Uart

Adtran 411 Security Audit Adtran produces equipment for fiber ISPs. I was provided an Adtran 411 by my current ISP for Internet access and decided to take a deep look into it. Hardware The Adtran 411 is a small GPON fiber ONT (Optical Network Terminal) designed to give symmetrical gigabit fiber Internet to SOHO users. It connects to the ISP via a GPON uplink and provides the user a normal ethernet RJ-45 connector to plug their router into and a RJ-11 port for a landline to be tunneled over VOIP. ...

This post outlines a security assessment of the new Sena Wifi Adapter I performed last summer for fun. With the world on lock-down due to COVID-19, I spent a lot of time last summer escaping the city going on motorcycle rides through the mountains and forests surrounding the bay area. It’s the perfect social distance activity because if you get within 6ft of someone you are likely to crash. One of my favorite motorcycle accessories is my Sena headset. It allows me to listen to navigation or music from my phone over Bluetooth while riding, and talk to other riders in my group. ...

A while ago I received a bunch of bare ESP-WROOM-02 chips on tape, but I could not find enough documentation to program them (partially out of laziness). With my recent interest in ESPHome, I decided to give them another try. This blog post contains the results of my research on how to program them. ESP-WROOM-02 The ESP-WROOM-02 is just a ESP8266 underneath. If you don’t have a breakout board like me, then you will need a UART adapter and make a few minimal solder connections to set the various boot modes to allow you to program the firmware. Once programmed for the first time, you can use OTA updates to allow flashing firmware over WiFi and not need to mess with the wiring every time you want to reprogram it. ...