Here we have it! After several years I’ve developed new version of Bluetooth ( BLE ) controller for very popular Bescor MP 101.
Bescor MP 101
Adafruit ItsyBitsy nRF52840
7 Pin DIN header
Android App – https://github.com/xchg-dot-ca/Android-nRF-UART-Bescor
Arduino code – https://github.com/xchg-dot-ca/BescorMP101nRF52
Video how to build
I love my so much more easier and compact Bluetooth version of Bescor MP 101