{"id":2168,"date":"2021-01-28T21:10:20","date_gmt":"2021-01-28T14:10:20","guid":{"rendered":"http:\/\/robot3t.com\/?post_type=product&#038;p=2168\/"},"modified":"2026-10-15T11:47:52","modified_gmt":"2026-10-15T04:47:52","slug":"bob3t-03-lpt-breakout-board-charge-pump","status":"publish","type":"product","link":"https:\/\/robot3t.com\/en\/san-pham\/bob3t-03-lpt-breakout-board-charge-pump\/","title":{"rendered":"BOB3T-03: LPT Breakout Board for Plasma CNC"},"content":{"rendered":"<div class=\"r3-keyspecs\">\n<div><strong>5 axes<\/strong><span>Motor drivers<\/span><\/div>\n<div><strong>LPT<\/strong><span>Mach3 compatible<\/span><\/div>\n<div><strong>0\u201310 V<\/strong><span>Isolated spindle output<\/span><\/div>\n<div><strong>2 relays<\/strong><span>Spindle \/ charge pump<\/span><\/div>\n<\/div>\n<p>BOB3T-03 is an LPT (parallel port) breakout board that connects your PC to the motor drivers and I\/O of a CNC plasma or milling machine. It fully supports Mach3 and other LPT-based CNC software, controls up to 5 axes, and shows the status of each axis on LEDs. Separate USB and external power supplies protect your PC, an opto-isolated 0\u201310 V output controls spindle speed through a frequency inverter, and two relay outputs switch the spindle or charge pump. Five inputs handle emergency stop, limits and tool touch-off, and every LPT pin name is printed on the board for quick, error-free wiring. Designed and built by Robot3T in Vietnam.<\/p>\n<a href=\"\/en\/contact\/\" class=\"button primary\" style=\"border-radius:99px;\">\n\t\t<span>Request a quote<\/span>\n\t<\/a>\n <a href=\"https:\/\/wa.me\/84974908615\" class=\"button primary is-outline\" style=\"border-radius:99px;\">\n\t\t<span>WhatsApp +84 974 908 615<\/span>\n\t<\/a>\n\n<h3 class=\"r3-spec-title\">Typical applications<\/h3>\n<ul>\n<li><strong>CNC plasma cutting tables:<\/strong> linking Mach3 to axis drivers, THC and torch control.<\/li>\n<li><strong>CNC routers and milling machines:<\/strong> spindle speed control via inverter.<\/li>\n<li><strong>DIY and retrofit CNC:<\/strong> an affordable, proven interface for PC-based machines.<\/li>\n<li><strong>Training:<\/strong> CNC wiring and control practice in schools and labs.<\/li>\n<\/ul>\n<h3 class=\"r3-spec-title\">Why BOB3T-03<\/h3>\n<ul>\n<li><strong>Protects your PC<\/strong> \u2013 separate USB and external power supplies.<\/li>\n<li><strong>Mach3 ready<\/strong> \u2013 works with Mach3 and other LPT-based software, with charge pump support.<\/li>\n<li><strong>Up to 5 axes<\/strong> \u2013 with LED status for each motor driver.<\/li>\n<li><strong>Spindle control<\/strong> \u2013 opto-isolated 0\u201310 V analog output for inverters, plus 2 relay outputs.<\/li>\n<li><strong>Safety inputs<\/strong> \u2013 5 inputs for E-stop, limit switches and tool touch-off.<\/li>\n<li><strong>Easy wiring<\/strong> \u2013 all LPT pin names printed on the board.