Smart Irrigation & Field Controller

Field controller for monitoring and controlling agricultural equipment through multiple wired sensor/actuator connections.

Agriculture4L · MCU

Smart Irrigation & Field Controller PCB design by CircuitNexa

Project overview

Field controller for monitoring and controlling agricultural equipment through multiple wired sensor/actuator connections.

Engineering approach

Field-deployed agricultural hardware typically runs on batteries for months at a time, so power budgeting and low-power sleep modes shape most of the design decisions. On this board, that translates into a component set built around 4L and MCU, with layout and stack-up decisions driven by outdoor durability, low-power operation for long field deployments, and reliable long-range connectivity.

Technical specification

4L · MCU

From prototype to compact design

The first version was assembled from off-the-shelf modules wired together on a printed plate. The custom PCB brings the controller, sensor, fan and power connections onto one board, which allows a much more compact build. Click any photo to view it full size.

Earlier smart irrigation and field controller prototype built from an Arduino Nano-class board, a solar charging module, a relay module, a wired probe sensor, an 18650 cell and a blower fan on a 3D-printed plate — The earlier version: an Arduino Nano–class board, a solar charging module, a relay module, a wired probe sensor, an 18650 cell and a blower fan, wired together on a 3D-printed plate.

Custom smart irrigation and field controller PCB with USB-C, on/off switch, 18650 battery holder, solar input, two fan connectors, LED output, BME280 sensor, and ISP and UART headers — The custom PCB: USB-C, an on/off switch, an 18650 holder, a solar input, two fan connectors, an LED output, an onboard BME280 sensor, and ISP and UART headers. The outlined area takes the solar charging module.

Compact smart irrigation and field controller assembly: custom PCB with solar charging module and 18650 cell fitted, mounted on a 3D-printed base with a blower fan — The compact build: the PCB with the charging module and 18650 cell fitted, mounted on a 3D-printed base with the blower fan.

Engineering focus

This portfolio project demonstrates CircuitNexa's electronics engineering and PCB design work in the agriculture space. The design shown here is part of a broader portfolio spanning schematic capture, PCB layout, embedded firmware, prototyping, and support through to manufacturing.

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