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Irrigation Controller Unit

danielmcmillan·irrigation-system·hardware/irrigation-controller/irrigation-controller.kicad_pcb

Irrigation Controller Unit PCB layout, top view — open source ESP32 board by danielmcmillan

About the Irrigation Controller Unit PCB

Irrigation Controller Unit is an open source ESP32 PCB design by danielmcmillan, published on GitHub under the MIT license. It is a 2-layer board measuring 109 × 48.3 mm, with 34 components from 25 distinct parts.

Its main chip is the ESP32, from the ESP32 family. Other key parts include the AQY280EH, TPS54331DR and MAX3485. By type, the board carries 9 resistors, 8 connectors, 8 capacitors, 4 ICs, 3 diodes and 1 fuse.

From the project

Hardware and software for irrigation control and monitoring

"irrigation-controller" contains the KiCad project for the central control board.

"remote-unit" contains the KiCad project for the remote solenoid control board.

Some project-specific symbols and footprints are saved in the lib dir.

This external symbol and footprint is used with name "TPS54331DR": https://octopart.com/tps54331dr-texas+instruments-12190905

Main components on the Irrigation Controller Unit

AQY280EHTPS54331DRMAX3485

Irrigation Controller Unit bill of materials (BOM)

34 components, 25 distinct parts.

QtyPartRefs
2
AQY280EH
U1, U3
1
TPS54331DR
U4
1
MAX3485
U6
1
RS485
J1
1
I/O
J3
1
RF Module
J5
1
PWR 24V
J6
1
RELAY_1
J7
2
ESP32
J8, J9
1
RELAY_2
J12
1
200mA
F1
2
LED
D1, D2
1
550mV 1A
D3
1
4.7uH
L1
4
10uF
C7, C17, C19, C21
1
22pF
C9
1
8.2nF
C11
1
2.2nF
C13
1
100nF
C15
2
330
R1, R4
Show 5 more
QtyPartRefs
2
560
R2, R3
2
3k
R5, R17
1
12k
R8
1
120
R12
1
10k
R16

Irrigation Controller Unit design files

The KiCad project lives in the danielmcmillan/irrigation-system repository on GitHub; these links point at the commit this page was built from.

Irrigation Controller Unit: common questions

What microcontroller does the Irrigation Controller Unit use?

The Irrigation Controller Unit is built around the ESP32, from the ESP32 family.

How big is the Irrigation Controller Unit PCB?

The Irrigation Controller Unit measures 109 × 48.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Irrigation Controller Unit?

34 components, from 25 distinct parts. The full bill of materials is listed on this page.

Where can I download the Irrigation Controller Unit design files?

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

Can I use the Irrigation Controller Unit design in my own project?

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

Can I test firmware for the Irrigation Controller Unit without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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