HardLabs

Chirp v2.4-pannel

Miceuz·PlantWateringAlarm

Chirp v2.4-pannel PCB layout, top view — open source AVR/Arduino board by Miceuz

About the Chirp v2.4-pannel PCB

Chirp v2.4-pannel is an open source AVR/Arduino PCB design by Miceuz, published on GitHub. It is a board measuring 141 × 90 mm, with 19 components from 15 distinct parts.

Its main chip is the ATTINY44A, from the AVR/Arduino family. By type, the board carries 6 resistors, 4 capacitors, 2 diodes, 1 IC, 1 transistor and 1 jumper.

It belongs with the sensors designs in this gallery.

From the project

A soil humidity level sensor based on ATTINY44. Uses capacitive sensing.

A soil moisture level sensor based on ATTINY44. Uses capacitive sensing.

More info at http://wemakethings.net/chirp

Main components on the Chirp v2.4-pannel

ATTINY44A

Chirp v2.4-pannel bill of materials (BOM)

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

QtyPartRefs
1
ATTINY44A
TINY24/44/84-SSU
Atmel
IC1
1
BSN20
NXP
Q1
1
BATTERY
B1
1
AVR_SPI_PRG_6NS
JP1
1
SPEAKER/PS12
SP1
1
SPST_TACTFSMJSMA
SW1
1
LED
KINGBRIGHT
LED1
1
DIODE
SYC
D1
1
BAT54
DIODE-SCHOTTKY_
FAIRCHILD SEMICONDUCTOR
D2
2
1UF
100nF
MULTICOMP
C2, C3
2
1UF
1uF
MULTICOMP
C4, C5
3
10K
R1, R5, R7
1
510K
MULTICOMP
R2
1
100R
R3
1
10K
1K
R6

Chirp v2.4-pannel design files

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

Chirp v2.4-pannel: common questions

What microcontroller does the Chirp v2.4-pannel use?

The Chirp v2.4-pannel is built around the ATTINY44A, from the AVR/Arduino family.

How big is the Chirp v2.4-pannel PCB?

The Chirp v2.4-pannel measures 141 × 90 mm and is 1.6 mm thick.

How many components are on the Chirp v2.4-pannel?

19 components, from 15 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 Chirp v2.4-pannel design files?

From the Miceuz/PlantWateringAlarm repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Chirp v2.4-pannel design in my own project?

The repository has no license, so all rights stay with Miceuz. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Chirp v2.4-pannel 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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