4 layers89 × 81 mm
DKWS PCB
danielkluka/Diploma-Thesis
Design of a Secure Data Transmission System in NB-IoT Environment
121 partsMIT
6 layers96 × 129 mm
Brain Rot Pod Nano PCB
ParthDhiman32/BrainRot-Pod-nanoBrainRot Pod Nano is an overengineered Embedded system project wth complex PCB and beautiful CAD enclosure mainly made for playing meme sounds and also can work as a mini music player
- Size
- 96 × 129 mm
- Copper layers
- 6
- Thickness
- 1.6 mm
- Parts
- 63
- Nets
- 76
- Pads
- 323
- Tracks, vias
- 646, 146
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 3 Aug 2026
- Updated
- 9 Aug 2026
Overview
Brain Rot Pod Nano PCB is an open-source printed circuit board by ParthDhiman32, from the ParthDhiman32/BrainRot-Pod-nano repository on GitHub, published under the MIT licence. It is a 6-layer board of 96 × 129 mm with 63 parts on 76 nets, routed with 646 tracks and 146 vias.
It is built around the ESP32-S3-WROOM-1-N8, AP2112K-3.3 and DW01A, with the PCM5102APW, TP4056 and FS8205 among its other parts. Its parts include 18 capacitors, 15 resistors, 10 switches, 6 ICs and 5 connectors. It belongs with the ESP32 boards of this library.
Main components
6
ESP32-S3-WROOM-1-N8
SMD,25.5x18mm-40℃~+85℃ -98.2dBm 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA Bluetooth5.0 ESP32-S3 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
DW01A
SOT-23-6L-40℃~+85℃ 1 2.5V 300mV~10V 3uA 4.3V Protection IC Support SOT-23-6L Battery Management ROHSPUOLOPBattery Management
PCM5102APW
TSSOP-20-25℃~+85℃ 1.8V~3.3V 2 32 384kHz 500uA 50MHz Audio Decoder Digital filtering、Power-down mode I2S TSSOP-20 ADCs/DACs - Special Purpose ROHSTexas InstrumentsADCs/DACs - Special Purpose
TP4056
ESOP-8-40℃~+85℃ 1 1A 35uA 4.2V 4V~6.5V Charging IC Lithium Battery Support Support 恒流充电、恒压充电、涓流充电、自动再充电、充电终止、可编程充电电流、软启动、欠压锁定 ESOP-8 Battery Management ROHSUMWBattery ManagementFS8205
SOT-23-6-55℃~+150℃ 1.2V 1W 2 N-Channel 20V 37mΩ@2.5V 6A N-Channel SOT-23-6 MOSFETs ROHSFORTUNEMOSFETs
README
README.mdBrainRot-Pod-nano
BrainRot Pod Nano is an overengineered Embedded system project wth complex PCB and beautiful CAD enclosure mainly made for playing meme sounds and also can work as a mini music player
Motivation to create this and Outline of features
okay so this sounds like a really dumb project but the thing is this is a really good project infact this project will help me sharpen my PCB and CAD skills to a even newer level Because i will try my best to Make this project as polished as possible like i want to make this project as perfect as it could be I wanted to make a project to see what level are my skills are at.
My goals for this project are to mainly have a Beauitiful! PCB which is really pleasing to an engineers eyes and to also design an enclosure which encapsulates the beauty of the PCB while itself mantaining a really Smooth Sleek and Matte design
This project will have a shitload of features ranging from a rotatory encoder to adjust the volume to a SD card module to load your songs to and even a AUX Jack because..WHY NOT!!!
