It is the bottom board of BC04-BK, support most common type bluetooth core board: BC04-B, EC04-B, do not fully support HC05/HC06.
- Maxium input voltage 7V, LDO XC6206
- Output pins: Key, TXD, RXD, 3V3, 5-7V, GND.
- Key is designed for BC04 to clear the pairing status, can connect to a push key.
- R2 version add software and hardware master/slave mode select, default is software on. To use hardware select, need cut off connection on software ON with middle pin first.
- You can just solder the pins which you need, the rest can be left.
- Each purchase is for one piece of the breakout board.
Schematic please see on this page.