Should you throw away your CC41 HM-10 clones now that Android 8 is here? 42

Should you throw away your CC41 HM-10 clones now that Android 8 is here?
With the release of Android 8.0 (“Oreo”), I as well as others have noticed that they cannot find some HM-10 clone BLE modules when scanning for them with an Android 8.0 phone. Why is that happening and what can you do about it? tl;dr, the issue is due to a bug in the firmware of ...

Fixing a bad STATE pin on an MLT-BT05 BLE module 22

Fixing a bad STATE pin on an MLT-BT05 BLE module
This is a follow up article to the detailed review of the MLT-BT05 BLE module. In that previous post I mentioned that I got some MLT-BT05 modules with their STATE pin floating. No working STATE pin was an issue for me and I decided to investigate the cause. Update: same issue was observed with Bolutek ...

MLT-BT05 BLE module – a clone of a clone?? 147

MLT-BT05 BLE module - a clone of a clone??
Previously I covered the HM-10 Bluetooth Low Energy (BLE) module and its clone, the CC41-A.  Those are two popular modules that allow simple BLE communication through a serial interface and are handy with Arduinos and other hobby micro controllers. Make sure you read that article first as it provides important background for this curious update. ...

HM-10 or CC41-A module? Automatic Arduino BLE module identification 97

HM-10 or CC41-A module? Automatic Arduino BLE module identification
Lately I am working a lot with Arduino, which is a new field for me, hence fewer posts. Arduino is a very popular entry level embedded electronics platform. My latest Arduino project features Bluetooth Low Energy (BLE) communication. Arduino boards have no built-in BLE capabilities so I was looking to add a BLE module to ...