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Lights back

telec16·modular-synth·Lights/Lights_back.kicad_pcb

Lights back PCB layout, top view — open source AVR/Arduino board by telec16
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About the Lights back PCB

Lights back is an open source AVR/Arduino PCB design by telec16, published on GitHub. It is a 2-layer board measuring 50 × 174 mm, with 99 components from 33 distinct parts.

Its main chip is the ATmega328P-PU, from the AVR/Arduino family. Other key parts include the L7805, TL074, 74LS04 and 6N138. By type, the board carries 42 resistors, 12 connectors, 11 ICs, 10 diodes, 10 capacitors and 6 transistors.

It belongs with the audio designs in this gallery.

From the project

~~Little side project, don't expect much updates.~~

~~Little side project, don't expect much updates.~~

VCO - 3340 - Schmitt inverter - Opamp V1 - Opamp V2 LFO - Hex Inverter Sequencer - µC - random jazz generator Random generator - zener - µC ADSR - Opamp VCA - LM13700 - Vactrol Quantizer (CV correction) - µC VCF - ? Drum kit - ??? Frequency multiplier/divider - CD4046 PLL V1 - CD4046 PLL V2 Wavefolder - Bipolar - Opamp CV Glider - RC circuit * Scope - µC

Main components on the Lights back

L7805ATmega328P-PUTL07474LS046N138

Lights back bill of materials (BOM)

99 components, 33 distinct parts.

QtyPartRefs
2
L7805
U101, U102
1
ATmega328P-PU
U103
3
TL074
U201, U501, U601
1
74LS04
U301
4
6N138
U302, U401, U701, U801
3
PN2222A
Q401, Q701, Q801
3
IRF540N
Q402, Q702, Q802
1
16MHz
Y101
1
chain_in
J101
1
chain_out
J102
1
THRU
J106
1
OUT
J107
1
IN
J108
1
EuroPower
J109
1
ExternalPower
J110
1
Programming
J111
1
chain_power
J112
3
Light
J401, J701, J801
6
100k
RV201, RV202, RV501, RV502, RV601, RV602
1
MIDI_settings
SW101
Show 13 more
QtyPartRefs
1
D_Bridge_+-AA
D101
2
LED
D102, D103
7
1N4148
D201, D202, D301, D501, D502, D601, D602
5
100n
C101, C102, C104, C105, C301
4
1u
C103, C106, C108, C109
1
10u
C107
11
1k
R101, R102, R208, R401, R403, R508, R608, R701 +3
1
22k
R103
15
100k
R201, R202, R203, R205, R207, R501, R502, R503 +7
3
200k
R204, R504, R604
3
100k
R206, R506, R606
6
220
R301, R302, R303, R304, R305, R306
3
100
R402, R702, R802

Lights back design files

The KiCad project lives in the telec16/modular-synth repository on GitHub; these links point at the commit this page was built from.

Lights back: common questions

What microcontroller does the Lights back use?

The Lights back is built around the ATmega328P-PU, from the AVR/Arduino family.

How big is the Lights back PCB?

The Lights back measures 50 × 174 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Lights back?

99 components, from 33 distinct parts. The full bill of materials is listed on this page.

Where can I download the Lights back design files?

From the telec16/modular-synth repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Lights back design in my own project?

The repository has no license, so all rights stay with telec16. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Lights back 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.

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