Monthly Archives: December 2024

Computer, IOT / Domoticz

Display work

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Last Updated or created 2024-12-30

While working on a client project, I tested multiple displays.

  • ILI9341
  • 1.3inch SPI TFT LCD Display RGB (ST7789)
  • Waveshare 4.2 Epaper with ESP32 Controller

I thought it was fun to connect the Epaper to ESPHome.

This probably ends up being a Quote displayer
Universal e-Paper Driver Board with WiFi / Bluetooth SoC ESP32 onboard, supports various Waveshare SPI e-Paper raw panels

It was not without problems. For example, the ESPHome editor gave squiggly lines under type.
This has to be changed in the libraries.
(Already notified developers)

model: 4.20in-V2 does not work .. use model: 4.20in-v2

esphome:
  name: epaperqoute
  friendly_name: epaperqoute

esp32:
  board: esp32dev
  framework:
    type: arduino

# Enable logging
logger:

# Enable Home Assistant API
api:
  encryption:
    key: "tzRSzZky3Jk+hUYtiybzT90kxxxxxxxxxxxxxxxxxxxxx="

ota:
  - platform: esphome
    password: "4f127e114a7a44fxxxxxxxxxxxxxxxxxxxxx"

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Epaperqoute Fallback Hotspot"
    password: "yLSoxxxxxxxxxx"

captive_portal:


external_components:
  - source: github://pr#6209
    components: [ waveshare_epaper ]

text_sensor:
  - platform: homeassistant
    entity_id: input_text.epaper_display_text
    id: epaper_display_text
    on_value:
      then:
        - component.update: epaperdisplay
    
spi:
  clk_pin: GPIO13
  mosi_pin: GPIO14

# Upload own ttf to a directory in esphome/fonts using file editor in Home Assistant
font:
  - file: "fonts/newspaper.ttf"
    id: tahoma
    size: 64

http_request:
  verify_ssl: false

# image test
online_image:
  - url: "https://www.henriaanstoot.nl/epapertest.png"
    id: example_image
    format: PNG

#it.image(0, 0, id(example_image));

display:
  - platform: waveshare_epaper
    id: epaperdisplay
    cs_pin: GPIO15
    dc_pin: GPIO27
    busy_pin: GPIO25
    reset_pin: GPIO26
    model: 4.20in-v2
    reset_duration: 200ms
    update_interval: never
    lambda: |
           it.printf(0, 0, id(tahoma), "%s", id(epaper_display_text).state.c_str());
3dprinting, Computer, IOT / Domoticz

Divers …

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Last Updated or created 2024-12-09

Running into some Ubuntu machines with keyboard mouse problems after upgrading to 24.04

fix:

apt get install xserver-xorg-input-synaptics
apt get install xserver-xorg-input-all

3D printing some test models generated with AI from a photo to make some boardgame pieces.

Meanwhile, I am testing big motor controllers for a new client.

Last week I was at a friend’s place, time to make a launcher creator in bash

#!/bin/bash
#
if [ $# -lt 2 ]; then
	echo "createlauncher.sh name (path/bin) path/name"
    exit 1
fi


cat << EOF > /tmp/$1
[Desktop Entry]
Type=Application
Terminal=false
Name=$1
Icon=~/bin/icon/$1.png
Exec=$2 $3
EOF

cp /tmp/$1  ~/.local/share/applications/$1.desktop
update-desktop-database

Made a cable holder in my lab (Already modded)
Can be folded upwards.

Folded
Pulled down

Did a lot of work in my new lab/workshop.

Got some cool new tools in. Post later

Also working on a new arrangement for a bagpipe tune.

IOT / Domoticz

New tests for animatronics

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Last Updated or created 2024-12-03

Controlling windscreen wipers with Arduino for animatronics.

I was looking for a cheap solution to control movement, for example Halloween puppets.

I used a XY-160D dual 7A high amperage 12V controller to control a windscreen wiper.

Using a Arduino Uno and some simple code, I got movement out of the 12V motor.

Pins used:
Vcc – Arduino 5V
GND – Arduino GND
ENA – Arduino PWM pin
IN1 & IN2 (controls direction) – Two arduino output pins