andersevenrud

RadiationD v1.1 CAJOE with ESPHome (Home Assistant)

A brief guide on how to set up a cheap and readily available radiation detector (geiger counter) in Home Assistant using ESPHome.

Materials

• RadiationD
• ESP32 Microcontroller (I used a WROOM)
• Dupont Connectors
• 10K Ohm Resistor (optional, but recommended for protection)

andersevenrud

D-Link DCS-5030L IP-Camera in Home Assistant

This is a brief guide on how to set up this Camera in Home Assistant, including controls.

Might work with other models as well.

Requirements

andersevenrud

KlipperScreen Splash Screen Video

A simple systemd service to show a splash video before KlipperScreen loads.

Demo: https://www.youtube.com/watch?v=En1gtl8IiC8

Note:

This interrupts the launch of KlipperScreen. However the other Klipper services still start up in the background, so it's not really noticable in terms of total startup time.

andersevenrud

I wanted to connect a simple piezo buzzer to my 3D-printer running Klipper to make some beeps when a print starts, stops, etc.

Parts required

• A passive buzzer (I bought these cheap ones from Ali)
  • Note that active buzzers have an internal oscillator and cannot emit tones of different frequencies.
• Some wires and a connector

Assembly

andersevenrud

Gigatek DSP840

Documentation of a point-of-sales display unit from GIGA-TMS INC.

This documents my personal findings, rom dumps, references to official resources available online, and working examples from investigations and experimenting. I got this device from a decommissioned grocery store cash register.

Demonstration video of the device running over Serial (RS232): https://www.youtube.com/shorts/m6WFimJwR7Y

Specifications

andersevenrud

Pi-Hole w/D-Link R15

A brief guide on how to set up Pi-Hole and make all clients on the network use it as DNS without any manual configuration on clients.

R15 is also known as EAGLE PRO AI AX1500 Smart Router

https://eu.dlink.com/no/nb/products/r15-eagle-pro-ai-ax1500-smart-router

Setting up Pi-Hole

andersevenrud

Arduino Temperature Monitor Hub for Klipper

I wanted to monitor temperatures in certain areas on my printer[^3] with Klipper and came up with the following solution.

BoM

Assumes you have access to soldering iron etc.

• Arduino or similar
• Jumper wires

andersevenrud

Strømpris i Home Assistant

Det er mulig å legge til strømpris som en sensor i Home Assistant takket være https://www.hvakosterstrommen.no/ .

Dette vil ikke reflektere ditt abonnement, men gjør det enkelt å få et estimat i forbruksdata / energi panelet.

Konfigurasjon

Tilgjenglige områder:

andersevenrud

NEXA Z-Wave Devices

Information about Nexa AB distributed Z-Wave devices.

Please note that this document is a compilation personal notes and opinions about my experience (<1yr) with these devices (and not a complete list). Your experience may vary... and I would love to hear about it in the comments.

Table of Contents

• ZPR-111 - Plug-in Switch w/power metering
• Bugs

andersevenrud

DIY Z-Wave Power Metering Pulse Sensor

I created this because my meter doesn't have an accessible HAN port, and I was not able to find any basic Z-Wave sensor to monitor pulses that did not require the use of some (packaged) proprietary solution or a subscription (and mobile apps). Also, kinda expensive.

This cost me $50 in total (2023), which was considerably cheaper and very beginner friendly.

Accuracy is ~99% (when compared to billing information from my provider over a period of 90 days).

Parts Used