SnowBOARD
egeozgul·SnowBOARD·Design Files/snowBoard.kicad_pcb
About the SnowBOARD PCB
SnowBOARD is an open source AVR/Arduino PCB design by egeozgul, published on GitHub. It is a 2-layer board measuring 125.7 × 64.9 mm, with 72 components from 25 distinct parts.
Its main chip is the ATmega8U2-AU, from the AVR/Arduino family. Other key parts include the NCP1117-5.0_TO252, ATmega2560-16AU and NCP1117-3.3_TO252. By type, the board carries 22 resistors, 9 capacitors, 6 ICs, 5 connectors, 3 diodes and 1 switch.
From the project
Key features include an integrated SD card slot for data storage, a comprehensive battery power management circuit for portable applications, a USB Type-C interface for modern connectivity, and a built-in USB-to-UART converter that simplifies debugging and firmware uploads. This
Key features include an integrated SD card slot for data storage, a comprehensive battery power management circuit for portable applications, a USB Type-C interface for modern connectivity, and a built-in USB-to-UART converter that simplifies debugging and firmware uploads. This design approach makes embedded prototyping more accessible while maintaining professional-grade functionality for developers at all skill levels.

Main components on the SnowBOARD
SnowBOARD bill of materials (BOM)
72 components, 25 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ATmega8U2-AU | TQFP-32_7x7mm_P0.8mm | U1 |
| 3 | NCP1117-5.0_TO252 | TO-252-2 | U3, U5, U6 |
| 1 | ATmega2560-16AU | TQFP-100_14x14mm_P0.5mm | U4 |
| 1 | NCP1117-3.3_TO252 | TO-252-2 | U7 |
| 2 | Conn_02x03_Odd_Even | PinHeader_2x03_P2.54mm_Vertical | J1, J2 |
| 1 | USB_C_Receptacle | USB_C_Receptacle_Amphenol_12401548E4-2A | J3 |
| 1 | Micro_SD_Card_Det_Hirose_DM3AT | microSD_HC_Hirose_DM3AT-SF-PEJM5 | J4 |
| 1 | Conn_01x02 | PinHeader_1x02_P2.54mm_Vertical | J5 |
| 1 | Conn_01x03 | JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | 2s_battery_pin1 |
| 9 | Conn_01x04 | JST_EH_B4B-EH-A_1x04_P2.50mm_Vertical | 3S_battery_pin1, Anemometer1, BNO55, Extra1, Extra2, GPS1, Transceiver1, Windvane1 +1 |
| 1 | Fuse | Fuse_1206_3216Metric_Pad1.42x1.75mm_HandSolder | 500ma1 |
| 3 | 100uF | CP_Radial_D6.3mm_P2.50mm | Cb1, Cb2, Cb3 |
| 2 | 16mhz | Crystal_HC49-U_Vertical | Crystal1, Crystal2 |
| 10 | Conn_01x03 | PinHeader_1x03_P2.54mm_Vertical | PWM_I/O1, PWM_I/O2, PWM_I/O3, PWM_I/O4, PWM_I/O5, PWM_I/O6, PWM_I/O7, PWM_I/O8 +2 |
| 1 | SW_MEC_5E | SW_PUSH_6mm_H13mm | SW1 |
| 3 | greenLED | LED_0603_1608Metric_Castellated | D1, D2, D3 |
| 4 | 22p | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C10, C11 |
| 1 | 1u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3 |
| 4 | 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4, C5, C12, C13 |
| 5 | 10K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R3, R4, R8, R15 |
Show 5 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 27 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R14 |
| 2 | 22 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R6 |
| 7 | 1K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7, R9, R10, R11, R12, R13, R28 |
| 3 | 2K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R22, R23, R24 |
| 3 | 3K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R25, R26, R27 |
SnowBOARD design files
The KiCad project lives in the egeozgul/SnowBOARD repository on GitHub; these links point at the commit this page was built from.
SnowBOARD: common questions
What microcontroller does the SnowBOARD use?
The SnowBOARD is built around the ATmega8U2-AU, from the AVR/Arduino family.
How big is the SnowBOARD PCB?
The SnowBOARD measures 125.7 × 64.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the SnowBOARD?
72 components, from 25 distinct parts. The full bill of materials is listed on this page.
Where can I download the SnowBOARD design files?
From the egeozgul/SnowBOARD repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the SnowBOARD design in my own project?
The repository has no license, so all rights stay with egeozgul. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the SnowBOARD without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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