Snaaur v1
About the Snaaur v1 PCB
Snaaur v1 is an open source STM32 PCB design by duongngochoan, published on GitHub. It is a 2-layer board measuring 90.9 × 38.4 mm, with 54 components from 33 distinct parts.
Its main chip is the L7805, from the STM32 family. Other key parts include the AMS1117-3.3, STM32F103C8Tx and HC-05. By type, the board carries 15 capacitors, 12 resistors, 11 connectors, 7 LEDs, 4 ICs and 1 crystal.
It belongs with the robotics & motion and sensors designs in this gallery.
From the project
Used a PID control algorithm and MPU605 sensor to balance a two-wheeled robot.
Main components on the Snaaur v1
Snaaur v1 bill of materials (BOM)
54 components, 33 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | L7805 | TO-252-2 | U1 |
| 1 | AMS1117-3.3 | SOT-223-3_TabPin2 | U2 |
| 1 | STM32F103C8Tx | LQFP-48_7x7mm_P0.5mm | U3 |
| 1 | HC-05 | XCVR_HC-05 | U4 |
| 1 | Crystal | Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering | Y1 |
| 1 | POWER | TerminalBlock_Altech_AK300-2_P5.00mm | J1 |
| 1 | Debug | PinHeader_1x04_P2.54mm_Vertical | J2 |
| 1 | boot | PinHeader_1x03_P2.54mm_Vertical | J3 |
| 1 | MPU6050 | PinHeader_1x10_P2.54mm_Vertical | J4 |
| 2 | Conn_01x02_Pin | PinHeader_1x02_P2.54mm_Vertical | J5, J7 |
| 1 | Motor1 | PinHeader_1x06_P2.54mm_Vertical | J6 |
| 1 | Motor2 | PinHeader_1x06_P2.54mm_Vertical | J8 |
| 1 | PWM1 | FanPinHeader_1x03_P2.54mm_Vertical | J9 |
| 1 | PWM2 | FanPinHeader_1x03_P2.54mm_Vertical | J10 |
| 1 | 5V_OUT | PinHeader_1x03_P2.54mm_Vertical | J11 |
| 1 | Fuse | Fuse_1812_4532Metric_Pad1.30x3.40mm_HandSolder | F1 |
| 2 | SW_Push | SW_DIP_SPSTx01_Slide_6.7x4.1mm_W6.73mm_P2.54mm_LowProfile_JPin | NRST1, NRST2 |
| 1 | RED | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | 2V1 |
| 1 | YELLOW | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | 2V2 |
| 1 | GREEN | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | 2V3 |
Show 13 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | LED | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | 3V1, 5V1, 5V2, 5V3 |
| 1 | RS1M | DIOM4330X250N | D1 |
| 1 | 1u, 16V | CP_EIA-3216-18_Kemet-A_Pad1.58x1.35mm_HandSolder | C1 |
| 2 | 100nF,50V | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C15 |
| 9 | 100n | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3, C4, C5, C6, C7, C8, C10, C13 +1 |
| 2 | 22p | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C9, C11 |
| 1 | 4.7u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C12 |
| 1 | 1k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1 |
| 3 | 330 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R8, R10 |
| 2 | 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R21 |
| 2 | 0 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6, R7 |
| 3 | 470 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R16, R17, R19 |
| 1 | 2.2k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R20 |
Snaaur v1 design files
The KiCad project lives in the duongngochoan/Self_balancing_robot_PID repository on GitHub; these links point at the commit this page was built from.
Snaaur v1: common questions
What microcontroller does the Snaaur v1 use?
The Snaaur v1 is built around the L7805, from the STM32 family.
How big is the Snaaur v1 PCB?
The Snaaur v1 measures 90.9 × 38.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Snaaur v1?
54 components, from 33 distinct parts. The full bill of materials is listed on this page.
Where can I download the Snaaur v1 design files?
From the duongngochoan/Self_balancing_robot_PID repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Snaaur v1 design in my own project?
The repository has no license, so all rights stay with duongngochoan. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Snaaur v1 without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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