HardLabs

Raindrop

ARTS-Laboratory·Rain-Gauge-Sensor-Package·Rain_Gauge/V0.3/kicad/raindrop.kicad_pcb

Raindrop PCB layout, top view — open source AVR/Arduino board by ARTS-Laboratory
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About the Raindrop PCB

Raindrop 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 30.5 × 67.3 mm, with 15 components from 10 distinct parts.

Its main chip is the Arduino_Nano_v3.x, from the AVR/Arduino family. Other key parts include the L7805 and DS3231M. By type, the board carries 4 connectors, 4 capacitors, 3 resistors, 2 ICs, 1 module and 1 battery holder.

It belongs with the sensors designs in this gallery.

From the project

Measuring the rain

1. Need to add the component library local. Add "Saifmicrosd" to this folder. 1. Update basic component list.

Main components on the Raindrop

L7805DS3231MArduino_Nano_v3.x

Raindrop bill of materials (BOM)

15 components, 10 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
L7805
U1
1
DS3231M
U2
1
Arduino_Nano_v3.x
A1
1
Saif_micro_sd
J1
1
Screw_Terminal_01x02
J2
1
Conn_01x02_Female
J3
1
switch
J4
1
Battery_Cell
BT1
4
C
C1, C2, C3, C4
3
R
R1, R2, R3

Raindrop design files

The KiCad project lives in the ARTS-Laboratory/Rain-Gauge-Sensor-Package repository on GitHub; these links point at the commit this page was built from.

Raindrop: common questions

What microcontroller does the Raindrop use?

The Raindrop is built around the Arduino_Nano_v3.x, from the AVR/Arduino family.

How big is the Raindrop PCB?

The Raindrop measures 30.5 × 67.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Raindrop?

15 components, from 10 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 Raindrop design files?

From the ARTS-Laboratory/Rain-Gauge-Sensor-Package repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Raindrop 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 Raindrop 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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