4 layers60 × 79 mm
Speaking clock smd
lhm0/talking_clock
A talking clock for visually impaired users. ESP32 controlled, fully offline, long battery life.
89 parts1
2 layers180 × 60 mm
Zeub
crides/zeubA pixel clock and IoT hub
- Size
- 180 × 60 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 406
- Nets
- 196
- Pads
- 1,343
- Tracks, vias
- 3,228, 742
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 28 Mar 2022
- Updated
- 6 Apr 2023
Overview
Zeub is an open-source printed circuit board by crides, from the crides/zeub repository on GitHub. It is a 2-layer board of 180 × 60 mm with 406 parts on 196 nets, routed with 3,228 tracks and 742 vias.
It is built around the W25Q128JVSIQ, DS3231MZ/V+ and LTC4054ES5-4.2#PBF, with the SRV05-4 and AO3400A among its other parts. Its parts include 324 diodes, 23 resistors, 20 capacitors, 12 ICs and 7 connectors. It belongs with the home automation and IoT and lEDs and displays boards of this library.
Main components
5
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
DS3231MZ/V+
SOIC-8-40℃~+85℃ 2.3V~5.5V Built-in I2C Temperature compensation、Backup power management and battery charging、Alarm function、Locking and tamper-proof、Periodic interrupt output SOIC-8 Real Time Clocks ROHSMaxim Integrated (Analog Devices)Real Time Clocks
LTC4054ES5-4.2#PBF
SOT-23-5-40℃~+85℃ 1 200uA 4.25V~6.5V 4.2V 800mA Charging IC Lithium Battery Not supported Not supported SOT-23-5 Battery Management ROHSAnalog DevicesBattery Management
SRV05-4
SOT-23-6L-55℃~+150℃ 15V 1pF 4A 5V 5uA 6V 80W ESD Four channels IEC 61000-4-2、IEC 61000-4-5 Unidirectional SOT-23-6L ESD and Surge Protection (TVS/ESD) ROHShongjiachengESD And Surge Protection (TVS/ESD)
AO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
README
README.mdZeub
zeub is meant to be a pixel clock and a IoT hub. The name comes from a smooshed version of zeit (German for time) and hub.
It currently has:
- a 8x8 RGB LED matrix and a 32x8 white LED matrix
- 2 2-channel LED strip controllers (for controlling LED strips with warm and cool white lights in my room)
- a 128x64 OLED screen
- a TMP117 precision temperature sensor
- 2 front facing speakers, using 2 MAX98357 DACs
- a DS3212 battery backed RTC
- a EVQWGD001 rotary encoder, and a 5-way joystick
- a nRF52840 microcontroller, which supports USB, BLE and 802.15.4 (ZigBee etc.) protocols
Version 2 assembled displaying a clock icon and time (the right side is green because uh.. I messed up the PCBA parts assignment): 
The current firmware fetches the current time (once; supports connection at 2 times for drift correction) from a CTS (Current Time Service) from a BLE connection. This is currently done using my phone through the nRF Connect app. The time is then displayed on both the LED matrix (along with a clock icon), and the OLED along with the date and current temperature. It also sets the brightness of one LED strip using a preconfigured (but can be reconfigured through BLE) schedule. The other LED strip (which is actually my desk light) is controlled by the scroll wheel. It also streams audio from the USB to the speakers, for testing of the audio interface.
The hub part of the project still doesn't really exist yet, as I haven't had time to get to it.
Version 1 has basically the same features, but also included 2 microphones for testing. However the LED matrix did not work properly as I used 2 LED matrix controllers together in the same matrix.
The LED strips were also connected through a TRRS cable but without an actual connector, as I flipped the control polarity of the LED strips (they are common anode instead of common cathode).
