Rack32 Universal Rack Controller ESP32 Control Board

(3 customer reviews)


SKU: RACK32-main Category:


The Rack32 is a control board that helps you build your own rack-mounted projects for home automation, industrial automation, music, networking, or anything else that can take advantage of standard 19″ rack hardware.

It is one component of the Universal Rack Controller project, which provides you with a framework for building your own rack-mount devices.

The Rack32 comes in two versions. The regular “RACK32” version includes an onboard PCB antenna, which is convenient if you don’t care about WiFi performance and will connect to it via Ethernet or USB. The “RACK32E” version has a U.FL socket for an external WiFi antenna, which will allow you to have excellent WiFi performance even if your project is mounted inside a metal rack-mount enclosure.

If you select the “RACK32E” version, you can pair it with the 2.4GHz / 5GHz Antenna with Lead for maximum performance even inside a metal enclosure.


  • ESP32 microcontroller with WiFi
  • 10/100Mbps Ethernet
  • 802.3af Power-over-Ethernet support with 12W output
  • DIY Power-over-Ethernet support for use with simple 12V PoE injectors
  • Pluggable terminal block for optional external DC power input
  • Automotive-grade voltage regulator for harsh electrical environments
  • 6-way IDC “I2C-Breakout” header for linking to other boards within the rack enclosure
  • 8-way IDC “SPI-LCD” header for connection to an external LCD
  • USB-C connector for loading firmware
  • Auto power source selection between USB-C, PoE, and external DC input
  • IO header with power, 2 x I2C ports, and the ESP32’s second hardware UART
  • Micro SD card slot for storage of config files, logs, and media
  • Onboard temperature sensor
  • Header for front-panel power LED (not included)
  • 2 versions available: Rack32 with onboard PCB antenna, and Rack32E with socket for external antenna


Additional information

Weight 200 g
Dimensions 160 × 60 × 30 mm

PCB, External

3 reviews for Rack32 Universal Rack Controller ESP32 Control Board

  1. gunnar

    i see there are I2C RJ45 Light Switch Breakout on stock but now is missing rack controller. kind a pointless buy one if second is missing… so – will be there rack controller in stock soon?
    greetings from estonia

    • Jonathan Oxer

      I assembled some Rack32s earlier this week, but I don’t have time to test and package them right now. Hopefully I will get to that on the weekend.

  2. Sergio

    Hi Jon,
    Also need 2 boards to replace my Ether 10 and Mega.
    I keep monitoring this page for maybe more than half a year now, if you can let your Patreons know a few days earlier before you restock that would be great đŸ™‚

  3. Jurgen Coetsiers (verified owner)

    Any time when new will be available? Added a home extension and want to use same setup as on other part of the home.

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