{"id":912,"date":"2015-03-06T14:50:25","date_gmt":"2015-03-06T14:50:25","guid":{"rendered":"http:\/\/blog.amberspyglass.co.uk\/?p=912"},"modified":"2015-03-30T11:16:43","modified_gmt":"2015-03-30T10:16:43","slug":"gaups-1-1","status":"publish","type":"post","link":"https:\/\/amberspyglass.co.uk\/blog\/2015\/03\/06\/gaups-1-1\/","title":{"rendered":"GAUPS 1.1"},"content":{"rendered":"

We’re running out of GAUPS shields. I took advantage of this and I updated the design. It is now compatible with the Arduino R3 pinout: it takes power for the digital side from IOREF, not from the 5 V pin. For older Arduinos or shields, there are solder bridges on the back of the board to configure it for either 5 volts or 3.3 volts. The IOREF solder bridge (the default choice) is shorted by a cuttable trace.\"\"<\/a><\/p>\n

The fourth driver can still be used as its own axis, or as a second driver on the Y axis. However, I have replaced the header and the two jumpers with solder bridges, pre-wired for dual-Y operation. To get a separate fourth axis, cut the DY traces and bridge the A pads.\"\"<\/a>The savings from not including a header and a pair of jumpers that 95% of the users don’t need almost exactly offsets the cost of the R3 Arduino headers (four additional pins total).<\/p>\n

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