HardLabs

CL70

Clein-KR·CL70·for_Education/PCB/CL70_PCB.kicad_pcb

CL70 PCB layout, top view — open source AVR/Arduino board by Clein-KR

About the CL70 PCB

CL70 is an open source AVR/Arduino PCB design by Clein-KR, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 343.8 × 98.1 mm, with 211 components from 27 distinct parts.

Its main chip is the ATMEGA32U4-MU, from the AVR/Arduino family. Other key parts include the C12333. By type, the board carries 72 switches, 71 diodes, 23 LEDs, 9 capacitors, 2 ICs and 1 crystal.

It belongs with the keyboards designs in this gallery.

From the project

Custom keyboard designed for the first time

해당 프로젝트는 ai03 님의 KBD8X-MKII-PCB 프로젝트와 Joe Scotto 님의 ScottoKeebs 프로젝트를 기반으로 만들어졌습니다. 해당 프로젝트를 활용한 수정, 복제, 배포 등의 활동은 저작자 표시와 함께 비영리적인 목적에 한해서만 가능하며, 라이선스 전문은 여기에서 보실 수 있습니다.

CL70, from the project README
From the project README

Main components on the CL70

ATMEGA32U4-MUC12333

CL70 bill of materials (BOM)

211 components, 27 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATMEGA32U4-MU
ATmega32U4-MU
MICROCHIP
U1
1
C12333
PRTR5V0U2X
Nexperia
U2
1
HY16MSMD3225OB1R30
16MHz
Huiyuan crystal
Y1
20
CC0603JRX7R7BB104
0.1uF
YAGEO
CRGB1, CRGB2, CRGB3, CRGB4, CRGB5, CRGB6, CRGB7, CRGB8 +12
1
BSMD1206-050-16V
500mA
BHFUSE
F1
2
RC0603FR-0722RL
22
YAGEO
RC1, RC2
3
RC0603FR-0710KL
10k
YAGEO
RC3, RC8, RC9
4
RC0603FR-071KL
1k
YAGEO
RC4, RLED1, RLED2, RLED3
2
RC0603FR-075K1L
5k1
YAGEO
RC6, RC7
57
Keyswitch
S1, S2, S3, S4, S5, S6, S7, S8 +49
4
Keyswitch
S19, S32, S63, S66
1
Keyswitch
S35
2
Keyswitch
S47, S48
1
Keyswitch
S59
3
Keyswitch
S61, S62, S67
2
Keyswitch
S64, S65
1
SKQGABE010
SW_Push
ALPSALPINE
SW1
1
RotaryEncoder_Switch
SW2
1
TYPE-C-31-M-12
HRO-TYPE-C-31-M-12
Korean Hroparts Elec
USB1
3
Placeholder_LED
LED1, LED2, LED3
Show 7 more
QtyPartRefs
20
WS2812B-V5/W
WS2812B
Worldsemi
RGB1, RGB2, RGB3, RGB4, RGB5, RGB6, RGB7, RGB8 +12
71
1N4148W
Diode
Slkor(SLKORMICRO Elec.)
D1, D2, D3, D4, D5, D6, D7, D8 +63
1
CGA0603X5R105K160JT
1uF
HRE
C2
2
C0603C220J4GAC7867
22pF
KEMET
C3, C4
1
CGA0603X5R106M160JT
10uF
HRE
C5
3
CC0603JRX7R7BB104
0.1uF
YAGEO
C6, C7, C8
2
0.01uF
C9, C10

CL70 design files

The KiCad project lives in the Clein-KR/CL70 repository on GitHub; these links point at the commit this page was built from.

CL70: common questions

What microcontroller does the CL70 use?

The CL70 is built around the ATMEGA32U4-MU, from the AVR/Arduino family.

How big is the CL70 PCB?

The CL70 measures 343.8 × 98.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the CL70?

211 components, from 27 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 CL70 design files?

From the Clein-KR/CL70 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 CL70 design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

Can I test firmware for the CL70 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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