So my current project makes use of a Bluno Nano, which uses an on-board BLE chip: TI CC2540
due to lack of memory, I am migrating my code to a Teensy 2.0++, an AVR board.
Unfortunately, the board does not have an on-board BLE chip, so i got to buy one.
As the Bluno Nano comes with an on-board BLE with their demo android apk, I simply build my apk based off theirs, and there are no settings/all the AT things i gotta do for normal typical BLE modules so I do not have any experience in that regard.
My Android app would connect to the Bluno, the TextView would display all the Serial.prints like how the Arduino IDE's serial monitor would (as how it works in here)
I've been googling/researching on bluetooth modules the past few days for the right one, and it seems I would require a generic UART bluetooth module(please correct me if I'm wrong).
I also require it to support 5V as due to space constraint, I would not want to add a logic level shifter unless necessary.
I've shortlisted a few, but am not entirely sure if they would work.
Would also most definitely welcome recommendations.
Adafruit Bluefruit LE UART Friend - BLE
Bluefruit LE - nRF8001 Breakout(this bluetooth module seem a little different than the other 2. My project has an sd card breakout too, which uses MOSI, MISO, just like this bluetooth module. probably not suitable?)