PennyLekas/Nixie-Clockv1 is broken and required some bodge wires to work. I have not updated the schematic and PCB to correct my mistakes. It also has some deficencies in the dimming circuit resulint in a quiet, but audible whine.
Nixie v2 Processor Board is an open-source printed circuit board by PennyLekas, from the PennyLekas/Nixie-Clock repository on GitHub. It is a 2-layer board of 100 × 50 mm with 75 parts on 83 nets, routed with 685 tracks and 451 vias.
It is built around the RP2040, W25Q128JVPIQ and AP22913W6, with the DS3231MZ/V+, TPS82084SIL and ABM10-166-12.000MHZ-T3 among its other parts. Its parts include 23 capacitors, 17 resistors, 8 connectors, 6 ICs and 4 switches. It belongs with the lEDs and displays boards and the RP2040 boards of this library.
v1 is broken and required some bodge wires to work. I have not updated the schematic and PCB to correct my mistakes. It also has some deficencies in the dimming circuit resulint in a quiet, but audible whine.
v2 is in progress and will fix many issues and make the clock easier to update. It wil be using an RP2040.
Features
The goal of this is to be a program once project so the end user will never need to plug it into a computer. But if they do, the RP2040 will make firmware updates easy
| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | TestPoint | TestPoint:TestPoint_Pad_D2.0mm | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10 |
| 9 | 100n | Capacitor_SMD:C_0402_1005Metric | C5, C6, C7, C8, C9, C10, C11, C12, C13 |
| 6 | 10k | Resistor_SMD:R_0603_1608Metric | R8, R11, R13, R15, R16, R17 |
| 5 | 100n | Capacitor_SMD:C_0603_1608Metric | C16, C17, C18, C22, C23 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H2, H3, H4 |
| 3 | 1u | Capacitor_SMD:C_0603_1608Metric | C3, C4, C19 |
| 3 | Conn_01x10_Socket | Connector_PinSocket_2.54mm:PinSocket_2x05_P2.54mm_Vertical | J1, J2, J3 |
| 3 | SW_Push | Button_Switch_SMD:SW_Push_1P1T_NO_CK_KMR2 | SW1, SW2, SW4 |
| 2 | 1u | Capacitor_SMD:C_0402_1005Metric | C14, C15 |
| 2 | 2.2k | Resistor_SMD:R_0603_1608Metric | R9, R10 |
| 2 | 27.4 | Resistor_SMD:R_0402_1005Metric | R4, R5 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R6, R7 |
| 2 | 8p | Capacitor_SMD:C_0402_1005Metric | C20, C21 |
| 2 | Conn_01x03_2.54mm | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J7, J8 |
| 1 | 10u | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | 12MHz | Crystal:Crystal_SMD_Abracon_ABM10-4Pin_2.5x2.0mm | Y1 |
| 1 | 169k | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 1k | Resistor_SMD:R_0603_1608Metric | R12 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R14 |
| 1 | 22u | Capacitor_SMD:C_0603_1608Metric | C2 |
| 1 | 499k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 523k | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | AP22913 | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | AudioJack3_SwitchT | Connector_Audio:Jack_3.5mm_CUI_SJ-3524-SMT_Horizontal | J5 |
| 1 | CR1220 | Battery:BatteryHolder_LINX_BAT-HLD-012-SMT | BT1 |
| 1 | Conn_01x01_Pin | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J4 |
| 1 | DS3231MZ | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | MCP23017_ML | Package_DFN_QFN:QFN-28-1EP_6x6mm_P0.65mm_EP4.25x4.25mm | U6 |
| 1 | RP2040 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U4 |
| 1 | SW_DIP_x10 | Button_Switch_THT:SW_DIP_SPSTx10_Piano_10.8x26.96mm_W7.62mm_P2.54mm | SW3 |
| 1 | SolderJumper_3_Open | Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm_NumberLabels | JP1 |
| 1 | TPS82084SIL | Nick_Converter_DCDC:MicroSiP 1.33mm | U1 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J6 |
| 1 | W25Q128JVP | Package_SON:WSON-8-1EP_6x5mm_P1.27mm_EP3.4x4.3mm | U5 |
It measures 100 × 50 mm and has 2 copper layers, 1.65 mm thick.
75 parts, built around the RP2040, W25Q128JVPIQ, AP22913W6 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.
From the PennyLekas/Nixie-Clock repository on GitHub, at the commit this page was made from: the board is Hardware/v2 - RP2040/Processor Board/Nixie v2 Processor Board.kicad_pcb and its schematic Hardware/v1 - MEGA2560/KiCad/Nixie Clock.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask PennyLekas before reusing the design.
PennyLekas/Nixie-Clock
v1 is broken and required some bodge wires to work. I have not updated the schematic and PCB to correct my mistakes. It also has some deficencies in the dimming circuit resulint in a quiet, but audible whine.
PennyLekas/Nixie-Clock
v1 is broken and required some bodge wires to work. I have not updated the schematic and PCB to correct my mistakes. It also has some deficencies in the dimming circuit resulint in a quiet, but audible whine.
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