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troubleshooting [2018/06/02 21:17]
arthur [How to troubleshoot]
troubleshooting [2018/08/22 18:26] (current)
90.155.91.76 Tweak the wording of my RPi under-voltage suggestion
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 * Route wires for motors and mosfets away from signal cables ( endstop, thermistors,​ USB, etc ) * Route wires for motors and mosfets away from signal cables ( endstop, thermistors,​ USB, etc )
 * Try rebooting the host computer ( especially if the host is a Raspberry Pi ) * Try rebooting the host computer ( especially if the host is a Raspberry Pi )
 +* If printing from a Raspberry Pi ( e.g. from OctoPrint / OctoPi ), ensure that the Pi's power supply is capable of supplying the required current at a high enough voltage. The official Raspberry Pi PSU supplies up to 2.5A at 5.1V. Low voltages can cause USB communication issues, as well as SD card corruption and other crashes. With a Pi 3 B or 3 B+ you can monitor under-voltage events by watching for the Pi's red power LED turning off, a "​lightning bolt" icon being displayed over HDMI, or you can run ''​dmesg | grep voltage''​ in a terminal/​over SSH.
  
 See the [[http://​smoothieware.org/​usb|USB]] page See the [[http://​smoothieware.org/​usb|USB]] page
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 Please take a look at http://​slash7.com/​2006/​12/​22/​vampires/​ Please take a look at http://​slash7.com/​2006/​12/​22/​vampires/​
  
-=== Somebody refused to help me because my board is a MKS, what's that all about ?+=== What is wrong with MKS ? 
 + 
 +Was:​ « ​Somebody refused to help me because my board is a MKS, what's that all about ? »
  
 Smoothie is a community-built Open-Source project. Many people around the world come together to work and share to make the best possible CNC controller. They put likely more than a century of cumulated work into this, and make a lot of sacrifices so that *you* can have the best controller board and firmware possible, with the best documentation and best support. Smoothie is a community-built Open-Source project. Many people around the world come together to work and share to make the best possible CNC controller. They put likely more than a century of cumulated work into this, and make a lot of sacrifices so that *you* can have the best controller board and firmware possible, with the best documentation and best support.
  
 MKS ( or azsmz for that matter ) is a company that takes that work, and instead of contributing to it like everybody else, uses it all without respecting the work of the contributors or contributing themselves in the slightest. They don't respect the license of the documentation,​ they don't release their work as open-source despite it being obviously derived from open-source work. They wouldn'​t exist without the work of the smoothie community and act as if they had created all this themselves. MKS ( or azsmz for that matter ) is a company that takes that work, and instead of contributing to it like everybody else, uses it all without respecting the work of the contributors or contributing themselves in the slightest. They don't respect the license of the documentation,​ they don't release their work as open-source despite it being obviously derived from open-source work. They wouldn'​t exist without the work of the smoothie community and act as if they had created all this themselves.
-They also take sales away from open-source companies, and by doing so, severely restrict the means available to push the development of the project forward ( most companies selling *open-source* smoothie-compatible boards, actually contribute to the firmware in terms of time or money. MKS does not ).+They also take sales away from open-source companies, and by doing so, severely restrict the means available to push the development of the project forward ( most companies selling ​**open-source** smoothie-compatible boards, actually contribute to the firmware in terms of time or money. MKS does not ).
  
 MKS is considered a cancer, a parasite to the Smoothie project. MKS is considered a cancer, a parasite to the Smoothie project.
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 Before asking the Smoothie community for help, ask MKS for help.  Before asking the Smoothie community for help, ask MKS for help. 
-This is not a refusal to help. We only require that you ask MKS for help *first*. Then if MKS is not able to help you, you can ask the smoothie community, and it is possible that some members will want to help you. +This is not a refusal to help. We only require that you ask MKS for help **first**. Then if MKS is not able to help you, you can ask the smoothie community, and it is possible that some members will want to help you. 
-Again : our policy is not to refuse to help MKS users, but to require that you ask MKS for help *first*.+Again : our policy is not to refuse to help MKS users, but to require that you ask MKS for help **first**.
 If MKS is able to help you, that's great. If they are not able to help you ( which is likely, they are known for being very incompetent ), then you can ask the Smoothie community for help. If MKS is able to help you, that's great. If they are not able to help you ( which is likely, they are known for being very incompetent ), then you can ask the Smoothie community for help.
  
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 <​Spider2077>​ when i got my smoothie i did a lot of reading and ofcource i ran in to the option to get a MKS and other boards cheaper tempting but then what do i do if i need help knockoffs have no support i mean i thought it was commun sense <​Spider2077>​ when i got my smoothie i did a lot of reading and ofcource i ran in to the option to get a MKS and other boards cheaper tempting but then what do i do if i need help knockoffs have no support i mean i thought it was commun sense
 </​code>​ </​code>​
 +
 +<callout type="​warning"​ icon="​true"​ title="​A note on hardware">​
 +MKS boards have well documented problems : 
 +
 +* They use 100Mhz chips when Smoothie is designed to run at 120Mhz ( and very optimized for that speed )
 +* They use two layer PCBs when a board this complex should really use a four layer PCB
 +* They have poorly traced USB traces resulting in USB connection instabilities ( disconnections )
 +* They use DRV8825 stepper drivers which are much more prone to loosing steps than Allegro or Trinamic drivers
 +* They are overall very poorly designed ( the first versions were unusable and got fixed by users who mistakenly though the board was Open-Source,​ MKS themselves has no know-how ).
 +* They are not tested before shipping to you, and MKS has been shown to be incredibly dishonnest in handling return/​replacement requests ( in one case a year ago the MKS answer was : « please don't ask for a return or my boss will fire me » ).
 +
 +There is a **huge** difference in the number of problems for MKS boards compared to normal boards ( meaning MKS boards have much much more problems ), and it's unfair that the Smoothie community would have to deal with MKS' choice to make bad boards.
 +</​callout>​
 +
 === I'm a contributor to the project and I disagree with someone on something. === I'm a contributor to the project and I disagree with someone on something.