4 layers35 × 43.2 mm Bob, the printed circuit board in 3D

Bob

Orbtrace & supporting hardware circuit diagrams etc.

Size: 35 × 43.2 mm
Copper layers: 4
Thickness: 1.59 mm
Parts: 89
Nets: 61
Pads: 303
Tracks, vias: 785, 134
Pours: 5
Routed: Yes
KiCad: KiCad 6 (file 20211014)
Created: 29 May 2021
Updated: 11 Oct 2023

Overview

Bob is an open-source printed circuit board by orbcode, from the orbcode/orbtrace_hw repository on GitHub. It is a 4-layer board of 35 × 43.2 mm with 89 parts on 61 nets, routed with 785 tracks and 134 vias.

It is built around the MAX40200AUK, M24C02-FMH6TG and GZ2012D601TF. Its parts include 34 resistors, 29 capacitors, 10 ICs, 6 connectors and 4 diodes.

Main components

README

README.md

ORBTrace Hardware

This is the repository for various hardware for the ORBTrace project. There are various bits and pieces here but the most important ones are;

ORBTrace Mini V1.0
ORBMule demo board
Breakout board for PMOD

You can also find the openSCAD source materials, and vinyl graphics, for the ORBTrace Mini V1 case.

These materials are provided in open form to learn from and improve on. We have deliberately chosen to not provide Gerbers for ORBTrace mini or STLs for the caseworks since your manufacturing processes are likely different to ours. Drop a note if you need those.

Parts

Qty	Value	Footprint	References
18	100nF	Capacitor_SMD:C_0402_1005Metric	C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23, C24, C25, C26, C27 +2
10	100K	Resistor_SMD:R_0402_1005Metric	R21, R22, R23, R24, R25, R26, R27, R28, R29, R30
10	33R	Resistor_SMD:R_0603_1608Metric	R9, R10, R11, R12, R13, R14, R15, R16, R17, R18
6	470nF	Capacitor_SMD:C_0402_1005Metric	C6, C7, C8, C9, C10, C11
5	10uF	Capacitor_SMD:C_0603_1608Metric	C1, C2, C3, C4, C5
5	SN74AVC2T245RSWR	bob2:UQFN-10	U5, U6, U7, U8, U9
4	1K	Resistor_SMD:R_0402_1005Metric	R5, R6, R7, R8
4	GZ2012D601TF	Inductor_SMD:L_0805_2012Metric	L1, L2, L3, L4
3	39K	Resistor_SMD:R_0402_1005Metric	R1, R2, R20
2	1R	Resistor_SMD:R_0603_1608Metric	R3, R4
2	2K2	Resistor_SMD:R_0402_1005Metric	R33, R34
2	DNP	Resistor_SMD:R_0603_1608Metric	R31, R32
2	Fiducial	Fiducial:Fiducial_0.75mm_Mask1.5mm	FID1, FID2
2	Green	LED_SMD:LED_0603_1608Metric	D3, D4
2	MAX40200AUK	Package_TO_SOT_SMD:SOT-23-5	U2, U3
2	Yellow	LED_SMD:LED_0603_1608Metric	D1, D2
1	27K	Resistor_SMD:R_0402_1005Metric	R19
1	5V In	Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical	J3
1	DEBUG HEADER	bob2:PinHeader_2x05_P1.27mm_Vertical_SMD	J6
1	DEBUG+TRACE HEADER	bob2:PinHeader_2x10_P1.27mm_Vertical_SMD	J7
1	M24C02-FMH	bob2:DFN-5	U4
1	ORB HEADER	Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical	J5
1	PMOD1	bob2:pmod_pin_array_6x2	J1
1	PMOD2	bob2:pmod_pin_array_6x2	J2
1	SLG46582_DUAL_LDO	bob2:STQFN-20	U1
1	TLA2024	bob2:PQFP-N10	U10

Questions

How big is the Bob PCB?

It measures 35 × 43.2 mm and has 4 copper layers, 1.59 mm thick.

What parts does the Bob use?

89 parts, built around the MAX40200AUK, M24C02-FMH6TG and GZ2012D601TF. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Bob KiCad files?

From the orbcode/orbtrace_hw repository on GitHub, at the commit this page was made from: the board is hw/bob2/bob.kicad_pcb and its schematic hw/bob2/bob.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Bob design in my own project?

Its repository states no licence, so its author keeps all rights: ask orbcode before reusing the design.

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/orbcode-orbtrace-hw-bob-2" title="Bob in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/orbcode-orbtrace-hw-bob-2.jpg" alt="Bob" width="1200" height="900">

A picture that opens the board, for a README

[![Bob](https://pcbkit.io/embed/boards/orbcode-orbtrace-hw-bob-2.jpg?size=s)](https://pcbkit.io/boards/orbcode-orbtrace-hw-bob-2)

Source

Repository: orbcode/orbtrace_hw
Board file: hw/bob2/bob.kicad_pcb
Commit: aa6b16f
Licence: Not stated

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