HardLabs

Stathat

skot·stathat

Stathat PCB layout, top view — open source Raspberry Pi board by skot

About the Stathat PCB

Stathat is an open source Raspberry Pi PCB design by skot, published on GitHub under the CERN-OHL-S-2.0 license. It is a 4-layer board measuring 65 × 56.5 mm, with 36 components from 10 distinct parts.

Its main chip is the Raspberry_Pi_2_3, from the Raspberry Pi family. Other key parts include the 74HC14 and LTV-844S. By type, the board carries 16 resistors, 9 connectors, 5 capacitors, 4 diodes and 2 ICs.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

RPi HAT for thermostat 24VAC dry contacts

A RPi Hat interface to a 24VAC thermostat.

Stathat, from the project README
From the project README

Main components on the Stathat

74HC14LTV-844S

Stathat bill of materials (BOM)

36 components, 10 distinct parts.

QtyPartRefs
1
74HC14
U2
1
LTV-844S
U4
8
Conn_01x01
J1, J2, J3, J5, J6, J7, J8, J9
1
Raspberry_Pi_2_3
J4
4
GREEN_LED
D1, D2, D3, D4
4
2.2uF
C1, C2, C3, C4
1
0.1uF
C5
8
5k
R1, R3, R5, R7, R9, R11, R13, R15
4
10k
R2, R6, R10, R14
4
2.2k
R4, R8, R12, R16

Stathat design files

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

Stathat: common questions

What microcontroller does the Stathat use?

The Stathat is built around the Raspberry_Pi_2_3, from the Raspberry Pi family.

How big is the Stathat PCB?

The Stathat measures 65 × 56.5 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Stathat?

36 components, from 10 distinct parts. The full bill of materials is listed on this page.

Where can I download the Stathat design files?

From the skot/stathat repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Stathat design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which skot chose for the repository.

Can I test firmware for the Stathat without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Raspberry Pi firmware against it before you order a PCB.

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