4 layers68.6 × 53.3 mm
2 layers68.6 × 53.3 mm
TapMatrix
cbonsig/openclock27Open Clock: an open source hardware touchscreen digital clock
- Size
- 68.6 × 53.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 31
- Nets
- 50
- Pads
- 162
- Tracks, vias
- 313, 64
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 22 Aug 2012
- Updated
- 10 Apr 2015
Overview
TapMatrix is an open-source printed circuit board by cbonsig, from the cbonsig/openclock repository on GitHub. It is a 2-layer board of 68.6 × 53.3 mm with 31 parts on 50 nets, routed with 313 tracks and 64 vias.
It is built around the 74LS125DC, MCP4921-E/SN and DS3231S#, with the CR2032 among its other parts. Its parts include 9 capacitors, 6 ICs, 5 resistors and 2 connectors. It belongs with the lEDs and displays boards of this library.
Main components
474LS125DC
-0℃~+70℃ 1 10ns@5.5V,50pF 15mA 18mA 24mA 4 4.5V~5.5V 74LS Power-off isolation、Output enable Tri-State Unidirectional - Buffers, Drivers, Receivers, TransceiversTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
MCP4921-E/SN
SOIC-8-40℃~+125℃ 1 12 175uA 2.7V~5.5V 4.5us 4LSB Power-on reset、Power-down mode、Programmable gain SPI Voltage Buffer SOIC-8 Digital to Analog Converters (DAC) ROHSMicrochip TechnologyDigital To Analog Converters (DAC)
DS3231S#
RTC, I²C, ±3.5ppm, SOIC16Maxim Integrated (Analog Devices)Uncategorised
CR2032
-- Unclassified goods ROHSMaxellUncategorised
README
README.mdopenclock
A clock designed to resolve the flaws of every annoying alarm clock that I've ever owned. Large display that can be easily read with uncorrected vision, adaptive brightness based on the time of day, intuitive touchscreen interface, clear feedback on the state of the alarm, intelligent alarm audio. Powered by Arduino. A work in progress. Journal of effort to date at http://clock.bonsignore.com
Open Clock Project by Craig Bonsignore is licensed under a Creative Commons Attribution-ShareAlike 3.0 United States License.Based on a work at http://clock.bonsignore.com.
Parts
31| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 0.1uF | tapmatrix:C_0603 | C1, C2, C3, C5, C7 |
| 3 | 100uF/6V | tapmatrix:EEE-0JA101WR | C4, C6, C9 |
| 2 | R | tapmatrix:R_0603 | R1, R2 |
| 1 | 0.01uF | tapmatrix:C_0603 | C8 |
| 1 | 1.5K | tapmatrix:R_0603 | R4 |
| 1 | 100K | tapmatrix:R_0603 | R3 |
| 1 | 10K | tapmatrix:R_0603 | R5 |
| 1 | 4_PIN_1 | tapmatrix:Pin_Header_Straight_1x04 | JP5 |
| 1 | 6_PIN_1 | tapmatrix:Pin_Header_Straight_1x06 | JP1 |
| 1 | 6_PIN_2 | tapmatrix:Pin_Header_Straight_1x06 | JP2 |
| 1 | 6_PIN_3 | tapmatrix:Pin_Header_Straight_1x06 | JP7 |
| 1 | 74LS125 | tapmatrix:SO-14 | U3 |
| 1 | 8_PIN_1 | tapmatrix:Pin_Header_Straight_1x08 | JP3 |
| 1 | 8_PIN_2 | tapmatrix:Pin_Header_Straight_1x08 | JP4 |
| 1 | CR2032 | tapmatrix:CR2032 | BT1 |
| 1 | DS3231 | tapmatrix:DS3231 | U6 |
| 1 | LED_MATRIX_HDR | tapmatrix:5103310-3 | P6 |
| 1 | MCP1703 | tapmatrix:SOT89-3_Housing | U1 |
| 1 | MCP4921-E/SN | SOIC-8_N | U2 |
| 1 | POT | tapmatrix:TC33X | RV1 |
| 1 | SD_CARD | 114-00841-68 | U5 |
| 1 | SPKR | tapmatrix:Pin_Header_Straight_1x02 | JP6 |
| 1 | TS922 | TS922_SO8 | U4 |
| 1 | TS_ZIF | tapmatrix:SFW4R5STE1LF | P5 |
Questions
How big is the TapMatrix PCB?
It measures 68.6 × 53.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the TapMatrix use?
31 parts, built around the 74LS125DC, MCP4921-E/SN, DS3231S# and CR2032. 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 TapMatrix KiCad files?
From the cbonsig/openclock repository on GitHub, at the commit this page was made from: the board is kicad/tapMatrix_Shield/tapMatrix.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the TapMatrix design in my own project?
Its repository states no licence, so its author keeps all rights: ask cbonsig before reusing the design.
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