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Chickencoop3.2

vinthewrench·chickencoop-3·hw/3.2/chickencoop3.2.kicad_pcb

Chickencoop3.2 PCB layout, top view — open source AVR/Arduino board by vinthewrench

About the Chickencoop3.2 PCB

Chickencoop3.2 is an open source AVR/Arduino PCB design by vinthewrench, published on GitHub under the MIT license. It is a 2-layer board measuring 130 × 100 mm, with 47 components from 30 distinct parts.

Its main chip is the ATmega1284P-P, from the AVR/Arduino family. Other key parts include the PCF8523T, VNH7100BASTR, D24V22F5 and ULN2003A. By type, the board carries 14 capacitors, 11 resistors, 8 connectors, 6 ICs, 2 relays and 2 switches.

It belongs with the sensors, power & battery and usb & debug tools designs in this gallery.

From the project

Chicken Coop Controller

Build your own automated, off-grid chicken coop door

A minimal, ultra-reliable, battery-powered AVR controller that opens the door at sunrise, closes and locks it at sunset — completely offline, no sensors, no Wi-Fi, no cloud, no GPS.

Designed for a mobile pasture-raised coop that moves with cattle and sheep. Runs for months on a small 12 V battery (solar is only a top-up). Survives Arkansas mud, ice, dust, coyotes, and power failures.

Main components on the Chickencoop3.2

ATmega1284P-PPCF8523TVNH7100BASTRD24V22F5ULN2003A

Chickencoop3.2 bill of materials (BOM)

47 components, 30 distinct parts.

QtyPartRefs
1
ATmega1284P-P
U1
1
PCF8523T
U2
2
VNH7100BASTR
U3, U4
1
D24V22F5
U5
1
ULN2003A
U6
1
AB26T-32.768KHZ
Y1
1
Power Pole
J1
1
AVR-ISP-6
J2
1
Serial port
J3
1
K1
J4
1
LOCK
J6
1
DOOR
J7
1
K2
J8
1
Mini‑Fit Jr
J9
1
1066
BT1
2
DSP1-L2-DC12V
K1, K2
1
AS11CH
SW_SPST
SW1
1
RESET
SW3
1
GND
TP3
1
P6SMB18A
TVS1
Show 10 more
QtyPartRefs
10
.1uf
C1, C3, C4, C7, C8, C10, C11, C12 +2
1
1000uf
C2
3
47uf
C5, C6, C9
2
10K
R1, R4
2
4.7K
R2, R3
1
240Ω
R5
1
220Ω
R6
3
470Ω
R7, R11, R13
1
4607X-101-104LF
100K
RN2
1
4612X-102-102LF
1K
RN4

Chickencoop3.2 design files

The KiCad project lives in the vinthewrench/chickencoop-3 repository on GitHub; these links point at the commit this page was built from.

Chickencoop3.2: common questions

What microcontroller does the Chickencoop3.2 use?

The Chickencoop3.2 is built around the ATmega1284P-P, from the AVR/Arduino family.

How big is the Chickencoop3.2 PCB?

The Chickencoop3.2 measures 130 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Chickencoop3.2?

47 components, from 30 distinct parts. The full bill of materials is listed on this page.

Where can I download the Chickencoop3.2 design files?

From the vinthewrench/chickencoop-3 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Chickencoop3.2 design in my own project?

Yes, under the terms of its MIT license, which vinthewrench chose for the repository.

Can I test firmware for the Chickencoop3.2 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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