Mainboard
About the Mainboard PCB
Mainboard is an open source AVR/Arduino PCB design by ARTS-Laboratory, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 41.9 × 55.9 mm, with 12 components from 11 distinct parts.
Its main chip is the Arduino_Nano_v3.x, from the AVR/Arduino family. Other key parts include the DS3231M, CR1025, Rails, MicroSD.V2 and Battery. By type, the board carries 7 ICs, 1 module, 1 capacitor and 1 resistor.
It belongs with the sensors and power & battery designs in this gallery.
From the project
An in situ water quality sensor for monitoring water quality
Main components on the Mainboard
Mainboard bill of materials (BOM)
12 components, 11 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | DS3231M | SOIC-16W_7.5x10.3mm_P1.27mm | U1 |
| 1 | CR1025 | CR1025 | U2 |
| 1 | Rails | Rails | U3 |
| 1 | MicroSD.V2 | MicroSD.V2 | U4 |
| 1 | Battery | battery | U5 |
| 1 | DS3231M+ Ph_embedded https://www.digikey.com/en/products/detail/analog-devices-inc-maxim-integrated/DS3231M-TRL/2402421 | pH_embedded | U6 |
| 1 | Probe_slot | Probe_rails | U7 |
| 1 | Arduino_Nano_v3.x | Arduino_Nano | A1 |
| 2 | R | R_1206_3216Metric | 4.7k1, 10K1 |
| 1 | C | C_1206_3216Metric | C1 |
| 1 | 4.7K | R_1206_3216Metric | R4 |
Mainboard design files
The KiCad project lives in the ARTS-Laboratory/In-Situ-Water-Quality-Sensor repository on GitHub; these links point at the commit this page was built from.
Mainboard: common questions
What microcontroller does the Mainboard use?
The Mainboard is built around the Arduino_Nano_v3.x, from the AVR/Arduino family.
How big is the Mainboard PCB?
The Mainboard measures 41.9 × 55.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Mainboard?
12 components, from 11 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 Mainboard design files?
From the ARTS-Laboratory/In-Situ-Water-Quality-Sensor repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Mainboard design in my own project?
Yes, under the terms of its CC-BY-SA-4.0 license, which ARTS-Laboratory chose for the repository.
Can I test firmware for the Mainboard 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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