Moisture sensor
rct4·Autonomous-Soil-Monitoring-Rover·PCBs/moisture_sensor/moisture_sensor/moisture_sensor.kicad_pcb
About the Moisture sensor PCB
Moisture sensor is an open source PCB design by rct4, published on GitHub. It is a 2-layer board measuring 40.8 × 38.5 mm, with 13 components from 8 distinct parts.
Other key parts include the LM358. By type, the board carries 7 resistors, 4 connectors and 2 ICs.
It belongs with the sensors designs in this gallery.
From the project
The autonomous soil monitoring rover is a project that aims to assist commercial farmers and personal gardeners by introducing an automated solution to monitoring soil data.

Main components on the Moisture sensor
Moisture sensor bill of materials (BOM)
13 components, 8 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | LM358 | N08E | U1, U2 |
| 1 | Conn_01x02_Socket | PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | Moisture_Power | TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J2 |
| 1 | Screw_Terminal_01x02 | TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J3 |
| 1 | Conn_01x01_Pin | PinHeader_1x01_P2.54mm_Vertical | J4 |
| 2 | 100K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2 |
| 1 | 10M | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3 |
| 4 | 1K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R5, R6, R7 |
Moisture sensor design files
The KiCad project lives in the rct4/Autonomous-Soil-Monitoring-Rover repository on GitHub; these links point at the commit this page was built from.
Moisture sensor: common questions
How big is the Moisture sensor PCB?
The Moisture sensor measures 40.8 × 38.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Moisture sensor?
13 components, from 8 distinct parts. The full bill of materials is listed on this page.
Where can I download the Moisture sensor design files?
From the rct4/Autonomous-Soil-Monitoring-Rover repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Moisture sensor design in my own project?
The repository has no license, so all rights stay with rct4. Use it as a reference, and ask the author before reusing the design.
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