Bluetooth Speaker Main Board

Ongoing

STD Bluetooth Speaker Main Board

License: Public Domain

Mode:

Editors' pick

Update time： 2021-08-18 04:12:09

Creation time： 2021-08-15 07:24:28

Description

This is a design for a Bluetooth amplifier that will be going in an IP68 Project enclosure with 2 2.25" speakers.

MP3 playback will also be supported, and finished off with Capacitive Touch Sensors for the buttons (Using chip TTP223), and LED strip lights to really show off its power.

Microcontroller: Atmel ATmega328p
Capacitive Touch chip: TTP223
Bluetooth Reciever: XS3868
LED strips: Neopixel addressable rings and strips
MP3 Playback chip: YX5300
Battery: LiPo 7.4v 2200mAh

Design Drawing

schematic diagram

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PCB

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BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity
1	0.47uF	C1	CAP-CL-23B-7.03.0P5	1
2	10uF	C2,C3,C4	22UF	3
3	10nF	C5	10NF	1
4	220uF	C6,C7,C8	CAP-D8.0XF3.5	3
5	100nF	C9,C10,C11,C12,C13,C14,C15,C16,C17	RAD-0.2	9
6	1N5819	D1	DO-41	1
7	LM2678T-ADJ_NOPB	IC1	TO127P469X1022X1549-7P	1
8	PAM8403	PAM84031	SOP-16	1
9	XS3868	U1	XS3868 FINAL WASON	1
10	ATMEGA328P	U3	ATMEGA 328P DIL 28 PIN	1
11	100uH	U15	100UH_3A_THT	1
12	AT42QT1010-TSHR	U16,U17,U18,U19,U20,U21,U22,U23,U24	SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BR	9