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Apollo Automation

Apollo Breakout Module

$5.99
$5.99
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The Apollo Breakout Module is part of the ESPHome Starter Kit family and gives your build room to grow. It breaks the ESP32-C6's pins out to a full set of standard connectors, so you can plug in off-the-shelf sensors or wire up your own parts. A shared I2C bus feeds five connectors (STEMMA QT / Qwiic, STEMMA, Grove, a Sensirion SEN6x port, and a 3.5mm probe jack), with a 1-Wire port for DS18B20 temperature probes and a 2x6 GPIO header for everything else. Attach it to your ESPHome C6 Board with one of the kit's FPC ribbon cables, then add your component in the ESPHome Device Builder, no code required. It works with any ESPHome component, runs locally, and connects to Home Assistant when you want it.
  • Plug in any STEMMA QT / Qwiic, STEMMA, or Grove sensor and read it in ESPHome, no soldering.
  • Add a DS18B20 temperature probe through the 1-Wire port for fridges, freezers, fish tanks, and more.
  • Connect a Sensirion SEN6x air quality sensor through its dedicated port.
  • Wire up your own buttons, relays, or displays on the 2x6 GPIO header, including the ESP32-C6's UART, with standard jumper wires.
  • Expand your ESPHome Starter Kit into a custom device, then add it to Home Assistant for local automations.
  • Apollo Breakout Module

We hope to build a community on our Discord and continue delivering products the community wants. Our team will be there to help answer any questions, suggestions, or problems you might have.

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Please see our Apollo Wiki for more information.

Product Details

How It Works

Attach the Apollo Breakout Module to your ESPHome C6 Board with one of the kit's FPC ribbon cables (either 14-pin port works, top or bottom). Because the module has no fixed sensor, you pick the component that matches whatever you connect in the ESPHome Device Builder. For I2C sensors, set SCL to pin 0 and SDA to pin 1 and turn on the pullups. For a DS18B20 probe on the 1-Wire port, add the One Wire component on GPIO6 with a Dallas temperature sensor. For the GPIO header, point the component at the pin you wired. New to it? The Apollo Wiki walks you through every step.

Connectors and Specs

  • Connection: FPC ribbon cable to the ESPHome C6 Board (either 14-pin FPC port)
  • Shared I2C bus (SCL on GPIO0, SDA on GPIO1) across five connectors: STEMMA QT / Qwiic (3.3V), STEMMA (5V, 4-pin), Grove, a SEN6x port for Sensirion SEN6x air quality sensors, and a 3.5mm jack for an optional SHT20 temperature and humidity probe
  • 1-Wire port (data on GPIO6) for DS18B20 temperature probes
  • 3-pin STEMMA (5V) general-purpose port: GPIO6, 5V, and GND
  • 2x6 GPIO header: power, UART (TX and RX), and spare GPIOs, for standard jumper wires
  • Power: 3.3V on the ESP32-C6's controlled rail by default (off during sleep to save battery). A solder jumper (J5) switches it to always-on 3.3V for advanced builds
  • Software: ESPHome Device Builder, with every sensor, switch, and light in the ESPHome component index supported

Open source and local

The Apollo Breakout Module is open hardware with no fixed function: wire up what you want, keep your data local, and avoid vendor lock-in. It runs on ESPHome and works with Home Assistant, with no cloud, no account, and no subscription. Designed and built in-house by Apollo Automation in Versailles, Kentucky.

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