2 layers201.9 × 54.6 mm
2 layers160 × 112.4 mm
Geiger
slomkowski/octoglow8Fallout-inspired post-pocalyptic display.
- Size
- 160 × 112.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 125
- Nets
- 89
- Pads
- 363
- Tracks, vias
- 824, 16
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 5 Mar 2019
- Updated
- 23 Oct 2026
Overview
Geiger is an open-source printed circuit board by slomkowski, from the slomkowski/octoglow repository on GitHub, published under the MIT licence. It is a 2-layer board of 160 × 112.4 mm with 125 parts on 89 nets, routed with 824 tracks and 16 vias.
It is built around the LM2596S-5.0, 74HC595 and MCP1402, with the BC847, AOT8N50 and BC307 among its other parts. Its parts include 42 resistors, 39 capacitors, 9 transistors, 8 diodes and 7 connectors. It belongs with the lEDs and displays and sensors and measurement boards and the AVR (ATmega, ATtiny) and MSP430 boards of this library.
Main components
8
LM2596S-5.0
TO-263-5-40℃~+125℃@(TJ) 1 150kHz 3A 4.5V~40V 5V 5mA Buck Buck Built-in Fixed No TO-263-5 DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
74HC595
SOP-16-40℃~+85℃ 1 100ns@5V,50pF 10MHz 2V~6V 74HC 8 Serial-to-Serial or Parallel Tri-State SOP-16 Shift Registers ROHSGRShift RegistersMCP1402
UncategorisedMicrochip Technology
BC847
SOT-231 NPN 100MHz 100mA 100nA 110 200mW 45V 500mV 6V NPN SOT-23 Bipolar (BJT) ROHSShikuesBipolar (BJT)AOT8N50
TO-220-55℃~+150℃ 1 N-channel 1.042nF 192W 28nC@10V 4.5V 500V 850mΩ@10V 8A TO-220 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
BC307
TO-92-31 PNP 100mA 120 130MHz 15nA 300mV 45V 500mW PNP TO-92-3 Bipolar (BJT) ROHSonsemiBipolar (BJT)
IRF740A
TO-220AB-55℃~+150℃ 1 N-channel 1.06nF 1.49nF 10A 147W 22nC@10V 400V 4V 550mΩ@10V 7.8pF N-Channel TO-220AB MOSFETsonsemiMOSFETs
SS34
SMA(DO-214AC)-55℃~+125℃ 3A 40V 500uA@40V 550mV@3A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
README
README.mdOctoglow VFD - Fallout-inspired post-apocalyptic display
Design files of Octoglow, the post-apocalyptic desktop display device. Detailed article published on my website.
(C) Michał Słomkowski
Parts
125| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 100n | Capacitors_SMD:C_1206_HandSoldering | C3, C4, C7, C12, C16, C18, C23, C26, C29, C30, C31, C32, C36, C37 |
| 5 | 470k | Resistors_SMD:R_1206_HandSoldering | R9, R11, R13, R14, R20 |
| 4 | 10k | Resistors_SMD:R_1206_HandSoldering | R3, R29, R32, R36 |
| 4 | 38k | Resistors_SMD:R_1206_HandSoldering | R18, R27, R37, R38 |
| 3 | 180k | Resistors_SMD:R_0805_HandSoldering | R21, R22, R23 |
| 3 | 47n | Capacitors_ThroughHole:C_Disc_D5.0mm_W2.5mm_P5.00mm | C1, C15, C27 |
| 3 | 4k7 | Resistors_SMD:R_1206_HandSoldering | R10, R24, R35 |
| 3 | Conn_01x02 | Terminal_Blocks:TerminalBlock_Pheonix_MKDS1.5-2pol | J1, J2, J5 |
