IrrigationPiHat

Cameron-Ray·IrrigationPiHat·Combined Schematic & PCB/Main Circuit.kicad_pcb

IrrigationPiHat PCB layout, top view — open source board by Cameron-Ray

About the IrrigationPiHat PCB

IrrigationPiHat is an open source PCB design by Cameron-Ray, published on GitHub under the MIT license. It is a 6-layer board measuring 65.2 × 30.1 mm, with 85 components from 32 distinct parts.

Other key parts include the LTC3895IFE#TRPBF, LMV324, 74HC86 and LMV321. By type, the board carries 36 resistors, 9 ICs, 7 transistors, 7 connectors, 7 capacitors and 6 diodes.

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

From the project

Irrigation System μPiHAT for hobby or scientific use. This repo provides a full design process to create your own μPiHAT PCB from scratch. It allows you to control solenoid valves (although the system can be modified slightly to control various sub systems) from input taken from soil moisture sensors (these can also be substituted with other sensor types).

The irrigation PiHAT can be used for the irrigation of small gardens/vegetable patches via soil moisture level sensing and water dispensing. It may also be used in lab environments where scientists need to hold the moisture level of the soil at a constant level.

An optional configuration, which shows the modular ability of the HAT, is to replace the moisture sensors with a float switch or humidity sensor to either fill up pools; ponds; or water tanks or to operate ventilation systems if an enclosed space reaches a maximum humidity level.

Main components on the IrrigationPiHat

LTC3895IFE#TRPBF LMV324 74HC86 LMV321

IrrigationPiHat bill of materials (BOM)

85 components, 32 distinct parts.

Qty	Part	Footprint	Refs
1	LTC3895IFE#TRPBF	SOP50P640X120-39N	IC1
5	LMV324	SOIC-14_3.9x8.7mm_P1.27mm	U1, U2, U3, U4, U6
2	74HC86	SOIC-14_3.9x8.7mm_P1.27mm	U5, U7
1	LMV321	TSOT-23-5	U10
4	PN2222A	SOT-323_SC-70	Q1, Q2, Q3, Q4
1	Si4482DY	TDSON-8-1	Q5
2	BSC082N10LSG	TDSON-8-1	Q6, Q7
7	Conn_01x02_Male	PinHeader_1x02_P1.00mm_Vertical	J1, J2, J3, J5, J6, J7, J8
10	R_POT	Potentiometer_Bourns_3314G_Vertical	RV1, RV2, RV3, RV4, RV5, RV6, RV7, RV8 +2
2	SW_SPDT	JS102011JCQN	SW1, SW2
2	Red LED	LED_0201_0603Metric	D1, D4
2	Orange LED	LED_0201_0603Metric	D2, D5
2	Green LED	LED_0201_0603Metric	D3, D6
1	33µ, Rser=15m	L_1206_3216Metric	L1
1	0.01µ	C_0201_0603Metric	C1
1	1n	C_0201_0603Metric	C2
1	Cpar=100p,Rser=10k	C_0201_0603Metric	C3
1	4.7µ	C_0201_0603Metric	C4
2	0.1µ	C_0201_0603Metric	C5, C6
1	150µ x3, Rser=0.1	C_0201_0603Metric	C7

Show 12 more

Qty	Part	Footprint	Refs
2	10K	R_0201_0603Metric	R1, R13
16	1K	R_0201_0603Metric	R2, R4, R6, R7, R11, R12, R14, R15 +8
2	3636	R_0201_0603Metric	R3, R16
2	2.5K	R_0201_0603Metric	R5, R18
6	160	R_0201_0603Metric	R8, R9, R10, R21, R22, R23
1	75k	R_0201_0603Metric	R24
1	1Meg	R_0201_0603Metric	R25
1	18.7k	R_0201_0603Metric	R26
1	30.1k	R_0201_0603Metric	R27
2	511k	R_0201_0603Metric	R28, R33
1	36.5k	R_0201_0603Metric	R32
1	6m	R_0201_0603Metric	R34

IrrigationPiHat design files

The KiCad project lives in the Cameron-Ray/IrrigationPiHat repository on GitHub; these links point at the commit this page was built from.

LayoutCombined Schematic & PCB/Main Circuit.kicad_pcb

IrrigationPiHat: common questions

How big is the IrrigationPiHat PCB?

The IrrigationPiHat measures 65.2 × 30.1 mm, has 6 copper layers and is 1.6 mm thick.

How many components are on the IrrigationPiHat?

85 components, from 32 distinct parts. The full bill of materials is listed on this page.

Where can I download the IrrigationPiHat design files?

From the Cameron-Ray/IrrigationPiHat repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the IrrigationPiHat design in my own project?

Yes, under the terms of its MIT license, which Cameron-Ray chose for the repository.

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