I want to mantain a sleek design like how apple iPODs used to be like and also make my own UI and UX for this project and Many tactile buttons for feedback maybe i'll even add a vibrating motor for haptic feedback
Main Components Used:
- ESP32-S3-WROOM-1 Module
- PCM5102A - Audio DAC
- MAX98357A - Audio Amplifer
- TP4056 - Li-Po charger IC
- DW01A - Battery Protection IC
- FS83205A - Power Mosfet
- ME6211 - LDO Regulator
- AO3400 - BacLight Switch for TFT
- 1.54" SPI TFT display
- Li-Po battery - 1100mAh 3.7V
- Speaker - 3W 4Ω dynamic speaker
- Rotary Encoder SMD
- Tactile Buttons SMD
- USB C connector - 16 pin tactile receptacle
- Audio Jack - PJ-320A 3.5mm Stereo Audio Jack
- SD Card slot - Push Pull SD card slot
- Battry connector - JST battery connector
- A lot of passive resistors
- A lot of passive capacitors
- M2 screws
Reason for selection of each part
-
ESP32-S3-WROOM-1 Module - this specific module was selected because it has 8MB of PSRAM which acts as the DMA audio buffer also because it has more than enough processing power and as it also has wifi and bluetooth i can add these features later to my project
-
PCM5102A - Normally audio DACs require bulky DC blocking Capacitors but as this IC has a negative voltage rail which produces ground centered Audio this eliminates the need of those bulky DC Blosking capacitors
-
MAX93857A - this is an Mono Class-D audio amplifer IC (amp for short) and it shares the common I2C bus as the DAC and also it will shut off automatically when the Audio jack / AUX will be connected
-
TP4056 - This is a very common Typical Li-Po battery chargin IC no need for more explanation
-
DW01A - This is a battery protection IC which is paired with TP4056 which provides Short Circuit and overload protection to the battery
-
AP2112K-3.3 - This is a ultra low dropout power regulator meaning it will extract maximum voltage from the Lipo battery before it drops out it drops out around 3.55V unlike older inefficient AMS117 which dropout at around 4.3V
-
ME6211 - efficiently converts the 5V from the power system to 3V3 volts the entire circuitry works on
-
AO3400 - This is a simple PWM switch which will be used to control the intensity of Backlight of the 2.8" TFT Display
-
1.54" SPI TFT display - Very high quality display with vivid range of colours and no grainy text
-
1100mAh Li-Po battery provied long enough battery life that if optmized could give all day long runtime
-
3W 4Ω dynamic speaker - Loud enough speaker and also can be driven Efficiently by our Audio amplifier circuitry
-
Rotary Encoder - To simply control the Volume
-
Tactile Buttons - Buttons with 5-20N of actuation force so that it gives a premium click! feel
-
USB C connector - for charging the battery and flashing / Updating the firmware
-
Audio Jack - Only to connect external wired earphones
-
SD Card slot - Ti store Songs / MEME sounds
-
Battery Connector - A JST batter connector to prevent accidental rever polatiy connections
-
- resistors and capacitors - Do i even need to explain why this is needed
-
M2 screws are small enough to be screwed and not be noticed easily
PCB Schematics
Complete Schematic
Complete PCB
Op-Amps & Audio Circuit
Power System
ESP32 & Peripheral Connections
CAD DESIGN
BOM
| # | Component | Qty | Estimated Unit Cost | Estimated Total |
|---|---|---|---|---|
| 1 | ESP32-S3-WROOM-1, 8MB PSRAM | 1 | $3.70 | $3.70 |
| 2 | PCM5102A Audio DAC | 1 | $1.25 | $1.25 |
| 3 | MAX98357A Class-D Audio Amplifier | 1 | $1.05 | $1.05 |
| 4 | TP4056 Li-Po Charger IC | 1 | $0.16 | $0.16 |
| 5 | DW01A Battery Protection IC | 1 | $0.11 | $0.11 |
| 6 | FS8205A / FS83205A Battery Protection MOSFET | 1 | $0.11 | $0.11 |
| 7 | ME6211 / AP2112K 3.3V LDO | 1 | $0.16 | $0.16 |
| 8 | AO3400 Backlight MOSFET | 1 | $0.08 | $0.08 |
| 9 | 1.54" SPI TFT Display | 1 | $2.63 | $2.63 |
| 10 | 3.7V 1100mAh Li-Po Battery | 1 | $3.15 | $3.15 |
| 11 | 3W 4Ω Dynamic Speaker | 1 | $1.05 | $1.05 |
| 12 | SMD Rotary Encoder | 1 | $0.42 | $0.42 |
| 13 | SMD Tactile Buttons | ~6 | $0.05 | $0.32 |
| 14 | USB-C 16-Pin Receptacle | 1 | $0.21 | $0.21 |
| 15 | PJ-320A 3.5mm Stereo Audio Jack | 1 | $0.21 | $0.21 |
| 16 | Push-Pull SD Card Socket | 1 | $0.42 | $0.42 |
| 17 | JST Battery Connector | 1 | $0.16 | $0.16 |
| 18 | Resistors | ~20–30 | — | $0.32 |
| 19 | Capacitors | ~20–30 | — | $0.63 |
| 20 | Misc. Diodes / LEDs / Small Components | — | — | $0.32 |
| 21 | M2 Screws + Mechanical Hardware | — | — | $0.53 |
| TOTAL ROUGH BOM ESTIMATE | ≈ $17.01 | |||
| Recommended Budget Range | $17–$20 |
Note: This is a rough prototype estimate. Actual prices may vary depending on the supplier, exact MPNs, quantity, shipping, and taxes. PCB manufacturing, assembly, and 3D-printing costs are not included.
