Wanhao D7 ParaLED, 4.3 inch Nextion and nanoDLP Shield v1.1 Upgrade

thingiverse

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. 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. I have also removed the Wanhao board and replaced it with a Raspberry Pi running nanDLP and a nanoDLP shield. 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. For full writeups, see my blog pages here: https://collingwood.me.uk/blog/index.php/raspberry-pi-and-the-nanodlp-shield-v1-1/ https://collingwood.me.uk/blog/index.php/upgrading-the-wanhao-d7/ THESE WILL ALWAYS BE THE MOST UP TO DATE. IT IS RECOMMENDED YOU FOLLOW THE STEPS ON THE BLOG RATHER THAN THE ONES ON THINGIVERSE!