H-06/HC-05

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