Bluetooth silvermate

Wireless & IoT
1

Hello,

I bought bluetooth silver mate from sparkfun. I used the instructions from following link:

https://learn.sparkfun.com/tutorials/us … 1400889417

Everything works fine when I use pro mini 5V (16 MHz), however if I use pro min 3.3V (8MHz), nothing works. I know bluetooth module works from 3.3V to 5V. I changed VCC to 3.8V, still does not work.

Anyone has any suggestions?

2

I did some extra test. Here is my results. If I follow this following link:

http://arduinoandroid.blogspot.com/2011 … rsion.html

Using $$$ command does not do anything. If I try to send a signal via bluetooth, serial port read it as giberish. I am kind of lost here. Anyone has any suggestions? Pls!!