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2 layers50.8 × 24.1 mmEmbedded debug, the printed circuit board in 3D

The embedded debug board can be used to provide access to Target MCU debug UART lines carried on unused traces of a 10pin SWD connector

Size
50.8 × 24.1 mm
Copper layers
2
Thickness
1.6 mm
Parts
23
Nets
37
Pads
111
Tracks, vias
240, 45
Pours
2
Routed
Yes
KiCad
KiCad 5 (file 20171130)
Created
11 Aug 2020
Updated
16 Nov 2021

Overview

Embedded debug is an open-source printed circuit board by stephendpmurphy, from the stephendpmurphy/embedded-debug repository on GitHub, published under the CC-BY-SA-4.0 licence. It is a 2-layer board of 50.8 × 24.1 mm with 23 parts on 37 nets, routed with 240 tracks and 45 vias.

It is built around the FT230XQ-R. Its parts include 7 resistors, 6 connectors, 4 diodes, 2 capacitors and 1 IC. It belongs with the interfaces and adapters boards of this library.

Main components

1

README

README.md

embedded-debug

CC_BY_SA

This debug board allows two unused traces of a 10pin (1.27mm pitch) connector to be broken out and used for a UART RX & TX line from the target MCU. These UART lines can be used by the Target to send debug print statements through the programming connector, to the USB bridge, and then displayed on a PC terminal. This is useful since board space is no longer needed on the target for any sort of extra headers or test pads for debug data.

This is a revamp of an existing project ARM-Debug which was originally designed in Eagle CAD, while this project is designed using KiCAD

Parts

23
QtyValueFootprintReferences
41kResistor_SMD:R_0402_1005MetricR4, R5, R6, R7
4LEDLED_SMD:LED_0603_1608MetricD1, D2, D3, D4
3Conn_02x05_Odd_EvenConnector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical_SMDJ1, J2, J6
2.1uCapacitor_SMD:C_0402_1005MetricC1, C2
227Resistor_SMD:R_0402_1005MetricR1, R2
2MountingHoleMountingHole:MountingHole_2mmH1, H2
110kResistor_SMD:R_0402_1005MetricR3
1AVR-ISP-6Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_VerticalJ5
1Conn_01x02Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_HorizontalJ3
1FT230XQPackage_DFN_QFN:QFN-16-1EP_4x4mm_P0.65mm_EP2.1x2.1mmU1
1SW_PushButton_Switch_SMD:Panasonic_EVQPUJ_EVQPUASW1
1USB_C_Receptacle_USB2.0Connector_USB:USB_C_Receptacle_GCT_USB4085J4

Questions

How big is the Embedded debug PCB?

It measures 50.8 × 24.1 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Embedded debug use?

23 parts, built around the FT230XQ-R. 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 Embedded debug KiCad files?

From the stephendpmurphy/embedded-debug repository on GitHub, at the commit this page was made from: the board is embedded-debug/embedded-debug.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Embedded debug design in my own project?

Its repository publishes it under the CC-BY-SA-4.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

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