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CalPolySpaceSystems/circuitCAD
Circuit board designs and resources for Cal Poly Space Systems' avionics

Circuit board designs and resources for Cal Poly Space Systems' avionics
MicroRek is an open-source printed circuit board by CalPolySpaceSystems, from the CalPolySpaceSystems/circuitCAD repository on GitHub. It is a 2-layer board of 71.1 × 34.9 mm with 64 parts on 63 nets, routed with 588 tracks and 96 vias.
It is built around the NRF24L01P-R, FXPQ3115BVT1 and LSM9DS1, with the TPS630250RNC and ABS07-32.768KHZ-9-T among its other parts. Its parts include 29 capacitors, 9 resistors, 6 ICs, 4 diodes and 4 inductors. It belongs with the SAM D and SAM boards of this library.
This repository contains Cal Poly Space Systems' circuit board Design files. This includes designed PCBs as well as other resources. See READMEs in each directory for more information.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 0.1uF | Capacitors_SMD:C_0603_HandSoldering | C5, C6, C9, C10, C14, C20, C35 |
| 6 | 4.7k | Resistors_SMD:R_0603_HandSoldering | R2, R3, R8, R10, R11, R12 |
| 3 | 0.1u | Capacitors_SMD:C_0603_HandSoldering | C1, C2, C4 |
| 3 | 10uF | Capacitors_SMD:C_0805_HandSoldering | C8, C16, C29 |
| 2 | 10nF | Capacitors_SMD:C_0603_HandSoldering | C7, C11 |
| 2 | 10p | Capacitors_SMD:C_0603_HandSoldering | C15, C17 |
| 2 | 10pF | Capacitors_SMD:C_0603_HandSoldering | C22, C25 |
| 2 | 22uF | Capacitors_SMD:C_0805_HandSoldering | C36, C38 |
| 2 | LED | Diodes_SMD:D_0805 | D1, D4 |
| 1 | 1.5pF | Capacitors_SMD:C_0603_HandSoldering | C30 |
| 1 | 100k | Resistors_SMD:R_0603_HandSoldering | R13 |
| 1 | 12nH | Inductors_SMD:L_0603_HandSoldering | L1 |
| 1 | 15pF | Capacitors_SMD:C_0603_HandSoldering | C28 |
| 1 | 1M | Resistors_SMD:R_0603_HandSoldering | R6 |
| 1 | 1nF | Capacitors_SMD:C_0603_HandSoldering | C13 |
| 1 | 1u | Capacitors_SMD:C_0603_HandSoldering | C3 |
| 1 | 1uH | Inductors_SMD:L_Wuerth_MAPI-4030 | L4 |
| 1 | 2.2nF | Capacitors_SMD:C_0603_HandSoldering | C24 |
| 1 | 2.3nH | Inductors_SMD:L_0603_HandSoldering | L2 |
| 1 | 22k | Resistors_SMD:R_0603_HandSoldering | R1 |
| 1 | 33nF | Capacitors_SMD:C_0603_HandSoldering | C12 |
| 1 | 4.7n | Capacitors_SMD:C_0603_HandSoldering | C39 |
| 1 | 4.7pF | Capacitors_SMD:C_0603_HandSoldering | C19 |
| 1 | 7.9nH | Inductors_SMD:L_0603_HandSoldering | L3 |
| 1 | ABS07-32.768KHZ-9-T | Crystals:Crystal_SMD_EuroQuartz_EQ161-2pin_3.2x1.5mm_HandSoldering | Y2 |
| 1 | ATSAMD21G18_QFN | Housings_DFN_QFN:QFN-48-1EP_7x7mm_Pitch0.5mm | U1 |
| 1 | Conn_01x02 | Battery_Holders:Keystone_1058_1x2032-CoinCell | J3 |
| 1 | Conn_01x02 | Connectors_Amphenol:Amphenol_RF_SMA_132289 | J1 |
| 1 | Conn_01x10 | Pin_Headers:Pin_Header_Straight_2x05_Pitch2.54mm | DEBUG |
| 1 | Crystal | Crystals:Crystal_SMD_Abracon_ABM3-2pin_5.0x3.2mm_HandSoldering | Y1 |
| 1 | D_Schottky | Diodes_SMD:D_1206 | D3 |
| 1 | D_Schottky | Diodes_SMD:D_SMA_Handsoldering | D2 |
| 1 | FXPQ3115BV | Housings_LGA:LGA-8_3x5mm_Pitch1.25mm | U3 |
| 1 | LOGO | Symbols:CPSS2 | G*** |
| 1 | LOGO | Symbols:astro3 | G*** |
| 1 | LSM9DS1 | Housings_LGA:LGA-24L_3x3.5mm_Pitch0.43mm | U4 |
| 1 | SST26VF064B | Housings_SOIC:SOIJ-8_5.3x5.3mm_Pitch1.27mm | U7 |
| 1 | SW_Push | Buttons_Switches_SMD:SW_SPST_B3U-1000P | SW1 |
| 1 | TPS630250RNC | Oddities:TPS630250RNCR | U8 |
| 1 | USB_B_Micro | Connectors_USB:USB_Micro-B_Wuerth-629105150521 | USB |
| 1 | nRF24L01P | Housings_DFN_QFN:QFN-20-1EP_4x4mm_Pitch0.5mm | U5 |
The 61 most common of 64 parts.
CalPolySpaceSystems/circuitCAD
Circuit board designs and resources for Cal Poly Space Systems' avionics


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It measures 71.1 × 34.9 mm and has 2 copper layers, 1.6 mm thick.
64 parts, built around the NRF24L01P-R, FXPQ3115BVT1, LSM9DS1 and TPS630250RNC. 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.
From the CalPolySpaceSystems/circuitCAD repository on GitHub, at the commit this page was made from: the board is Projects/MiniRek/MicroRek.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask CalPolySpaceSystems before reusing the design.