HardLabs

BSED

RCMgames·BSED·extras/hardware/ByteSizedEncoderDecoder.kicad_pcb

BSED PCB layout, top view — open source AVR/Arduino board by RCMgames
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About the BSED PCB

BSED is an open source AVR/Arduino PCB design by RCMgames, published on GitHub under the MIT license. It is a 2-layer board measuring 21.6 × 25.4 mm, with 11 components from 3 distinct parts.

Its main chip is the ATMEGA328PB-AU, from the AVR/Arduino family. By type, the board carries 10 connectors and 1 IC.

From the project

Byte Sized Encoder Decoder - Reads 8 quadrature encoders and communicates over I2C (and is qwiic compatible).

Here are the KiCAD and Gerber files for creating the circuit boards this firmware is designed to run on.

You could theoretically run it on a bare ATmega328 chip or another board, but the code is specialized for this board and uses hard-coded pin numbers.

1x assembled PCB buy assembled PCBs from PCBWay with all the surface mount soldering done for you https://www.pcbway.com/project/shareproject/ByteSizedEncoderDecoderv11a5a4bd50.html or do your own surface mount soldering: circuit board: If you buy PCBs from PCBWay through this link PCBWay generously gives me a 10% commission without costing…

Main components on the BSED

ATMEGA328PB-AU

BSED bill of materials (BOM)

11 components, 3 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATMEGA328PB-AU
ATMEGA328PB, 32-TQFP
U1
2
SM04B-SRSS-TB
J1, J2
8
do not place or purchase for PCB assembly
1x4 female header pins 0.1"
J3, J4, J5, J6, J7, J8, J9, J10

BSED design files

The KiCad project lives in the RCMgames/BSED repository on GitHub; these links point at the commit this page was built from.

BSED: common questions

What microcontroller does the BSED use?

The BSED is built around the ATMEGA328PB-AU, from the AVR/Arduino family.

How big is the BSED PCB?

The BSED measures 21.6 × 25.4 mm, has 2 copper layers and is 1 mm thick.

How many components are on the BSED?

11 components, from 3 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the BSED design files?

From the RCMgames/BSED repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the BSED design in my own project?

Yes, under the terms of its MIT license, which RCMgames chose for the repository.

Can I test firmware for the BSED 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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