2 layers156.5 × 67.5 mm
NixieScanDisplay
profdc9/NixieClock
A Nixie clock that uses IN-14 tubes and very generic components that can be easily sourced.
106 parts10
2 layers179 × 102 mm
04/09/26 Changed Production files to the Multiplexed version, to reduce costs and make tracing much easier
- Size
- 179 × 102 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 97
- Nets
- 119
- Pads
- 538
- Tracks, vias
- 744, 10
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 2 Sep 2026
- Updated
- 4 Sep 2026
Overview
Idkmna is an open-source printed circuit board by LightestDark, from the LightestDark/Divergence_Meter_Final repository on GitHub. It is a 2-layer board of 179 × 102 mm with 97 parts on 119 nets, routed with 744 tracks and 10 vias.
It is built around the MPSA42, MPSA92 and UF4004. Its parts include 26 resistors, 18 transistors, 13 diodes, 10 connectors and 2 capacitors. It belongs with the RP2040 boards of this library.
Main components
3
MPSA42
TO-921 NPN 1.5W 100nA 300V 40 500mA 500mV 50MHz 6V NPN TO-92 Bipolar (BJT) ROHSFoshan Blue Rocket ElecBipolar (BJT)MPSA92
TO-921 PNP 1.5W 250nA 300V 40 500mA 500mV 50MHz 5V PNP TO-92 Bipolar (BJT) ROHSFoshan Blue Rocket ElecBipolar (BJT)
UF4004
DO-41-55℃~+175℃ 10uA@400V 1A 1V@1A 30A 400V Independent DO-41 Diodes - General Purpose ROHSLGEDiodes - General Purpose
README
README.mdDivergence_Meter_Final
04/09/26 Changed Production files to the Multiplexed version, to reduce costs and make tracing much easier
Parts
97| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | D | Diode_THT:D_DO-41_SOD81_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D12 |
| 10 | 4.7k | Resistor_SMD:R_2512_6332Metric | R2, R4, R7, R10, R13, R16, R19, R22, R25, R26 |
| 10 | MPSA42 | Package_TO_SOT_THT:TO-92_Inline | Q1, Q3, Q5, Q7, Q9, Q11, Q13, Q15, Q17, Q18 |
| 8 | 10k | Resistor_SMD:R_2512_6332Metric | R3, R6, R9, R12, R15, R18, R21, R24 |
| 8 | 300k | Resistor_SMD:R_2512_6332Metric | R1, R5, R8, R11, R14, R17, R20, R23 |
| 8 | 4.7K | Resistor_SMD:R_2512_6332Metric | RA1, RA2, RA3, RA4, RA5, RA6, RA7, RA8 |
| 8 | IN-14 | Nixie_Footprints:nixies-us-IN-14 | N1, N2, N3, N4, N5, N6, N7, N8 |
| 8 | MPSA92 | Package_TO_SOT_THT:TO-92_Inline | Q2, Q4, Q6, Q8, Q10, Q12, Q14, Q16 |
| 2 | Anode_to_Pico | Connector_JST:JST_XH_B8B-XH-A_1x08_P2.50mm_Vertical | J2, J3 |
| 2 | BIT_TO_PICO | Connector_JST:JST_XH_B6B-XH-A_1x06_P2.50mm_Vertical | J1, J4 |
| 1 | 100n | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C2 |
| 1 | 200uF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C1 |
| 1 | 5V_Line | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | J17 |
| 1 | 5V_Line | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J12 |
| 1 | DSS3231_PINOUT | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J5 |
| 1 | D_Zener | Diode_THT:D_DO-201_P12.70mm_Horizontal | D11 |
| 1 | GND | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J18 |
| 1 | High_Voltage_Terminal | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J11 |
| 1 | K155NA1 | Package_DIP:DIP-16_W7.62mm_Socket | U1 |
| 1 | RaspberryPi_Pico | Module:RaspberryPi_Pico_Common_Unspecified | A1 |
| 1 | UF4004 | Diode_THT:D_DO-41_SOD81_P7.62mm_Horizontal | D13 |
| 1 | USB_C_SUPPLY | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J16 |
The 87 most common of 97 parts.
Questions
How big is the Idkmna PCB?
It measures 179 × 102 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Idkmna use?
97 parts, built around the MPSA42, MPSA92 and UF4004. 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 Idkmna KiCad files?
From the LightestDark/Divergence_Meter_Final repository on GitHub, at the commit this page was made from: the board is PROD_FILES/idkmna/idkmna.kicad_pcb and its schematic PROD_FILES/idkmna/idkmna.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Idkmna design in my own project?
Its repository states no licence, so its author keeps all rights: ask LightestDark before reusing the design.
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