Differences

This shows you the differences between two versions of the page.

--- mcmaster:x-ray_cnc [2015/08/01 03:04] – mcmaster
+++ mcmaster:x-ray_cnc [2015/08/03 06:10] (current) – removed mcmaster
@@ Line 1: / Line 1: @@
-====== Voltage compatibility ======
-Motor/driver:
-    * Logic Threshold (Logic 0): < 0.8 VDC
-    * Logic Threshold (Logic 1): > 2.2 VDC
-BBB: While the GPIO pins on the BeagleBone Black run at 3.3 Volts, …
-Sounds like should be able to directly hook BBB output to MDrive17+.  Revisit if there are any signals that need to go vice versa
-====== x-ray sensor ======
-Gendex/Dexis GXS700
-Source: local
-====== x-ray head ======
-GE 1000.  Controlled with DLI WPS7 attached to several variacs for filament/voltage control
-Source: eBay
-====== Controller ======
-Beagle Bone Black running LinuxCNC fork
-[[http://linuxcnc.org/docs/html/common/python-interface.html|Python reference]]
-  * Was very easy to get stuff working
-[[http://www.machinekit.io/|http://www.machinekit.io/]]
-[[http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#BBW.2FBBB_.28All_Revs.29_Machinekit_2|http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#BBW.2FBBB_.28All_Revs.29_Machinekit_2]]
-Pre-built images
-    * wget [[https://rcn-ee.com/rootfs/bb.org/testing/2015-06-29/machinekit/bone-debian-7.8-machinekit-armhf-2015-06-29-4gb.img.xz|https://rcn-ee.com/rootfs/bb.org/testing/2015-06-29/machinekit/bone-debian-7.8-machinekit-armhf-2015-06-29-4gb.img.xz]]
-    * md5sum: fba67a50c02eec93672bbc76fc2bca7c
-System Reference Manual (SRM): [[http://www.adafruit.com/datasheets/BBB_SRM.pdf|http://www.adafruit.com/datasheets/BBB_SRM.pdf]]
-u/p: machinekit / machinekit
-===== No-cape =====
-[[http://blog.machinekit.io/p/machinekit_16.html|http://blog.machinekit.io/p/machinekit_16.html]]
-<code>
-Select the example configuration that matches your hardware (I suggest starting with the CRAMPS configuration if you don't have any hardware) and launch LinuxCNC
-</code>
-<code>
-NOTE: If you want to switch between configurations that load unique hardware overlays, you should reboot
-</code>
-[[https://raw.githubusercontent.com/cdsteinkuehler/bobc_hardware/CRAMPS-v2.2.1/CRAMPS/CRAMPS.pdf|CRAMPS board schematic]]
-From reading schematic, default/intended pinout is:
-^Function ^OMAP pin ^BBB pin ^Note |
-|X_STEP |EHRPWM2B |P8.13 |  |
-|X_DIR |GPIO1_12 |P8.12 |  |
-|X-MIN |  |  |  |
-|X-MAX |  |  |  |
-|Y_STEP |GPIO1_15 |P8.15 |  |
-|Y_DIR |GPIO0_26 |P8.14 |  |
-|Y-MIN |  |  |  |
-|Y-MAX |  |  |  |
-|Z_STEP |EHRPWM2A |P8.19 |  |
-|Z_DIR |GPIO2_1 |P8.18 |  |
-|Z-MIN |  |  |  |
-|Z-MAX |  |  |  |
-|ESTOP |  |  |  |
-|ESTOP_SW |  |  |  |
-===== BeBoPr++ =====
-I'm not sure if these are available for purchase (or even if I need it), but it has example configs and documentation
-Reading through the user guide
-Hmm this is unfortunate:
-<code>
-Each BeBoPr++ comes with a license for use of the PRUSS stepper driver firmware. This
-stepper driver is proprietary code that runs on a PRU co-processor and is stored in the
-BeBoPr++'s on-board EEPROM. The driver handles deterministic and accurate timing of the
-stepper pulses for all four axes simultaneously. It also generates the acceleration and
-deceleration ramps. Via the API†, custom applications can easily generate accurate stepper
-</code>
-Does this mean the PRU's are usually unusable?
