HardLabs

Input board

bigbrainlabs·BoatOpenIO·hardware/v2/input-board/input-board.kicad_pcb

Input board layout, top view — open source board by bigbrainlabs
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About the Input board

Input board is an open source PCB design by bigbrainlabs, published on GitHub under the Custom license license. It is a 2-layer board measuring 110 × 46 mm, with 65 components from 5 distinct parts.

By type, the board carries 32 resistors, 16 diodes and 1 connector.

It belongs with the sensors, iot & wireless and test & measurement designs in this gallery.

From the project

Universal 16-channel analog marine gateway for boats with legacy VDO sensors. Connects analog instruments to MQTT and Signal K without sensor replacement. ESP32-based, open source, modular mini-board system.

Universal Marine IO System – Open Source, modular, fully configurable

BoatOpenIO is an open hardware platform for sensor integration on boats. Each of the 16 sensor terminals can be freely assigned to any of the up to 16 input channels via software. Pluggable mini-boards handle signal conditioning — no soldering, no rewiring.

Part of the Logbook Without Posing series – Volume 3.

Input board, from the project README
From the project README

Input board bill of materials (BOM)

65 components, 5 distinct parts.

QtyPartRefs
1
Screw_Terminal_01x16
J27
16
Conn_01x03_Pin
CH01, CH02, CH03, CH04, CH05, CH06, CH07, CH08 +8
16
D_Zener
D1, D2, D3, D4, D5, D6, D7, D8 +8
16
1k
R1, R2, R3, R4, R5, R6, R7, R8 +8
16
1M
R17, R18, R19, R20, R21, R22, R23, R24 +8

Input board design files

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

Input board: common questions

How big is the Input board?

The Input board measures 110 × 46 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Input board?

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

Where can I download the Input board design files?

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

Can I use the Input board design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

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