<\/li>\n<\/ul>\n<h3 class=\"r3-spec-title\">Specifications<\/h3>\n<div class=\"r3-spec\">\n<table>\n<tbody>\n<tr>\n<td>Model<\/td>\n<td>BOB3T-03<\/td>\n<\/tr>\n<tr>\n<td>PC interface<\/td>\n<td>LPT (parallel port)<\/td>\n<\/tr>\n<tr>\n<td>Software<\/td>\n<td>Mach3 and other LPT-based software<\/td>\n<\/tr>\n<tr>\n<td>Axes<\/td>\n<td>Up to 5, with LED status<\/td>\n<\/tr>\n<tr>\n<td>Power<\/td>\n<td>USB + separate external supply<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table>\n<tbody>\n<tr>\n<td>Analog output<\/td>\n<td>0\u201310 V, opto-isolated (spindle speed)<\/td>\n<\/tr>\n<tr>\n<td>Relay outputs<\/td>\n<td>2 (spindle \/ charge pump)<\/td>\n<\/tr>\n<tr>\n<td>Inputs<\/td>\n<td>5 (E-stop, limits, tool touch-off\u2026)<\/td>\n<\/tr>\n<tr>\n<td>Charge pump<\/td>\n<td>Supported<\/td>\n<\/tr>\n<tr>\n<td>Origin<\/td>\n<td>Robot3T, Vietnam<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3 class=\"r3-spec-title\">Product and wiring<\/h3>\n<div class=\"row align-middle\"  id=\"row-2069502915\">\n\n\t<div id=\"col-1464083084\" class=\"col medium-4 small-6 large-4\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_1156228084\">\n\t\t<a class=\"image-lightbox lightbox-gallery\" title=\"\" href=\"https:\/\/robot3t.com\/wp-content\/uploads\/2017\/07\/z1393202445954_52f3b812bd42437769ce56b895db71f9-800x800.jpg\">\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/robot3t.com\/wp-content\/uploads\/2017\/07\/z1393202445954_52f3b812bd42437769ce56b895db71f9-800x800.jpg\" class=\"attachment-large size-large\" alt=\"\" srcset=\"https:\/\/robot3t.com\/wp-content\/uploads\/2017\/07\/z1393202445954_52f3b812bd42437769ce56b895db71f9-800x800.jpg 800w, https:\/\/robot3t.com\/wp-content\/uploads\/2017\/07\/z1393202445954_52f3b812bd42437769ce56b895db71f9-400x400.jpg 400w, https:\/\/robot3t.com\/wp-content\/uploads\/2017\/07\/z1393202445954_52f3b812bd42437769ce56b895db71f9-768x768.jpg 768w, https:\/\/robot3t.com\/wp-content\/uploads\/2017\/07\/z1393202445954_52f3b812bd42437769ce56b895db71f9-300x300.jpg 300w, https:\/\/robot3t.com\/wp-content\/uploads\/2017\/07\/z1393202445954_52f3b812bd42437769ce56b895db71f9-600x600.jpg 600w, https:\/\/robot3t.com\/wp-content\/uploads\/2017\/07\/z1393202445954_52f3b812bd42437769ce56b895db71f9-100x100.jpg 100w, https:\/\/robot3t.com\/wp-content\/uploads\/2017\/07\/z1393202445954_52f3b812bd42437769ce56b895db71f9.jpg 2000w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\t\t\n<style>\n#image_1156228084 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-933456194\" class=\"col medium-4 small-6 large-4\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_1717974662\">\n\t\t<a class=\"image-lightbox lightbox-gallery\" title=\"\" href=\"https:\/\/robot3t.com\/wp-content\/uploads\/2017\/07\/z1393202702567_7df3596e3c8b177f6806815c4a5b905d-800x800.jpg\">\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/robot3t.com\/wp-content\/uploads\/2017\/07\/z1393202702567_7df3596e3c8b177f6806815c4a5b905d-800x800.jpg\" class=\"attachment-large size-large\" alt=\"\" srcset=\"https:\/\/robot3t.com\/wp-content\/uploads\/2017\/07\/z1393202702567_7df3596e3c8b177f6806815c4a5b905d-800x800.jpg 800w, https:\/\/robot3t.com\/wp-content\/uploads\/2017\/07\/z1393202702567_7df3596e3c8b177f6806815c4a5b905d-400x400.jpg 400w, https:\/\/robot3t.com\/wp-content\/uploads\/2017\/07\/z1393202702567_7df3596e3c8b177f6806815c4a5b905d-768x768.jpg 768w, https:\/\/robot3t.com\/wp-content\/uploads\/2017\/07\/z1393202702567_7df3596e3c8b177f6806815c4a5b905d-300x300.jpg 300w, https:\/\/robot3t.com\/wp-content\/uploads\/2017\/07\/z1393202702567_7df3596e3c8b177f6806815c4a5b905d-600x600.jpg 600w, https:\/\/robot3t.com\/wp-content\/uploads\/2017\/07\/z1393202702567_7df3596e3c8b177f6806815c4a5b905d-100x100.jpg 