StratoSoar-MK2.1
About the StratoSoar-MK2.1 PCB
StratoSoar-MK2.1 is an open source Microchip SAM PCB design by crnicholson, published on GitHub. It is a 4-layer board measuring 42 × 87.9 mm, with 104 components from 58 distinct parts.
Its main chip is the ATSAMD21G18A-A, from the Microchip SAM family. Other key parts include the MAX-M10S, MPU-9250, ATMEGA328P-A, AT24C512C-SSHD-T and ATXK-H11-E-32.768KHZ-E50-T3. By type, the board carries 32 capacitors, 23 resistors, 12 connectors, 7 ICs, 7 jumpers and 6 transistors.
It belongs with the robotics & motion and power & battery designs in this gallery.
From the project
StratoSoar is an engineering project that aims to be able to fly a glider (dropped from a high-altitude balloon), down to any selected coordinates.
TL:DR: The StratoSoar project is a low-cost, lightweight Unmanned Aerial Vechile (UAV) designed for deployment from a weather balloon at various altitudes, aiming for autonomous and efficient flight to designated GPS coordinates. By offering a more affordable, compact, and lightweight alternative to conventional UAVs, StratoSoar aims to empower educators, researchers, and hobbyists with an accessible platform for exploration and experimentation.
Main components on the StratoSoar-MK2.1
StratoSoar-MK2.1 bill of materials (BOM)
104 components, 58 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MAX-M10S | ublox_MAX | U1 |
| 1 | MPU-9250 | InvenSense_QFN-24_3x3mm_P0.4mm | U2 |
| 1 | ATMEGA328P-A ATmega328P-A | TQFP-32_7x7mm_P0.8mm | U3 |
| 1 | AT24C512C-SSHD-T | SOIC-8_3.9x4.9mm_P1.27mm | U4 |
| 1 | ATXK-H11-E-32.768KHZ-E50-T3 | Crystal_SMD_Abracon_ABM8AIG-4Pin_3.2x2.5mm | U5 |
| 1 | ATSAMD21G18A-A | TQFP-48_7x7mm_P0.5mm | U6 |
| 1 | MCP1700X-330XXTT MCP1700x-330xxTT | SOT-89-3 | U7 |
| 3 | 2N3906 | SOT-23-3 | Q1, Q2, Q3 |
| 3 | DMN1019USN-13 | SC-59_Handsoldering | Q4, Q5, Q6 |
| 1 | 8MHZ 8MHz | Crystal_HC18-U_Vertical | Y1 |
| 1 | 32.768KHZ 32.768kHz | Crystal_C26-LF_D2.1mm_L6.5mm_Horizontal | Y2 |
| 1 | BME280 | PinHeader_1x04_P2.54mm_Vertical | J1 |
| 1 | AT_ISP | PinHeader_2x03_P2.54mm_Vertical | J2 |
| 1 | AT_FTDI | PinHeader_1x05_P2.54mm_Vertical | J3 |
| 1 | Signal | PinHeader_1x11_P2.54mm_Vertical | J4 |
| 1 | USB_C_RECEPTACLE_USB2.0 USB_C_Receptacle_USB2.0 | USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J5 |
| 1 | JTAG | PinHeader_1x05_P2.54mm_Vertical | J6 |
| 1 | Power | PinHeader_1x05_P2.54mm_Vertical | J7 |
| 1 | rudder | PinHeader_1x03_P2.54mm_Vertical | J8 |
| 1 | elevator | PinHeader_1x03_P2.54mm_Vertical | J9 |
Show 38 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | parachute | PinHeader_1x03_P2.54mm_Vertical | J10 |
| 1 | VOUT | Pads_1x02_P2.54mm | J11 |
| 1 | VIN | Pads_1x02_P2.54mm | J12 |
| 1 | Antenna_Chip | RAINSUN_GPS1003 | AE1 |
| 2 | AAA | BatteryHolder_BK-82 | BT1, BT2 |
| 1 | PPS_EN | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | ONE_CELL | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP2 |
| 1 | AT_LED_EN | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP3 |
| 1 | ERR_LED_EN | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP4 |
| 1 | LED_EN | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP5 |
| 2 | XO_EN | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP6, JP7 |
| 1 | AT_RESET | SW_SPST_CK_RS282G05A3 | SW1 |
| 1 | EEPROM | SW_SPDT_PCM12 | SW2 |
| 1 | AAA | SW_SPDT_PCM12 | SW3 |
| 1 | PWR_SW | SW_SPDT_PCM12 | SW4 |
| 1 | RESET | SW_SPST_CK_RS282G05A3 | SW5 |
| 2 | LED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1, D4 |
| 1 | AT_LED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2 |
| 1 | ERR_LED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D3 |
| 1 | BLM18AG121SN1D | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | FB1 |
| 1 | 33NH 33nH | L_0805_2012Metric_Pad1.15x1.40mm_HandSolder | L1 |
| 1 | 10UH 10uH | L_0805_2012Metric_Pad1.15x1.40mm_HandSolder | L2 |
| 13 | 100NF 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C3, C6, C8, C11, C15, C17, C19 +5 |
| 1 | 10NF 10nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2 |
| 4 | 10UF 10uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4, C10, C18, C26 |
| 1 | 1NF 1nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5 |
| 4 | 22PF 22pF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C7, C9, C13, C14 |
| 4 | 1UF 1uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C12, C20, C27, C28 |
| 1 | C_Small | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C16 |
| 1 | 100PF 100pF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C24 |
| 3 | 47UF 47uF | CP_EIA-3528-21_Kemet-B | C30, C31, C32 |
| 4 | 1K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R5, R11, R13 |
| 2 | 1M | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R3 |
| 2 | 220 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R14 |
| 4 | 1.8K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6, R7, R9, R10 |
| 2 | 5.1K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8, R12 |
| 6 | 10K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R15, R16, R17, R18, R19, R20 |
| 3 | 10 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R21, R22, R23 |
StratoSoar-MK2.1 design files
The KiCad project lives in the crnicholson/StratoSoar-MK2 repository on GitHub; these links point at the commit this page was built from.
StratoSoar-MK2.1: common questions
What microcontroller does the StratoSoar-MK2.1 use?
The StratoSoar-MK2.1 is built around the ATSAMD21G18A-A, from the Microchip SAM family.
How big is the StratoSoar-MK2.1 PCB?
The StratoSoar-MK2.1 measures 42 × 87.9 mm, has 4 copper layers and is 0.8 mm thick.
How many components are on the StratoSoar-MK2.1?
104 components, from 58 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the StratoSoar-MK2.1 design files?
From the crnicholson/StratoSoar-MK2 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the StratoSoar-MK2.1 design in my own project?
The repository has no license, so all rights stay with crnicholson. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the StratoSoar-MK2.1 without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Microchip SAM firmware against it before you order a PCB.
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