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troubleshooting [2018/11/06 11:09]
arthur [SD Card problems]
troubleshooting [2019/03/03 22:15] (current)
arthur [I get disconnected from my host frequently]
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 This can be caused by several things : This can be caused by several things :
-* Make sure you use short good quality shielded USB cable with ferrite beads on it.+* Make sure you use as short as possible, ​good qualityshielded USB cable with ferrite beads on it ( this is a good example of such a cable :​ https://​goo.gl/MbP5mK )
 * Make sure the Smoothie PSU is plugged into the same outlet as the PC you are connected to, otherwise you can get ground loops. * Make sure the Smoothie PSU is plugged into the same outlet as the PC you are connected to, otherwise you can get ground loops.
 * If your printer is unusually large, add ferrite to everything coming from or going to your board ( motors, endstops, thermistors,​ mosfets, etc ) * If your printer is unusually large, add ferrite to everything coming from or going to your board ( motors, endstops, thermistors,​ mosfets, etc )
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 {{page>​software}} {{page>​software}}
 +
 +== Hardening
 +
 +Here are some ways you can make your board more resistant to failure
 +
 +=== Adding diodes to stepper motor drivers
 +
 +When manually moving a stepper motor ( or the axis it is tasked with moving ), the coils in the stepper motor can generate electricity. If that electricity is too high ( in terms of voltage ), it can damage the fets inside the stepper motor drivers the stepper motor is plugged into, making it so that the drivers can no longer move the motors ( requiring replacing the driver ).
 +
 +You can fully protect your board against this problem by adding diodes to the stepper motor connector. Instructions to do so acan be found at this link :​ https://​drive.google.com/​file/​d/​1rS3cFeG5eBuuCkOQj2L9rjkRBaJr8npB/​view?​usp=sharing
 +
 +This will be a standard feature for the v2-prime and v2-pro Smoothieboard models, but was kept optional on Smoothieboard v1. It is fairly rare that users damage their drivers this way, but some setups are more at risk than other, in which case hardening might be a good idea ( motor models that generate higher voltages, children likely to move the axes by hand often and fast, etc ... )
 +
 +A suprise tool that will help us later : 
 +
 +* https://​drive.google.com/​file/​d/​17i-90ATSAGQr0AjSGvQnaCrkhGMqMfJ1/​view
 +* https://​www.flickr.com/​photos/​68272764@N05/​sets/​72157676041861517/​
 +* https://​myhub.autodesk360.com/​ue295c58e/​g/​shares/​SH7f1edQT22b515c761e498e6d06e5302746