HardLabs

Clock rtc

kseebaldt·clock_rtc·kicad/TimerClock/TimerClock.kicad_pcb

Clock rtc PCB layout, top view — open source AVR/Arduino board by kseebaldt

About the Clock rtc PCB

Clock rtc is an open source AVR/Arduino PCB design by kseebaldt, published on GitHub. It is a 2-layer board measuring 100 × 100 mm, with 31 components from 18 distinct parts.

Its main chip is the ATmega328P-PU, from the AVR/Arduino family. Other key parts include the CD4511BE and DS1307+. By type, the board carries 12 resistors, 5 switches, 4 capacitors, 3 ICs, 2 crystals and 2 connectors.

From the project

Arduino based etc clock

Main components on the Clock rtc

CD4511BEATmega328P-PUDS1307+

Clock rtc bill of materials (BOM)

31 components, 18 distinct parts.

QtyPartRefs
1
CD4511BE
IC1
1
ATmega328P-PU
U1
1
DS1307+
U2
1
16MHz
Y1
1
32KHz
Y2
1
Conn_01x03
J1
1
USB_B_Micro
J2
1
Battery_Cell
BT1
1
Buzzer
BZ1
1
TDCG1060M
DS1
2
OS102011MS2QN1
S1, S2
3
SW_Push
SW2, SW3, SW4
2
22pF
C1, C2
2
0.1uF
C3, C4
1
10k
R1
2
2.2k
R2, R3
8
220
R4, R5, R6, R8, R9, R10, R11, R12
1
1k
R7

Clock rtc design files

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

Clock rtc: common questions

What microcontroller does the Clock rtc use?

The Clock rtc is built around the ATmega328P-PU, from the AVR/Arduino family.

How big is the Clock rtc PCB?

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

How many components are on the Clock rtc?

31 components, from 18 distinct parts. The full bill of materials is listed on this page.

Where can I download the Clock rtc design files?

From the kseebaldt/clock_rtc repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Clock rtc design in my own project?

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

Can I test firmware for the Clock rtc 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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