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2 layers65 × 56 mmCc1101-expansion board, the printed circuit board in 3D

Cc1101-expansion board

ds-kiel/grace

GRACE: GPIO tracing for distributed IoT testbeds

Size
65 × 56 mm
Copper layers
2
Thickness
1.6 mm
Parts
8
Nets
41
Pads
72
Tracks, vias
81, 2
Pours
1
Routed
Yes
KiCad
KiCad 5 (file 20171130)
Created
8 Apr 2022
Updated
23 Sep 2022

Overview

Cc1101-expansion board is an open-source printed circuit board by ds-kiel, from the ds-kiel/grace repository on GitHub. It is a 2-layer board of 65 × 56 mm with 8 parts on 41 nets, routed with 81 tracks and 2 vias.

It is built around the M2.5.

Main components

1

README

raspi/gpio-tracer/hardware/README.md

Description

This simple PCB can be used to wire together the development boards for easier deployment. Alternatively, one can simply wire together everything using jumper wires. We produced our PCBs at JLCPCB, look below for our order configuration. The schematic files can be opened and exported to gerber files using KiCad. You can also look at the schematic for a reference as to how to wire everything together.

Hardware

Receiver

We use a commonly available of-the-shelf cc1101 development board for our setup. If you want to use our circuit board for deployment, you need to get a board with the same pin-out configuration. If you don't want to use our board and use jumper wires instead, you can get one of the other commonly available development boards. Just make sure that at least one GPIO (GDx) is exposed.

Logic Analyzer

Use one of the commonly available ez-usb fx2lp based logic analyzer if you want to use our PCB. Otherwise, if you jump wire everything you can also use a fx2lp development board.

Reference Clock

We need one node that emits a reference message every other second. For our setup, we use a STM32F401CC, but other microcontrollers can easily be adapted to work as reference node as well.

Miscellaneous

PCB Order Configuration

  • Base Material: FR-4
  • Layers: 2
  • Dimension: 65 mm* 56 mm
  • PCB Thickness: 1.6
  • PCB Color: Green
  • Silkscreen: White
  • Surface Finish: HASL(with lead)
  • Deburring/Edge rounding: No
  • Outer Copper Weight: 1
  • Gold Fingers: No
  • Castellated Holes: no
  • Material Type:FR4-Standard Tg 130-140C
  • Appearance Quality:IPC Class 2 Standard

Parts

8
QtyValueFootprintReferences
4M2.5MountingHole:MountingHole_2.7mm_M2.5MK1, MK2, MK3, MK4
2Conn_02x05_Odd_EvenConnector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_VerticalJ1, J2
1Conn_01x08Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_HorizontalJ3
1Conn_02x20_Odd_EvenConnector_PinSocket_2.54mm:PinSocket_2x20_P2.54mm_VerticalP1

Questions

How big is the Cc1101-expansion board PCB?

It measures 65 × 56 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Cc1101-expansion board use?

8 parts, built around the M2.5. 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 Cc1101-expansion board KiCad files?

From the ds-kiel/grace repository on GitHub, at the commit this page was made from: the board is raspi/gpio-tracer/hardware/cc1101-expansion-board.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Cc1101-expansion board design in my own project?

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

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