8 open source boards using the MCP23008
Real designs built with the MCP23008, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
Raspberry PiPiPtr
jmlzone
101.6 × 141.7 mm379 parts4LNo license8
FPGAHL2 Filter Board
softerhardware
100 × 49.9 mm112 parts4LNo license372
AVR/ArduinoAvr ledprojection-0402
cnlohr
25.4 × 34.5 mm91 parts2LMIT4
TunerSection
profdc9
100 × 100 mm123 parts2LNo license59
AVR/ArduinoControlStandShield
RobertPHeller
68.6 × 53.3 mm40 parts2LGPL-3.03
LittleDelayLine
100 × 100 mm117 parts2LNo license59
LittleSwitchBus
100 × 100 mm101 parts2LNo license59
Filter
100 × 100 mm81 parts2LNo license59
The MCP23008 in open source designs
The gallery holds 8 open source boards using the MCP23008 from 5 GitHub repositories; a typical one measures about 100 × 100 mm and carries around 107 components.
75% are two-layer designs, the rest use four layers or more, and 25% carry an open source license.
The most starred is HL2 Filter Board by softerhardware.
Microcontrollers on boards using the MCP23008
What boards using the MCP23008 are built for
MCP23008: common questions
Where can I find a MCP23008 reference design?
Each of the 8 boards on this page is a real design using the MCP23008. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
Which microcontrollers do boards using the MCP23008 use?
Most are built on AVR/Arduino (2), FPGA (1) and Raspberry Pi (1).
How big is a typical board using the MCP23008?
The median is 100 × 100 mm, and 75% are two-layer designs.
What is the most popular open source board using the MCP23008?
By GitHub stars, HL2 Filter Board by softerhardware, with 372 stars.
Can I simulate one of these boards using the MCP23008 before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.