DemonDeltaMicro - Lipo Pack Addon Module

thingiverse

30-12-17 CRUCIAL SAFETY WARNING - I HAVE NOW ON TWO OCCASIONS HAD THIS PRINTER TIP OVER, ITS EXTREMELY TALL AND NARROW DESIGN IS THE MAIN CAUSE OF THE PROBLEM. PLEASE SECURE THE PRINTER TO THE BATTERY UNIT WITH THE SCREWS IMMEDIATELY. FURTHERMORE, CONSIDER ADDING ANOTHER FORM OF RESTRAINT TO ENSURE SAFETY. IT SEEMS THAT THE WEIGHT OF THE SPOOL WHEN FULL ON TOP IS CAUSING THE TIPPING ISSUE. I WILL DESIGN A NEW SPOOL HOLDER AS SOON AS POSSIBLE. Update 17-09-17 - Modified the box and lid to fit together seamlessly with countersunk m3 screws. There are also blocks which will fit perfectly into the base of the DemonDeltaMicro printer. I have also put screw holes through and updated the listing for the printer base on its thingiverse page. Update: After my first few prints, I managed to print a car-shaped cookie cutter (PLA with heated bed), around half of a 75% scale benchy, which came off the bed after I turned the heater off partway through, and then around 80% of a 75% scale benchy with no heat, on a PEI surface instead. BMS cut the pack off when the cells got down to 3.0v so it didn't complete. But that's around 3 hours of printing time with a fully charged pack, no issues with the prints themselves, in fact, the high voltage speeds up the heaters and makes the motors quieter. Some serious testing both with/without heating to see how long the pack lasts yet to be done. Okay so want a really portable printer? Check out this video: https://youtu.be/WxNGG_h4XqM This add-on module for the DemonDeltaMicro printer gives you a battery pack that could run the machine for 2-3 hours, depending on usage. The high voltage of 16.8v will speed up bed heating and nozzle heating. Please note that this is an advanced project, and it's recommended to have some experience with electronics before attempting it. Also, make sure to follow all safety precautions when working with batteries and electrical components. Here are the steps to assemble the battery pack: 1. Connect the lipo monitor to the balance leads of the battery pack. 2. Connect the DPDT switch to the positive output of the battery pack. 3. Connect the voltmeter/ammeter unit to the positive output of the DPDT switch and the negative output of the switch. 4. Use heavy duty RC car connectors to create an output for the pack, use the corresponding connectors on the printer. 5. Once everything is connected, attach the lid by drilling some 3.2mm countersunk holes in the lid, and 2.8mm holes in the battery box. This module can then be connected to the printer, by sitting it on top and drilling some similar 3.2/2.8mm holes through the side of the base triangle of the printer. Either use the battery unit, which can be charged with a lipo charger capable of charging 4S pack, or use the mains adaptor. At this time there is no way to connect both at the same time and effectively create a UPS unit, maybe this will come later.