HardLabs

SIP-Pi hat

IMHarris·SIP-Pi-hat

SIP-Pi hat layout, top view — open source Raspberry Pi board by IMHarris

About the SIP-Pi hat

SIP-Pi hat is an open source Raspberry Pi PCB design by IMHarris, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 85 × 56 mm, with 33 components from 21 distinct parts.

Its main chip is the Raspberry Pi Header, from the Raspberry Pi family. Other key parts include the 74HC595 and 113991054. By type, the board carries 9 connectors, 9 resistors, 6 capacitors, 3 ICs, 2 transistors and 2 diodes.

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

From the project

Raspberry Pi HAT for SIP irrigation controller with ESP32C3 flow sensor

Raspberry Pi HAT for the SIP (Smart Irrigation Program) irrigation controller.

- Designed to interface with SIP irrigation controller on Raspberry Pi - Outputs for relay control of up to 16 stations with 74HC595 output header for more - XAIO ESP32C3 module for flow sensor monitoring with inputs for hall flow sensor. Designed to work with the flow plugin - Communicates flow sensor data to Pi via UART - 5v I2c headers. Great for LCD plugin.

Main components on the SIP-Pi hat

74HC595113991054

SIP-Pi hat bill of materials (BOM)

33 components, 21 distinct parts.

QtyPartRefs
2
74HC595
U1, U2
1
113991054
U3
2
BSS138
Q1, Q2
1
Raspberry Pi Header
J1
1
Relay terminal 1
J2
1
Relay terminal 2
J3
1
I2C 5V 1
J4
1
I2C 5V 2
J5
1
To Flow Sensor
J6
1
Conn_01x06_Pin
J7
1
Relay terminal 1
J22
1
Relay terminal 2
J23
1
10164359-00011LF
5v_in1
1
SW_Slide_DPDT
SW1
2
LED
D1, D2
3
0.1µF
C1, C2, C7
3
10µF
C5, C6, C27
5
10k
R1, R9, R10, R11, R12
1
1.5k
R3
2
5.1k
R4, R5
Show 1 more
QtyPartRefs
1
470
R6

SIP-Pi hat design files

The KiCad project lives in the IMHarris/SIP-Pi-hat repository on GitHub; these links point at the commit this page was built from.

SIP-Pi hat: common questions

What microcontroller does the SIP-Pi hat use?

The SIP-Pi hat is built around the Raspberry Pi Header, from the Raspberry Pi family.

How big is the SIP-Pi hat?

The SIP-Pi hat measures 85 × 56 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the SIP-Pi hat?

33 components, from 21 distinct parts. The full bill of materials is listed on this page.

Where can I download the SIP-Pi hat design files?

From the IMHarris/SIP-Pi-hat repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the SIP-Pi hat design in my own project?

Yes, under the terms of its CC-BY-SA-4.0 license, which IMHarris chose for the repository.

Can I test firmware for the SIP-Pi hat 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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