| 2 | 1000u | Capacitors_ThroughHole:CP_Radial_D16.0mm_P7.50mm | C5, C6 |
| 2 | 1M6 | Resistors_ThroughHole:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R12, R19 |
| 2 | 1k | Resistors_ThroughHole:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R7, R16 |
| 2 | 220u | Capacitors_ThroughHole:CP_Radial_D13.0mm_P5.00mm | C13, C14 |
| 2 | 33p | Capacitors_ThroughHole:C_Disc_D5.0mm_W2.5mm_P5.00mm | C20, C21 |
| 2 | 3n3 | Capacitors_SMD:C_1206_HandSoldering | C17, C33 |
| 2 | 4u7 | Capacitors_Tantalum_SMD:CP_Tantalum_Case-D_EIA-7343-31_Hand | C9, C39 |
| 2 | BC847 | TO_SOT_Packages_SMD:SOT-23 | Q8, Q9 |
| 2 | Conn_02x05_Odd_Even | Pin_Headers:Pin_Header_Straight_2x05_Pitch2.54mm | J6, J7 |
| 2 | D | Diodes_ThroughHole:D_DO-41_SOD81_P12.70mm_Horizontal | D6, D8 |
| 2 | D | Diodes_SMD:D_SMB | D2, D3 |
| 2 | D_Zener | Diodes_ThroughHole:D_DO-41_SOD81_P2.54mm_Vertical_AnodeUp | D1, D4 |
| 1 | 10 | Resistors_ThroughHole:R_Axial_DIN0617_L17.0mm_D6.0mm_P30.48mm_Horizontal | R8 |
| 1 | 1000u | Capacitors_ThroughHole:CP_Radial_D8.0mm_P3.50mm | C28 |
| 1 | 100k | Potentiometers:Potentiometer_Trimmer_Bourns_3006P | RV1 |
| 1 | 10k | Resistors_ThroughHole:R_Axial_DIN0309_L9.0mm_D3.2mm_P15.24mm_Horizontal | R26 |
| 1 | 10k | Resistors_ThroughHole:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R28 |
| 1 | 10n | Capacitors_ThroughHole:C_Disc_D5.0mm_W2.5mm_P5.00mm | C19 |
| 1 | 10u | Capacitors_ThroughHole:C_Rect_L33.0mm_W13.0mm_P27.50mm_MKS4 | C11 |
| 1 | 150 | Resistors_ThroughHole:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R31 |
| 1 | 150p | Capacitors_ThroughHole:C_Disc_D5.0mm_W2.5mm_P5.00mm | C22 |
| 1 | 180 | Resistors_ThroughHole:R_Axial_DIN0309_L9.0mm_D3.2mm_P15.24mm_Horizontal | R42 |
| 1 | 180p | Capacitors_ThroughHole:C_Rect_L9.0mm_W3.2mm_P7.50mm_MKT | C35 |
| 1 | 1n | Capacitors_SMD:C_0805_HandSoldering | C10 |
| 1 | 22 | Resistors_ThroughHole:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R41 |
| 1 | 22k | Resistors_ThroughHole:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R34 |
| 1 | 22k | Resistors_SMD:R_1206_HandSoldering | R33 |
| 1 | 22n | Capacitors_ThroughHole:C_Disc_D5.0mm_W2.5mm_P5.00mm | C25 |
| 1 | 22u | Capacitors_Tantalum_SMD:CP_Tantalum_Case-B_EIA-3528-21_Hand | C38 |
| 1 | 2k2 | Resistors_SMD:R_1206_HandSoldering | R2 |
| 1 | 2k2 | Resistors_ThroughHole:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4 |
| 1 | 2u2 | Capacitors_ThroughHole:C_Rect_L33.0mm_W13.0mm_P27.50mm_MKS4 | C8 |
| 1 | 330 | Resistors_ThroughHole:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R30 |
| 1 | 330 | Resistors_SMD:R_1206_HandSoldering | R5 |
| 1 | 33n | Capacitors_ThroughHole:C_Disc_D11.0mm_W5.0mm_P5.00mm | C24 |
| 1 | 3k3 | Resistors_ThroughHole:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R40 |
