Ender Extender Under bed electronics box for standard boards and Raspberry Pi

thingiverse

After trying to find an electronics box to house both the Ender Melzi board and a Raspberry Pi for an Ender Extender, I couldnt find one that I liked so I made my own. The box fits under the bed and in the gap where the electronics once were housed. I have made the box to be big enough to accommodate the Ender 3 mother board, a Raspberry Pi, 2 buck converters and also a fan to keep everything cool Installation is simple. I have not added holes for the mother board so that people can drill them out to the size they are happy with and to fit the board diameter for the bolts. I however used the bolts that were originally keeping it secure in the main case. For the Raspberry pi, there are 4 points to be able to secure it to the bed. I have used the same fan dimensions as the stock one however I will be upgrading this to a silent fan just to make sure its quiet. 2 Buck converters to be used if you so wish. I have put holes around the top and sides to make sure that there is a lot of airflow as in my first design it got a little toasty, the ones at the rear and the front come in handy for the heated bed cabling and any USB's like Webcams that you want to run into the box. This has been designed around using Octoprint to control the printer and as such I have not made access holes for the Micro SD slot on either the Main Board or the Pi. I haven't had to touch the settings since I got them dialled in so its more a set up and forget affair for me with the printer being fully controlled from Octoprint I have made a slot on the left of the cover to be able to bring out and extruder, and hot end wiring that is needed. To secure it to the printer just 2 bolts and T nus are needed. I used the original bolts that were holding the top of the metal electronics case at the rear and the one at the rear for the bottom of the case with 2 T nuts. To bolt the top of the case to the main bofy I used 5 M3x12 bolts This only needs supports for the 2 tabs at the outside, your printer should be able to bridge the ventilation holes with ease. This is a tight fit underneath the printer with about 5mm of clearence to the bed levelling bolts using standard Vwheels, so whilst the top seems slightly flimsy, to make it thicker means it may foul with these bolts dependent on how tight you are compressing your springs/rubber. If it does foul I suggest using a few washers under the spring/rubber to raise the bolts a few MM's, I however haven't had it catch To print this as one piece it needs to be done on the Ender Extender due to the size of it. SCALING - Please be aware if this comes in massively oversize, please scale it from 100% to 10% and you will be good to print with the correct dimensions Please note - Photos were of a previous version, I have tweaked the positioning of the fan and the Pi location to accomodate the USB cabled for Webcam, Printer and LED's a little more. I will update the photos once the final print had finished and it is installed :)