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SLLed

iamjackchen·SLLed·Hardware/ProjectSLL.kicad_pcb

SLLed PCB layout, top view — open source AVR/Arduino board by iamjackchen

About the SLLed PCB

SLLed is an open source AVR/Arduino PCB design by iamjackchen, published on GitHub. It is a 2-layer board measuring 100 × 100 mm, with 61 components from 21 distinct parts.

Its main chip is the ATMEGA16U2-A, from the AVR/Arduino family. Other key parts include the AMS1117-5.0. By type, the board carries 24 resistors, 18 diodes, 9 capacitors, 3 switches, 2 ICs and 2 battery holders.

From the project

A decorative lighting piece I designed as a gift for an old ex. That relationship has ended, so I thought I could make it a part of my public portfolio and put it to use in finding a job (help).

A decorative lighting piece I designed as a gift for an old ex. That relationship has ended, so I thought I could make it a part of my public portfolio and put it to use in finding a job (help).

The project is called "SLLed" because the intended recipient had supposedly caught me talking about singly-linked lists in my sleep. wtaf.

Inspired by https://www.instructables.com/DIY-LED-heart/.

SLLed, from the project README
From the project README

Main components on the SLLed

AMS1117-5.0ATMEGA16U2-A

SLLed bill of materials (BOM)

61 components, 21 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
AMS1117-5.0
U1
1
ATMEGA16U2-A
ATmega16U2-A
U2
1
C15127
Q_PMOS_GSD
Q1
1
CRYSTAL_GND24
Crystal_GND24
Y1
1
USB_C_RECEPTACLE_USB2.0
USB_C_Receptacle_USB2.0
J1
2
C70377
CR2032 (3V)
BT1, BT2
1
C963206
SW_SPDT
SW1
2
SW_Push
SW2, SW5
16
C84256
LED_Small
D1, D2, D3, D4, D5, D6, D7, D8 +8
2
D_Schottky_Small
D17, D18
2
0.1UF
0.1uF
C1, C2
2
22PF
22pF
C3, C5
1
4.7UF
4.7uF
C4
1
10UF
10uF
C6
1
1UF
1uF
C7
2
10UF
10uF
C8, C9
2
5.1K
R1, R2
2
22
R3, R4
3
10K
R5, R15, R26
1
100K
R6
Show 1 more
QtyPartRefs
16
220
R7, R8, R9, R10, R11, R12, R13, R14 +8

SLLed design files

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

SLLed: common questions

What microcontroller does the SLLed use?

The SLLed is built around the ATMEGA16U2-A, from the AVR/Arduino family.

How big is the SLLed PCB?

The SLLed measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the SLLed?

61 components, from 21 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 SLLed design files?

From the iamjackchen/SLLed 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 SLLed design in my own project?

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

Can I test firmware for the SLLed 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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