1u panel
oresat·oresat-solar-hardware·1u_panel/kicad/1u_panel.kicad_pcb
About the 1u panel PCB
1u panel is an open source STM32 PCB design by oresat, published on GitHub. It is a 2-layer board measuring 83 × 100 mm, with 109 components from 47 distinct parts.
Its main chip is the STM32F091CCT6TR, from the STM32 family. Other key parts include the TCAN330GDCNT, TMP101NA/3K, LT1618EMS#TRPBF, INA226AIDGSR and TPS63060DSCR. By type, the board carries 31 test points, 28 capacitors, 25 resistors, 9 ICs, 5 diodes and 2 transistors.
It belongs with the power & battery designs in this gallery.
From the project
OreSat solar array designs and CAD
This repo contains the CAD for OreSat's solar modules. Part of OreSat's design is a module bus system that spans 1 - 3 U, so each array is its own 1U "panel". Oresat0, a 1U CubeSat, thus has 4 solar modules, and OreSat1, a 2U CubeSat, has 8. This approach has pretty severe drawbacks in terms of solar cell coverage area, but it's extremely flexible for having one design across a bunch of different designs. One nifty part of this design is that each 1u panel has its own true maximum power point tracker, with a software-defined MPPT algorithm. We're MPPT elitists - we eschew maximum power point…

Main components on the 1u panel
1u panel bill of materials (BOM)
109 components, 47 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TCAN330GDCNT Texas Instruments | SOT23-8_TI-DCN | U1 |
| 2 | TMP101NA/3K TMP101NA/3KSLOTTED Texas Instruments | DBV6-SLOT | U2, U11 |
| 1 | LT1618EMS#TRPBF LT1618EMSTRPBF Linear Technologies | MSOP-10_MS | U3 |
| 1 | INA226AIDGSR TI | DGS10 | U4 |
| 1 | STM32F091CCT6TR STM32F091CCT7 STMicroelectronics | STM32F091C | U7 |
| 1 | TPS63060DSCR | CONV_TPS63060DSCT | U10 |
| 1 | LTC4412ES6#TRPBF LTC4412 Linear Technologies | SOT23-6 | U12 |
| 1 | FLIGHMARKERNEW | FLIGHTMARKER_NEW_BOARDS | U$1 |
| 1 | DMP3050LVT-7 Diodes Inc. | SOT23-6 | Q1 |
| 1 | DMP2240UDM-7 Diodes Inc. | SOT23-6 | Q2 |
| 1 | ECS-160-10-36Q-ES-TR ECS Inc. | CRYSTAL_2.5X2 | X1 |
| 1 | MMS-104-01-[F/L]-SH | SAMTEC-MMS-104-02-X-SH | J1 |
| 1 | 687120183622 2-1734592-0 Wurth | J-TE-2-1734592-0 | J2 |
| 2 | SPECTROLAB-XTE-SF | SPECTROLAB-XTE-SF | CELL1, CELL2 |
| 1 | M55-6021242R | HARWIN-M55-60X1242R | CF1 |
| 1 | ORESAT-SOLAR-BOARD-V4-SPECTROLABS | ORESAT-SOLAR-BOARD-V4 | PCB1 |
| 31 | TEST-POINT-LARGE-SQUARE | 1X01 | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8 +23 |
| 2 | 1N4151WS | SOD323-R | D1, D3 |
| 1 | IN-S63AT5A GREEN Inolux | LED-0603 | D4 |
| 1 | NRVB130T3G NRVB130TGSOD123 OnSemi | SOD123 | D5 |
Show 27 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | IN-S63AT5A AMBER Inolux | LED-0603 | D6 |
| 1 | 1226AS-H-1R0N=P2 1u TDK | IND_1226AS-H-1R0N=P2 | L1 |
| 1 | 744042100 10u WURTH | NONSTANDARD | L2 |
| 10 | CL10B104KB85PND 100n Kemet | .0603-C-NOSILK | C1, C5, C6, C7, C8, C25, C26, C29 +2 |
| 1 | UMK107B7103KAHT 10n Taiyo | .0603-C-NOSILK | C2 |
| 7 | CL32B226KOJVPNE 22u Samsung | .0805-B-NOSILK | C3, C9, C11, C15, C16, C19, C23 |
| 3 | GRT188R61C106KE13D 10u Murata | .0603-C-NOSILK | C4, C13, C20 |
| 1 | GRT21BR61C106KE01L 10u Murata | .0805-B-NOSILK | C12 |
| 2 | EMK107BBJ475KAHT 4.7u Taiyo | .0603-C-NOSILK | C14, C18 |
| 1 | CL10B104KB85PND 100n Kemet | .0402-B-NOSILK | C21 |
| 1 | GRT188R61C106KE13D 10p Murata | .0603-C-NOSILK | C22 |
| 2 | GCM1885C2A200JA16D 20p Murata | .0603-C-NOSILK | C27, C28 |
| 1 | CRGCQ0603F470K 560k TE | .0603-C-NOSILK | R1 |
| 1 | RR0816P-104-D 100k Susumu | .0603-C-NOSILK | R2 |
| 2 | RE0603FRE074K7L 4.7k Yageo | .0603-C-NOSILK | R3, R4 |
| 4 | RNCP0603FTD10K0 100k Stackpole | .0603-C-NOSILK | R6, R7, R18, R19 |
| 1 | 1M | .0603-C-NOSILK | R9 |
| 1 | ERA-3AEB8252V 82.5k Panasonic | .0603-C-NOSILK | R10 |
| 1 | 10k | .0603-C-NOSILK | R11 |
| 1 | RN73R1JTTD1422D25 14.7k KOA | .0603-C-NOSILK | R12 |
| 1 | RNCP0603FTD10K0 NP Stackpole | .0603-C-NOSILK | R13 |
| 3 | RMCF0805ZT0R00 0 Stackpole | .0805-C-NOSILK | R14, R15, R20 |
| 1 | RK73H1JTTD2001F 2k KOA | .0603-C-NOSILK | R16 |
| 1 | RMCF0805ZT0R00 0.1 0805 Stackpole | .0805-C-NOSILK | R17 |
| 2 | CRGCQ0603F2K7 2.7k TE | .0603-C-NOSILK | R21, R23 |
| 1 | CRGCQ0603F2K7 10k TE | .0603-C-NOSILK | R22 |
| 4 | CR0603AFX-1001ELF 1k/NP Bourns | .0603-C-NOSILK | R24, R25, R26, R27 |
1u panel design files
The KiCad project lives in the oresat/oresat-solar-hardware repository on GitHub; these links point at the commit this page was built from.
1u panel: common questions
What microcontroller does the 1u panel use?
The 1u panel is built around the STM32F091CCT6TR, from the STM32 family.
How big is the 1u panel PCB?
The 1u panel measures 83 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the 1u panel?
109 components, from 47 distinct parts. The full bill of materials is listed on this page.
Where can I download the 1u panel design files?
From the oresat/oresat-solar-hardware repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the 1u panel design in my own project?
The repository has no license, so all rights stay with oresat. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the 1u panel 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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