2 layers50 × 66 mm
2 layers37.5 × 54 mm
Longan V2
cuspaceflight/LonganMinimal Avionics for High Altitude Ballooning
- Size
- 37.5 × 54 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 25
- Nets
- 54
- Pads
- 136
- Tracks, vias
- 202, 62
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 21 Nov 2022
- Updated
- 22 Nov 2022
Overview
Longan V2 is an open-source printed circuit board by cuspaceflight, from the cuspaceflight/Longan repository on GitHub, published under the MIT licence. It is a 2-layer board of 37.5 × 54 mm with 25 parts on 54 nets, routed with 202 tracks and 62 vias.
It is built around the MAX-M8Q-0. Its parts include 6 capacitors, 5 connectors, 3 ICs, 1 resistor and 1 switch. It belongs with the RP2040 boards of this library.
Main components
1README
README.mdLongan
Minimal Avionics for High Altitude Ballooning
Parts
25| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 0.1u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C4 |
| 2 | Conn_Coaxial | Connector_Coaxial:SMA_Amphenol_132289_EdgeMount | J1, J2 |
| 2 | GND | TestPoint:TestPoint_Pad_D2.5mm | GND, GND |
| 1 | 0.1n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C6 |
| 1 | 10 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1 |
| 1 | 10n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3 |
| 1 | 1u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C5 |
| 1 | 22u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1 |
| 1 | 27n | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L1 |
| 1 | 3v3 | TestPoint:TestPoint_Pad_D2.5mm | 3v3 |
| 1 | Ai-Thinker-Ra-01 | RF_Module:Ai-Thinker-Ra-01-LoRa | U1 |
| 1 | Bat | TestPoint:TestPoint_Pad_D2.5mm | BAT |
| 1 | Battery | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J5 |
| 1 | Conn_02x09_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x09_P2.54mm_Vertical | J3 |
| 1 | GNDA | TestPoint:TestPoint_Pad_D2.5mm | GNDA |
| 1 | GPS_RX | TestPoint:TestPoint_Pad_D2.5mm | RX |
| 1 | GPS_TX | TestPoint:TestPoint_Pad_D2.5mm | TX |
| 1 | LOGO_ICON | CUSF Silks:CUSF_Logo_Icon | G*** |
| 1 | MAX-M8Q | RF_GPS:ublox_MAX | U2 |
| 1 | Pico | MCU_RaspberryPi_and_Boards:RPi_Pico_SMD | U3 |
| 1 | Reset SW | Button_Switch_SMD:SW_Push_1P1T_NO_CK_KMR2 | SW1 |
| 1 | Serial Output | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J6 |
Questions
How big is the Longan V2 PCB?
It measures 37.5 × 54 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Longan V2 use?
25 parts, built around the MAX-M8Q-0. 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 Longan V2 KiCad files?
From the cuspaceflight/Longan repository on GitHub, at the commit this page was made from: the board is Longan V2/Longan V2/Longan V2.kicad_pcb and its schematic Longan V1/Longan V1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Longan V2 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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