Behind story

I have been using APM since 2006. the first was Jennifer (for java). and Scouter (similar to jennifer x-view)

And the year 2020, I meet elastic apm (half setup). I finished the setup from Python django monitoring, to Vue RUM(with sourcemap).

In the year 2023, I tried Sentry for the first time. It seems new and is specialized for error tracking. I have set up for NestJS(backend), React(web frontend) and ReactNative. It was not that bad with error tracking.

Tested ESP8266 with RC522 NFC/RFID Reader

RC522 is NFC/RFID reader, and it can be integrated into ESPHOME

• esphome configuration

  yaml

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   Open Source, ESP8266, ESPHome

Beelink Mini S

I wasn’t satisfied by Pico PC so,

I bought another mini PC. the Beelink Mini S

Here are some specs.

• CPU : Intel N95
• Memory : 8GB
• SSD : 256GB
• Display Output : HDMI x 2
• USB : USB-A x 4
• Ethernet : 1 GbE x 1
• Wifi : Wifi 5

Better than Pico PC

• Silent : most important Pico PC doesn’t include PWM controlled FAN. (what I mostly disappointed about Pico PC)
• Slightly faster. N95 is slightly faster than J series

Weaknesses?

ESP8266 + IR Receiver + IR Transmitter

When I was using raspberry pi, I bought a IR transceiver module for Arduino. and used it for several years. IR transceiver

And this year, I am interested in ESP8266, so I bought another IR receiver, IR transmitter.

Installed.

Install esp8266 and voltage converter on breadboard.

Install IR receiver and IR transmitter in front of tv

My Raspberry Pi 1

• Bought : ₩58,000 2013/04/24

  • with : PiFace, BOARD, I/O EXPANSION, RASPBERRY-PI (₩48,570)

• At First : install raspbian. tested relay, and tested led on PiFace

• As a IR Remote controller : telegram-bot-try2, 2019 May IoT project

• As a Thermal sensor : finally just read DHT11 temperature/humidity and send it to the server.

  bash

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   Open Source, Raspberry Pi

Story

I wanted to implement automatic LED light, when I approach kitchen.

Prepare

• ESP8266 compatible board. (I use ESP01 board this time)
• WS2812B LED Strip (5v addressable LED)
• HC-SR501 PIR Sensor (body detection sensor)

Wiring

• WS2812B

  • vcc : to USB 5v positive pin
  • gnd : to USB ground pin
  • data : to GPIO1 of ESP01

• HC-SR501

  • vcc : to USB 5v positive or 3.3v
  • gnd : to USB ground pin
  • data : to GPIO0 of ESP01

Result