New Squircle Case update

Update graphics and 3D files

Author: davidkreidler

README.md

@@ -1,33 +1,33 @@
-# OpenCO2 Sensor using ESP32 and SCD4x
+# OpenCO2 Sensor with ESP32, Sensirion SCD40, E-Ink display, Wi-Fi, LED and a Battery
 
 [![Build OpenCO2_Sensor](https://github.com/davidkreidler/OpenCO2_Sensor/actions/workflows/arduino_build.yml/badge.svg)](https://github.com/davidkreidler/OpenCO2_Sensor/actions/workflows/arduino_build.yml)
 
 ![alt text](https://github.com/davidkreidler/OpenCO2_Sensor/raw/main/pictures/Header.png)
 
-OpenCO2 Sensor is an Arduino IDE compatible Repository for an E-Ink Indoor air quality Sensor using the ESP32, SCD4X and an RGB LED.
+OpenCO2 Sensor is an open-source indoor air quality sensor made in Germany. Measurements are displayed via an 1.54" E-Ink display, RGB LED in traffic light colors, or Wi-Fi, e.g., to Home Assistant. The Arduino code for the ESP32-S2 and Sensirion SCD40 is available here on GitHub.
 
-## Buy it [here on Tindie](https://www.tindie.com/products/davidkreidler/open-co2-sensor/)
+## Buy it [here on Open-Sensor.com](https://open-sensor.com/products/openco2-monitor-co2-sensor-luftqualitatssensor-co2-messgerat-made-in-germany-mit-e-ink-display-innenraum-luftqualitat-uberwachung?variant=62823149797725)
 
-Especially in winter, when windows are closed, a reminder to ventilate regularly is useful for health, comfort and well-being. Poor indoor air quality can lead to decreased productivity and learning disabilities. Therefore, I developed an Open-source ESP32 project that uses an E-Ink display and a LED to show the indoor CO2 content. Take the small Sensor anywhere you go to monitor the Air Quality, with Battery life of up to 11 weeks.
+Especially in winter, when windows stay closed, reminders to ventilate regularly help health and comfort. Poor indoor air quality can lead to lower productivity and learning difficulties. This open-source project helps you keep an eye on this at all times using the E-Ink display and LED. Take the small sensor with you wherever you go to monitor air quality – the battery life is up to 11 weeks.
 
 # CO2 Sensor
 
-With the SCD40, Sensirion offers a completely new miniaturized CO2 sensor based on the photoacoustic sensor principle.
-The integrated, industry-leading humidity and temperature sensor offers high accuracy with low power consumption.
-* Automatic self-calibration ensures the highest long-term stability
-* CO2 output range: 400 ppm – 40'000 ppm
+Based on the SCD40 from Sensirion, a completely new, miniaturized CO2 sensor with photoacoustic measurement principle.
+The integrated, industry-leading humidity and temperature sensor delivers high accuracy with low energy consumption.
+* Automatic self-calibration ensures maximum long-term stability
+* CO2 measuring range: 400 ppm – 40,000 ppm
 * Accuracy:
-	* CO2 ±(50ppm + 5% of reading)
-	* Temperature ±0.8°C
-	* Humidity ±6%
+    * CO2: ±(50 ppm + 5% of measured value)
+    * Temperature: ±0.8 °C
+    * Humidity: ±6%
 
 # Clear E-Ink display
 
-1.54" in size with a very high resolution (200x200 Pixel). Enables low power consumption and wide viewing angle. Per partial refresh, readings are updated every five seconds (every 30 seconds in battery mode).
+1.54" in size with high resolution (200 x 200 pixels). Enables low power consumption and a wide viewing angle. Display refreshes every 5 seconds during normal operation; in battery mode it refreshes ~every 30 seconds.
 
 # RGB LED
 
-For displaying the air quality as a traffic light (green, yellow, red, magenta). Brightness and color are adjustable via software.
+For displaying air quality as a traffic light (green, yellow, red, magenta). Brightness and color are adjustable via the Menu.
 
 # Home Assistant
 
@@ -60,23 +60,26 @@ rest:
 
 # 3D-printed housing
 
-Size: 4.7 x 4.1 x 2.4 cm
-* [3D Model viewer](https://a360.co/3syuvEk)
-* [3D File FRONT](https://a360.co/3CSICGq)
-* [3D File BACK](https://a360.co/437Ak88)
+Size: 4.9 x 3.8 x 2 cm
+* [3D Model viewer](https://a360.co/44f2th9)
+* [3D File FRONT](https://github.com/davidkreidler/OpenCO2_Sensor/blob/main/case/FRONT.obj)
+* [3D File BACK](https://github.com/davidkreidler/OpenCO2_Sensor/blob/main/case/BACK.obj)
+
+![alt text](https://github.com/davidkreidler/OpenCO2_Sensor/raw/main/pictures/animation.gif)
 
