Romi unified board advanced
About the Romi unified board advanced
Romi unified board advanced is an open source Microchip SAM PCB design by WPIRoboticsEngineering, published on GitHub. It is a 4-layer board measuring 125.1 × 125.7 mm, with 91 components from 44 distinct parts.
Its main chip is the ATSAMD10D14A-M, from the Microchip SAM family. Other key parts include the MP4423H, DRV8838, 74AHC244, SPX3819M5-L-3-3 and TC7WB67CFK. By type, the board carries 28 resistors, 20 capacitors, 17 connectors, 11 ICs, 6 diodes and 4 test points.
Main components on the Romi unified board advanced
Romi unified board advanced bill of materials (BOM)
91 components, 44 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MP4423H "Monolithic Power Systems Inc." | DFN-8-1EP_3x3mm_P0.65mm_EP1.7x2.05mm | U1 |
| 2 | DRV8838 "Texas Instruments" | WSON-8-1EP_2x2mm_P0.5mm_EP0.9x1.6mm | U2, U3 |
| 1 | ATSAMD10D14A-M "Vishay Semiconductor Opto Division" | QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm | U4 |
| 2 | 74AHC244 "STMicroelectronics" | TSSOP-20_4.4x6.5mm_P0.65mm | U5, U8 |
| 1 | SPX3819M5-L-3-3 | SOT-23-5 | U6 |
| 2 | TC7WB67CFK | US8 | U7, U10 |
| 1 | LSM6DS3 | LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y | U9 |
| 1 | SPX3819M5-L | SOT-23-5 | U11 |
| 2 | SiS415DNT "Vishay Siliconix" | Vishay_PowerPAK_1212-8_Single | Q1, Q2 |
| 1 | ServoAnalog "Adam Tech" | PinSocket_1x04_P2.54mm_Vertical | J1 |
| 1 | Conn_01x19_Female "Sullins Connector Solutions" | PinSocket_1x19_P2.54mm_Vertical | J2 |
| 2 | LineSensor "Sullins Connector Solutions" | PinSocket_1x03_P2.54mm_Vertical | J3, J4 |
| 3 | THING "Sullins Connector Solutions" | PinSocket_1x12_P2.54mm_Vertical | J5, J14, J15 |
| 1 | Conn_02x19_Odd_Even "Sullins Connector Solutions" | PinSocket_2x19_P2.54mm_Vertical | J6 |
| 1 | Ultrasonic. "Adam Tech" | PinSocket_1x04_P2.54mm_Vertical | J7 |
| 1 | SPI "Sullins Connector Solutions" | PinSocket_1x07_P2.54mm_Vertical | J8 |
| 1 | i2c "Sullins Connector Solutions" | PinSocket_1x04_P2.54mm_Vertical | J9 |
| 1 | LIDAR_DATA "JST Sales America Inc." | JST_BM06B-GHS-TBT(LF)(SN)(N) | J10 |
| 1 | LIDAR_MOTOR "JST Sales America Inc." | JST_SM02B-PASS-TBT(LF)(SN) | J11 |
| 2 | ROMI-Encoder Samtec Inc. | PinSocket_1x06_P2.54mm_Vertical | J12, J13 |
Show 24 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SWD | PinSocket_1x04_P2.54mm_Vertical | J16 |
| 1 | Conn_01x02_Female | JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | J17 |
| 1 | SW_SPST "Nidec Copal Electronics" | CSS-1210TB | SW1 |
| 1 | SW_SPDT "Nidec Copal Electronics" | CSS-1210TB | SW2 |
| 4 | TestPoint | batterylug | TP1, TP2, TP3, TP4 |
| 1 | D_Zener "Nexperia USA Inc." | D_SOD-323F | D1 |
| 1 | PMEG4005EJ,115 "Nexperia USA Inc." | D_SOD-323F | D2 |
| 1 | D "Nexperia USA Inc." | D_SOD-323F | D3 |
| 3 | LED "Würth Elektronik" | LED_0603_1608Metric | D6, D7, D8 |
| 1 | 5.1u "Murata Electronics" | L_6.3x6.3_H3 | L1 |
| 2 | 220u "United Chemi-Con" | CP_Elec_6.3x3.9 | C1, C15 |
| 5 | 10u "Yageo" | C_0603_1608Metric | C2, C3, C10, C11, C12 |
| 7 | 0.1u "Samsung Electro-Mechanics" | C_0603_1608Metric | C4, C5, C6, C7, C8, C19, C21 |
| 2 | 1u "Samsung Electro-Mechanics" | C_0603_1608Metric | C9, C20 |
| 2 | 4.7 "Samsung Electro-Mechanics" | C_0603_1608Metric | C13, C14 |
| 2 | 10nf "United Chemi-Con" | C_0603_1608Metric | C16, C17 |
| 5 | 10k "Stackpole Electronics Inc" | R_0603_1608Metric | R1, R9, R10, R20, R21 |
| 1 | 270k "Yageo" | R_0603_1608Metric | R2 |
| 1 | 51.1k “Bourns Inc.” | R_0603_1608Metric | R3 |
| 1 | 22.1 "Yageo" | R_0603_1608Metric | R4 |
| 1 | 7.68k "Stackpole Electronics Inc" | R_0603_1608Metric | R5 |
| 1 | 41.2k "Stackpole Electronics Inc" | R_0603_1608Metric | R6 |
| 15 | 100k "Stackpole Electronics Inc" | R_0603_1608Metric | R7, R8, R11, R12, R13, R14, R15, R16 +7 |
| 3 | 330 "Stackpole Electronics Inc" | R_0603_1608Metric | R22, R23, R25 |
Romi unified board advanced design files
The KiCad project lives in the WPIRoboticsEngineering/ZenDriver repository on GitHub; these links point at the commit this page was built from.
Romi unified board advanced: common questions
What microcontroller does the Romi unified board advanced use?
The Romi unified board advanced is built around the ATSAMD10D14A-M, from the Microchip SAM family.
How big is the Romi unified board advanced?
The Romi unified board advanced measures 125.1 × 125.7 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Romi unified board advanced?
91 components, from 44 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 Romi unified board advanced design files?
From the WPIRoboticsEngineering/ZenDriver repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Romi unified board advanced design in my own project?
The repository has no license, so all rights stay with WPIRoboticsEngineering. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Romi unified board advanced without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Microchip SAM firmware against it before you order a PCB.
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