HardLabs

Afterglow 1.3

bitfieldlabs·afterglow·afterglow_pcb_v14/afterglow_nano_smd.kicad_pcb

Afterglow 1.3 PCB layout, top view — open source board by bitfieldlabs
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About the Afterglow 1.3 PCB

Afterglow 1.3 is an open source PCB design by bitfieldlabs, published on GitHub. It is a 2-layer board measuring 128.7 × 81 mm, with 124 components from 36 distinct parts.

Other key parts include the PC817. By type, the board carries 67 resistors, 17 diodes, 16 transistors, 9 connectors, 6 ICs and 4 capacitors.

It belongs with the retro computing designs in this gallery.

From the project

Pinball retro afterglow

AFTERGLOW is a pinball machine extension board that aims at softening the hard lamp on/off transitions which are the consequence of replacing the original incandescent bulbs with LEDs. Reproducing the original light effects is a big part of preserving a pinball game's nostalgia.

It currently works with Williams WPC, Williams System 11, Data East and probably also with Sega games. The basic principle involves resampling of the original lamp matrix signals at a higher frequency. This allows for PWM LED dimming with additional brightness steps.

Afterglow 1.3, from the project README
From the project README

Main components on the Afterglow 1.3

PC817

Afterglow 1.3 bill of materials (BOM)

124 components, 36 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
PC817
74LS165
U1, U2
1
PC817
5V_Regulator
U3
2
PC817
74HC595
U5, U6
1
PC817
ULN2803A
U7
8
AO3401A
IRFR9024
Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8
8
AO3400A
IRLR024
Q9, Q10, Q11, Q12, Q13, Q14, Q15, Q16
1
J133_IN_R
J137_IN_C
J1
1
J137_IN_C
J133_IN_R
J2
1
Conn_Power
J3
1
CONN_01X10_PIN
J133_OUT_R
J4
1
CONN_01X10_PIN
J137_OUT_C
J5
1
CONN_01X04_SOCKET
J134_OUT_R
J6
1
CONN_02X03_ODD_EVEN
J138_OUT_C
J7
1
CONN_02X03_ODD_EVEN
J135_OUT_R
J8
1
J133_OUT_R
136_OUT_C
J9
1
5A SB
F1-2A
1
CFG
SW1
3
TestPoint
TP1, TP2, TP3
2
RB080
D1, D17
7
RB080
4.7V
D2, D3, D4, D5, D6, D7, D8
Show 16 more
QtyPartRefs
1
3.0V
4.7V
D9
7
3.0V
RB080
D10, D11, D12, D13, D14, D15, D16
1
100N
1000uF
C1
1
100N
0.33
C2
1
0.1
C3
1
22P
0.33
C4
24
1k
R1, R2, R3, R4, R5, R6, R7, R8 +16
17
10k
R25, R27, R28, R29, R30, R31, R32, R33 +9
1
0.22
R26
6
2k
R35, R36, R39, R40, R41, R42
2
5K1
2k
R37, R38
2
220
R43, R45
5
10K
10k
R44, R59, R61, R63, R65
6
10K
220
R47, R49, R51, R53, R55, R57
3
220
10k
R62, R64, R66
1
10K
18V COL
R67

Afterglow 1.3 design files

The KiCad project lives in the bitfieldlabs/afterglow repository on GitHub; these links point at the commit this page was built from.

Afterglow 1.3: common questions

How big is the Afterglow 1.3 PCB?

The Afterglow 1.3 measures 128.7 × 81 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Afterglow 1.3?

124 components, from 36 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 Afterglow 1.3 design files?

From the bitfieldlabs/afterglow repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Afterglow 1.3 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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