BinaryClock
About the BinaryClock PCB
BinaryClock is an open source AVR/Arduino PCB design by TDHolmes, published on GitHub. It is a 2-layer board measuring 76.2 × 50.8 mm, with 48 components from 18 distinct parts.
Its main chip is the ATTINY4313, from the AVR/Arduino family. Other key parts include the FT230XS-U, STP16CPC26MTR and DS3231MZ/V+. By type, the board carries 20 LEDs, 10 capacitors, 7 resistors, 4 ICs, 3 transistors and 2 connectors.
From the project
The Firmware, PCB files and Software for the Binary Clock 2.0 project.
Main components on the BinaryClock
BinaryClock bill of materials (BOM)
48 components, 18 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ATTINY4313 ATTINY2313A-S | SOIC-20_7.5x12.8mm_Pitch1.27mm | IC1 |
| 1 | FT230XS-U FT230XS | SSOP-16_3.9x4.9mm_Pitch0.635mm | U1 |
| 1 | STP16CPC26MTR STP16CPC26 | SOIC-24_7.5x15.4mm_Pitch1.27mm | U2 |
| 1 | DS3231MZ/V+ DS3231M | SOIC-8_3.9x4.9mm_Pitch1.27mm | U3 |
| 3 | DMG9933USD-13DI DMG9933USD | SOIC-8-N | Q1, Q2, Q3 |
| 1 | 2013499-1 USB_OTG | 2013499-1 | P1 |
| 1 | 15910060 CONN_02X03 | 2x3_header_smd_0.1in | P2 |
| 1 | S8201-46R CR1220 | S8201-46R | BT1 |
| 1 | SW_PUSH | SW_SPST_PTS645 | SW1 |
| 20 | CLY6D-FKC | CREELED_6 | D_H_1, D_H_2, D_H_4, D_H_8, D_H_10, D_H_20, D_M_1, D_M_2 +12 |
| 1 | C0805C104K3RACTU .1 uF | C_0805 | C1 |
| 2 | 885012007032 47 pF | C_0805 | C2, C3 |
| 1 | CC0805KKX7R7BB105 1 uF | C_0805 | C4 |
| 1 | GRM21BR61E475KA12L 4.7 uF | C_0805 | C5 |
| 5 | C0805C104K3RACTU 0.1 uF | C_0805 | C6, C7, C8, C9, C10 |
| 2 | RC0805JR-0727RL R27 | R_0805 | R3, R4 |
| 4 | RC0805JR-071KL 1K | R_0805 | R5, R7, R8, R9 |
| 1 | RC0805JR-072KL 2K | R_0805 | R6 |
BinaryClock design files
The KiCad project lives in the TDHolmes/BinaryClock repository on GitHub; these links point at the commit this page was built from.
BinaryClock: common questions
What microcontroller does the BinaryClock use?
The BinaryClock is built around the ATTINY4313, from the AVR/Arduino family.
How big is the BinaryClock PCB?
The BinaryClock measures 76.2 × 50.8 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the BinaryClock?
48 components, from 18 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 BinaryClock design files?
From the TDHolmes/BinaryClock repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the BinaryClock design in my own project?
The repository has no license, so all rights stay with TDHolmes. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the BinaryClock 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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