100w, https:\/\/robot3t.com\/wp-content\/uploads\/2017\/07\/z1393202702567_7df3596e3c8b177f6806815c4a5b905d.jpg 2000w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\t\t\n<style>\n#image_1717974662 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-512306246\" class=\"col medium-4 small-12 large-4\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n<p><a href=\"\/wp-content\/uploads\/2017\/04\/bob3t-03.png\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2017\/04\/bob3t-03.png\" alt=\"BOB3T-03 wiring\" \/><\/a><\/p>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n<h3 class=\"r3-spec-title\">Frequently asked questions<\/h3>\n<p><strong>My PC has no parallel (LPT) port. Can I still use it?<\/strong><br \/>You need a PC with an LPT port or a PCI\/PCIe parallel port card supported by your CNC software. Contact us if you need advice on a USB or Ethernet motion controller instead.<\/p>\n<p><strong>Does it work with Robot3T THC and ohmic sensors?<\/strong><br \/>Yes. It is commonly used together with our THC3T-02 height controllers and OS3T-01 ohmic sensor on Mach3 plasma machines.<\/p>\n<p><strong>Can it control spindle speed?<\/strong><br \/>Yes. Connect the 0\u201310 V output to your inverter&#8217;s analog input and use a relay output for spindle on\/off.<\/p>\n<p><strong>Do you ship outside Vietnam?<\/strong><br \/>Yes. Contact sales@robot3t.com for a quote including shipping to your country.<\/p>\n<div class=\"r3-cta\">\n<h3>Building or upgrading a CNC plasma machine?<\/h3>\n<p>Tell us your machine, drivers and software. Our engineers will recommend a complete control set \u2013 breakout board, THC, sensors \u2013 and quote at no cost.<\/p>\n<a href=\"\/en\/contact\/\" class=\"button primary\" style=\"border-radius:99px;\">\n\t\t<span>Request a quote<\/span>\n\t<\/a>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>LPT breakout board for CNC plasma and routers: full Mach3 support, up to 5 axes with LED status, separate USB\/external power to protect your PC, opto-isolated 0\u201310 V spindle output, 2 relays, 5 inputs for E-stop and limits, charge pump support, pin names printed on board. Made in Vietnam by Robot3T.<\/p>\n","protected":false},"featured_media":3057,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[114],"product_tag":[],"class_list":["post-2168","product","type-product","status-publish","has-post-thumbnail","product_cat-mechanized-cutting","first","instock","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/robot3t.com\/en\/wp-json\/wp\/v2\/product\/2168","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/robot3t.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/robot3t.com\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/robot3t.com\/en\/wp-json\/wp\/v2\/comments?post=2168"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/robot3t.com\/en\/wp-json\/wp\/v2\/media\/3057"}],"wp:attachment":[{"href":"https:\/\/robot3t.com\/en\/wp-json\/wp\/v2\/media?parent=2168"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/robot3t.com\/en\/wp-json\/wp\/v2\/product_brand?post=2168"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/robot3t.com\/en\/wp-json\/wp\/v2\/product_cat?post=2168"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/robot3t.com\/en\/wp-json\/wp\/v2\/product_tag?post=2168"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}