スマートフォンからESP32へ指示を出したり、ESP32同士で通信するのに近距離であればBluetoothがとても便利です。今回はESP32におけるBluetooth通信のうち受信についての紹介をします。 Bluetoothプログラムを他のものに流用しやすくするため、それ以外の部分は ...

Using Bluetooth on a desktop computer is now such a seamless process; it’s something built-in and just works. Behind that ubiquity is a protocol layer called HCI, or Host Controller Interface, a set ...

Typically associated with circuitry projects and real-time operating systems, microcontrollers are great for tinkerers who prefer working with embedded devices. But unlike their SBC counterparts, you ...

無線通信対応SoC「ESP32」などの開発で知られるEspressif Systemsが、RISC-VベースのSoC「ESP32-C5」の量産を開始しました。 ESP32-C5 2.4 ...

Arduino has introduced a Nano shaped board with a Wi-Fi and Bluetooth LE capable Espressif’s ESP32-S3 microcontroller, supporting it with the Arduino IDE and MicroPython. “Beginners can explore in an ...

「中国製のBluetoothチップにバックドアが仕掛けられていた」 そんなニュースを目にして不安になった方も多いのではないでしょうか？ 結論を先に言うと、今回「バックドア」と報じられたものは、実際には「開発時のデバッグ用コマンドが残っていただけ ...

The cheap WLAN and Bluetooth chips from the manufacturer Espressif, ESP32, contain undocumented commands in the Bluetooth hardware communication in current firmware versions. This opens up a security ...

We probably don’t need to tell the average Hackaday reader that the ESP32 is a powerful and extremely flexible microcontroller. We’ve seen some incredible projects using this affordable chip over the ...

Espressif’s popular ESP32 microchip, found in over a billion devices, has been caught with its digital trousers down, thanks to an undocumented "backdoor" lurking in its Bluetooth firmware. For those ...

Update 3/9/25: After receiving concerns about the use of the term 'backdoor' to refer to these undocumented commands, we have updated our title and story. Our original story can be found here. The ...