{"id":1327,"date":"2013-01-02T11:23:24","date_gmt":"2013-01-02T10:23:24","guid":{"rendered":"http:\/\/www.dotmana.com\/weblog\/?p=1327"},"modified":"2013-02-27T15:45:30","modified_gmt":"2013-02-27T14:45:30","slug":"cnc-3020t-review","status":"publish","type":"post","link":"http:\/\/www.dotmana.com\/weblog\/2013\/01\/cnc-3020t-review\/","title":{"rendered":"CNC 3020T review and customisation"},"content":{"rendered":"

The CNC 3020T from eBay or Alibaba is quite good for the money (700$\/600\u20ac inclVAT).<\/p>\n

I use it with LinuxCNC<\/a> on a dedicated computer with parallel port (hard to find nowaday).<\/p>\n

For me the hardest part was designing and typing the G code manually to get this:<\/p>\n

\"\"<\/a>\"\"<\/a>\"\"<\/a>But it laked some feature such as spindle control from computer, so I made this mod.<\/p>\n

From the Spindle_drive_mod.pdf<\/a> you can see by adding an optocoupler, you can control the spindle ON and OFF:<\/p>\n

\"\"<\/p>\n

On the stepper the board YOOCNC T62-3AX, extra optocoupler are present on the input side, so, just take the first one on the left (the right one is used for the Emergency Stop):<\/p>\n

\"\"<\/a><\/p>\n

and place it on the free place, without soldering the pin 3 and 4<\/p>\n

\"\"<\/a><\/p>\n

The pin 3 and 4 should be lifted and insulated from PCB with tape (Kapton) and attached to pin header:<\/p>\n

\"\"<\/a><\/p>\n

On the spindle motor board, add pin in the free slots:<\/p>\n

\"\"<\/a><\/p>\n

\"\"<\/a><\/p>\n

And just run 2 wire from the Stepper board to the spindle board (respect polarity):\"\"<\/a><\/p>\n

Then just configure Step<\/p>\n

More to come: RPM speedometer and X-Y home switch.<\/p>\n","protected":false},"excerpt":{"rendered":"

The CNC 3020T from eBay or Alibaba is quite good for the money (700$\/600\u20ac inclVAT). I use it with LinuxCNC on a dedicated computer with parallel port (hard to find nowaday). For me the hardest part was designing and typing … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-1327","post","type-post","status-publish","format-standard","hentry","category-electronics"],"_links":{"self":[{"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/posts\/1327","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/comments?post=1327"}],"version-history":[{"count":7,"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/posts\/1327\/revisions"}],"predecessor-version":[{"id":1431,"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/posts\/1327\/revisions\/1431"}],"wp:attachment":[{"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/media?parent=1327"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/categories?post=1327"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.dotmana.com\/weblog\/wp-json\/wp\/v2\/tags?post=1327"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}