2 layers68 × 100 mm
DemoBoard v1
SFUSatClub/obc-hardware
PCB design for the initial prototype of OBC hardware, to interface with LaunchPad.
56 parts10
2 layers95.9 × 90.2 mm
Demoboard v2
SFUSatClub/obc-hardware10PCB design for the initial prototype of OBC hardware, to interface with LaunchPad.
- Size
- 95.9 × 90.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 129
- Nets
- 168
- Pads
- 542
- Tracks, vias
- 2,068, 221
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 10 May 2017
- Updated
- 19 Sep 2018
Overview
Demoboard v2 is an open-source printed circuit board by SFUSatClub, from the SFUSatClub/obc-hardware repository on GitHub. It is a 2-layer board of 95.9 × 90.2 mm with 129 parts on 168 nets, routed with 2,068 tracks and 221 vias.
It is built around the FT230XQ-R, AP7331-WG and DMN2075U. Its parts include 38 resistors, 31 capacitors, 14 connectors, 10 ICs and 5 diodes.
Main components
3
FT230XQ-R
QFN-16-EP(4x4)-40℃~+85℃ 125uA 3.3V~5V 8mA USB 2.0 USB to UART QFN-16-EP(4x4) USB Converters ROHSFTDIUSB Converters
AP7331-WG
SOT-25-40℃~+85℃@(Ta) 1 300mA 300mV@(300mA) 55uA 65dB@(100Hz) 6V 800mV~5V Adjustable Over Current Protection、Short Circuit Protection、Thermal Shutdown Positive SOT-25 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDiodes IncorporatedVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
DMN2075U
SOT-23-55℃~+150℃ 1 N-channel 1.2A 1V 20V 25mΩ@4.5V 57.7pF 594.3pF 7nC@4.5V 800mW SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETs
README
README.mdOBC Hardware
demoboard_v1: test board featuring RTC, flash memory, watchdog and SEL protection, to be tested with the TMS570LS0432 Launchpad board.
OBC_prototypeA: 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.
Getting started:
Clone this repo In the obc-hardware directory, run git submodule init In the obc-hardware directory, run git submodule update
Open KiCAD, navigate to the project you're interested in. In EESchema, go to Preferences > Component Libraries
- "Add" a user defined search path, select the KiCad-Lib directory in the obc-hardware directory
- "Add" component library files and select the SFUSat.lib file in the KiCad-Lib folder
- Press ok.
Note: issues may arise when using relative paths. Select absolute paths by choosing "No" when asked if you want to use a relative path
Exit back to the KiCad home window and go to Pcbnew > Preferences > Footprint Libraries Manager > "Project Specific Libraies" tab:
- "Add Library"
- Nickname: SFUSat
- Library Path: ${KIPRJMOD}/KiCad-Lib/SFUSat.pretty
Parts
129| Qty | Value | Footprint | References |
|---|---|---|---|
| 21 | 0.1µF | SFUSat:C_0402 | C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C24, C25, C26, C31, C32 +5 |
| 18 | 10k | SFUSat:R_0402 | R4, R10, R11, R13, R14, R15, R17, R18, R19, R21, R25, R26, R32, R33, R34, R35 +2 |
| 8 | TEST_1P | SFUSat:Test_Point | W1, W1, W2, W3, W4, W5, W6, W15 |
| 5 | 100k | SFUSat:R_0402 | R24, R27, R28, R29, R30 |
| 4 | 270 | SFUSat:R_0402 | R6, R9, R36, R37 |
| 4 | DMN2075U | SFUSat:SOT23_DMN2075U | Q1, Q2, Q4, Q5 |
