a5:bed-levelling-probe
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| a5:bed-levelling-probe [2019/04/07 02:17] – [Full Firmware & Hardware Modification Guide] cs2000 | a5:bed-levelling-probe [2019/04/07 02:52] – [Full Firmware & Hardware Modification Guide] cs2000 | ||
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| Now the hard parts are done, you need to complete the setup of the IR sensor and do some testing, so lets continue. | Now the hard parts are done, you need to complete the setup of the IR sensor and do some testing, so lets continue. | ||
| - | - First, we need be sure that your Z axis carriage is actually level. As the A5 uses two steppers and two threaded rods to hold the " | + | - First, we need be sure that your Z axis carriage is actually level. As the A5 uses two steppers and two threaded rods to hold the carriage in place, this can get out of alignment so one side can be higher than than the other. |
| - To correct/ | - To correct/ | ||
| - | - If the measurements are out, turn the printer off and use your hand to manually move the threaded rod couplers to manually | + | - If the measurements are out, turn the printer off and use your hand to manually move the threaded rod couplers to move one side up or down. It doesn' |
| - Turn on the printer and using the LCD or a GCODE console such as Pronterface, | - Turn on the printer and using the LCD or a GCODE console such as Pronterface, | ||
| - Use the LCD in the MOVE menu and Move Z down slowly (0.01mm steps) until the probe triggers. This is when the red LED light comes on. | - Use the LCD in the MOVE menu and Move Z down slowly (0.01mm steps) until the probe triggers. This is when the red LED light comes on. | ||
| - | - Take the current Z value on the screen and negate it. (so a value shown of 1.6 becomes -1.6), this is the offset between your print Nozzle and the sensor height. | + | - Take the current Z value on the printers LCD screen and negate it. (so a value shown of 1.6 becomes -1.6), this is the offset between your print Nozzle and the sensor height. |
| - | - You may find the nozzle wont go low enough, if so, use a GCODE console of some sort (Pronterface) and alter the Z height offset | + | * My Screen showed 1.6mm, I perfonally found I needed |
| - | * If you want to lower the head by 0.02mm then you would issue the command "M851 Z-1.2" or to raise it by 0.02mm, its "M851 Z-0.8". Yes, INCREASING the number LOWERS the head, backwards to what youd thing logically, but were using a - sign before it, so the logic is correct. Issue a M500 command to save this value in the EEPROM once you've figured out what it is. In my case, a value of -1.80 works well.\\ | + | * If you want to lower the head by 0.02mm then you would issue the command "M851 Z-1-8" or to raise it by 0.02mm, its "M851 Z-1.4". Yes, INCREASING the number LOWERS the head, backwards to what you'd think logically, but were using a - sign before it, so the logic is correct. Issue a M500 command to save this value in the EEPROM once you've figured out what it is. In my case, a value of -1.80 works well.\\ |
| - | - Next, do a bed level using the LCD and the print bed levelling knobs so that the bed is as level as you can get it using this method, basically proceed to set the correct 0.2mm layer height as if you don't have an IR sensor.\\ | + | - Next, do a bed level using the LCD and the print bed levelling knobs so that the bed is as level as you can get it using this method, basically proceed to set the correct 0.2mm layer height |
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| And your done! From now on, the printhead will perform an automatic mesh bed level using the IR probe before every single print. | And your done! From now on, the printhead will perform an automatic mesh bed level using the IR probe before every single print. | ||
| - | In standard probing mode,This adds about 30 seconds to your print time and ensures that crucial first layer goes down perfect every time! | + | In standard probing mode, This adds about 30 seconds to your print time and ensures that crucial first layer goes down perfect every time! |
| If you also performed the ultra slow mods to get a better probe height, this takes a few minutes per probe cycle. Since we've saved the mesh to the EEPROM, you may wish to do this mesh periodically and just use the below as your start-up commands since we can call the mesh data back from EEPROM. | If you also performed the ultra slow mods to get a better probe height, this takes a few minutes per probe cycle. Since we've saved the mesh to the EEPROM, you may wish to do this mesh periodically and just use the below as your start-up commands since we can call the mesh data back from EEPROM. | ||
a5/bed-levelling-probe.txt · Last modified: 2020/12/25 02:13 by 127.0.0.1
