2 layers
2 layers215.9 × 177.8 mm
SimpleClock
mwwhited/EmbeddedBakery1Collection of arduino, avr and pic projects
- Size
- 215.9 × 177.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 31
- Nets
- 35
- Pads
- 105
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 6 (file 20211014)
- Created
- 25 Nov 2020
- Updated
- 9 Apr 2026
Overview
SimpleClock is an open-source printed circuit board by mwwhited, from the mwwhited/EmbeddedBakery repository on GitHub. It is a 2-layer board of 215.9 × 177.8 mm with 31 parts on 35 nets.
It is built around the ATTINY2313-20PU. Its parts include 20 resistors, 5 switches, 2 capacitors, 2 ICs and 2 connectors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
circuits/HelperBoards/Wave Form Generator Amplifier/readme.mdWave Form Amplifier
By: Matthew Whited Out-of-Band Development 2023
Summary
This is a schematic for a LM324 based amplifier that takes provides matching amplification/attenuation and DC offset to an arbitray wave form generator.
Parts
31| Qty | Value | Footprint | References |
|---|---|---|---|
| 19 | 470 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2, R3, R4, R5, R6, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20 +3 |
| 4 | SW_Push | Button_Switch_THT:SW_Tactile_Straight_KSA0Axx1LFTR | SW2, SW3, SW4, SW5 |
| 1 | 100nF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C1 |
| 1 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 33uF | Capacitor_THT:CP_Radial_D4.0mm_P2.00mm | C2 |
| 1 | ATtiny2313-20P | Package_DIP:DIP-20_W7.62mm | U1 |
| 1 | AVR-ISP-6 | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J2 |
| 1 | KW4-56NCWB-P-Y | MyCustomLibrary:4 Digit 7 Segment Display | U2 |
| 1 | SW_SPDT | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | SW1 |
| 1 | Screw_Terminal_01x02 | TerminalBlock:TerminalBlock_Altech_AK300-2_P5.00mm | J1 |
Questions
How big is the SimpleClock PCB?
It measures 215.9 × 177.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the SimpleClock use?
31 parts, built around the ATTINY2313-20PU. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the SimpleClock KiCad files?
From the mwwhited/EmbeddedBakery repository on GitHub, at the commit this page was made from: the board is circuits/SimpleClock/SimpleClock/SimpleClock.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the SimpleClock design in my own project?
Its repository states no licence, so its author keeps all rights: ask mwwhited before reusing the design.
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