ESP8266 NodeMCU Konnected BeepBeep

A beeping device that is USB powering ESP8266 NodeMCU running the Konnected Alarm System Firmware and connects to Home Assistant.

Tim Bertram

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Description

This is a box with a beeper and a switch. While using a Konnected Alarm Panel with Home Assistant I was looking for a door beeper leveraging the existing system. Additionally I was looking for an easy way to switch it on and off as needed.

As I was already using Konnected it seemed logical build something around that.

Components

1 × ESP8266 microcontroller NodeMCU https://www.amazon.com/gp/product/B071YPS666
1 × Mini Solderless Breadboard https://www.amazon.com/gp/product/B01KKE602W/
1 × Plastic Project Box https://www.amazon.com/gp/product/B073Y7FW1Q/
1 × Piezo Buzzer https://www.amazon.com/dp/B019XSI8HG/
1 × Toggle Switch https://www.amazon.com/dp/B07L74MMG8/

Build Instructions

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1

Flash Konnected Firmware

Follow instructions on this page to flash the firmware
https://help.konnected.io/support/solutions/articles/32000023470-flashing-konnected-firmware-software
2

Install ESP8266 into breadboard

The mini breadboard doesn't have the room to fit the ESP8266 and the beeper so offset the board and have the unused pins not connected to anything.
3

Connect the Piezo Buzzer

The + pin on the buzzer connects to D7 and the G pin next to D5. This corresponds to "zone 5" in the konnected firmware.