 ![alt text](https://github.com/davidkreidler/OpenCO2_Sensor/raw/main/pictures/drawing.png)
 
 # Menu
 
-Press the Menu button on the backside of the OpenCO2 Sensor. Select an option via long press (1+ sec) or move to next menu point via a short press. Choose between:
-* `LED` control color, brightness and when the LED should be enabled
-* `Display` can be inverted. Also change the Temperature unit, language and font
-* `Calibrate` put the sensor outside for 3+ minutes (only run this, if calibration is needed)
+Press the Menu button on the back. Long press (≥1 s) selects, short press cycles to the next item.
+Choose between:
+* `LED` control color, brightness and when the LED should be enabled.
+* `Display` can be inverted. Max battery charge percentage threshold. Also change the Temperature unit, language and font.
+* `Calibrate` put the sensor outside for 3+ minutes (only run this, if calibration is needed).
 * `History` display up to 24h of CO2, temperature and humidity as a graph. Values can also be exported via QR codes containing 1h of CO2 measurements each.
-* `Wi-Fi` enable or disable wireless connections
-* `Info` shows MAC Address, serial numbers, uptime, version and battery details
-* `Rainbow` fun little easter egg
+* `Wi-Fi` enable or disable wireless connections. Setup via connecting to the Network "OpenCO2 Sensor".
+* `Info` shows MAC Address, serial numbers, uptime, version and battery details.
+* `Fun` little easter eggs
 
 # Wi-Fi
 
@@ -115,26 +118,22 @@ Use [internet-pi](https://github.com/geerlingguy/internet-pi) to store the CO2 /
 
 # OTA Update
 
-Download `FIRMWARE.BIN` from the latest [release](https://github.com/davidkreidler/OpenCO2_Sensor/releases).
-Enable Wi-Fi via the Menu button, in an area where no previously known network is active. Connect power. Then connect to `OpenCO2 Sensor` and navigate to http://192.168.4.1 . Under `Update` select the `FIRMWARE.BIN` file and click `Update`. The Sensor will restart.
+1. Download `FIRMWARE.BIN` from the latest [release](https://github.com/davidkreidler/OpenCO2_Sensor/releases).
+2. Enable Wi-Fi via the Menu button, in an area where no previously known network is active.
+3. Make sure that power is connected.
+4. Connect you PC/mobile to the WiFi network `OpenCO2 Sensor` and navigate to http://192.168.4.1
+5. Under `Update` select the `FIRMWARE.BIN` file and click `Update`.
+6. The Sensor will restart.
 ![alt text](https://github.com/davidkreidler/OpenCO2_Sensor/raw/main/pictures/OTA.jpg)
 
-# Update via USB (from an old release)
-
-1. Download all files from the latest [release](https://github.com/davidkreidler/OpenCO2_Sensor/releases)
-2. Make sure, that the power switch is in the `ON` position (down)
-3. Plug a data USB-C cable into your PC and the Sensor
-4. Hold the Button on the backside of the CO2 Sensor near the USB-C port and shortly push simultaneously the reset ↪️ Button
-5. In Device Manager under `Ports (COM & LPT)` find the COM number and modify it in `update.bat`
-6. Run `update.bat`
-7. Afterwards push the reset ↪️ Button
 
 # Installation inside the Arduino IDE
 
-1. Copy the esp32-waveshare-epd Folder to your `Arduino/libraries/`
+1. Copy the esp32-waveshare-epd folder to your `Arduino/libraries/` directory
 2. [Install the ESP32 support for Arduino IDE](https://espressif-docs.readthedocs-hosted.com/projects/arduino-esp32/en/latest/installing.html)
 3. Choose `ESP32S2 Dev Module` under `Tools -> Board -> esp32`
-4. Connect the Sensor as described in step "Update to the latest release" and choose the new Port under `Tools -> Boards -> Port`
+4. Connect the Sensor via USB and flip the power switch to on while holding the button on the back
+5. Choose the new COM Port in the Arduino IDE under `Tools -> Port -> COMXX`
 
 # Dependencies
 
@@ -143,8 +142,6 @@ Enable Wi-Fi via the Menu button, in an area where no previously known network i
 * [Sensirion I2C SCD4x Arduino Library](https://github.com/Sensirion/arduino-i2c-scd4x)
 * [WiFiManager](https://github.com/tzapu/WiFiManager)
 
-![alt text](https://github.com/davidkreidler/OpenCO2_Sensor/raw/main/pictures/animation.gif)
-
 ![alt text](https://github.com/davidkreidler/OpenCO2_Sensor/raw/main/pictures/schematic.png)
 
 ![alt text](https://github.com/davidkreidler/OpenCO2_Sensor/raw/main/pictures/pcb.png)