Measuring illuminance with light intensity sensor module (BH1750FVI) and ESP32
Article on the measurement of illuminance with the ESP32-WROOM-32 module using ROHM’s GY-302, a modularized illuminance sensor (BH1750FVI).
Measurement of eCO2 and VOC (Volatile Organic Compounds) with CCS811
Article on the measurement of eCO2 (equivalent CO2) and TVOC (Total Volatile Organic Compounds) with ESP32 and CCS811 and display on OLED display.
Display the results of CO2 concentration measurements on an OLED display
The measurement results of the CO2 sensor (MH-Z19C) were displayed on the display using ESP32. connection to the ESP32 module is I2C.
ESP32-WROOM-32, CO2 sensor (MH-Z19C) and LCD
Article on ESP32-WROOM-32 using CO2 sensor (MH-Z19C) to measure CO2 concentration in the air and display the result on LCD
Temperature, humidity, air pressure and gas values displayed on M5Stick-C and BME680
The BME680 can detect temperature, humidity, barometric pressure, and gases, and is connected to the M5Stick-C for display on the monitor.
Apache HTTP Server vulnerability countermeasure upgraded to v2.4.52
Apache HTTP Server was found to have a vulnerability with a maximum severity of High, so it was upgraded from 2.4.29 to 2.4.52.
Installed ArduinoIDE2.0 to prevent Log4j vulnerability.
The Arduino IDE uses Log4j internally, and is affected by the Log4Shell vulnerability. I took the opportunity to install v2.0 which does not use Java.
Tried I2C LCD (liquid crystal display) with ESP32-WROOM-32
This is an article about running a sample program with an ESP32 (ESP32-WROOM-32) connected to an I2C 1602 16×2 character LCD module display.
Try to read and write files from a sketch using SPIFFS on ESP32
There was a time when I wanted to save a file on ESP32-WROOM-32 and load it from a sketch program. I found out that SPIFFS can be used.
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