Main board
About the Main board
Main board is an open source PCB design by bigbrainlabs, published on GitHub under the Custom license license. It is a 2-layer board measuring 90 × 60 mm, with 6 components from 6 distinct parts.
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.
Main board bill of materials (BOM)
6 components, 6 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Conn_01x02 | JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | +5V |
| 1 | ZC261500 | MODULE_ZC261500 | ADS1115 |
| 1 | AMS1117CD-3.3 | PinHeader_1x03_P2.54mm_Vertical | AMS1117 |
| 1 | BOB-09056 | MODULE_BOB-09056 | CD74HC4067 - MUX |
| 1 | MPU6050 | MPU6050_Breakout | GY-521 |
| 1 | Conn_02x08_Odd_Even | PinHeader_2x08_P2.54mm_Vertical | J_ESP32 |
Main 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.
Main board: common questions
How big is the Main board?
The Main board measures 90 × 60 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Main board?
6 components, from 6 distinct parts. The full bill of materials is listed on this page.
Where can I download the Main 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 Main 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.
More boards in BoatOpenIO
Input board
110 × 46 mm65 parts2LCustom license11
Boardopenio
171.5 × 185.5 mm59 parts2LCustom license11
ESP32BoatOpenIO-v2
90 × 60 mm46 parts2LCustom license11
ESP8266MotorCombo THT
95 × 55 mm35 parts2LCustom license11
Vcc board
20 × 80 mm10 parts2LCustom license11
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