Design

The SKBOWE is a 100% open source design. ¹

This page will stay updated with technical design details to help those DIY now that the order is closed.

Version 2.0.4 – Batch 1/2

PCB design files

• ExpressPCB: skbowe_2.0.4.pcb
• Gerber:  RQUX7861L.zip
• PDF:  skbowe_2.0.4_art.pdf

Update 9/12/19: Scott G. has shared the PCB on OSHPark upload:

https://oshpark.com/shared_projects/r1kDJuby

BOM (each unit – 2 per vehicle)

• 5x Capacitors (C1-C5) 565-4356-ND ELBK350ELL842AM40S 8400µF 35V Aluminum Electrolytic Capacitors Radial, Can 15 mOhm @ 100kHz 5000 Hrs @ 105°C 0.295″ (7.50mm) leads, 0.709″ Dia (18.00mm) x 1.634″ (41.50mm) Height. Datasheet: cap_datasheet.pdf
• 2x Diodes (D1-D2): 497-12305-ND STPS20SM60D Diode Schottky 60V 20A Through Hole TO-220AC diode_datasheet.pdf
• 1x Diode (D3): 1N4004GDITR-ND 1N4004 Diode Standard 400V 1A Through Hole DO-41 1n4004_datasheet.pdf
• 1x Resistor(R1): RNF14FTD10K0TR-ND 10k Ohm ±1% 0.25W, 1/4W Through Hole Resistor Axial Flame Retardant Coating, Safety Metal Film
• Enclosure: TF-2409TX + C-0204-N
• Potting: MG Chemicals 832TC-2L Thermally Conductive Black Epoxy Encapsulating and Potting Compound (15oz is enough to make 3-4 sets!)
• Wire: 14 AWG Gauge Tinned Marine Primary Wire – USA – USCG – ABYC – RoHS COMPLIANT – UL 1426 BOAT CABLE
• Braid: 1/4″ Tinned Copper Flat Braid – ROHS Nom. Circular Mills: 4200
• Connectors: 9005/9006 Male/Female 14-16AWG. Yellow 3M crimp rings 3/8″ stud

Instructions/Info

• Building:
  • Part 1: https://www.skbowe.com/a/2017/07/07/production-pcbs-arrived-now-the-fun-begins/
  • Part 2: https://www.skbowe.com/a/2017/07/10/building-skbowe-batch-1/
• Potting: https://www.skbowe.com/a/2017/07/11/skbowe-potting-day-1/

Notes

1. Why? Because I don’t want to have to keep building these myself. Seriously, someone steal this and sell them. I will gladly evaluate your quality, write a review, and redirect the order page to your website.