Parts
63| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C3, C6, C7, C9, C10, C11, C14, C16, C17 |
| 7 | 10uF | Capacitor_SMD:C_0805_2012Metric | C1, C2, C4, C5, C8, C15, C18 |
| 4 | 4.7kR | Resistor_SMD:R_0805_2012Metric | R3, R11, R12, R13 |
| 3 | 100R | Resistor_SMD:R_0805_2012Metric | R6, R9, R10 |
| 3 | 10kR | Resistor_SMD:R_0805_2012Metric | R8, R16, R17 |
| 3 | 1kR | Resistor_SMD:R_0805_2012Metric | R4, R5, R7 |
| 2 | 2.2uF | Capacitor_SMD:C_0805_2012Metric | C12, C13 |
| 2 | 5.1kR | Resistor_SMD:R_0805_2012Metric | R1, R2 |
| 2 | UI4 | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW5, SW10 |
| 1 | ABORT | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW7 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U4 |
| 1 | AudioJack | Connector_Audio:Jack_3.5mm_CUI_SJ1-3523N_Horizontal | J3 |
| 1 | BOOT | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW6 |
| 1 | DW01A | Package_TO_SOT_SMD:SOT-23-6 | U3 |
| 1 | EN_PUSH | Button_Switch_THT:SW_PUSH-12mm | SW8 |
| 1 | ESP32-S3-WROOM-1 | RF_Module:ESP32-S3-WROOM-1 | U1 |
| 1 | FS8205 | Package_SO:TSSOP-8_4.4x3mm_P0.65mm | Q1 |
| 1 | GLED | LED_SMD:LED_0805_2012Metric | D2 |
| 1 | IO0_Push | Button_Switch_THT:SW_PUSH-12mm | SW9 |
| 1 | JST_Battery_Conn | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J2 |
| 1 | LOGO | LOGO | G*** |
| 1 | MAX98357A | Package_DFN_QFN:TQFN-16-1EP_3x3mm_P0.5mm_EP1.23x1.23mm | U6 |
| 1 | Micro_SD_Card | Connector_Card:microSD_HC_Hirose_DM3AT-SF-PEJM5 | J5 |
| 1 | PCM5102A | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U5 |
| 1 | RLED | LED_SMD:LED_0805_2012Metric | D1 |
| 1 | Rotary Encoder | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW1 |
| 1 | Speaker | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | LS1 |
| 1 | TFT_Conn | Connector_PinHeader_2.54mm:PinHeader_1x09_P2.54mm_Vertical | J4 |
| 1 | TP4056 | Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm_ThermalVias | U2 |
| 1 | UI1 | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW2 |
| 1 | UI2 | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW3 |
| 1 | UI3 | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW4 |
| 1 | USB-C | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
The 59 most common of 63 parts.
Similar boards
- 2 layers151 × 95 mm
Deneme
g210101021/OpenStylophone-RP2040
Overview • Technical Summary • Architecture • Hardware Audit & Remediation • Schematic Subsystems • PCB Layout • Firmware Roadmap • Bill of Materials • Author
143 parts - 4 layers70.9 × 75 mm
Flagshep Audio Player V1
HYLDAIC/Flagshep-V1_Audio-Player
A high fidelity semi-portable audio player student project with provided PCB files, 3D files and Code
77 parts1CERN-OHL-P-2.0 - 2 layers100 × 60.6 mm
- 2 layers100 × 71 mm
3mode controller
nguterresn/3mode-controller
This versatile hardware controller is designed to seamlessly integrate with a variety of wireless communication protocols, making it an ideal choice for hobbyist projects, DIY electronics, and prototyping.
37 parts - 2 layers230 × 85 mm
Le chiff ble hotswap
MangoIV/le_chiff_ble
A drop-in replacement-PCB for the beautiful le_chiffre
117 parts52GPL-3.0 - 2 layers23 × 15.6 mm
Tp4056 battery
Cyclone-92/TP4056-LiPo-charger-with-DW01A-and-FS8205A-MOSFET-protection
Kicad8 PCB design for LIPO single cell charger with TP4056 and DW01 protection
18 parts5 - 2 layers196.1 × 87.8 mm
Questions
How big is the Brain Rot Pod Nano PCB PCB?
It measures 96 × 129 mm and has 6 copper layers, 1.6 mm thick.
What parts does the Brain Rot Pod Nano PCB use?
63 parts, built around the ESP32-S3-WROOM-1-N8, AP2112K-3.3, DW01A and PCM5102APW. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Brain Rot Pod Nano PCB KiCad files?
From the ParthDhiman32/BrainRot-Pod-nano repository on GitHub, at the commit this page was made from: the board is PCB/Brain_Rot_Pod_Nano_PCB/Brain_Rot_Pod_Nano_PCB.kicad_pcb and its schematic PCB/Brain_Rot_Pod_Nano_PCB/Brain_Rot_Pod_Nano_PCB.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Brain Rot Pod Nano PCB design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).