Arduino, ESP32/8266, Bluetooth, and stuff
The JDY-31 is a fairly simple Bluetooth 3.0 SPP module than can be used as a HC-06 replacement. It should be noted that it is not a direct replacement though as the AT commands are not identical. Bluetooth 3.0 is still Bluetooth classic but has an increased theoretical transmission speed of up to 24 Mbps. … Read more
The below are the official/original H-06 modules from Guangzhou Huicheng Information Technology Co., Ltd. (HC Huicheng Information for short) / Wavesen. The latest version has firmware hc01.comV2.0 and a blue LED but there are still many of the older versions around with firmware linvorV1.8, no blue LED. Both work the same. The newer firmware has … Read more
Android Bluetooth serial apps come and Android Bluetooth serial apps go. The app I used to use is no longer available in Google Play and I am now using Serial Bluetooth Terminal by Kai Morich. Google Play tells me there are in-app purchases, but, apart from a donate link, I can’t find anything (maybe it’s … Read more
If you have read through the Arduino Serial guides you should now have a good grasp on using serial communication but did you ever stop to ask yourself what actually is serial UART? If you did you are in the right place. UART stands for Universal Asynchronous Receiver-Transmitter which probably doesn’t help explain what it … Read more