BH2VLF You're overthinking it. Just buy a Bluetooth one directly. It's too difficult to convert a wired one to Bluetooth.
BH2VLF For the "Hand-Me" space, I need to add a Bluetooth module, a battery, and implement the PPT control logic via Bluetooth. Do you think this is straightforward?
BI1JSC BH2VLF It shouldn't be too difficult. I just can't find any reference materials. I don't know how to modify it. I'm currently using a car charger and a handheld microphone to power the handheld device. I haven't figured out how to modify the Bluetooth part yet. However, someone has already done this, and there is a finished product available.