When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
The core module uses the HC-05 slave module. The outgoing interface includes VCC, GND, TXD, RXD, KEY pins, and the Bluetooth connection status pin (STATE). The output is low when not connected, and high after connection.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.