Discover 7 Affordable ESP32 Devices That Excel at One Task
The rise of ESP32 technology has led to a surge in affordable devices that excel at specific tasks, providing users with innovative solutions without the hefty price tag of commercial alternatives. These ESP32-based devices are designed for those willing to engage in a bit of tinkering, offering enhanced control and privacy through customizable firmware. Below are seven impressive devices that stand out for their unique functionality and cost-effectiveness.
ReSpeaker Lite: Transform Your Audio Experience
The ReSpeaker Lite, priced at approximately $32, is an ESP32-based audio kit developed by Seeed Studio. It features a dual-microphone array, enabling users to upgrade their existing speakers into smart devices. By flashing the Home Assistant Voice Preview Edition firmware, users can unlock wake word support and hands-free control. For those seeking improved performance, the ReSpeaker XVF3800 4-microphone array, available for around $60, enhances voice pickup and responsiveness, making it a powerful alternative to mainstream smart speakers. Though some technical know-how is required, the ReSpeaker Lite offers an affordable pathway to creating a DIY smart speaker.
M5Stack Atom Echo: Compact Voice Assistant
The M5Stack Atom Echo retails for about $14 and serves as a compact ESP32 device equipped with a built-in microphone and speaker. It functions as a satellite node for DIY voice assistant setups, capable of handling wake-word detection directly on the device. Users can also utilize the Home Assistant Voice pipeline for enhanced functionality. Additionally, the Atom Echo can relay Bluetooth Low Energy (BLE) device signals, acting as a capable middleman for smart home devices.
The versatility of this tiny cube makes it an excellent choice for those looking to integrate voice control into their existing home automation systems.
ESP32 Cheap Yellow Display: Multifunctional Screen
At a price point of around $20, the ESP32 Cheap Yellow Display (CYD) is an entry-level “everything screen” that offers multiple uses. Its compact design makes it suitable as a Now Playing screen, a Home Assistant dashboard, or even a microSD-card-based music player. For users interested in experimentation, it can be converted into a portable weather station. Additionally, by flashing the ESP32 Marauder firmware, it can function as a lightweight network analysis tool, making it a valuable asset for tech enthusiasts on the go.
WT32-SC01 Plus: Touchscreen Dashboard
Instead of opting for a costly premium PC case with touchscreen capabilities, the WT32-SC01 Plus offers an affordable alternative at approximately $26. This device is ideal for creating PC dashboards, home servers, or NAS monitoring systems. With touch support, users can implement controls for various applications, including extending controls for OBS or adding system functions. Primarily, it serves as a distraction-free dashboard that provides quick access without the need to switch between applications.
Elecrow Rotary Display: A Unique Interface
The Elecrow Rotary Display is available in both 1.28-inch ($29) and 2.1-inch ($36) variants. It combines a round touchscreen with a clickable rotary knob, making it a versatile tool for smart home automation, media control, and creative projects. Users can design custom UI layouts using the LGVL graphics library or Squareline Studio’s UI builder, allowing for tailored functionalities. With the right automation, it transforms into a compact controller for tasks like photo editing, audio mixing, or video editing.
reTerminal E1001 and E1002: E-Paper Displays
The reTerminal series features two ESP32-based ePaper displays: the monochrome E1001 priced at $79 and the color E1002 at $109. These devices come equipped with buttons, a microphone, a buzzer, and a temperature and humidity sensor. While they are not replacements for eReaders like Kindle, they serve as basic eReaders for catching up on RSS feeds or articles. Additionally, they can function as productivity dashboards for to-do lists and calendars, and when idle, they can display digital art, adding aesthetic value to any space.
Elecrow CrowPanel Advanced Display: A Privacy-Focused Hub
The Elecrow CrowPanel Advanced Display, priced at around $60, serves as a privacy-friendly alternative to devices like the Google Nest Hub or Amazon Echo Show. Built around the ESP32-S3 chip, it allows users to flash ESPHome-friendly firmware and integrate it with Home Assistant. While not plug-and-play, it offers the potential to create a versatile hub with voice assistant capabilities, or even a mini arcade machine, as demonstrated by tech enthusiast Adam Conway.
The affordability and flexibility of these ESP32 devices make them ideal for individuals looking to create customized smart home tools without breaking the bank. Whether you aim to build a mini weather station or develop a unique smart display, the options available in the ESP32 ecosystem cater to a range of interests and budgets, enabling endless possibilities for innovation.
