HardLabs

CEWB

aJax-EXE·C.E.W.B.·Hardware/PCBModels/ArduinoShieldDesign/OldTestBoard/CEWBPCBDesign.kicad_pcb

CEWB PCB layout, top view — open source AVR/Arduino board by aJax-EXE

About the CEWB PCB

CEWB is an open source AVR/Arduino PCB design by aJax-EXE, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 90 × 59.5 mm, with 8 components from 5 distinct parts.

Its main chip is the A000066, from the AVR/Arduino family. By type, the board carries 2 jumpers and 1 module.

It belongs with the robotics & motion designs in this gallery.

From the project

The repository for all of the necessary code, schematics, parts list, and instructions to build the C.E.W.B.

C.E.W.B. (name pending; referred to as 'CEWB' throughout this README) is a low-cost, open-source electromechanical teaching platform designed for teaching and applying control systems concepts in a real-world environment. It was developed as a direct functional replacement for the Quanser Qube-Servo 2, a $5,000 proprietary device that is now outdated and requires an older version of MATLAB to operate.

CEWB, from the project README
From the project README

Main components on the CEWB

A000066

CEWB bill of materials (BOM)

8 components, 5 distinct parts.

QtyPartRefs
1
A000066
A1
1
~
DRV1
2
Jumper_2_Bridged
JP1, JP2
2
Conn_01x04_Pin
MainEncoder1, SecondaryEncoder1
2
Conn_01x02_Pin
Motor1, PowerSupply1

CEWB design files

The KiCad project lives in the aJax-EXE/C.E.W.B. repository on GitHub; these links point at the commit this page was built from.

CEWB: common questions

What microcontroller does the CEWB use?

The CEWB is built around the A000066, from the AVR/Arduino family.

How big is the CEWB PCB?

The CEWB measures 90 × 59.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the CEWB?

8 components, from 5 distinct parts. The full bill of materials is listed on this page.

Where can I download the CEWB design files?

From the aJax-EXE/C.E.W.B. repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the CEWB design in my own project?

Yes, under the terms of its GPL-3.0 license, which aJax-EXE chose for the repository.

Can I test firmware for the CEWB without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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