

STEP Monorepo
- Size
- 12 × 20 mm
- Copper layers
- 4
- Thickness
- 0.8 mm
- Parts
- 39
- Nets
- 55
- Pads
- 150
- Tracks, vias
- 302, 92
- Pours
- 12
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 27 Feb 2022
- Updated
- 4 May 2023
Overview
Ring is an open-source printed circuit board by OlinSTEP, from the OlinSTEP/step-devices repository on GitHub. It is a 4-layer board of 12 × 20 mm with 39 parts on 55 nets, routed with 302 tracks and 92 vias.
It is built around the MLPF-WB55-01E3, TPS62840DLCR and ANT016008LCS2442MA2, with the AOCA32116E and NX1612SA-32.000MHZ-CHP-CIS-3 among its other parts. Its parts include 11 capacitors, 5 resistors, 5 ICs, 1 diode and 1 transistor. It belongs with the STM32 boards of this library.
Main components
5MLPF-WB55-01E3
SMD-6P,1.6x1mm-40℃~+105℃ 1.1dB 2.4GHz~2.5GHz 50Ω Low Pass SMD-6P,1.6x1mm RF Filters ROHSSTMicroelectronicsRF FiltersTPS62840DLCR
VSON-8(1.5x2)-40℃~+125℃@(TJ) 1 1.8MHz 1.8V~3.3V 1.8V~6.5V 60nA 750mA Adjustable Buck Built-in Overcurrent Protection、Light load efficient mode、Output discharge、Cycle-by-cycle current limiting Step-down type Yes VSON-8(1.5x2) DC-DC Converters ROHSTexas InstrumentsDC-DC ConvertersANT016008LCS2442MA2
SMD-6P,1.6x0.8mm-40℃~+85℃ 0.4mm 0.8mm 1.6mm 2.442GHz 2.5dBi 3 50Ω 800mW 84MHz SMD-6P,1.6x0.8mm Antennas ROHSTDKAntennasAOCA32116E
AlphaDFN-4(1.2x1.2)-55℃~+150℃ 1.3V 1.7W 2 N-Channel 20V 36mΩ@4.5V 5.5nC@4.5V 6A Common Drain AlphaDFN-4(1.2x1.2) MOSFETs ROHSAlpha & Omega SemiconductorMOSFETsNX1612SA-32.000MHZ-CHP-CIS-3
SMD1612-4P-40℃~+85℃ 100Ω 32MHz 6pF ±10ppm ±20ppm SMD1612-4P Crystals ROHSNDKCrystals
README
README.mdWelcome to the STEP Hardware Repository
We plan to focus on designing a wearable that helps people communicate with “smart” technology in an unobtrusive, private, and efficient manner. We want our system to support more natural interactions with smart technologies.
In this repository you'll find all of the hardware projects we've been working on.
Special thanks to...
- The STEP teaching team (Dr. Alessandra Ferzoco, Dr. Caitrin Lynch, Dr. Sam Michalka, Dr. Paul Ruvolo) for doing a phenomenal job desiging and leading the class
- Olin College of Engineering for providing us with space and resources
- Olin Electric Motorsports for inspiring a lot of our repository infrastructure, documentation, and workflow (check out their respoitory by clicking here)
Parts
39| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | Test_Point_SMD | TestPoint:TestPoint_Pad_1.0x1.0mm | TP1, TP2, TP3, TP4, TP5, TP6, TP9, TP10, TP11, TP12, TP13 |
| 6 | C_100nF | Capacitor_SMD:C_0402_1005Metric | C1, C5, C6, C10, C11, C13 |
| 2 | Test_Point_SMD | TestPoint:TestPoint_Pad_1.5x1.5mm | TP7, TP8 |
| 1 | ANT016008LCS2442MA2 | step-footprints:ANT016008LCS2442MA2 | U3 |
| 1 | AOCA32116E | step-footprints:AOCA32116E | Q1 |
| 1 | BQ297xy | Package_SON:WSON-6_1.5x1.5mm_P0.5mm | U4 |
| 1 | C_0.1uF | Capacitor_SMD:C_0402_1005Metric | C12 |
| 1 | C_100nF | Capacitor_SMD:C_0201_0603Metric | C2 |
| 1 | C_100pF | Capacitor_SMD:C_0201_0603Metric | C7 |
| 1 | C_10uF | Capacitor_SMD:C_0402_1005Metric | C4 |
| 1 | C_4.7uF | Capacitor_SMD:C_0402_1005Metric | C3 |
| 1 | LED_Amber | LED_SMD:LED_0402_1005Metric | D1 |
| 1 | LSM6DSO32TR | step-footprints:LSM6DSO32TR | U2 |
| 1 | L_2.2uH | Inductor_SMD:L_0805_2012Metric_Pad1.05x1.20mm_HandSolder | L3 |
| 1 | MLPF-WB55-01E3 | step-footprints:MLPF-WB55-01E3 | AE1 |
| 1 | NX1612SA-32.000MHZ-CHP-CIS-3 | step-footprints:OSCSC105P160X120X35-4N | Y1 |
| 1 | R_100K | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | R_1K | Resistor_SMD:R_0402_1005Metric | R5 |
| 1 | R_2.2K | Resistor_SMD:R_0402_1005Metric | R2 |
| 1 | R_200K | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | R_330 | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | STM32WB55CEU6TR | step-footprints:QFN50P700X700X60-49N | U1 |
| 1 | TPS62840DLCR | step-footprints:TPS62840DLCR | U5 |
Questions
How big is the Ring PCB?
It measures 12 × 20 mm and has 4 copper layers, 0.8 mm thick.
What parts does the Ring use?
39 parts, built around the MLPF-WB55-01E3, TPS62840DLCR, ANT016008LCS2442MA2 and AOCA32116E. 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 Ring KiCad files?
From the OlinSTEP/step-devices repository on GitHub, at the commit this page was made from: the board is projects/ring/ring.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ring design in my own project?
Its repository states no licence, so its author keeps all rights: ask OlinSTEP before reusing the design.
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