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Soldering-Sponge-Automatic-Water-Dispenser

EECSB·Soldering-Sponge-Automatic-Water-Dispenser·Soldering Sponge Automatic Water Dispenser PCB/Soldering Sponge Automatic Water Dispenser.kicad_pcb

Soldering-Sponge-Automatic-Water-Dispenser PCB layout, top view — open source AVR/Arduino board by EECSB

About the Soldering-Sponge-Automatic-Water-Dispenser PCB

Soldering-Sponge-Automatic-Water-Dispenser is an open source AVR/Arduino PCB design by EECSB, published on GitHub under the Unlicense license. It is a 2-layer board measuring 50 × 50 mm, with 23 components from 17 distinct parts.

Its main chip is the ATtiny45-20P, from the AVR/Arduino family. Other key parts include the LM7805_TO220. By type, the board carries 6 connectors, 6 diodes, 4 capacitors, 4 resistors, 2 ICs and 1 transistor.

From the project

ATtiny45-based device that keeps a soldering sponge moist automatically (3D-printed case + KiCad PCB + firmware).

For more information about the project, see my blog posts: Soldering Sponge Automatic Water Dispenser

Soldering-Sponge-Automatic-Water-Dispenser, from the project README
From the project README

Main components on the Soldering-Sponge-Automatic-Water-Dispenser

LM7805_TO220ATtiny45-20P

Soldering-Sponge-Automatic-Water-Dispenser bill of materials (BOM)

23 components, 17 distinct parts.

QtyPartRefs
1
LM7805_TO220
U1
1
ATtiny45-20P
U2
1
IRLZ44N
Q1
2
12V AC
J1, J2
1
Motor +
J3
1
Motor -
J4
1
Manual Watering Push Button
J5
1
Sensor
J6
5
1N4001
D1, D2, D3, D4, D5
1
LED Pump Indicator
D6
2
470uF
C1, C2
1
10uF
C3
1
0.1uF
C4
1
10K
R1
1
100
R2
1
1K
R3
1
100K
R4

Soldering-Sponge-Automatic-Water-Dispenser design files

The KiCad project lives in the EECSB/Soldering-Sponge-Automatic-Water-Dispenser repository on GitHub; these links point at the commit this page was built from.

Soldering-Sponge-Automatic-Water-Dispenser: common questions

What microcontroller does the Soldering-Sponge-Automatic-Water-Dispenser use?

The Soldering-Sponge-Automatic-Water-Dispenser is built around the ATtiny45-20P, from the AVR/Arduino family.

How big is the Soldering-Sponge-Automatic-Water-Dispenser PCB?

The Soldering-Sponge-Automatic-Water-Dispenser measures 50 × 50 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Soldering-Sponge-Automatic-Water-Dispenser?

23 components, from 17 distinct parts. The full bill of materials is listed on this page.

Where can I download the Soldering-Sponge-Automatic-Water-Dispenser design files?

From the EECSB/Soldering-Sponge-Automatic-Water-Dispenser repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Soldering-Sponge-Automatic-Water-Dispenser design in my own project?

Yes, under the terms of its Unlicense license, which EECSB chose for the repository.

Can I test firmware for the Soldering-Sponge-Automatic-Water-Dispenser 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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