#Bluetooth

Sugar YMP-01 thermal printer on M1 Mac: halftone + 1D 49 F0 nn density command

Tested on M1 Max: Floyd-Steinberg halftone + BLE pacing + a vendor-specific density command `1D 49 F0 nn` to print sharp photos on the Sugar YMP-01 thermal mini printer from Python.

HP Sprocket 200 over RFCOMM on M1 Mac: 11× faster than BLE in 5.38s for 140KB

Tested on M1 Max: switching a Python BLE client to RFCOMM (SPP Ch.2) cuts transfer from ~60s to 5.38s for a 140KB JPEG. Covers PyObjC quirks, macOS Bluetooth entitlement, and an isolation experiment confirming olie.xdev's 'possibly not required' steps.

Investigating PC Control for the Nikon COOLPIX A1000

An experiment log investigating USB/WiFi/BLE connection specs of the Nikon COOLPIX A1000 and attempting PC connection via OSS tools. PTP/IP protocol analysis and gphoto2 testing results.

Reverse-Engineering the HP Sprocket 200 BLE Protocol to Print from a PC

I reverse-engineered the HP Sprocket 200's proprietary BLE protocol (HPLPP) and successfully printed directly from a PC using a Python script.

Controlling the "Mini Printer Sugar" Bluetooth Mini Printer from a PC

Researching and testing how to directly control a smartphone-only Bluetooth thermal mini printer from a PC.