| 3 | 0 | SFUSat:R_0402 | R12, R16, R20 |
| 3 | FLASH_IS25LP016D | SFUSat:SOT-8_208mil_medium | U5, U6, U7 |
| 2 | 10nF | SFUSat:C_0402 | C29, C33 |
| 2 | 1µF | SFUSat:C_0402 | C21, C23 |
| 2 | 27 | SFUSat:R_0402 | R2, R31 |
| 2 | 33pF | SFUSat:C_0402 | C27, C28 |
| 2 | LED | SFUSat:LED_0603 | D1, D3 |
| 2 | SPST | SFUSat:Tact_SW_SMD_v2 | SW1, SW2 |
| 1 | 0.04 | Resistors_SMD:R_2512 | R3 |
| 1 | 100nF | SFUSat:C_0402 | C8 |
| 1 | 10K | SFUSat:R_0402 | R5 |
| 1 | 187k | SFUSat:R_0402 | R23 |
| 1 | 1k | SFUSat:R_0402 | R38 |
| 1 | 1uF | SFUSat:C_0402 | C2 |
| 1 | 1v2_GOOD | SFUSat:SOT23_DMN2075U | Q3 |
| 1 | 200k | SFUSat:R_0402 | R22 |
| 1 | 3v3_IN_CONNECTOR | SFUSat:2x01In_Header_v2 | P1 |
| 1 | 4.7µF | SFUSat:C_0402 | C22 |
| 1 | 470µF | SFUSat:Supercap_v2 | C30 |
| 1 | 7.5k | SFUSat:R_0402 | R1 |
| 1 | AB-RTCMC-EOA9-S3 | SFUSat:RTC_AB-RTCMC_EA09_S3 | U8 |
| 1 | AD1EVT1 | SFUSat:Test_Point | W7 |
| 1 | AP7331 | SFUSat:SOT25 | U2 |
| 1 | AP7361_3.3v | SFUSat:SOT-223 | U3 |
| 1 | CLKOUT | SFUSat:Test_Point | W9 |
| 1 | FLASH_CS | SFUSat:3x_01In_Header_v2 | P10 |
| 1 | FLASH_SPI | SFUSat:3x_01In_Header_v2 | P9 |
| 1 | FT230XQ-R | SFUSat:QFN-16_650P | U10 |
| 1 | GIOB2 | SFUSat:Test_Point | W8 |
| 1 | INA301 | SFUSat:VSSOP_8 | U4 |
| 1 | INA_EN | SFUSat:2x01In_Header_v2 | P4 |
| 1 | INA_GND | SFUSat:3x_01In_Header_v2 | P3 |
| 1 | INA_INPUT | SFUSat:3x_01In_Header_v2 | P2 |
| 1 | INA_OUTPUT | SFUSat:2x01In_Header_v2 | P5 |
| 1 | JTAG5V_IN | SFUSat:2x01In_Header_v2 | JTAG5V_IN1 |
| 1 | JTAG_20PIN | SFUSat:JTAG_20pin | P12 |
| 1 | LOGO | SFUSat:SFUSat_15mm_2 | G*** |
| 1 | OSC_FUALT_INJECT | SFUSat:2x01In_Header_v2 | P7 |
| 1 | PC104-8BIT | SFUSat:PC104-8bit | J1 |
| 1 | PESD5Zx | SFUSat:PESD57zx | D2 |
| 1 | RESET_TEST | SFUSat:Test_Point | W14 |
| 1 | RTC_INT | SFUSat:Test_Point | W11 |
| 1 | RTC_OE | SFUSat:Test_Point | W10 |
| 1 | RTC_SPI | SFUSat:4x01In_Header_v2 | P8 |
| 1 | RX | SFUSat:LED_0603 | D5 |
| 1 | TMS570LS0714 | Housings_QFP:LQFP-144_20x20mm_Pitch0.5mm | U1 |
| 1 | TPS3110 | SFUSat:SOT_23_6 | U9 |
| 1 | TX | SFUSat:LED_0603 | D4 |
| 1 | Trimpot | SFUSat:Trimpot_Bourns_TC33 | VR1 |
| 1 | USB_5V | SFUSat:2x01In_Header_v2 | P11 |
| 1 | USB_PORT | SFUSat:USB_MINIB_SMD | P6 |
| 1 | WD_EN | SFUSat:2x01In_Header_v2 | P13 |
| 1 | WD_TEST | SFUSat:Test_Point | W13 |
| 1 | XTAL | SFUSat:SMD_XTAL | Y1 |
| 1 | nERROR | SFUSat:Test_Point | W12 |
The 125 most common of 129 parts.
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Questions
How big is the Demoboard v2 PCB?
It measures 95.9 × 90.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Demoboard v2 use?
129 parts, built around the FT230XQ-R, AP7331-WG and DMN2075U. 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 Demoboard v2 KiCad files?
From the SFUSatClub/obc-hardware repository on GitHub, at the commit this page was made from: the board is OBC_prototypeA/demoboard_v2.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Demoboard v2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask SFUSatClub before reusing the design.