A custom PCB designed for managing a smart hydroponic system. It will definitly need some modification as my use case is so specifc.
Pcbv2 is an open-source printed circuit board by aidanp5, from the aidanp5/Hydroponic-Sensor-PCB repository on GitHub. It is a 2-layer board of 100 × 100 mm with 41 parts on 54 nets, routed with 345 tracks and 11 vias.
It is built around the DHT22 and IRF540N. Its parts include 5 transistors, 2 diodes and 1 resistor. It belongs with the Raspberry Pi (Linux) boards of this library.
A custom PCB designed for managing a smart hydroponic system. It will definitly need some modification as my use case is so specifc. It integrates components needed to automate water and nutrient delivery using peristaltic pumps and sensor feedback. I chose to use cheap sensors rather than good ones so that might need changing too.
5x N-Channel MOSFETs
For switching 0-36v peristaltic pumps, I used NRF20L01's but it would probably be better for Rpi to get some logic level mosfets.
Sensor Support
Has a port for pH sensor,EC, i2C USB port for a TSL2591 light sensor.
Microcontroller-Friendly
Headers make it easy to connect additional i2c or 5v devices.
Compact Form Factor
Layout for enclosure mounting and wire management. pH, EC, Battery could go inside a case
| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | Conn_01x02_Socket | Connector_JST:JST_XH_S2B-XH-A-1_1x02_P2.50mm_Horizontal | AUX_1, Float1, MOTOR_1, MOTOR_2, MOTOR_3, MOTOR_4, MOTOR_POWER1, PISUGAR_BATTERY1 |
| 5 | IRF540N | Package_TO_SOT_THT:TO-220-3_Vertical | Q1, Q2, Q3, Q4, Q5 |
| 4 | MountingHole_3.2mm_M3 | MountingHole:MountingHole_3.2mm_M3 | M3_3.2mm_1, M3_3.2mm_2, M3_3.2mm_3, M3_3.2mm_4 |
| 2 | Conn_01x02_Pin | Connector_JST:JST_XH_S2B-XH-A-1_1x02_P2.50mm_Horizontal | BUCK_OUTPUT1, PISUGAR_CHARGE1 |
| 2 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | POWER_JUMPER1, POWER_JUMPER2 |
| 2 | Conn_02x04_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x04_P2.54mm_Vertical | I2C_HEADER1, POW_HEADER1 |
| 2 | LED | LED_THT:LED_D3.0mm | LED1, POWER_LED1 |
| 2 | LOGO | LOGO | G***, GDead_Plant |
| 1 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | LED_RES1 |
| 1 | 4.7k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | Barrel_Jack_Switch_MountingPin | Connector_BarrelJack:BarrelJack_Horizontal | MAIN_POWER1 |
| 1 | Conn_01x03_Pin | Connector_JST:JST_XH_S3B-XH-A-1_1x03_P2.50mm_Horizontal | EC_Sensor1 |
| 1 | Conn_01x03_Socket | Connector_JST:JST_XH_S3B-XH-A-1_1x03_P2.50mm_Horizontal | WATER_TEMP1 |
| 1 | DHT22 | footprints:DHT22 | DHT22 |
| 1 | RASPBERRYPI-ZERO | footprints:RASPBERRYPI-ZERO_RPI-ZERO | A2 |
| 1 | USB_A | Connector_USB:USB_A_Kycon_KUSBX-AS1N-B_Horizontal | I2C_USB1 |
| 1 | ZC261500 | footprints:MODULE_ZC261500 | ADS1115 |
| 1 | ~ | Connector_JST:JST_XH_S4B-XH-A-1_1x04_P2.50mm_Horizontal | DISPLAY_OLED1 |
| 1 | ~ | Connector_JST:JST_XH_S3B-XH-A-1_1x03_P2.50mm_Horizontal | pH Sensor1 |
| 1 | ~ | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | BME680 |
| 1 | ~ | footprints:XL6009 | XL6009_VOLTAGE1 |
| 1 | ~ | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | SCD40_C02 |
It measures 100 × 100 mm and has 2 copper layers, 1.6 mm thick.
41 parts, built around the DHT22 and IRF540N. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the aidanp5/Hydroponic-Sensor-PCB repository on GitHub, at the commit this page was made from: the board is pcbv2.kicad_pcb and its schematic pcbv2.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask aidanp5 before reusing the design.
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