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--- projects:welcome [2017/11/14 19:36]
jerzydziewierz
+++ projects:welcome [2017/11/14 19:40]
jerzydziewierz
@@ Line 5: / Line 5: @@
 {{:projects:krautkramer_zero_in_cue.jpg?400|}}
-== machine size and weight ==
+== Machine size and weight ==
 Outermost dimensions with some margin:
@@ Line 15: / Line 15: @@
-The machine itself is very robust
+The machine itself is very robust.
-It is likely approx. 40 years old. There is no driver electronics whatsoever, but there is:
-  * high precision rails on both axes. No play. No rust, no damage.
+It is likely approx. 40 years old, but for what it is, it has seen only a very light use. It was used to guide an ultrasonic probe in a water tank. The base, and the bridge is solid steel; it is very rigid. It weights no less than 300kg.
-  * Linear motors. There are noiseless. Known coil resistance: 14 ohms. Tested working with 2A current, altough, we'd have to test how much can they take before overheating. Ideally, they need onboard temperature monitor.
-  * Ultra high precision linear encoders, with sine-cosine output. Tested works at 5V supply.
+There are no driver electronics whatsoever, but there is:
-  * elastic covers to all axes. This makes it a very pro-looking machine.
+  * high precision rails on both axes. No play. No rust, no damage. Noiseless.
+  * Linear motors. These are noiseless. Known coil resistance: 14 ohms. Tested working with 2A current, although, we'd have to test how much can they take before overheating. Ideally, they need onboard temperature monitor.
+  * Ultra high precision linear encoders, with a sine-cosine output. Tested works OK at 5V supply.
+  * elastic covers on both axes. This makes it a very pro-looking machine.
+== What is missing: ==
-What is missing:
   * We need to build the servo amplifier and the motion controller for it.
   * We need to build a motion controller for it. *machinekit* has been suggested. As far as I understand, the club has a beaglebone black waiting for such opportunity

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