OreSat C3 Proxy Board
About the OreSat C3 Proxy Board
OreSat C3 Proxy Board is an open source PCB design by oresat, published on GitHub. It is a 4-layer board measuring 69.8 × 50 mm, with 63 components from 31 distinct parts.
Other key parts include the MCP2221AT-I/ST, INA226AIDGST, LTC4412ES6#WTRMPBF, TS5A21366DCUR and MAX892LEUA+T. By type, the board carries 23 resistors, 10 capacitors, 9 ICs, 7 diodes, 5 transistors and 5 connectors.
From the project
All things for the OreSat flatsat
The OreSat C3 Proxy Board is a debugging tool for OreSat cards. It provides a proxy for the C3 card and external power, which is all you need to work on an OreSat card. In particular, it provides:
An MCP2221 IC which connects to a PC with USB 2.0 and provides I2C, UART, and GPIO. The I2C is used to control the OreSat Power Domain (OPD) which turns the card on and off. The UART is used as a C3-UART proxy, providing a proxy for the C3's backplane UART channel. Finally the GPIO is used to assert !SHUTDOWN. An INA260 I2C current sense IC which allows the C3 proxy board to measure the power…
Main components on the OreSat C3 Proxy Board
OreSat C3 Proxy Board bill of materials (BOM)
63 components, 31 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MCP2221AT-I/ST MCP2221AxST Microchip Technology | TSSOP-14_4.4x5mm_P0.65mm | U1 |
| 1 | INA226AIDGST INA226 Texas Instruments | TSSOP-10_3x3mm_P0.5mm | U2 |
| 3 | LTC4412ES6#WTRMPBF LTC4412xS6 Analog Devices | TSOT-23-6 | U3, U4, U8 |
| 1 | TS5A21366DCUR TS5A21366 Texas Instruments | VSSOP-8_2.3x2mm_P0.5mm | U5 |
| 1 | MAX892LEUA+T Analog Devices | LINEAR-MSOP-8-AND-MAXIM-UMAX-8-21-0036 | U6 |
| 1 | MIC23050-SYML-TR MIC23050-SYML Microchip Technology | Micrel_MLF-8-1EP_2x2mm_P0.5mm_EP0.6x1.2mm_ThermalVias | U7 |
| 1 | IP4234CZ6,125 Nexperia | TSOP-6_1.65x3.05mm_P0.95mm | U9 |
| 4 | DMP2035UQ-7 Diodes Incorporated | SOT-23-3 | Q2, Q5, Q7, Q8 |
| 1 | DMN2053UQ-13 31-DMN2053UQ-13CT-ND Diodes Incorporated | SOT-23-3 | Q6 |
| 1 | TFM-120-01-L-D-RA TFM-120-X1-XXX-D-RA Samtec Inc. | J-SAMTEC-TFM-120-X1-XXX-D-RA | J1 |
| 1 | SFM-120-02-L-DH-TR SFM-120-02-L-DH Samtec Inc. | SFM-120-02-X-DH | J2 |
| 1 | USB4105-GF-A GCT | USB_C_Receptacle_Palconn_UTC16-G | J3 |
| 1 | PJ-069B-SMT-TR Same Sky (Formerly CUI Devices) | SAMESKY_PJ-069B-SMT-TR | J4 |
| 1 | 0757570441 Conn_01x04 Molex | PinHeader_1x04_P2.54mm_Vertical | J5 |
| 1 | 01550900DR Fuse Category Circuit Protection, Fuseholders For Use With/Related Products Nano 452 Mfr Littelfuse Inc. Fuse Type Cartridge Series 155 Fuseholder Type Block Packaging Tape & Reel (TR), Cut Tape (CT), Digi-Reel® Number of Circuits 1 Part Status Active Voltage 125V Mounting Type Surface Mount Termination Style Surface Mount Current Rating (Amps) 9 A Contact Finish Silver | Littelfuse 155900DR | F2 |
| 1 | PCM13SMTR C&K PCM13SMTR C&K | SW-CK-PCM13SMTR | SW1 |
| 1 | CL-SB-23B-02T SW_DP3T Nidec Components | CL-SB-23B-XX | SW2 |
| 4 | 150060GS75000 GRN Wurth | LED_0603_1608Metric | D1, D4, D5, D7 |
| 2 | 150060AS75000 AMB Wurth | LED_0603_1608Metric | D2, D3 |
| 1 | SS5150 Shenzhen Slkormicro Semicon Co., Ltd. | D_SMA | D6 |
Show 11 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MLZ2012M1R0HT000 1uH TDK | 0805-C-NOSILK | L1 |
| 3 | GRT188R71E105KE13D 1u Murata Electronics | 0603-C-NOSILK | C1, C8, C9 |
| 4 | C0603C104K5RACAUTO 100n KEMET | 0603-C-NOSILK | C2, C6, C7, C10 |
| 2 | GRT21BC71E475KE13L 4.7u Murata Electronics | 0805-C-NOSILK | C3, C4 |
| 1 | C0603C471K5RACAUTO 470p KEMET | 0603-C-NOSILK | C5 |
| 1 | WSLP1206R0100DEA 10m Vishay Dale | R_1206_3216Metric | R1 |
| 2 | RMCF0603FT5K10 5.1k Stackpole Electronics | 0603-C-NOSILK | R2, R3 |
| 1 | RMCF0603FT23K7 23.7k Stackpole | 0603-C-NOSILK | R4 |
| 7 | RMCF0603FT10K0 10k Stackpole Electronics | 0603-C-NOSILK | R5, R6, R7, R8, R11, R12, R15 |
| 4 | RMCF0603FT4K70 4.7k Stackpole Electronics | 0603-C-NOSILK | R9, R10, R13, R14 |
| 8 | RMCF0603FT100R 100 Stackpole Electronics | 0603-C-NOSILK | R16, R17, R18, R19, R20, R21, R22, R23 |
OreSat C3 Proxy Board design files
The KiCad project lives in the oresat/oresat-flatsat repository on GitHub; these links point at the commit this page was built from.
OreSat C3 Proxy Board: common questions
How big is the OreSat C3 Proxy Board?
The OreSat C3 Proxy Board measures 69.8 × 50 mm, has 4 copper layers and is 1.7702 mm thick.
How many components are on the OreSat C3 Proxy Board?
63 components, from 31 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 OreSat C3 Proxy Board design files?
From the oresat/oresat-flatsat 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 OreSat C3 Proxy Board 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.
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