HardLabs

Afterglow 1.1

bitfieldlabs·afterglow·afterglow_pcb_v11/afterglow_nano.kicad_pcb

Afterglow 1.1 PCB layout, top view — open source AVR/Arduino board by bitfieldlabs
Simulate this board

About the Afterglow 1.1 PCB

Afterglow 1.1 is an open source AVR/Arduino PCB design by bitfieldlabs, published on GitHub. It is a 2-layer board measuring 193.5 × 80 mm, with 78 components from 30 distinct parts.

Its main chip is the PC817, from the AVR/Arduino family. By type, the board carries 32 resistors, 24 transistors, 8 connectors, 6 ICs, 4 capacitors and 2 diodes.

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 1.1, from the project README
From the project README

Main components on the Afterglow 1.1

PC817

Afterglow 1.1 bill of materials (BOM)

78 components, 30 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
PC817
74LS165
U1, U2
1
PC817
5V_Regulator
U3
1
PC817
arduino nano
U4
2
PC817
74HC595
U5, U6
8
AO3401A
2N3904
Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8
8
AO3400A
FQP27P06
Q9, Q10, Q11, Q12, Q13, Q14, Q15, Q16
2
AO3400A
FQP30N06L
Q17, Q18
6
FQP30N06L
Q19, Q20, Q21, Q22, Q23, Q24
1
J133_IN_R
J34 IN
1
J137_IN_C
J38 IN
1
J133_OUT_R
J133 OUT
1
J134_OUT_R
J134 OUT
1
J135_OUT_R
J135 OUT
1
136_OUT_C
J136 OUT
1
J137_OUT_C
J137 OUT
1
J138_OUT_C
J138 OUT
1
Conn_Power
+ 18V -
1
5A SB
F1
1
RB080
LED
D1
1
RB080
1N4004
D2
Show 10 more
QtyPartRefs
1
100N
0.33
C1
1
100N
0.1
C2
1
0.33
C3
1
22P
1000uF
C4
8
1k
R1, R2, R3, R4, R5, R6, R7, R8
9
220
R9, R21, R22, R23, R24, R25, R26, R27 +1
9
10k
R10, R11, R12, R13, R14, R15, R16, R17 +1
1
390
RN1
4
10k
RN2, RN4, RN5, RN6
1
2k
RN3

Afterglow 1.1 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 1.1: common questions

What microcontroller does the Afterglow 1.1 use?

The Afterglow 1.1 is built around the PC817, from the AVR/Arduino family.

How big is the Afterglow 1.1 PCB?

The Afterglow 1.1 measures 193.5 × 80 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Afterglow 1.1?

78 components, from 30 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 1.1 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 1.1 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.

Can I test firmware for the Afterglow 1.1 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

More boards in afterglow

Similar boards