JBerg—October 31, 2025
The 8266 is quite old at this point and hard to recommend over more modern solutions. They still have their uses but in many cases you can get a more capable ESP32 C family for around the same price. This one at least has 1MB of memory which gives it a bit more usefulness. The board itself is what you'd expect quality-wise. No complaints it's just hard to recommend an 8266 these days unless you have very specific needs for one. In that case, this is a perfectly fine board. Read more
A Philly Customer—November 4, 2025
The ESP-01S ESP8266 WiFi module is an excellent little component for anyone looking to add WiFi capabilities to their electronics projects, especially in IoT and smart home applications. Its build quality is solid, with a compact design that integrates a powerful 32-bit CPU and 1MB of SPI flash memory, providing reliable and efficient performance. The module operates on a stable 3.3V power input and features robust connectivity with 802.11b/g/n standards, ensuring good range and stable data transmission. Its durability in operating temperatures from -20°C to 70°C makes it suited for various environments. Functionally, the ESP-01S supports multiple WiFi modes, including station and access point, making it very versatile. The self-contained system-on-chip design minimizes the need for additional components, simplifying integration into projects. For instance, when used with an Arduino, it can handle WiFi networking effortlessly, saving development time and cost. The module’s low power consumption modes, such as deep sleep at just 0.02mA, are a boon for battery-powered smart home sensors. In a typical scenario, this module would allow you to wirelessly control smart switches or monitor sensors in real time, keeping everything connected smoothly. Overall, the module is cost-effective for hobbyists and professionals alike. Its small form factor, excellent functionality, and low power needs mean it’s an ideal choice for enhancing IoT devices without adding bulk or complexity. If you’re designing a smart home system or any IoT-based application, this ESP-01S module offers a smart, reliable, and budget-friendly WiFi solution that’s easy to program and deploy. Read more
