS enables children and adolescents to program robots. A variety of different programming blocks are provided to program motors and sensors of the robot. Open Roberta Lab uses an approach of graphical programming so that beginners can seamlessly start coding. As a cloud-based application, the platform can be used without prior installation of specific software but runs in any popular browser, independent of operating system and device.

Apache License 2.0

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1. problem connect a v2 to the lab using usb. write a simple program. upload it via the file system method (not webusb).

the program is uploaded and runs
don't disconnect the v2
after some time the error 504 is visible on the display
the file fail.txt on the v2 containd the message 'error: The transfer timed out. type: transient, user'

the upload seems to be not terminated correct. WebUsb is not affected by this error. reproducable on prod and test.

2. problem connect a v2 to the lab using usb. Use a current lab version derived from base version 40. Execute a set to factory default:

with webusb a flash error is shown in all of my tests.
with file system upload, a timeout occurs. The default program starts, but terminates later with code 504 in most cases.

OpenRoberta / openroberta-lab

software upload to microbit v2 not stable #1663