<p>I recently burnt out one of the MOSFETS on my RAMPS 1.4 board on my Sintron Kossel clone so have upgraded it to a RAMPS 1.6.
Now my printer seems to only print 50 % of the intended size.</p>
<p>After the machine homes it only comes down about 50 % of the distance and so starts printing in mid air.</p>
<p>I thought it might have been the driver steps? The DRV 8825 drivers are 32 steps instead of 16. I changed this value in the firmware but it didn't make any difference.</p>
<p>Any suggestions?</p>

[{'answer_id': 19538, 'author': 'Trish', 'author_id': 8884, 'author_profile': 'https://3dprinting.stackexchange.com/users/8884', 'pm_score': 2, 'selected': False, 'text': '<p>Data from Firmware is not written into EEPROM on its own after updating your firmware. You need to send a <code>M502</code> to &quot;seed&quot; the firmware numbers as that is restoring the &quot;default&quot; settings in it. If you are unsure what is currently the EEPROM setting, use <code>M503</code> first.</p>\n'}, {'answer_id': 19540, 'author': 'Eduard Sukharev', 'author_id': 10944, 'author_profile': 'https://3dprinting.stackexchange.com/users/10944', 'pm_score': 1, 'selected': False, 'text': '<p>If you changed you stepper drivers here\'s a list to check:</p>\n<ol>\n<li>Microstepping Jumpers</li>\n<li>In Marlin Configuration.h:</li>\n</ol>\n<ul>\n<li><code>X_DRIVER_TYPE</code>, <code>Y_DRIVER_TYPE</code>, <code>Z_DRIVER_TYPE</code> and<br />\n<code>E0_DRIVER_TYPE</code></li>\n<li><code>DEFAULT_AXIS_STEPS_PER_UNIT</code></li>\n<li><code>INVERT_X_DIR</code>, <code>INVERT_Y_DIR</code>, <code>INVERT_Z_DIR</code> and <code>INVERT_E0_DIR</code></li>\n</ul>\n<ol start="3">\n<li>In Marlin Configuration_adv.h:</li>\n</ol>\n<ul>\n<li><code>MINIMUM_STEPPER_POST_DIR_DELAY</code>, <code>MINIMUM_STEPPER_PRE_DIR_DELAY</code>, <code>MINIMUM_STEPPER_PULSE</code>, <code>MAXIMUM_STEPPER_RATE</code></li>\n<li>Other driver-specific constants</li>\n</ul>\n<ol start="4">\n<li>EEPROM settings stored on the control board (use <code>M503</code> to read current settings).</li>\n</ol>\n'}]
['https://3dprinting.stackexchange.com/questions/19537', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/34443/']