2 layers160 × 160 mm
2 layers95 × 57 mm
SnakeCYD
Nadoooor/SnakeCYDa custom CYD, all in an PCB with snake style
- Size
- 95 × 57 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 39
- Nets
- 47
- Pads
- 208
- Tracks, vias
- 662, 91
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 21 Aug 2026
- Updated
- 31 Aug 2026
Overview
SnakeCYD is an open-source printed circuit board by Nadoooor, from the Nadoooor/SnakeCYD repository on GitHub, published under the MIT licence. It is a 2-layer board of 95 × 57 mm with 39 parts on 47 nets, routed with 662 tracks and 91 vias.
It is built around the ESP32-S3-WROOM-1-N8, AMS1117-3.3 and LESD5D5.0CT1G, with the 1N5819WS and SK6812 among its other parts. Its parts include 11 capacitors, 7 resistors, 7 connectors, 6 diodes and 3 ICs. It belongs with the ESP32 boards of this library.
Main components
5
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
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
LESD5D5.0CT1G
SOD-523-55℃~+150℃ 100W 12pF 16V 1uA 5V 7A 7V Bidirectional ESD IEC 61000-4-2 SOD-523 ESD and Surge Protection (TVS/ESD) ROHSGOODWORKUncategorised
1N5819WS
SOD-3231 Independent 1A 25A 40V 500uA@40V 600mV@1A SOD-323 Schottky Diodes ROHSGuangdong HottechSchottky Diodes
SK6812
SMD-4P,5.4x5mm-40℃~+85℃ 0.6mA 1.6mm 120° 160mcd~320mcd 1kHz 2000V 280mcd~515mcd 3.7V~5.5V 460nm~470nm 520nm~530nm 620nm~625nm 800Kbit/s 815mcd~1275mcd Built-in power-on reset circuit Semi-transparent lens SMD-4P,5.4x5mm RGB LEDs(Built-in IC) ROHSOPSCO OptoelectronicsRGB LEDs(Built-In IC)
README
README.mdSnakeCYD
Description:
SnakeCYD is a custom CYD, all in an PCB with snake slickscreen and with ESP32-s3 instead of a regular ESP32 chip.
Why iam making this:
I was planning to get a CYD, but I got to know that it has a regular ESP32 on it instead of the S3, so i decided to make my own and add my snake slikscreen and also added bigger connectors for the wiring protocols and also some free pins.
Featrues:
- Big JST connectors
- Free GPIO with PinSockets
- USB Type C
- Onboard Neopixel
- ESP32-S3 chip inside.
Photos:
PCB:
3D PCB:
Schematic:
First Page:
Second Page:
Pinout:
| ESP32-S3 Pin Label | Signal / Net Name |
|---|---|
| IO1 | TFT_BL |
| IO4 | TFT_DC |
| IO5 | I2C_SDA |
| IO6 | I2C_SCL |
| IO7 | SPI_MOIS |
| IO8 | SPI_CLK |
| IO9 | SPI_MISO |
| IO10 | ANY_CS |
| IO11 | SPI2_MOIS |
| IO12 | SPI2_CLK |
| IO13 | SPI2_MISO |
| IO14 | TFT_CS |
| IO15 | T_CS |
| IO16 | SD_CS |
| IO17 | TX |
| IO18 | RX |
| IO21 | T_IRQ |
| TXD0 | 0TX |
| RXD0 | 0RX |
How to use:
- Connect the SnakeCYD to you PC/Laptop.
- Download the firmware source code you want to use.
- Edit the pinout using the table above.
- Build the firmware and flash it.
- Enjoy.
How to build:
- Print the board.
- Assemble all the components.
- Enjoy.
Made with ❤️, By Nadoooor
Parts
39| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 0.1 uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C5, C6, C7, C8, C10 |
| 4 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R5, R6, R7 |
| 3 | 10uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3, C4, C9 |
| 3 | LESD5D5.0CT1G | Battery-extra:TVS_LESD5D5.0CT1G | D7, D8, D9 |
| 3 | SW_MEC_5E | RAM:SW_Push_1P1T_NO_CK_KMR2 | Boot, On/Off, RST |
| 2 | 5k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2 |
| 2 | LOGO | LOGO | G***, G*** |
| 1 | 0UART | Connector_JST:JST_XH_S4B-XH-A-1_1x04_P2.50mm_Horizontal | J6 |
| 1 | 10uf | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1 |
| 1 | 1N5819WS | Diode_SMD:D_SOD-323 | D5 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C11 |
| 1 | 7.5k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | ESP32-S3-WROOM-1 | RF_Module:ESP32-S3-WROOM-1 | U1 |
| 1 | GPIO | Connector_PinSocket_2.54mm:PinSocket_1x10_P2.54mm_Horizontal | J7 |
| 1 | I2C_1 | Connector_JST:JST_XH_S4B-XH-A-1_1x04_P2.50mm_Horizontal | J3 |
| 1 | I2C_2 | Connector_JST:JST_XH_S4B-XH-A-1_1x04_P2.50mm_Horizontal | J5 |
| 1 | LED | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D6 |
| 1 | SK6812 | LED_SMD:LED_SK6812_PLCC4_5.0x5.0mm_P3.2mm | D1 |
| 1 | SPI | Connector_JST:JST_XH_S6B-XH-A-1_1x06_P2.50mm_Horizontal | J4 |
| 1 | TFT_320x240 | Display-extra:TFT-320x240 | U2 |
| 1 | UART | Connector_JST:JST_XH_S4B-XH-A-1_1x04_P2.50mm_Horizontal | J2 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_Amphenol_12401610E4-2A_CircularHoles | J1 |
Questions
How big is the SnakeCYD PCB?
It measures 95 × 57 mm and has 2 copper layers, 1.6 mm thick.
What parts does the SnakeCYD use?
39 parts, built around the ESP32-S3-WROOM-1-N8, AMS1117-3.3, LESD5D5.0CT1G and 1N5819WS. 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 SnakeCYD KiCad files?
From the Nadoooor/SnakeCYD repository on GitHub, at the commit this page was made from: the board is PCB/SnakeCYD.kicad_pcb and its schematic PCB/ESPCIR.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the SnakeCYD 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).
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