| 1 | 470k | Resistors_ThroughHole:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R15 |
| 1 | 474 | L_7x7:L_7x7_II | L2 |
| 1 | 4u7 | Capacitors_ThroughHole:CP_Radial_D6.3mm_P2.50mm | C2 |
| 1 | 5.7MHz | glass_xtal:glass_xtal | X1 |
| 1 | 510k | Resistors_ThroughHole:R_Axial_DIN0309_L9.0mm_D3.2mm_P15.24mm_Horizontal | R25 |
| 1 | 68 | Resistors_ThroughHole:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R6 |
| 1 | 68k | Resistors_ThroughHole:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R17 |
| 1 | 6n8 | Capacitors_ThroughHole:C_Rect_L9.0mm_W3.2mm_P7.50mm_MKT | C34 |
| 1 | 715 | Resistors_ThroughHole:R_Axial_DIN0411_L9.9mm_D3.6mm_P12.70mm_Horizontal | R1 |
| 1 | 715 | Resistors_ThroughHole:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R39 |
| 1 | 74HC595 | Housings_DIP:DIP-16_W7.62mm_LongPads | U2 |
| 1 | AD558 | Housings_DIP:DIP-16_W7.62mm_LongPads | U3 |
| 1 | AOT8N50 | TO_SOT_Packages_THT:TO-220-3_Vertical | Q4 |
| 1 | BC107 | TO_SOT_Packages_THT:TO-18-3 | Q2 |
| 1 | BC140 | TO_SOT_Packages_THT:TO-39-3 | Q1 |
| 1 | BC211 | TO_SOT_Packages_THT:TO-39-3 | Q3 |
| 1 | BC307 | TO_SOT_Packages_THT:TO-92_Molded_Wide | Q7 |
| 1 | BC313 | TO_SOT_Packages_THT:TO-39-3 | Q5 |
| 1 | Conn_01x03 | Pin_Headers:Pin_Header_Straight_1x03_Pitch2.54mm | J3 |
| 1 | Conn_01x06 | Terminal_Blocks:TerminalBlock_Pheonix_PT-3.5mm_6pol | J4 |
| 1 | D_Schottky | Diodes_ThroughHole:D_DO-35_SOD27_P10.16mm_Horizontal | D7 |
| 1 | EAA91 | tube_sockets:HEPTAL1 | V1 |
| 1 | GM_SBM-20 | GM_sbm-20:GM_SBM-20 | G1 |
| 1 | IRF740A | TO_SOT_Packages_THT:TO-220-3_Vertical | Q6 |
| 1 | Jumper | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | JP1 |
| 1 | LM2596 | TO_SOT_Packages_SMD:TO-263-5_TabPin3 | U5 |
| 1 | L_Core_Ferrite | Choke_SMD:Choke_SMD_12x12mm_h8mm | L1 |
| 1 | L_Core_Ferrite | F1001:F1001_coil | L3 |
| 1 | MAA725 | TO-5:TO-5-8_H08C | U4 |
| 1 | MCP1402 | TO_SOT_Packages_SMD:SOT-23-5_HandSoldering | U6 |
| 1 | MSP430G2553_PW20 | Housings_DIP:DIP-20_W7.62mm_LongPads | U1 |
| 1 | RELAY_DPST | RELAY_DPST_Telfa_K-8:RELAY_DPST_Telfa_K-8 | K1 |
| 1 | SS34 | Diodes_SMD:D_SMA-SMB_Universal_Handsoldering | D5 |
| 1 | Transformer_1P_1S | F1001:F1001_trans | T1 |
The 121 most common of 125 parts.
Questions
How big is the Geiger PCB?
It measures 160 × 112.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Geiger use?
125 parts, built around the LM2596S-5.0, 74HC595, MCP1402 and BC847. 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 Geiger KiCad files?
From the slomkowski/octoglow repository on GitHub, at the commit this page was made from: the board is pcb/geiger/geiger.kicad_pcb and its schematic pcb/clock-display/clock-display.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Geiger 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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