I have 2 HC-05'S . One has a green breakout and other has a standard blue breakout. The green one has super fast communication. No delay, high speed transfer. The blue one has significant delay and slow speed. When i tried to see the difference, I noticed that Both used BC417 BUT, they have different end versions. The green on has BC417/143BGQ/K441BL and the other one has BC417/143BGQ/K618BS. Can anyone help me findout whats going pn here? Every other hc-05 now are having the K618BS. Theyre slow. Can you help me find the K441BL chip type and where to get it so that I can re solder it on another breakout board?
And one more thing, The green on has 16 mhz crystal and the blue one has a 26mhz crystal.
Bump*
Bump! Shall I assume No one has the answer to my question?