week12

assignment - networking and communications

design, build, and connect wired or wireless node(s) with network or bus addresses and local input &/or output device(s)

i chose to investigate Seeed Studio XIAO ESP32C3 because it has the Wifi/Bluetooth. the board comes included with an external antenna to increase the signal strength for wireless applications. it also has a small and exquisite form-factor combined with a single-sided surface-mountable design. it is equipped with rich interfaces and has 11 digital I/O that can be used as PWM pins and 3 analog I/O that can be used as ADC pins.

i followed tutorials on XIAO ESP32C3 website, first was to connect the antenna to the IPEX connector

first thing was trying to scan bluetooth devices, code:

then, to use XIAO ESP32C3 as a Bluetooth server. i searched for XIAO ESP32C3 board using an ipone app and send out strings to display on the serial monitor

i used the LightBlue app, searched and successfully found MyESP32. under Data format drop-down menu, select UTF-8 String. type "Hello" under WRITTEN VALUES and click WRITE

then i connected a OLED, wanting to display the sent message on the OLED

success