# Brainstorm a new project with AI [Example] ## Description Battery-Powered Audio/Bluetooth System with External TP4056 Charging, Dual MT3608 Boost Rails, and Star-Grounded Power Domains ## Project Details - **Owner:** deedee0259 - **Created:** 1/27/2026 - **Last Updated:** 1/27/2026 - **Visibility:** Public - **System Architecture:** flowchart TD Battery --> Charger Charger --> SYS SYS --> Boost9[Boost Converter 9V Output] SYS --> Boost5[Boost Converter 5.3V Output] Boost5 --> LDO[LDO 5V Output] - **Layout Partitioning:** Separate PCB into distinct power domains: 5 V zone around MH-M18 module, 9 V zone around AN7112 amplifier, with a central star ground node at net B- serving as the single-point return connection between domains and to connectors. - **Power Requirements:** Battery - **maxY:** 11.325 - **Power Source:** Battery - **boardHeight:** 400.325mm - **Net Type:** Power - **Software:** Arduino - **boardWidth:** 99.05mm - **Connectivity:** Bluetooth - **Manufacturing Quantity Target:** 10 - **maxX:** 44.525 - **Domain:** Consumer Electronics - **Human Interface:** Buttons - **minY:** -379.000 - **minX:** -44.525 - **Operating Voltage:** 9V ## Key Components ### J10 — [PAD WITH HOLE 4mmx1.5mm](https://www.flux.ai/adrian95/pad-with-hole-4mmx15mm~wdx.md) - Role: Connector - Role Details: Power input pad for 5V_IN ground **Pins:** - P1 ### J11 — [PAD WITH HOLE 4mmx1.5mm](https://www.flux.ai/adrian95/pad-with-hole-4mmx15mm~wdx.md) - Role: Connector - Package: Through Hole - Role Details: Power input pad for 9V_IN positive **Pins:** - P1 ### J12 — [PAD WITH HOLE 4mmx1.5mm](https://www.flux.ai/adrian95/pad-with-hole-4mmx15mm~wdx.md) - Role Details: Power input pad for 9V_IN ground - Role: Connector - Package: Through Hole **Pins:** - P1 ### J13 — [0022232031](https://www.flux.ai/adrian95/0022232031~ox7.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: MH-M18 Module Interface (pins: 5V, GND, SIG_OUT) - Manufacturer Name: Molex - Manufacturer Part Number: 0022232031 - Datasheet URL: https://www.molex.com/pdm_docs/sd/022232031_sd.pdf - Role: Connector **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### J4 — [61300411121](https://www.flux.ai/adrian95/61300411121~pw9.md) - Part Type: Connector - Package: Through Hole - Datasheet URL: https://www.we-online.com/components/products/datasheet/61300411121.pdf - Manufacturer Name: Wurth Elektronik - Manufacturer Part Number: 61300411121 - Role: Connector - Role Details: AN7112 Amplifier Module Interface - License: https://creativecommons.org/licenses/by/4.0/ - Package or Case Code: HDRV4W95P0X254_1X4_1016X254X854P **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### J5 — [PAD WITH HOLE 4mmx1.5mm](https://www.flux.ai/adrian95/pad-with-hole-4mmx15mm~wdx.md) - Role Details: Battery positive pad labeled B+ - Role: Connector **Pins:** - P1 ### J6 — [PAD WITH HOLE 4mmx1.5mm](https://www.flux.ai/adrian95/pad-with-hole-4mmx15mm~wdx.md) - Package: 4mmx1.5mm Hole - Role: Connector - Role Details: Battery negative pad labeled B- (star ground) **Pins:** - P1 ### J8 — [PAD WITH HOLE 4mmx1.5mm](https://www.flux.ai/adrian95/pad-with-hole-4mmx15mm~wdx.md) - Role Details: Charging socket negative pad labeled CHG- - Role: Connector **Pins:** - P1 ### J9 — [PAD WITH HOLE 4mmx1.5mm](https://www.flux.ai/adrian95/pad-with-hole-4mmx15mm~wdx.md) - Role: Connector - Role Details: Power input pad for 5V_IN positive **Pins:** - P1 ### P1 — [PAD WITH HOLE 4mmx1.5mm](https://www.flux.ai/adrian95/pad-with-hole-4mmx15mm~wdx.md) - Role: Connector - Role Details: Charging socket positive pad labeled CHG+ **Pins:** - P1 *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/deedee0259/brainstorm-a-new-project-with-ai-example~vb](https://www.flux.ai/deedee0259/brainstorm-a-new-project-with-ai-example~vb).* --- *Generated from [https://www.flux.ai/deedee0259/brainstorm-a-new-project-with-ai-example~vb](https://www.flux.ai/deedee0259/brainstorm-a-new-project-with-ai-example~vb)*