Case iterations for v1 (the cone in the back is for better airflow to the temperature sensor, for more accurate reading of the environment):
Parts
406| Qty | Value | Footprint | References |
|---|---|---|---|
| 256 | white | Diode_SMD:D_0603_1608Metric | D1, D10, D11, D100, D101, D102, D103, D104, D105, D106, D107, D108, D109, D110, D111, D112 +240 |
| 64 | LED_BGRA | LED_SMD:LED_ASMB-KTF0-0A306 | D257, D258, D259, D260, D261, D262, D263, D264, D265, D266, D267, D268, D269, D270, D271, D272 +48 |
| 10 | 100k | Resistor_SMD:R_0603_1608Metric | R5, R6, R7, R8, R17, R18, R22, R73, R74, R75 |
| 8 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C3, C5, C6, C8, C10, C13, C14, C20 |
| 8 | 1uF | Capacitor_SMD:C_0603_1608Metric | C2, C4, C7, C12, C15, C17, C18, C19 |
| 5 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4, Q5 |
| 4 | 100 | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4 |
| 3 | 10k | Resistor_SMD:R_0603_1608Metric | R12, R14, R16 |
| 3 | AudioJack4 | Connector_Audio:Jack_3.5mm_PJ320D_Horizontal | J2, J5, J6 |
| 3 | D_Schottky | Diode_SMD:D_SOD-123 | D321, D322, D323 |
| 2 | 10uF | Capacitor_SMD:C_0603_1608Metric | C9, C11 |
| 2 | 2.2k | Resistor_SMD:R_0603_1608Metric | R76, R77 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R9, R10 |
| 2 | IS31FL3741 | ic:QFN-60-1EP_7x7mm_P0.4mm_EP5.4x5.4mm_ThermalVias | U1, U2 |
| 2 | MAX98357A | Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.45x1.45mm | U14, U15 |
| 2 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP3, JP4 |
| 2 | SolderJumper_3_Open | Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1, JP2 |
| 2 | Speaker | misc:CMS1609 | LS1, LS2 |
| 1 | 1k | Resistor_SMD:R_0603_1608Metric | R11 |
| 1 | 2.2uF | Capacitor_SMD:C_0603_1608Metric | C16 |
| 1 | 390k | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | Barrel_Jack_Switch | Connector_BarrelJack:BarrelJack_CUI_PJ-102AH_Horizontal | J4 |
| 1 | Battery_Cell | Connector_JST:JST_PH_S2B-PH-SM4-TB_1x02-1MP_P2.00mm_Horizontal | BT1 |
| 1 | DS3231MZ | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | LED | Diode_SMD:D_0805_2012Metric | D324 |
| 1 | LTC4054ES5-4.2 | Package_TO_SOT_SMD:TSOT-23-5 | U10 |
| 1 | Micro_SD_Card_Det | misc:molex-503182-1852 | J7 |
| 1 | OLED-128O064D | Display:OLED-128O064D | DS1 |
| 1 | RotaryEncoder_Switch | switch:EVQWGD001 | SW2 |
| 1 | SKRHA | switch:SKRHA-boss | SW1 |
| 1 | SRV05-4 | Package_TO_SOT_SMD:SOT-23-6 | U9 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_B3U-1000P | SW3 |
| 1 | TLV1117-50 | Package_TO_SOT_SMD:SOT-223 | U7 |
| 1 | TMP117 | Package_SON:WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm | U11 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J3 |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.23x5.23mm_P1.27mm | U6 |
| 1 | XC6206PxxxMR | Package_TO_SOT_SMD:SOT-23-3 | U8 |
| 1 | holyiot-18010-no-underside | mcu:holyiot-18010-no-underside | U5 |
| 1 | jlink | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical_SMD | J1 |
The 402 most common of 406 parts.
Questions
How big is the Zeub PCB?
It measures 180 × 60 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Zeub use?
406 parts, built around the W25Q128JVSIQ, DS3231MZ/V+, LTC4054ES5-4.2#PBF and SRV05-4. 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 Zeub KiCad files?
From the crides/zeub repository on GitHub, at the commit this page was made from: the board is pcb/zeub.kicad_pcb and its schematic pcb/audio.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Zeub design in my own project?
Its repository states no licence, so its author keeps all rights: ask crides before reusing the design.
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