Obc hardware
About the Obc hardware PCB
Obc hardware is an open source PCB design by SFUSatClub, published on GitHub. It is a 2-layer board measuring 95.9 × 90.2 mm, with 123 components from 59 distinct parts.
Other key parts include the TMS570LS0714, AP7331, AP7361_3.3v, INA301 and FLASH_IS25LP016D. By type, the board carries 38 resistors, 31 capacitors, 14 connectors, 10 ICs, 5 transistors and 5 diodes.
From the project
PCB design for the initial prototype of OBC hardware, to interface with LaunchPad.
demoboardv1:** test board featuring RTC, flash memory, watchdog and SEL protection, to be tested with the TMS570LS0432 Launchpad board.
OBCprototypeA:** design for PC104 compliant OBC prototype, including onboard MCU, flash memory, SEL protection and power supplies. Includes all features of demoboard, interfaced to TMS570LS0714 MCU.
Kicad-Lib: SFUSat's common footprint and schematic symbol library.
Main components on the Obc hardware
Obc hardware bill of materials (BOM)
123 components, 59 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TMS570LS0714 | LQFP-144_20x20mm_Pitch0.5mm | U1 |
| 1 | AP7331 | SOT25 | U2 |
| 1 | AP7361_3.3v | SOT-223 | U3 |
| 1 | INA301 | VSSOP_8 | U4 |
| 3 | FLASH_IS25LP016D | SOT-8_208mil_medium | U5, U6, U7 |
| 1 | AB-RTCMC-EOA9-S3 | RTC_AB-RTCMC_EA09_S3 | U8 |
| 1 | TPS3110 | SOT_23_6 | U9 |
| 1 | FT230XQ-R | QFN-16_650P | U10 |
| 4 | DMN2075U | SOT23_DMN2075U | Q1, Q2, Q4, Q5 |
| 1 | 1v2_GOOD | SOT23_DMN2075U | Q3 |
| 1 | XTAL | SMD_XTAL | Y1 |
| 1 | PC104-8BIT | PC104-8bit | J1 |
| 1 | 3v3_IN_CONNECTOR | 2x01In_Header_v2 | P1 |
| 1 | INA_INPUT | 3x_01In_Header_v2 | P2 |
| 1 | INA_GND | 3x_01In_Header_v2 | P3 |
| 1 | INA_EN | 2x01In_Header_v2 | P4 |
| 1 | INA_OUTPUT | 2x01In_Header_v2 | P5 |
| 1 | USB_PORT | USB_MINIB_SMD | P6 |
| 1 | OSC_FUALT_INJECT | 2x01In_Header_v2 | P7 |
| 1 | RTC_SPI | 4x01In_Header_v2 | P8 |
Show 39 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | FLASH_SPI | 3x_01In_Header_v2 | P9 |
| 1 | FLASH_CS | 3x_01In_Header_v2 | P10 |
| 1 | USB_5V | 2x01In_Header_v2 | P11 |
| 1 | JTAG_20PIN | JTAG_20pin | P12 |
| 1 | WD_EN | 2x01In_Header_v2 | P13 |
| 1 | JTAG5V_IN | 2x01In_Header_v2 | JTAG5V_IN1 |
| 2 | SPST | Tact_SW_SMD_v2 | SW1, SW2 |
| 1 | Trimpot | Trimpot_Bourns_TC33 | VR1 |
| 7 | TEST_1P | Test_Point | W1, W2, W3, W4, W5, W6, W15 |
| 1 | AD1EVT1 | Test_Point | W7 |
| 1 | GIOB2 | Test_Point | W8 |
| 1 | CLKOUT | Test_Point | W9 |
| 1 | RTC_OE | Test_Point | W10 |
| 1 | RTC_INT | Test_Point | W11 |
| 1 | nERROR | Test_Point | W12 |
| 1 | WD_TEST | Test_Point | W13 |
| 1 | RESET_TEST | Test_Point | W14 |
| 2 | LED | LED_0603 | D1, D3 |
| 1 | PESD5Zx | PESD57zx | D2 |
| 1 | TX | LED_0603 | D4 |
| 1 | RX | LED_0603 | D5 |
| 1 | 1uF | C_0402 | C2 |
| 21 | 0.1µF | C_0402 | C4, C5, C6, C7, C9, C10, C11, C12 +13 |
| 1 | 100nF | C_0402 | C8 |
| 2 | 1µF | C_0402 | C21, C23 |
| 1 | 4.7µF | C_0402 | C22 |
| 2 | 33pF | C_0402 | C27, C28 |
| 2 | 10nF | C_0402 | C29, C33 |
| 1 | 470µF | Supercap_v2 | C30 |
| 1 | 7.5k | R_0402 | R1 |
| 2 | 27 | R_0402 | R2, R31 |
| 1 | 0.04 | R_2512 | R3 |
| 19 | 10k | R_0402 | R4, R5, R7, R8, R10, R11, R13, R14 +11 |
| 4 | 270 | R_0402 | R6, R9, R36, R37 |
| 3 | 0 | R_0402 | R12, R16, R20 |
| 1 | 200k | R_0402 | R22 |
| 1 | 187k | R_0402 | R23 |
| 5 | 100k | R_0402 | R24, R27, R28, R29, R30 |
| 1 | 1k | R_0402 | R38 |
Obc hardware design files
The KiCad project lives in the SFUSatClub/obc-hardware repository on GitHub; these links point at the commit this page was built from.
Obc hardware: common questions
How big is the Obc hardware PCB?
The Obc hardware measures 95.9 × 90.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Obc hardware?
123 components, from 59 distinct parts. The full bill of materials is listed on this page.
Where can I download the Obc hardware design files?
From the SFUSatClub/obc-hardware repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Obc hardware design in my own project?
The repository has no license, so all rights stay with SFUSatClub. Use it as a reference, and ask the author before reusing the design.
Earlier revisions in the repo: demoBoard_v1