Genius ESP32 projects that don't require any soldering

The article focuses on ESP32 projects that avoid soldering, addressing a common barrier for DIY electronics and smart home builders. It explains how a Bluetooth proxy can extend Bluetooth device reach by relaying communications from Bluetooth to smart home software via Wi-Fi, using ESPHome’s Bluetooth proxy firmware. For voice control, it contrasts cloud assistants like Alexa with a local voice assistant that runs on the user’s own hardware, reducing reliance on third-party servers and home internet uptime. The piece cites ready-made development kits such as the M5Stack Atom Voice, which integrates an ESP32, microphone and speaker, speech-to-text services, and audio playback, costing around $13. It also introduces a mailbox delivery sensor concept using ESP-NOW, a peer-to-peer protocol that can operate even when home Wi-Fi is down.