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MiloSplit - a Milo v1.5 junction box
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Junction box and custom PCB to gather all electrical signals and merge them into one Harking-like connector
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Model information
- Source
- Printables
- Category
- Electronics
- License
- Creative Commons — Attribution
MiloSplit
Description
Gather all your electrical signals at the back and merge them into one single Harking-like connector to form an umbilical between your Milo and the electrical cabinet.
Endstops, toolsetter, touchprobe, coolant all go thru the PCB to gather 5V, 24V and GND and minimize the number of wires.
Motors and spindle are attached directly to the 32-pin connector.
All links below are NOT affiliated!
BOM
- Custom PCB → see separate BOM below
- 32-pin Harting-like connector: https://www.aliexpress.com/item/1005006021811986.html
- Conduit AD 34.5mm: https://www.aliexpress.com/item/1005006819431285.html
1m is enough for Milo v1.5 and CASA - Connector to conduit PG gland PG29-AD34.5: https://www.aliexpress.com/item/1005006819431285.html
- Printed parts: base and junction box, electrical cabinet panel
- 4x M5 T-nut*
- 4x M5x8mm BHCS*
- 8x M4x10mm SHCS
- 8x M4 heat insert M4x6x4: https://www.aliexpress.com/item/4000232925592.html
- 2x M3 heat insert Voron-style M3x5x4: https://www.aliexpress.com/item/4000232925592.html
- 2x M3x6mm BHCS/SHCS
- Nx PG7/PG9/PG11 glands depending on your cables: https://www.aliexpress.com/item/1005003296249352.html
Standard LDO Kit with mist coolant valve and touchprobe 5x PG7, 2x PG9, 1x PG11
*you can modify the holes in CAD and get away with M3 here. I had M5 BHCS on my desk at the time ;)
PCB BOM
- 4x JST XH 2-pin vertical - socket, plug and crimps
- 2x JST XH 3-pin vertical - socket, plug and crimps
- 8x 2.54mm header jumpers - 1x mandatory, the rest if you want to use the AUX port
- 38x 2.54mm header pins - 3x mandatory, the rest if you want to use the AUX port
- 1x 16-pin 3.5mm pitch 45° terminal block: https://www.digikey.ch/short/j55jpmvw
- 1x 7-pin 3.5mm pitch 45° terminal block: https://www.digikey.ch/short/2jbqwqqz
Links
- PCB on Github: https://github.com/kohlerj/MiloSplit
- CAD on OnShape: https://cad.onshape.com/documents/acb0c9f7b5aac43bfb47727a/w/2e693265a8aca57f7af708bc/e/f9920cffbfa1435620d65daf
- Modified rear bay interface on OnShape: https://www.printables.com/model/1209554-rear-bay-interface-plate-for-milosplit