2 layers68.6 × 53.3 mm
4 layers68.6 × 53.3 mm
TapMatrix
cbonsig/openclock27Open Clock: an open source hardware touchscreen digital clock
- Size
- 68.6 × 53.3 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 65
- Nets
- 79
- Pads
- 286
- Tracks, vias
- 783, 134
- Pours
- 2
- 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 4-layer board of 68.6 × 53.3 mm with 65 parts on 79 nets, routed with 783 tracks and 134 vias.
It is built around the ATMEGA328P-AU, 74AHC125D and FT231XS-R, with the MCP4921-E/SN, 2N7002PW and DS3231S# among its other parts. Its parts include 20 capacitors, 15 resistors, 10 ICs, 5 diodes and 4 connectors. It belongs with the lEDs and displays boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
6
ATMEGA328P-AU
TQFP-32(7x7)-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
74AHC125D
SO-14-40℃~+125℃ 1 2V~5.5V 4 4.3ns@5V,50pF 40uA 74AHC 8mA 8mA Schmitt trigger Tri-State Unidirectional SO-14 Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffer/Driver/Transceiver
FT231XS-R
SSOP-20-150mil-40℃~+85℃ 125uA 5V 8.4mA USB 2.0 USB to UART SSOP-20-150mil USB Converters ROHSFTDIUSB Converters
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)
2N7002PW
SOT-323(SC-70)-55℃~+150℃ 1 N-channel 1.6Ω@10V 2.4V 310mA 310mW 4pF 50pF 60V 800pC@4.5V N-Channel SOT-323(SC-70) MOSFETs ROHSNexperiaMOSFETs
DS3231S#
RTC, I²C, ±3.5ppm, SOIC16Maxim Integrated (Analog Devices)Uncategorised
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
65| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 0.1uF | tapmatrix:C_0603 | C1, C2, C3, C5, C7, C12, C13, C14, C18, C19, C20 |
| 3 | 100uF/6V | EEE-0JA101WR | C4, C6, C9 |
| 3 | 10K | tapmatrix:R_0603 | R5, R11, R13 |
| 3 | 1K | tapmatrix:R_0603 | R10, R12, R14 |
| 2 | 27 | tapmatrix:R_0603 | R8, R9 |
| 2 | 47pF | tapmatrix:C_0603 | C15, C16 |
| 2 | 47uF | CAP_MVA_F55 | C10, C11 |
| 2 | 510 | tapmatrix:R_0603 | R6, R7 |
| 2 | LED | D_0603 | D2, D3 |
| 2 | R | tapmatrix:R_0603 | R1, R2 |
| 1 | +9V Power | tapmatrix:PJ-102AH | P1 |
| 1 | 0.01uF | tapmatrix:C_0603 | C8 |
| 1 | 1.5K | tapmatrix:R_0603 | R4 |
| 1 | 100K | tapmatrix:R_0603 | R3 |
| 1 | 1K | R_0603 | R15 |
| 1 | 2N7002PW | tapmatrix:SOT-323 | U10 |
| 1 | 4.7uF | EEE-0JA101WR | C17 |
| 1 | 4_PIN_1 | tapmatrix:Pin_Header_Straight_1x04 | JP5 |
| 1 | 4_PIN_2 | tapmatrix:Pin_Header_Straight_1x04 | JP4 |
| 1 | 500mA | Fuse_MF_MSMF | F1 |
| 1 | 74AHC125 | tapmatrix:SO-14 | U3 |
| 1 | ATMEGA328P-A | tapmatrix:TQFP-32_7x7mm_Pitch0.8mm | U8 |
| 1 | BATTERY | tapmatrix:CR2032 | BT1 |
| 1 | CRYSTAL_SMD | XTAL_CSTCE_V | X1 |
| 1 | DIODE | DS16004 | D1 |
| 1 | DS3231 | tapmatrix:DS3231 | U6 |
| 1 | FT231XS | SSOP20_FTDI231X | U9 |
| 1 | FTDI | tapmatrix:Pin_Header_Straight_1x06 | JP1 |
| 1 | ICSP | tapmatrix:Pin_Header_Straight_2x03 | JP3 |
| 1 | LED_MATRIX_HDR | tapmatrix:5103310-3 | P6 |
| 1 | MCP1703 | tapmatrix:SOT89-3_Housing | U1 |
| 1 | MCP4921-E/SN | tapmatrix:SOIC-8_N | U2 |
| 1 | NCP1117ST50T3G | SOT223_318H | U7 |
| 1 | POT | tapmatrix:TC33X | RV1 |
| 1 | RXLED | D_0603 | D5 |
| 1 | SD_CARD | tapmatrix:114-00841-68 | U5 |
| 1 | SPKR | tapmatrix:Pin_Header_Straight_1x02 | JP6 |
| 1 | SW_PUSH | SW_3BU_1000P | RESET |
| 1 | TS922 | tapmatrix:TS922_SO8 | U4 |
| 1 | TS_ZIF | tapmatrix:SFW4R5STE1LF | P5 |
| 1 | TXLED | D_0603 | D4 |
| 1 | USB-MINI-B | tapmatrix:USBMiniB_UX60_MB_5S8 | P2 |
| 1 | nRF8001 | tapmatrix:Pin_Header_Straight_1x10 | JP2 |
Questions
How big is the TapMatrix PCB?
It measures 68.6 × 53.3 mm and has 4 copper layers, 1.6 mm thick.
What parts does the TapMatrix use?
65 parts, built around the ATMEGA328P-AU, 74AHC125D, FT231XS-R and MCP4921-E/SN. 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_Board/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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