-Probably not looks like there's also an open source version:
-<code>
-An open source code repository to build a 3D printer with the BeBoPr++ is available at
-https://github.com/modmaker/BeBoPr. This code uses one of the PRU coprocessors for the
-step pulse generation and can freely be changed.
-</code>
-Looks like LinuxCNC should have reasonable support out of the box
-<code>
-It has support for the BeBoPr since the original (first) BeBoPr and all software, including the
-PRU stepper code is open source. As a community effort, it evolves faster than the BeBoPr 3D
-printer code
-</code>
-====== XY stage ======
-From HSC Electronics
-TPI
-===== Motor =====
-<code>
-M DRIVE
-MOTOR + DRIVER
-PLUS
-MICROSTEPPING
-MCM17A-GVT-40
-203100065
-V3.0.02
-</code>
-What is the MCM series?  Evidently there are several variants of this
-Mine
-  * MCMXXX17A
-  * ??? inputs
-Step/direction input version
-  * [[http://motion.schneider-electric.com/downloads/datasheets/MDM17Plus.pdf|Datasheet]]
-  * MDMXXX174
-  * MDrive 17 Plus step and direction input
-  * SPI
-Programmable Motion Control version
-  * [[http://motion.schneider-electric.com/products/mdrive/mdrive_plus_motion_control.php?nema=17|Datasheet]]
-  * MDIXXX174
-  * Step/Direction I/O for electronic gearing
-  * RS-422/485
-Speed Control version
-  * [[http://motion.schneider-electric.com/downloads/manuals/MDO17_23_Plus.pdf|Datasheet]]
-  * MDOXXX174
-  * SPI
-Saw similar one on eBay:  IMS/SCHNEIDER MDRIVE 17 Plus STEPPER MOTOR MDI1PRD17B4
-    * RS-422/485 communication
-    * +12 to +48 VDC input voltage
-    * Up to 74.9 oz-in (52.9 N-cm) holding torque
-    * Robust programmable I/O (up to 8 general purpose points) with input filtering
-    * Powerful instruction set with advanced math functions using 1-2 character mnemonics
-    * Step/Direction I/O for electronic gearing.
-|DC input voltage |Range (includes back-EMF) |+12 to +48 VDC |
-|Power supply current requirement |Max per MDrivePlus (depends on voltage and load) |2.0 |
-|Aux-Logic supply |Voltage |+12 to +24 VDC |
-|Aux-Logic supply |Current requirement (max) |194 mA |
-|Operating Temperature |Measured at heat sink (non-condensing humidity) |85°C |
-|Operating Temperature |Measured at motor (non-condensing humidity) |100°C |
-Active microstepping?
-==== Cabling ====
-Y and Z go to 15 x 2 (30 pin) IDC cable
-X has its own cable going from inline to 4 x 2 IDC
-==== Parameter cable ====
-Parameter setup cable MD-CC300-000 or equivalent (USB to SPI)
-    * MD-CC300-001
-    * MD-CC302-001
-Parameter cable: [[http://motion.schneider-electric.com/downloads/datasheets/discontinued_prod/md_cc300_000.pdf|http://motion.schneider-electric.com/downloads/datasheets/discontinued_prod/md_cc300_000.pdf]]
-Found this cheap on eBay when I was looking for above:
-<code>
-MD-CC4
-USB to RS422 Comm Converter
-MD-CS300-400 REV-B 03/10
-</code>
-Might be useful for NEMA 23 (RS-422) but it turns out the manual had a typo…NEMA 17 is SPI, NEMA 23 is RS-422.  Seems inconsistent
-===== Original indexer =====
-<code>
-GUAVA TECHNOLOGIES, INC.
-GUAVA MOTION BOARD 2
-FAB 0400-0580 REV A
-ASSY 0400-0590 REV
-(C) 2008
-</code>
-"Millipore Takes Over Guava Technologies for $22.6M"
-Probably hard to find info on it
-Not worth the effort to figure out how it works.  Replace with beaglebone black
-===== Fixturing =====
-PanaVise PCB holder (already had it around)
-As centered won't be able to scan whole PCB.  Need to find a way to re-mount it
-==== Use original mast ====
-Need to drill new hole on side to use the entire scan area
-Allows adjusting PCB angle
-Need to mount mast to t-slot
-==== Re-mount rail ====
-Instead of using the mast put stand offs on both ends onto t-slot.  Maybe make an aluminum adapter if I need something more solid