4 layers100 × 100 mm
NotSmart Speaker
BBroadbent/NotSmart-Speaker
A open-hardware, local-first "dumb" smart speaker powered by an ESP32, PCM5100A DAC, TPA3118 Class-D amp, and 20V USB-PD.
102 parts
2 layers48 × 71.2 mm
Custom esp32
meznokto/pcbsCircuit board designs
- Size
- 48 × 71.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 37
- Nets
- 63
- Pads
- 224
- Tracks, vias
- 226, 23
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 6 Dec 2025
- Updated
- 19 Dec 2025
Overview
Custom esp32 is an open-source printed circuit board by meznokto, from the meznokto/pcbs repository on GitHub. It is a 2-layer board of 48 × 71.2 mm with 37 parts on 63 nets, routed with 226 tracks and 23 vias.
It is built around the ESP32-S3-WROOM-1-N8, SN74LV1T34DBV and DS18B20U, with the AMS1117-3.3, USBLC6-2SC6 and WS2812B among its other parts. Its parts include 8 capacitors, 7 ICs, 6 connectors, 5 resistors and 3 diodes. 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
SN74LV1T34DBV
SOT-23-5-40℃~+125℃ 1 1 1.6V~5.5V 10uA 5.5ns@5V,15pF 74LV 8mA 8mA Level shifting Push-pull Unidirectional SOT-23-5 Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
DS18B20U
MSOP-8-55℃~+125℃ 12bit 2.5V~5.5V 400ms 750nA Single-bus ±0.4℃ MSOP-8 Temperature Sensors ROHSUMWTemperature Sensors
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
WS2812B
5mm X 5mm Surface Mount RGB LED with Intelligent ControlWorldsemiUncategorised
Parts
37| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 0u1F | Capacitor_SMD:C_0603_1608Metric | C2, C5, C9, C10 |
| 3 | 10uF | Capacitor_SMD:C_0603_1608Metric | C1, C3, C4 |
| 3 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3 |
| 3 | TestPoint | TestPoint:TestPoint_Pad_4.0x4.0mm | TP1, TP2, TP3 |
| 2 | 5k1 | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | Conn_02x08_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Vertical | J5, J6 |
| 1 | 10k | Resistor_SMD:R_1206_3216Metric | R4 |
| 1 | 1N5819 | Diode_SMD:D_SOD-123 | D1 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric | C8 |
| 1 | 330 | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | 4.7k | Resistor_SMD:R_1206_3216Metric | R5 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | BOOT | Button_Switch_SMD:SW_SPST_PTS645 | SW3 |
| 1 | Barrel_Jack | Connector_Wire:SolderWire-0.75sqmm_1x02_P7mm_D1.25mm_OD3.5mm | J2 |
| 1 | DS18B20U | Package_SO:MSOP-8_3x3mm_P0.65mm | U5 |
| 1 | ESP32-S3-WROOM-1-N8 | RF_Module:ESP32-S3-WROOM-1 | U1 |
| 1 | PWRLED | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | Power_Select | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J3 |
| 1 | RESET | Button_Switch_SMD:SW_SPST_PTS645 | SW1 |
| 1 | SN74LV1T34DBV | Package_TO_SOT_SMD:SOT-23-5 | U4 |
| 1 | SN74LVC2T45DCUR_A->B | Package_SO:VSSOP-8_2.3x2mm_P0.5mm | U7 |
| 1 | SN74LVC2T45DCUR_B->A | Package_SO:VSSOP-8_2.3x2mm_P0.5mm | U6 |
| 1 | Switches | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Vertical | J1 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J4 |
| 1 | WS2812B | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D3 |
Questions
How big is the Custom esp32 PCB?
It measures 48 × 71.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Custom esp32 use?
37 parts, built around the ESP32-S3-WROOM-1-N8, SN74LV1T34DBV, DS18B20U and AMS1117-3.3. 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 Custom esp32 KiCad files?
From the meznokto/pcbs repository on GitHub, at the commit this page was made from: the board is custom_esp32/custom_esp32.kicad_pcb and its schematic custom_esp32/custom_esp32.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Custom esp32 design in my own project?
Its repository states no licence, so its author keeps all rights: ask meznokto before reusing the design.
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