Bluetooth module HM-BT22014L Grove Starter IoT Kit can be combined into many

can be combined into many different sizes and shapes of the battery pack

PV Nylon Head Two Axial plastic

2A Capacity - Sufficient power for most standard applications

RGB Addressable LED Module WS2812B

Bluetooth module HM-BT22014L Grove Starter IoT Kit can be combined into manyBluetooth module HM BT22014LBluetooth Stereo Audio Receiver Module, 3V 5V for Amplifiers Sound Recorder and Sound Circuit Electronic Hobby Kit. This is a Bluetooth audio receiver module, transmitting MP3 and other common audio formats' audio signals. It's simple to set up and use, and once connected to another Bluetooth system such as your phone or laptop, it can receive and translate signals into an output format compatible with speakers. It has