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@@ -22,14 +22,14 @@ Features:
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* High steprate
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* Look ahead (Keep the speed high when possible. High cornering speed)
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* Interrupt based temperature protection
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-* preliminary support for Matthew Roberts advance algorithm
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+* preliminary support for Matthew Roberts advance algorithm
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For more info see: http://reprap.org/pipermail/reprap-dev/2011-May/003323.html
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* Full endstop support
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* SD Card support
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* SD Card folders (works in pronterface)
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* SD Card autostart support
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-* LCD support (ideally 20x4)
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-* LCD menu system for autonomous SD card printing, controlled by an click-encoder.
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+* LCD support (ideally 20x4)
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+* LCD menu system for autonomous SD card printing, controlled by an click-encoder.
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* EEPROM storage of e.g. max-velocity, max-acceleration, and similar variables
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* many small but handy things originating from bkubicek's fork.
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* Arc support
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@@ -43,6 +43,7 @@ Features:
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* CoreXY kinematics (www.corexy.com/theory.html)
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* Configurable serial port to support connection of wireless adaptors.
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* Automatic operation of extruder/cold-end cooling fans based on nozzle temperature
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+* RC Servo Support, specify angle or duration for continuous rotation servos.
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The default baudrate is 250000. This baudrate has less jitter and hence errors than the usual 115200 baud, but is less supported by drivers and host-environments.
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@@ -52,17 +53,17 @@ Differences and additions to the already good Sprinter firmware:
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*Look-ahead:*
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-Marlin has look-ahead. While sprinter has to break and re-accelerate at each corner,
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-lookahead will only decelerate and accelerate to a velocity,
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+Marlin has look-ahead. While sprinter has to break and re-accelerate at each corner,
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+lookahead will only decelerate and accelerate to a velocity,
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so that the change in vectorial velocity magnitude is less than the xy_jerk_velocity.
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-This is only possible, if some future moves are already processed, hence the name.
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+This is only possible, if some future moves are already processed, hence the name.
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It leads to less over-deposition at corners, especially at flat angles.
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*Arc support:*
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Slic3r can find curves that, although broken into segments, were ment to describe an arc.
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Marlin is able to print those arcs. The advantage is the firmware can choose the resolution,
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-and can perform the arc with nearly constant velocity, resulting in a nice finish.
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+and can perform the arc with nearly constant velocity, resulting in a nice finish.
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Also, less serial communication is needed.
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*Temperature Oversampling:*
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@@ -91,7 +92,7 @@ After each reboot, it will magically load them from EEPROM, independent what you
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If your hardware supports it, you can build yourself a LCD-CardReader+Click+encoder combination. It will enable you to realtime tune temperatures,
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accelerations, velocities, flow rates, select and print files from the SD card, preheat, disable the steppers, and do other fancy stuff.
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-One working hardware is documented here: http://www.thingiverse.com/thing:12663
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+One working hardware is documented here: http://www.thingiverse.com/thing:12663
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Also, with just a 20x4 or 16x2 display, useful data is shown.
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*SD card folders:*
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@@ -198,7 +199,7 @@ Custom M Codes
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* M220 S<factor in percent>- set speed factor override percentage
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* M221 S<factor in percent>- set extrude factor override percentage
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* M240 - Trigger a camera to take a photograph
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-* M280 - set servo position absolute. P: servo index, S: angle or microseconds
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+* M280 - Position an RC Servo P<index> S<angle/microseconds>, ommit S to report back current angle
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* M300 - Play beepsound S<frequency Hz> P<duration ms>
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* M301 - Set PID parameters P I and D
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* M302 - Allow cold extrudes
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