EPS Scales RevG
About the EPS Scales RevG PCB
EPS Scales RevG is an open source PCB design by BroncoSpace-Lab, published on GitHub. It is a 4-layer board measuring 100 × 100 mm, with 176 components from 45 distinct parts.
Other key parts include the LT8612EUDE#PBF, INA260AIPWR, LTC6902, XT60PW-F_C428722 and TCA4307DGKR. By type, the board carries 83 resistors, 57 capacitors, 17 ICs, 9 diodes, 5 connectors and 3 inductors.
It belongs with the sensors designs in this gallery.
From the project
Hardware design files for the Spacecraft Compartmentalized Autonomous Learning and Edge Computing System (SCALES)
This is the third board of the SCALES EPS. It is based on the RevF schematic which yields the Viking 1-C Board. This board improves on the success of the 1-B board and implements some minor improvements that prevented the Peripheral and Jetson subsystem from activating correctly.
List of Changes in Viking 1-C After Production Errors in Viking 1-B
- Removed R48 - Removed R83 - The above mentioned resistors caused too low of a voltage to fully enable the En pins on the load switches, and by simply removing them we can successfully drive the load switches on using GPIO pins. - Added 3 MCP9808…
Main components on the EPS Scales RevG
EPS Scales RevG bill of materials (BOM)
176 components, 45 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | LT8612EUDE#PBF | QFN-28_L6.0-W3.0-P0.50-BL-EP | U1, U3, U13 |
| 3 | INA260AIPWR | TSSOP-16_L5.0-W4.4-P0.65-LS6.4-BL-1 | U2, U5, U16 |
| 1 | LTC6902 | MSOP-10_L3.0-W3.0-P0.50-LS5.0-BL | U7 |
| 1 | XT60PW-F_C428722 | TH_2P-XT60PW-F | U8 |
| 1 | TCA4307DGKR | VSSOP-8_L3.0-W3.0-P0.65-LS4.9-BL | U9 |
| 2 | TLV1704AQPWRQ1 TLV1704 Texas Instruments | TSSOP-14_4.4x5mm_P0.65mm | U10, U11 |
| 3 | TPS1HB08BQPWPRQ1 | HTSSOP-16_L5.0-W4.4-P0.65-LS6.4-TL-EP2.9 | U12, U15, U17 |
| 3 | MCP9808T-E/MS | MSOP-8_L3.0-W3.0-P0.65-LS4.9-BL | U19, U20, U21 |
| 1 | DF11-16DP-2DSA(08) | CONN-TH_DF11-16DP-2DSA-08 | CN1 |
| 2 | DF11-16DP-2DSA | CONN-TH_DF11-16DP-2DSA-08 | J6, J10 |
| 2 | Conn_01x04 | PinSocket_1x04_P2.54mm_Vertical | J8, J9 |
| 2 | SolderJumper_2_Open | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP3, JP4 |
| 3 | LED | LED0603-RD_RED | D4, D9, D17 |
| 4 | 1N4151WS-E3-08 1N4448WS-7-F Vishay | SOD-323_L1.8-W1.3-LS2.5-RD | D7, D10, D15, D18 |
| 2 | 150060GS75000 GREEN Wurth | LED_0603_1608Metric | D14, D16 |
| 1 | 47uH | IND-SMD_L10.7-W10.0_ETQP5MXXXX | L1 |
| 1 | 6.1u | IND-SMD_FTKB1207-6R1NT | L2 |
| 1 | 10u | IND-SMD_L8.0-W8.0 | L3 |
| 9 | 10u | C_1210_3225Metric | C1, C2, C3, C4, C5, C6, C7, C8 +1 |
| 3 | 22n | C0402 | C23, C36, C46 |
Show 25 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 220n | C0402 | C24, C35, C45 |
| 3 | 2.2u | C0402 | C25, C38, C47 |
| 3 | 10p | C0402 | C26, C39, C60 |
| 14 | 100n | C0402 | C27, C28, C29, C30, C31, C32, C40, C41 +6 |
| 6 | 100uF | CAP-SMD_L7.3-W6.1_TCN4227M025R0100 | C50, C51, C53, C63, C64, C65 |
| 6 | 47u | CAP-SMD_L7.3-W4.3-FD | C52, C56, C57, C58, C61, C62 |
| 10 | 10u | C0402 | C73, C74, C75, C76, C77, C79, C80, C81 +2 |
| 14 | 1k | R0402 | R1, R3, R28, R29, R57, R58, R73, R75 +6 |
| 13 | 15k | R0402 | R2, R41, R59, R60, R61, R72, R74, R76 +5 |
| 1 | 14k | R_0603_1608Metric | R34 |
| 1 | 17k | R_0603_1608Metric | R35 |
| 6 | 4.7k | R_0603_1608Metric | R42, R43, R44, R45, R46, R47 |
| 1 | 196k | R0402 | R55 |
| 14 | 10k | R0402 | R56, R108, R141, R142, R143, R144, R147, R148 +6 |
| 3 | 110k | R0402 | R62, R79, R93 |
| 3 | 47k | R0402 | R63, R81, R91 |
| 3 | 2k | R0402 | R64, R80, R92 |
| 1 | 240k | R0402 | R65 |
| 12 | 100k | R0402 | R66, R150, R152, R153, R155, R156, R166, R168 +4 |
| 2 | ESR18EZPF10R0 10 Rohm Semiconductor | R_1206_3216Metric | R86, R94 |
| 1 | 20.8k | R0402 | R103 |
| 1 | 5k | R0402 | R104 |
| 1 | 56.2k | R0402 | R107 |
| 4 | 3k | R0402 | R145, R146, R161, R162 |
| 2 | 4.7M | R0402 | R154, R170 |
EPS Scales RevG design files
The KiCad project lives in the BroncoSpace-Lab/scales-hardware repository on GitHub; these links point at the commit this page was built from.
EPS Scales RevG: common questions
How big is the EPS Scales RevG PCB?
The EPS Scales RevG measures 100 × 100 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the EPS Scales RevG?
176 components, from 45 distinct parts. The full bill of materials is listed on this page.
Where can I download the EPS Scales RevG design files?
From the BroncoSpace-Lab/scales-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 EPS Scales RevG design in my own project?
The repository has no license, so all rights stay with BroncoSpace-Lab. Use it as a reference, and ask the author before reusing the design.
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