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A small handy pocket TEMP Meter made from ESP32C3 driven MCU paired with an SSD1306 128x32-pixel screen, AHT10 is being used to take TEMP.

So here’s something portable and useful: the Pocket TEMP Meter project.

As the name suggests, this is a compact, useful temperature and humidity meter made of an ESP32C3-based development board, an SSD1306 OLED display, an AHT10 sensor, a LiPo cell, and 3D printed parts.

Here, TEMP values are taken using the AHT10 temperature and humidity sensor, which displays the data on the OLED screen. We were able to reduce the device’s size to a tiny 25x25x48mm formfactor, which makes it perfect for carrying around in our pockets and letting us collect temperature readings whenever and wherever we want.

This is made possible by the small battery and relatively compact components utilized in the build.

The whole article is about the build process of this device, so let’s get started with the build.

Materials required
These were the components used in this build:

- SSD1306 Display (Got from PCBWAY’s Gift Shop)
- ESP32C3 DEV Board Beetle
- 3D-printed parts
- AHT10 Temp Sensor
- Prototyping Board
- LiPo cell, 3.7V-100mAh cell
- M2 Screws
- Wires

SSD1306 OLED Screen

The 0.91-inch SSD1306 OLED Display is a compact and versatile screen commonly used in electronic projects and devices. Featuring OLED (Organic Light-Emitting Diode) technology, this display provides crisp and vibrant visuals with high contrast and wide viewing angles. The SSD1306 controller chip is employed to drive the display, enabling compatibility with various microcontrollers and single-board computers.

With a resolution typically around 128x32 pixels or 128x64 pixels, the 0.91-inch OLED display offers a small form factor suitable for applications where space is limited.

We’re using a 128x32-pixel display in this project.

Its monochromatic display capability makes it energy-efficient, well-suited for battery-powered devices. The I2C communication protocol is commonly used for interfacing with the display, ensuring ease of integration into different projects.

These displays find applications in a wide range of DIY electronics, wearable gadgets, and prototyping projects, where real-time information or simple graphics are required in a compact form. The 0.91-inch SSD1306 OLED Display’s versatility, small size, and energy efficiency make it a popular choice among hobbyists and developers for enhancing user interfaces in various electronic creations.”

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