Shio Rev A
About the Shio Rev A PCB
Shio Rev A is an open source Nordic nRF PCB design by uw-x, published on GitHub under the CERN-OHL-W-2.0 license. It is a 2-layer board measuring 50.2 × 24.2 mm, with 67 components from 42 distinct parts.
Its main chip is the NRF52840-CKAA-R7, from the Nordic nRF family. Other key parts include the LM66100DCKT, MAX38640AENT+, BMA400, W25N01GVZEIG_TR and SIP32431DR3. By type, the board carries 23 capacitors, 20 resistors, 8 inductors, 7 ICs, 2 crystals and 2 diodes.
It belongs with the iot & wireless designs in this gallery.
From the project
- KiCAD design files are in shiofpc folder. - Fabrication output (Gerbers) are in shiofpc/shiorevafabv4. The suggested stack up is in shiofpc/shiostackup.xlsx. Suggested BOM is in shiofpc/shioBOMrevafab23.csv. - Schematic PDF can be found at shiofpc/shiofpc_revA.pdf
- KiCAD design files are in shiofpc folder. - Fabrication output (Gerbers) are in shiofpc/shiorevafabv4. The suggested stack up is in shiofpc/shiostackup.xlsx. Suggested BOM is in shiofpc/shioBOMrevafab23.csv. - Schematic PDF can be found at shiofpc/shiofpc_revA.pdf
Errata: The design contains some errors that can be addressed in future revisions. The errors do not affect function, but do affect robustness. 1. Add 0.1uF decoupling capacitor to PDM mic (ICS-41350) Vcc. 2. Extend battery holder terminal pads further under solder mask to prevent pad tearout. 3. Consider using FR4 stiffener or…
Main components on the Shio Rev A
Shio Rev A bill of materials (BOM)
67 components, 42 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | LM66100DCKT Texas Instruments | LM66100DCKT | U1, U4 |
| 1 | MAX38640AENT+ | MAX38640AENT&plus_ | U2 |
| 1 | NRF52840-CKAA-R7 Nordic | BGA94N35P10X10_360X354X51N | U3 |
| 1 | BMA400 Bosch Sensortec | XDCR_BMA400 | U5 |
| 1 | W25N01GVZEIG_TR Winbond Electronics | SON127P800X600X80-9N | U6 |
| 1 | SIP32431DR3 SiP32431DR3 Vishay Siliconix | SOT-363_SC-70-6 | U8 |
| 1 | NX3215SA-32.768K-STD-MUA-9 32.768kHz NDK America, Inc. | Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 1 | 32MHZ 32MHz Jauch Quartz | Crystal_SMD_2016-4Pin_2.0x1.6mm | Y3 |
| 1 | 10118193-0001LF Amphenol ICC (FCI) | USB_Micro_B_Female_10118193-0001LF | J1 |
| 1 | 2450AT18A100E Johanson Technology Inc. | Antenna_1.6x3.2mm_2450AT18A100E | ANT1 |
| 1 | BAT-HLD-001-THM Linx Technologies Inc. | LINX_BAT-HLD-001-THM | BT1 |
| 1 | ICS-41350 TDK-InvenSense | MIC_ICS-41350 | MK1 |
| 1 | B3U-1000P Omron Electronics Inc-EMC Div | Switch_Tactile_SMD_B3U-1000P | S1 |
| 1 | 350-4447-1 LED1 RED | LED_0402_1005Metric | D1 |
| 1 | 350-4448-1 LED2 ORG | LED_0402_1005Metric | D2 |
| 1 | 7447860022 2.2uH Würth Elektronik | L_0603_1608Metric | L1 |
| 1 | LQP03TN15NJ02D 15nH Murata Electronics | L_0201_0603Metric | L2 |
| 1 | MLZ1608N100LT000 10uH TDK Corporation | L_0603_1608Metric | L3 |
| 2 | RC0201JR-070RL 0R Yageo | L_0201_0603Metric | L4, L6 |
| 1 | LQP03TN2N7BZ2D 2.7nH Murata Electronics | L_0201_0603Metric | L5 |
Show 22 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | L-07C2N7SV6T NO_STUFF Johanson Technology Inc. | L_0201_0603Metric | L7 |
| 1 | L-07C3N9SV6T 3.9nH Johanson Technology Inc. | L_0201_0603Metric | L8 |
| 2 | GRM155R70J105KA12J 1uF Murata Electronics | C_0402_1005Metric | C1, C12 |
| 1 | CL03A473KQ3NNNC 47nF Samsung Electro-Mechanics | C_0201_0603Metric | C2 |
| 2 | CL05A475KP5NRNC 4.7uF Samsung Electro-Mechanics | C_0402_1005Metric | C3, C7 |
| 1 | CL05A226MQ5N6J8 22uF Samsung Electro-Mechanics | C_0402_1005Metric | C4 |
| 3 | CL05A105KQ5NNNC 1uF Samsung Electro-Mechanics | C_0402_1005Metric | C5, C11, C17 |
| 1 | CL03A104KQ3NNNC 100nF Samsung Electro-Mechanics | C_0201_0603Metric | C6 |
| 1 | C1005X6S0G475M050BC 4.7uF TDK Corporation | C_0402_1005Metric | C8 |
| 1 | CL05A106MP5NUNC 10uF Samsung Electro-Mechanics | C_0402_1005Metric | C9 |
| 1 | GRM0335C1E821JA01D 820pF Murata Electronics | C_0201_0603Metric | C10 |
| 3 | GRM033C71C104KE14D 100nF Murata Electronics | C_0201_0603Metric | C13, C14, C15 |
| 1 | 250R05L0R5BV4T 0.5pF Johanson Technology Inc. | C_0201_0603Metric | C16 |
| 4 | GRM0335C1E120GA01D 12pF Murata Electronics | C_0201_0603Metric | C18, C19, C20, C21 |
| 2 | 100NF 100nF | C_0201_0603Metric | C22, C23 |
| 2 | NO_STUFF | R_0201_0603Metric | R1, R4 |
| 9 | RC0201JR-070RL 0R Yageo | R_0201_0603Metric | R2, R5, R19, R20, R21, R22, R23, R25 +1 |
| 1 | 768K 768k | R_0201_0603Metric | R3 |
| 2 | RC0402FR-070RL 0R Yageo | R_0402_1005Metric | R6, R7 |
| 2 | RC0201JR-07220RL 220R Yageo | R_0201_0603Metric | R8, R9 |
| 3 | NO_STUFF | R_0402_1005Metric | R10, R11, R28 |
| 1 | RC0402FR-070RL NO_STUFF Yageo | R_0402_1005Metric | R30 |
Shio Rev A design files
The KiCad project lives in the uw-x/clearbuds-hw repository on GitHub; these links point at the commit this page was built from.
Shio Rev A: common questions
What microcontroller does the Shio Rev A use?
The Shio Rev A is built around the NRF52840-CKAA-R7, from the Nordic nRF family.
How big is the Shio Rev A PCB?
The Shio Rev A measures 50.2 × 24.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Shio Rev A?
67 components, from 42 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 Shio Rev A design files?
From the uw-x/clearbuds-hw repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Shio Rev A design in my own project?
Yes, under the terms of its CERN-OHL-W-2.0 license, which uw-x chose for the repository.
Can I test firmware for the Shio Rev A without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Nordic nRF firmware against it before you order a PCB.
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