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Hydroponics reservoir controller

bookofthefuture·hydroponics-pcb·reservoir-board/hydroponics_reservoir_controller/hydroponics_reservoir_controller.kicad_pcb

Hydroponics reservoir controller PCB layout, top view — open source ESP32 board by bookofthefuture

About the Hydroponics reservoir controller PCB

Hydroponics reservoir controller is an open source ESP32 PCB design by bookofthefuture, published on GitHub. It is a 2-layer board measuring 100 × 100 mm, with 76 components from 30 distinct parts.

Its main chip is the ESP32, from the ESP32 family. Other key parts include the SP3485EN, AMS1117-3.3 and TPS54302. By type, the board carries 31 resistors, 10 diodes, 9 capacitors, 8 transistors, 4 ICs and 1 connector.

It belongs with the iot & wireless and sensors designs in this gallery.

From the project

KiCad PCB designs for the two-tier IKEA hydroponics monitoring/control system

KiCad PCB designs for the hydroponics monitoring/control system on a two-tier IKEA growing rack.

Grow-lamp switching currently stays on the original ESP8266 hydroponicsmonitor` node and is out of scope for these boards (may move to the reservoir board later).

Display connector (J2, 14-pin) pinout: VCC, GND, CS(D5), RESET(D4), DC(D2), MOSI(D23), SCK(D18), LED(D15), MISO(D34), TCLK(D18, shared), TCS(D14), TDIN(D23, shared), TDO(D34, shared), T_IRQ(D35). SD card connector (J3, 4-pin, separate from J2): CS(D19), MOSI(D23, shared), MISO(D34, shared), SCK(D18, shared). New GPIOs used: 14, 19, 34…

Main components on the Hydroponics reservoir controller

ESP32SP3485ENAMS1117-3.3TPS54302

Hydroponics reservoir controller bill of materials (BOM)

76 components, 30 distinct parts.

QtyPartRefs
1
ESP32
U1
1
SP3485EN
U2
1
AMS1117-3.3
U3
1
TPS54302
U4
8
AO3400A
Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8
1
Jumper
J1
1
1Wire_Peripherals
1Wire
6
Screw_Terminal_01x02
CH1, CH2, CH3, CH4, CH5, CH6
2
Screw_Terminal_01x03
CH7, CH8
1
Fuse
F1
1
Screw_Terminal_01x02
POW1
1
i2c_Peripherals
i2c Peripherals
1
D_Schottky
D1
1
LED
D2
8
SS14
D3, D4, D5, D6, D7, D8, D9, D10
1
4.7uH
L1
1
10uF
C1
1
100uF
C2
1
22uF
C3
1
100nf
C4
Show 10 more
QtyPartRefs
3
100nF
C5, C6, C7
2
22uF
C8, C9
1
100k
R1
1
75k
R2
11
10k
R3, R7, R9, R11, R13, R15, R17, R19 +3
4
1k
R4, R27, R29, R31
1
120
R5
9
100
R6, R8, R10, R12, R14, R16, R18, R20 +1
3
4.7k
R22, R23, R24
1
2k
R25

Hydroponics reservoir controller design files

The KiCad project lives in the bookofthefuture/hydroponics-pcb repository on GitHub; these links point at the commit this page was built from.

Hydroponics reservoir controller: common questions

What microcontroller does the Hydroponics reservoir controller use?

The Hydroponics reservoir controller is built around the ESP32, from the ESP32 family.

How big is the Hydroponics reservoir controller PCB?

The Hydroponics reservoir controller measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Hydroponics reservoir controller?

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

Where can I download the Hydroponics reservoir controller design files?

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

Can I use the Hydroponics reservoir controller design in my own project?

The repository has no license, so all rights stay with bookofthefuture. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Hydroponics reservoir controller 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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