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Home Buttons Mini

Home Buttons

Features:

  • 4 push buttons, multiple press support
  • 1.5" e-paper display
  • Material Design Icons
  • Wi-Fi connectivity
  • Less than 1 second from button press to triggered action (depending on your network)
  • Temperature & humidity sensor
  • 2x AA batteries
  • 1-2 year battery life
  • Compact size: 64 x 64 x 20 mm

Getting Started

Set up you device with the help of Getting Started guide.

Where To Get

You can buy Home Buttons on Tindie or Lectronz.

I sell on Tindie

I sell on Lectronz

Technical Specifications

Physical

Dimensions

  • Width: 63.6 mm
  • Height: 63.6 mm
  • Depth: 20.0 mm
  • Weight: 90 g (incl. batteries)
  • Casing material: PETG (3D printed)

User Interface

  • E-paper display
  • 4 tactile buttons with LED illumination

Display

  • Type: Single color E-paper (non-illuminated)
  • Size: 1.5"
  • Resolution: 200 x 200
  • Model number: Good Display GDEY0154D67

Connectivity

  • 2.4Ghz WiFi
    • MQTT protocol (Supports MQTT Discovery)

SoC

  • ESP32-S2
    • Xtensa® Single­Core 32­bit LX7
    • Integrated WiFi modem: IEEE 802.11 b/g/n (2.4 GHz Wi­Fi)
  • Supports OTA (Over-The-Air firmware update)
  • Advanced security features

Environmental Sensor

  • Sensirion SHTC3 high accuracy Temperature and Relative Humidity sensor
  • Temperature accuracy: ±0.2°C (0°C to 60°C)
  • Humidity accuracy: ±2% RH (20% RH to 80% RH)

Batteries

Home Buttons mini uses two AA alkaline batteries. They prove to be a good compromise between capacity, size, price and availability. A pair should last you about two years for the following use case:

  • Varta Industrial Pro AA
  • 30 minutes sensor interval (for temperature / humidity reporting)
  • 20 button presses per day
  • WPA-2 Wi-Fi security

Battery life might be shorter if you use Home Buttons more often or if you use WPA-3 WiFi security. It can be extended by increasing the sensor interval (you can do that from Home Assistant or the setup page) or setting up static IP.

Always use high quality alkaline batteries from a reputable brand. During WiFi communication, the device needs large bursts of power, which low-quality batteries might not be able to provide, decreasing your battery life drastically.