2 layers213 × 54 mm
Nixie board
Hardware7253/OperationUrd
A nixie tube clock inspired by the divergence meter from Steins;Gate.
99 parts1MIT
2 layers70 × 39 mm
Microcontroller
Hardware7253/OperationUrd1A nixie tube clock inspired by the divergence meter from Steins;Gate.
- Size
- 70 × 39 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 42
- Nets
- 56
- Pads
- 159
- Tracks, vias
- 261, 37
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 5 Apr 2024
- Updated
- 28 Jan 2025
Overview
Microcontroller is an open-source printed circuit board by Hardware7253, from the Hardware7253/OperationUrd repository on GitHub, published under the MIT licence. It is a 2-layer board of 70 × 39 mm with 42 parts on 56 nets, routed with 261 tracks and 37 vias.
It is built around the AMS1117-3.3 and DS3231MZ/V+. Its parts include 14 capacitors, 9 resistors, 5 connectors, 3 ICs and 2 diodes. It belongs with the lEDs and displays boards and the STM32 boards of this library.
Main components
2
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
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
README
README.mdOperation Urd
A nixie tube clock inspired by the divergence meter from Steins;Gate.
Designed in KiCad and Onshape, programmed in Rust.
Parts
42| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100n | Capacitor_SMD:C_0603_1608Metric | C2, C3, C4, C5, C11, C14 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 3 | 10k | Resistor_SMD:R_0603_1608Metric | R2, R5, R8 |
| 3 | 2k2 | Resistor_SMD:R_0603_1608Metric | R1, R6, R7 |
| 3 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J2, J3, J4 |
| 2 | 14p | Capacitor_SMD:C_0603_1608Metric | C12, C13 |
| 2 | 1u | Capacitor_SMD:C_0603_1608Metric | C7, C8 |
| 2 | 22u | Capacitor_SMD:C_0805_2012Metric | C9, C10 |
| 2 | 5k1 | Resistor_SMD:R_0603_1608Metric | R3, R4 |
| 2 | SolderJumper_2_Open | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP1, JP2 |
| 1 | 10n | Capacitor_SMD:C_0603_1608Metric | C6 |
| 1 | 10u | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | 120R | Resistor_SMD:R_0603_1608Metric | FB1 |
| 1 | 5k-500k | OptoDevice:R_LDR_5.0x4.1mm_P3mm_Vertical | R9 |
| 1 | 8Mhz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | Battery | Custom:BAT-HLD-005-THM | BT1 |
| 1 | Conn_01x10_Pin | Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical | J5 |
| 1 | DS3231MZ | Custom:SOP-8_4.93mmxP1.27mm | U3 |
| 1 | D_Zener | Diode_SMD:D_SOD-323 | D2 |
| 1 | RED | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | STM32F103CBTx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U2 |
| 1 | USB_C_Receptacle | Connector_USB:USB_C_Receptacle_GCT_USB4125-xx-x-0190_6P_TopMnt_Horizontal | J1 |
Questions
How big is the Microcontroller PCB?
It measures 70 × 39 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Microcontroller use?
42 parts, built around the AMS1117-3.3 and DS3231MZ/V+. 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 Microcontroller KiCad files?
From the Hardware7253/OperationUrd repository on GitHub, at the commit this page was made from: the board is cad/PCBs/microcontroller/microcontroller.kicad_pcb and its schematic cad/PCBs/mechanical_switch_breakout/mechanical_switch_breakout.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Microcontroller design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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