4 layers200 × 100 mm
Heteromycin
hasenbanck/heteromycin
A 3D printer board using a powerfull STM32 MCU, TMC5160/TMC2160 driver and a Raspberry Pi or compatible SBC
373 parts40
4 layers65 × 56 mm
Watson assistant
ibm-dev-incubator/watson-assistantWatson Home Assistant Raspberry Pi Hat ======================================
- Size
- 65 × 56 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 68
- Nets
- 70
- Pads
- 204
- Tracks, vias
- 300, 19
- Pours
- 8
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 15 Aug 2017
- Updated
- 30 Aug 2017
Overview
Watson assistant is an open-source printed circuit board by ibm-dev-incubator, from the ibm-dev-incubator/watson-assistant repository on GitHub. It is a 4-layer board of 65 × 56 mm with 68 parts on 70 nets, routed with 300 tracks and 19 vias.
It is built around the SN74AHCT125N, CAT24C32LI- and SK6812, with the DMG2305UX and DMMT5401 among its other parts. Its parts include 15 capacitors, 11 resistors, 4 diodes, 3 ICs and 3 transistors.
Main components
5
SN74AHCT125N
DIP-14-40℃~+85℃ 1 20uA 4 4.5V~5.5V 74AHCT 8mA 8mA Tri-State Unidirectional DIP-14 Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
CAT24C32LI-
PDIP-8-40℃~+85℃ 1,000,000 cycles 1.7V~5.5V 100 Years 1MHz 2mA 3.5us 32Kbit 5ms 5uA Hardware write protection function、Noise suppression function、Built-in power-on reset (POR) I2C PDIP-8 EEPROM ROHSonsemiEEPROM
SK6812
SMD-4P,5.4x5mm-40℃~+85℃ 0.6mA 1.6mm 120° 160mcd~320mcd 1kHz 2000V 280mcd~515mcd 3.7V~5.5V 460nm~470nm 520nm~530nm 620nm~625nm 800Kbit/s 815mcd~1275mcd Built-in power-on reset circuit Semi-transparent lens SMD-4P,5.4x5mm RGB LEDs(Built-in IC) ROHSOPSCO OptoelectronicsRGB LEDs(Built-In IC)
DMG2305UX
SOT-23-55℃~+150℃ 1 P-Channel 1.7W 190pF 1V 20V 4.1A 52mΩ@4.5V 7.8nC 740pF P-Channel SOT-23 MOSFETs ROHSTECH PUBLICMOSFETs
DMMT5401
SOT-26(SC74R)-55℃~+150℃ 150V 2 PNP 200mA 200mV 300MHz 300mW 50uA 5V 60 PNP SOT-26(SC74R) Bipolar (BJT) ROHSDiodes IncorporatedBipolar (BJT)
README
README.rstWatson Home Assistant Raspberry Pi Hat
This project is a raspberry pi hat that includes an audio codec with an integrated microphone, speaker. The intent is to use this to leverage the Watson APIs to create a voice controlled home assistant. In addition to the speakers there are 4 addressable RGB LEDs that can be used for more user feedback.
Parts
68| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 0.1uF | Capacitors_SMD:C_0805_HandSoldering | C3, C4, C7, C8, C15 |
| 4 | .1uF | Capacitors_SMD:C_0805_HandSoldering | C11, C12, C13, C14 |
| 4 | 10uF | Capacitors_SMD:CP_Elec_5x4.5 | C1, C2, C5, C6 |
| 4 | 3mm_Mounting_Hole | project_footprints:NPTH_3mm_ID | H1, H2, H3, H4 |
| 4 | SK6812 | crumps:WS2812B | LED1, LED2, LED3, LED4 |
| 3 | DNP | Resistors_SMD:R_0805_HandSoldering | R7, R9, R11 |
| 2 | 22 | Resistors_SMD:R_0603_HandSoldering | R23, R24 |
| 2 | 3.9K | Resistors_SMD:R_0603_HandSoldering | R6, R8 |
| 1 | 10K | Resistors_SMD:R_0603_HandSoldering | R29 |
| 1 | 10uH | Inductors_SMD:L_0805_HandSoldering | L1 |
| 1 | 1uF | Capacitors_SMD:CP_Elec_5x4.5 | C9 |
| 1 | 220pF | Capacitors_SMD:C_0805_HandSoldering | C10 |
| 1 | 40HAT | Socket_Strips:Socket_Strip_Straight_2x20 | J3 |
| 1 | 47k | Resistors_SMD:R_0603_HandSoldering | R3 |
| 1 | 680 | Resistors_SMD:R_0603_HandSoldering | R2 |
| 1 | CAT24C32 | Housings_SOIC:SOIC-8_3.9x4.9mm_Pitch1.27mm | U2 |
| 1 | CONN_01X02 | Pin_Headers:Pin_Header_Straight_1x02 | J9 |
| 1 | CONN_02X02 | Pin_Headers:Pin_Header_Straight_2x02 | J6 |
| 1 | DMG2305UX | TO_SOT_Packages_SMD:SOT-23 | Q1 |
| 1 | DMMT5401 | TO_SOT_Packages_SMD:SOT-23-6 | Q2 |
| 1 | ELECTRET | adafruit:9.7ELECTRET | Q3 |
| 1 | R2 | Resistors_SMD:R_0603_HandSoldering | R1 |
| 1 | SN74AHCT125 | Housings_DIP:DIP-14_W7.62mm_LongPads | U3 |
| 1 | Speaker | Connectors_Terminal_Blocks:TerminalBlock_Pheonix_PT-3.5mm_2pol | LS1 |
| 1 | WM8731 | Housings_SSOP:SSOP-28_5.3x10.2mm_Pitch0.65mm | U1 |
The 45 most common of 68 parts.
Questions
How big is the Watson assistant PCB?
It measures 65 × 56 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Watson assistant use?
68 parts, built around the SN74AHCT125N, CAT24C32LI-, SK6812 and DMG2305UX. 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 Watson assistant KiCad files?
From the ibm-dev-incubator/watson-assistant repository on GitHub, at the commit this page was made from: the board is watson-assistant.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Watson assistant design in my own project?
Its repository states no licence, so its author keeps all rights: ask ibm-dev-incubator before reusing the design.
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