2 layers130.2 × 80.6 mm Controller Board mk2, the printed circuit board in 3D

Controller Board mk2

Pump water, drain water, and monitor moisture over MQTT. Includes physical circuit board, housing schematics, and firmware. Intended to be used with B.U.T.L.E.R as part of AI agent home automation system.

Open in PCBKit

Size: 130.2 × 80.6 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 48
Nets: 64
Pads: 155
Tracks, vias: 283, 11
Pours: 1
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 22 Oct 2025
Updated: 14 Oct 2026

Overview

Controller Board mk2 is an open-source printed circuit board by Lambchops118, from the Lambchops118/Pump-Power-Controller repository on GitHub. It is a 2-layer board of 130.2 × 80.6 mm with 48 parts on 64 nets, routed with 283 tracks and 11 vias.

It is built around the AP63205WU, 1N4148W and BC817, with the SC0918 among its other parts. Its parts include 12 resistors, 8 diodes, 5 connectors, 4 transistors and 4 switches. It belongs with the home automation and IoT boards and the NXP (LPC, Kinetis, i.MX RT) boards of this library.

Main components

README

README.md

Pump Power Controller

A four-channel pump controller designed for the Monkey Butler home-automation system. The repository contains the KiCad board design, manufacturing files, and fail-safe MicroPython firmware for a Raspberry Pi Pico W.

The firmware accepts bounded pump commands over MQTT, queues requests, reports state and health telemetry, and enforces local shutdown deadlines independently of the network or the main Butler service.

Repository layout

text

Firmware/      Pico W firmware and device configuration
Hardware/      KiCad schematic, PCB, and project files
Manufacture/   Manufacturing and board-production files

Parts

Qty	Value	Footprint	References
8	1N4148W	Diode_SMD:D_SOD-123	D1, D2, D3, D4, D13, D14, D15, D16
5	Barrel_Jack_MountingPin	Connector_BarrelJack:BarrelJack_CUI_PJ-102AH_Horizontal	J1, J2, J3, J4, J5
4	100k	Resistor_SMD:R_0603_1608Metric	R5, R6, R7, R8
4	2.2k	Resistor_SMD:R_0603_1608Metric	R1, R2, R3, R4
4	33k	Resistor_SMD:R_0603_1608Metric	R9, R10, R11, R12
4	BC817	Package_TO_SOT_SMD:SOT-23	Q1, Q2, Q3, Q4
4	RUILONSMD1812P050TF/30	Fuse:Fuse_1812_4532Metric	F1, F2, F3, F4
4	SANYOU_SRD_Form_C	Relay_THT:Relay_SPDT_SANYOU_SRD_Series_Form_C	K1, K2, K3, K4
2	22uF	Resistor_SMD:R_0603_1608Metric	C1, C2
1	0.1uF	Resistor_SMD:R_0603_1608Metric	C3
1	4.7uH	Capacitor_SMD:C_1206_3216Metric	L1
1	AP63205WU	Package_TO_SOT_SMD:TSOT-23-6	U1
1	Littelfuse MINISMDC260F/16-2	Fuse:Fuse_1812_4532Metric	Polyfuse1
1	SC0918	Raspberry Pi Pico W:MODULE_SC0918	A1

The 44 most common of 48 parts.

Questions

How big is the Controller Board mk2 PCB?

It measures 130.2 × 80.6 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Controller Board mk2 use?

48 parts, built around the AP63205WU, 1N4148W, BC817 and SC0918. 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.

Where can I download the Controller Board mk2 KiCad files?

From the Lambchops118/Pump-Power-Controller repository on GitHub, at the commit this page was made from: the board is Controller_Board_mk2.kicad_pcb and its schematic Controller_Board_mk2.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Controller Board mk2 design in my own project?

Its repository states no licence, so its author keeps all rights: ask Lambchops118 before reusing the design.

Category and platform

Home automation and IoT NXP (LPC, Kinetis, i.MX RT)

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/lambchops118-pump-power-controller" title="Controller Board mk2 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/lambchops118-pump-power-controller.jpg" alt="Controller Board mk2" width="1200" height="900">

A picture that opens the board, for a README

[![Controller Board mk2](https://pcbkit.io/embed/boards/lambchops118-pump-power-controller.jpg?size=s)](https://pcbkit.io/boards/lambchops118-pump-power-controller)

Source

Repository: Lambchops118/Pump-Power-Controller
Board file: Controller_Board_mk2.kicad_pcb
Commit: 8bcb739
Licence: Not stated

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