2 layers265.5 × 132.3 mm
Dashdash
Churrosoft/Dashdash
tablero de instrumentos por can para integrar con OpenEFI, cuando se nos ocurra algo mas original cambiamos el nombre
272 parts1MIT
2 layers78.7 × 53.3 mm
Coffee timer
tibordp/coffee-timer1Kitchen timer on an ATtiny85 with a 7-segment display and a couple of shift registers
- Size
- 78.7 × 53.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 28
- Nets
- 36
- Pads
- 131
- Tracks, vias
- 221, 35
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 7 Jan 2021
- Updated
- 11 Jun 2022
Overview
Coffee timer is an open-source printed circuit board by tibordp, from the tibordp/coffee-timer repository on GitHub, published under the GPL-2.0 licence. It is a 2-layer board of 78.7 × 53.3 mm with 28 parts on 36 nets, routed with 221 tracks and 35 vias.
It is built around the ATTINY85-20PU, 74HC595 and LTS-6980HR, with the PN2222A among its other parts. Its parts include 9 resistors, 3 capacitors, 3 ICs, 2 switches and 1 transistor. It belongs with the lEDs and displays boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
4
ATTINY85-20PU
PDIP-8-40℃~+85℃ 10bit 2.7V~5.5V 20MHz 512Byte 512Byte 6 8 Bit 8KB AVR Built-in FLASH PDIP-8 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
74HC595
SOP-16-40℃~+85℃ 1 100ns@5V,50pF 10MHz 2V~6V 74HC 8 Serial-to-Serial or Parallel Tri-State SOP-16 Shift Registers ROHSGRShift Registers
LTS-6980HR
DIP-100.56 1 19.05mmx12.6mmx8mm 7 Segment 75mW Common Cathode Red DIP-10 LED Segment Displays ROHSLite-OnLED Segment Displays
PN2222A
TO-92-3-55℃~+150℃ 1 NPN 1A 300MHz 300mV 40V 625mW NPN TO-92-3 Bipolar (BJT) ROHSNTE ElectronicsBipolar (BJT)
README
README.mdCoffee Timer
Simple kitchen timer using ATTiny85, a pair of 74HC595 shift registers and a 7-segment LED display.
Parts
28| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 220R | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R2, R3, R4, R5, R6, R7, R8, R9 |
| 4 | LTS-6980HR | Display_7Segment:7SegmentLED_LTS6760_LTS6780 | AFF1, AFF2, AFF3, AFF4 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_2.5mm_Pad_TopBottom | H1, H2, H3, H4 |
| 3 | 100n | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C1, C2, C3 |
| 2 | 74HC595 | Package_DIP:DIP-16_W7.62mm | U3, U4 |
| 2 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1, SW2 |
| 1 | 100R | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1 |
| 1 | ATtiny85-20PU | Package_DIP:DIP-8_W7.62mm | U1 |
| 1 | Buzzer | Buzzer_Beeper:Buzzer_12x9.5RM7.6 | BZ1 |
| 1 | PN2222A | Package_TO_SOT_THT:TO-92_Inline_Wide | Q1 |
| 1 | Screw_Terminal_01x02 | TerminalBlock_TE-Connectivity:TerminalBlock_TE_282834-2_1x02_P2.54mm_Horizontal | J1 |
Questions
How big is the Coffee timer PCB?
It measures 78.7 × 53.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Coffee timer use?
28 parts, built around the ATTINY85-20PU, 74HC595, LTS-6980HR and PN2222A. 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 Coffee timer KiCad files?
From the tibordp/coffee-timer repository on GitHub, at the commit this page was made from: the board is kicad/Coffee Timer.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Coffee timer design in my own project?
Its repository publishes it under the GPL-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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