Difference between revisions of "PineBuds Pro"

Revision as of 23:24, 13 January 2023

The PineBuds Pro

The PineBuds Pro are open firmware capable ANC wireless earbuds. Some of the notable features include their light weight, 3 Microphones, ANC (Active Noise Cancellation), ENC (Environment Noise Cancellation) and high fidelity 6mm speaker. It is a fully community-driven side-project which anyone can contribute to, allowing you to keep control of your device even though hardware is proprietary.

Short overview / Specifications

Dimensions:

Earbud: WIP
Charging case: 70 x 50 x 35mm (source)

Weight:

Earbud: 5g
Charging case: 65g

IP Rating of Earbuds: IPX4
Dynamic transducer (speaker): 6mm
Microphone: 3 – FeedForward, FeedBack, Talk
System on Chip (in each earbud): BES 2300YP

CPU: Dual-core 300MHz ARM Cortex-M4F
ROM: 448KB
SRAM: 992KB
BT shared SRAM: 64KB
Flash: 4MB (Endurance erase cycles: >500)

Communication:

Bluetooth: Bluetooth 5.2 dual-mode compliant
USB: USB to dual UARTs at charging case

Battery:

Earbud: Built-in LiPo 3.7V 40mAh
Charging case: Built-in LiPo 3.7V 800mAh

Port:

Earbud: 4 pins
Charging case:
- 4 pogo pins
- USB type-C port 5V 500mA

Software releases

Firmware Images Build

Flash back factory default firmware using Windows based utility:

SDK Release

PineBuds Pro "Little Whale" SDK date:20221128

Wireless charging

PineBuds Pro doesn't have wireless charging by default, but you can add it. However, you need to know how to disassemble the charging case and solder the component to the PCB.

Pine originally planned to have wireless charging for the PineBuds Pro, but apparently for cost reasons they decided to cancel it. However, they left footprints on the PCB for wireless charging component. They also desiged [name of component] component to be used.

SoC and Memory Specification

Based on BES 2300YP

SoC Architecture

CPU Features:
- Dual-core ARM Cortex-M4F Processor Processor up to 300MHz CPU

- CMOS Single-chip Fully-integrated RF, PMU, Audio CODEC and Cortex-M4F CPU
Memory Features:
- 4MB Serial Flash On-chip for Custom Program
- Internal ROM 448KB for critical constants and code
- Internal SRAM 992KB for critical data and code
BT Features:
- Bluetooth 5.2 dual-mode compliant
Audio Features:
- Support BES Intelligent Bluetooth Retransmission (IBRT)
- Support FF/Hybrid ANC
- Dual MICs noise reduction
- Echo Cancellation
- Support low power voice activity detection
- Multi-band EQ and Bass enhancement
- Support Active Crossover
- Support TWS
- HiFi Stereo Audio DAC: 120dB SNR, 110dB DNR
- HiFi Stereo Audio ADC: 100dB SNR
- Sample rates from 8 kHz to 384 kHz
- Support dual/single Mic noise suppression
- Support ambient awareness
- Support talk through
- 24-bit audio processing
PMU Features
- 3.1V-5.5V Input for VBAT
- Internal LPO for low power mode.
- DCXO with internal oscillator circuit
- Internal temperature sensor

Information, Schematics and Certifications

Charging Case with two Left and Right earbuds
Input Power: DC 5V @ 0.5A USB Type-C
Document:
- PineBuds Pro User Manual
Schematic:
- PineBuds Pro Earbuds Schematic 20220817
- PineBuds Pro Charging Case Schematic 20220915
Certifications:

Datasheets for Components and Peripherals

@@ Line 44: / Line 44: @@
 * [https://files.pine64.org//SDK/PineBudsPro/PineBudsPro_SDK-20221128.7z PineBuds Pro "Little Whale" SDK date:20221128]
+== Wireless charging ==
+PineBuds Pro doesn't have wireless charging by default, but you can add it. However, you need to know how to disassemble the charging case and solder the component to the PCB.
+Pine originally planned to have wireless charging for the PineBuds Pro, but apparently for cost reasons they decided to cancel it. However, they left footprints on the PCB for wireless charging component. They also desiged [name of component] component to be used.
 == SoC and Memory Specification ==

Difference between revisions of "PineBuds Pro"

Revision as of 23:24, 13 January 2023

Contents

Short overview / Specifications