megadesk | Open-source IKEA Bekant controller board

Have you tried turning it off again? :) Seriously - from testing many of these units, about 1 out of 20 times the handshake seems to fail as it does contain some random elements. A simple power cycle will provide a new handshake and the unit will power up. Try unplugging the desk from the wall and plugging it back in (With megadesk connected) Alternatively, try powering on the desk with NO controller attached, and then plugging in the megadesk after the desk is powered on.Is the safety key inserted? It is still required for the motors to engage. You will not hear any beeps when using buttons if it is removed.Try different variant modes described above by pushing UP 16 times.Test the up/down button connectivity Holding UP while powering on will enter a button test mode, where the up/down buttons can be held to test that they are working - a power cycle is required to exit this mode.Factory Reset Holding DOWN while powering on will wipe the EEPROM memory - a power cycle is required to exit this mode. The unit will be in variant mode 1 after a wipe. Make sure to try variant modes.Recalibrate/reset the motors (New discovery : July 2020) This step must be done with the ORIGINAL BEKANT controller. Hold the UP and DOWN buttons for 8 seconds, after that let go of up while maintaining the pressure on the down button. The desk will lower until it stops on its own. Let go of all buttons, and test regular desk functionality with the original controller. Once functionality is confirmed, replace with megadesk.