Hat modder
bitfieldlabs·afterglow·afterglow_pcb_v30/hat_modder/hat_modder.kicad_pcb
About the Hat modder
Hat modder is an open source PCB design by bitfieldlabs, published on GitHub. It is a 2-layer board measuring 64.4 × 81 mm, with 28 components from 10 distinct parts.
Other key parts include the C6835, C5947 and C3025164. By type, the board carries 9 resistors, 8 connectors, 6 ICs, 4 diodes and 1 jumper.
It belongs with the dev boards & breakouts, displays & leds and retro computing designs in this gallery.
From the project
Pinball retro afterglow
This is the newest generation of afterglow boards for the switched playfield lamps (not the GI), supporting WPC, Data East, System 11 and Stern Whitestar/S.A.M. games.
The new board is based on the RP2040 microprocessor. It is more robust than previous versions and it supports hats!
Components were chosen based on availability and price.
The connectors and some other parts are currently not included in the assembly files.

Main components on the Hat modder
Hat modder bill of materials (BOM)
28 components, 10 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C6835 74HC244 | TSSOP-20_4.4x6.5mm_P0.65mm | U1 |
| 1 | C5947 74HC595 | SO-16_3.9x9.9mm_P1.27mm | U2 |
| 4 | C3025164 PC817 | SMDIP-4_W9.53mm | U3, U4, U5, U6 |
| 2 | Conn_01x10_Pin | PinHeader_1x10_P2.54mm_Vertical | J1, J4 |
| 2 | C92272 Conn_02x03_Odd_Even | PinHeader_2x03_P2.54mm_Vertical | J2, J3 |
| 4 | Conn_01x02_Socket | TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J5, J6, J7, J8 |
| 1 | Jumper_2_Open | PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 4 | C2296 LED | LED_0805_2012Metric | D1, D2, D3, D4 |
| 5 | C17513 1k | R_0805_2012Metric | R1, R6, R7, R8, R9 |
| 4 | C17557 220 | R_0805_2012Metric | R2, R3, R4, R5 |
Hat modder design files
The KiCad project lives in the bitfieldlabs/afterglow repository on GitHub; these links point at the commit this page was built from.
Hat modder: common questions
How big is the Hat modder?
The Hat modder measures 64.4 × 81 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Hat modder?
28 components, from 10 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Hat modder design files?
From the bitfieldlabs/afterglow repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Hat modder design in my own project?
The repository has no license, so all rights stay with bitfieldlabs. Use it as a reference, and ask the author before reusing the design.
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