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Esp32-recirc pump controller

pdw-mb·esp32-recirc-pump-controller·pump-controller/pump-controller.kicad_pcb

Esp32-recirc pump controller PCB layout, top view — open source ESP32 board by pdw-mb
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About the Esp32-recirc pump controller PCB

Esp32-recirc pump controller is an open source ESP32 PCB design by pdw-mb, published on GitHub. It is a 2-layer board measuring 43.6 × 43.6 mm, with 32 components from 18 distinct parts.

Its main chip is the ESP32-C3-MINI-1, from the ESP32 family. Other key parts include the AP63203WU. By type, the board carries 13 resistors, 6 capacitors, 5 diodes, 3 connectors, 2 ICs and 1 transistor.

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

From the project

ESP32 pump controller for Grundfos Comfort AutoAdapt recirculating hot water pump

This project contains a KiCad project for a replacement controller board that I built for a Grundfos Comfort AutoAdapt recirculating hot water pump using an ESP32-C3-MINI-1 board. This allows the pump to be controlled remotely, and integrated in to Home Assistant using [ESPHome][esphome]. There's some more information on this in the Home Assistant community forum.

Esp32-recirc pump controller, from the project README
From the project README

Main components on the Esp32-recirc pump controller

ESP32-C3-MINI-1AP63203WU

Esp32-recirc pump controller bill of materials (BOM)

32 components, 18 distinct parts.

QtyPartRefs
1
ESP32-C3-MINI-1
U1
1
AP63203WU
U3
1
AO3400A
Q1
1
Conn_02x03_Odd_Even
J1
1
Conn_01x05_Male
J2
1
Conn_02x02_Odd_Even
J3
1
SW_Push
SW1
5
LED
D1, D2, D3, D4, D5
1
4.7uH
L1
1
10u
C1
2
22u
C2, C4
2
10u
C3, C6
1
100n
C7
6
10K
R1, R2, R3, R7, R9, R16
4
4R7
R4, R5, R6, R8
1
68R
R10
1
DNF
R11
1
680R
R12

Esp32-recirc pump controller design files

The KiCad project lives in the pdw-mb/esp32-recirc-pump-controller repository on GitHub; these links point at the commit this page was built from.

Esp32-recirc pump controller: common questions

What microcontroller does the Esp32-recirc pump controller use?

The Esp32-recirc pump controller is built around the ESP32-C3-MINI-1, from the ESP32 family.

How big is the Esp32-recirc pump controller PCB?

The Esp32-recirc pump controller measures 43.6 × 43.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Esp32-recirc pump controller?

32 components, from 18 distinct parts. The full bill of materials is listed on this page.

Where can I download the Esp32-recirc pump controller design files?

From the pdw-mb/esp32-recirc-pump-controller repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Esp32-recirc pump controller design in my own project?

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

Can I test firmware for the Esp32-recirc pump 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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