{"id":231,"date":"2019-03-17T15:59:15","date_gmt":"2019-03-17T03:59:15","guid":{"rendered":"https:\/\/collingwood.me.uk\/blog\/?p=231"},"modified":"2019-03-18T02:24:22","modified_gmt":"2019-03-17T14:24:22","slug":"upgrading-the-wanhao-d7","status":"publish","type":"post","link":"https:\/\/collingwood.me.uk\/blog\/index.php\/upgrading-the-wanhao-d7\/","title":{"rendered":"Upgrading the Wanhao D7"},"content":{"rendered":"

The first part of this upgrade is dealt with in another post on my blog<\/a><\/p>\n

The Wanhao D7 has a lot of promise, but is let down badly by the pretty useless UV LED array – Due to the size, there is a pretty intense hotspot in the centre, while exposure drops off towards the edges of the build plate. This makes it impossible to get consistent results across the entire build plate.<\/p>\n

Phrozen released the ParaLED upgrade, which is a full size replacement for the UV source. As it is a generic upgrade, I have produced a shroud which allows you to remove the fan from the ParaLED heatsink and mount it on the mounting already present on the base of the D7. This has an added advantage of giving a more even airflow over the heatsink and eliminating the dead spot caused by the fan hub. The shroud also positions the ParaLED at the correct distance from the LCD. The ParaLED is becoming difficult to find, but if you google it, you may come up with some still for sale<\/p>\n

I have also removed the Wanhao board and replaced it with a Raspberry Pi running nanoDLP and a nanoDLP shield, making the machine stand-alone.<\/p>\n

Finally, I have replaced the stepper motor, coupler and leadscrew with an integrated motor\/leadscrew. This eliminates the inaccuracies caused by the coupler expanding and contracting.<\/p>\n

Procedure for setting up the nanoDLP shield are documented in an earlier post. The STL files, nanoDLP Machine Profile, etc are supplied here on Thingiverse<\/a><\/p>\n

I have used a 4.3″ Nextion. In case you want to use a different size screen (more easily supported by the nanoDLP\/Nextion integration), I have included the SolidWorks part file for the front cover in the Thingiverse project so that you can adjust the cutout and mounting lugs to suit your screen. If you are using the 4.3 inch screen, I have created HMI and TFT files based on the HMI for the 3.2 inch screen, and included them in the Thingiverse project for you to use when setting up your Nextion screen<\/p>\n

In addition to the D7, Nextion and ParaLED, you will need the following:<\/p>\n