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BillyNate / _esphome-esp32-c3-supermini-dsmr-p1-energy-monitor.md
Last active August 13, 2025 20:04
Super Simple ESPHome ESP32 C3 SuperMini DSMR P1 Energy Monitor

Super Simple ESPHome ESP32 C3 SuperMini DSMR P1 Energy Monitor

This is a super simplistic setup of an DSMR (P1) energy monitor utilizing the ESP32-C3 (SuperMini) you can get for €1-€2.
The ESP32 is flashed with ESPHome and can easily be integrated into Home Assistant.
It is tested on a DSMR 4. The ESP32-C3 is externally powered by usb since the "slimme meter" couldn't power it.
The update rate is controlled by the meter. It should be possible to use the data request pin, but this would require more parts (optocoupler etc).

Parts

Only three parts are used for building

@BillyNate
BillyNate / Pi running Home Assistant in RAM.md
Last active November 30, 2025 12:39
Home Assistant setup on Raspberry Pi with TinyCore Linux (RAM only OS)
@BillyNate
BillyNate / picore setup.md
Last active May 6, 2025 19:06
TinyCore Linux (RAM only OS) setup starting point

Basic setup of TinyCore/PiCore on a Raspberry Pi

These are the steps taken to setup piCore 14
Newer version might work as well (or maybe even better), but have not been tested.
This covers the basics to get started.

Set up piCore

  1. Download the piCore image
  2. Unpack the .zip file and write the .img file to the SD-Card (using USB Image Tool for example)
  3. Move the SD-Card to the Pi, plug the Pi into the network and plug in the power source
@BillyNate
BillyNate / _esphome-pir-mmwave-test.yaml
Last active January 4, 2025 19:04
ESPHome low energy presence detector
# This is a sample config for ESPHome for making a low-energy presense detector on an ESP SoC with a PIR motion sensor (HC-SR501, AM312, etc) and a mmWave sensor (HLK-LD2410)
# The ESP is put into deep-sleep when the mmWave sensor detects no presence. Once the PIR sensor detects motion the ESP gets a signal to wake up.
# The LD2410 is powered on/off over a mosfet by the ESP via a GPIO pin.
# When the ESP is awake an LED will be turned on. If you're using an ESP dev board, there's probably already an LED available, just make sure the correct pin is set in this config.
esphome:
name: esphome-pir-mmwave-sensor
on_boot:
then:
- output.turn_on: ld2410_gpio_output
@BillyNate
BillyNate / piCore Zero W setup.md
Last active October 18, 2025 05:12

Setup with TinyCore Linux (RAM only OS) on Raspberry Pi Zero W on Windows

These are the steps taken to setup piCore 14 on a Raspberry Pi with only Wi-Fi (no ethernet)
Newer version might work as well (or maybe even better), but have not been tested.

Set up piCore

  1. Download the piCore image
  2. Unpack the .zip file and write the .img file to the SD-Card (using Raspberry Pi Imager for example)
  3. Move the SD-Card to the Pi, plug in a keyboard and a screen, plug in the power source
  4. Execute backup shell command after the first boot to save generated unique SSH keys which will be used during next boots.
@BillyNate
BillyNate / dirk-api.md
Last active January 18, 2023 20:39
Dirk (van den Broek) app API

This is an overview of discoveries surrounding the Dirk app for Android & iOS.
Calls are made to app-api.dirk.nl over https. It looks like this is version 2 of the API since first segment of the path is /v2.
Funny enough a lot of the assets are loaded from app.dekamarkt.nl.

Two custom headers are send with each request to app-api.dirk.nl: x-api-id and x-api-key. The user-agent header is usually okhttp/4.9.1.

Stores

A list of stores can be requested from /stores, the parameter formulaId filters out stores: 1 is Dekamarkt and 2 is Dirk.
The response will be a json array of objects. Each object represents a store containing:

  • storeId: a unique string of digits
@BillyNate
BillyNate / Pi running Home Assistant in RAM.md
Last active August 9, 2025 21:04
Home Assistant setup on Raspberry Pi with TinyCore Linux (RAM only OS)

Home Assistant setup on Raspberry Pi with TinyCore Linux (RAM only OS)

‼️ ‼️ ‼️
A rewrite of this guide, using different methods, is now available at gist.github.com/BillyNate/856f62dfc480506e0116220bf24b01b4.
This guide is only kept for archival purposes.
‼️ ‼️ ‼️

These are the steps taken to have Home Assistant 2024.2 on piCore 14
Newer version might work as well (or maybe even better), but have not been tested.

@BillyNate
BillyNate / Pi running MPD in RAM.md
Last active June 15, 2025 22:07
Multiroom music setup on Raspberry Pi with TinyCore Linux (just RAM)

Multiroom music setup on Raspberry Pi with TinyCore Linux (RAM only OS)

These are the steps taken to have MPD on piCore 14
Newer version might work as well (or maybe even better), but have not been tested.

Set up piCore

  1. Download the piCore image
  2. Unpack the .zip file and write the .img file to the SD-Card (using USB Image Tool for example)
  3. Move the SD-Card to the Pi, plug the Pi into the network and plug in the power source
  4. SSH into the Pi (using Putty for example)
@BillyNate
BillyNate / .travis.yml
Last active June 2, 2021 18:36
Simple Flutter iOS app testing using Travis and Appatize
os: osx
name: iOS
osx_image: xcode12.5
install:
- git clone https://github.com/flutter/flutter.git -b stable
- export PATH=$PWD/flutter/bin:$PWD/flutter/bin/cache/dart-sdk/bin/:$PATH
- flutter doctor
- gem install fastlane
script:
- flutter build ios --build-number $TRAVIS_BUILD_NUMBER --debug --no-codesign
@BillyNate
BillyNate / remove extension from tiny core.md
Created April 14, 2019 14:02
Remove extension from Tiny Core
  1. Build the audit db: tce-audit builddb
  2. Issue delete command: tce-audit delete extensionname