Lmello1/ProtoPCB3Business card PCB and pocket Attiny3227 and LED matrix playground. Powered by a CR2032 battery
PCBbuscard is an open-source printed circuit board by Lmello1, from the Lmello1/ProtoPCB repository on GitHub. It is a 2-layer board of 53.3 × 83.3 mm with 291 parts on 76 nets, routed with 932 tracks and 304 vias.
It is built around the ATTINY3217-MF and 74HC595. Its parts include 256 diodes, 16 resistors, 6 ICs and 3 switches. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Business card PCB and pocket Attiny3227 and LED matrix playground. Powered by a CR2032 battery
A business card PCB based on the ATTINY3227 chipset. Using 4 74HC595D shift registers to drive a 256 LED matrix. With a standard UDPI interface and 3 input buttons the possibilities are endless. The current code includes various games and demo programs. Please feel free to make your own and share!
NOTE: Shift register U3 is reversed for easier routing.
led matrix data flow
attiny3227
V
\_________>_______________________>______________________
U1 U2 \
____________________ ____________________ |
/ \ / \ |
X X X X X X X X X X X X X X X X \ |
X X X X X X X X X X X X X X X X | |
X X X X X X X X X X X X X X X X | |
X X X X X X X X X X X X X X X X |---- U3---V--(REVERSED)
X X X X X X X X X X X X X X X X | |
X X X X X X X X X X X X X X X X | |
X X X X X X X X X X X X X X X X | |
X X X X X X X X X X X X X X X X / |
X X X X X X X X X X X X X X X X \ |
X X X X X X X X X X X X X X X X | |
X X X X X X X X X X X X X X X X | |
X X X X X X X X X X X X X X X X |---- U4 V
X X X X X X X X X X X X X X X X | |
X X X X X X X X X X X X X X X X | |
X X X X X X X X X X X X X X X X | |
X X X X X X X X X X X X X X X X / *Rev 1.0 - 1st working version (Do not recreate-one shorted track) NOTE: Removed from github
Rev 2.0 - Vertical PCB format and visual improvements. Changed foorptints for shift registers
Rev 3.0 - CR2032 battery holder added for the back, Track routing improvements
Landon Mello @Landon_Mello
Ben Liebmann
| Qty | Value | Footprint | References |
|---|---|---|---|
| 256 | LED | Library:LED_0603_1608Metric_no_text | D1, D10, D11, D100, D101, D102, D103, D104, D105, D106, D107, D108, D109, D110, D111, D112 +240 |
| 16 | 220 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16 |
| 6 | TestPoint_Probe | TestPoint:TestPoint_THTPad_1.0x1.0mm_Drill0.5mm | TP4, TP5, TP6, TP7, TP8, TP9 |
| 4 | 74HC595 | SamacSys_Parts:SOIC127P600X175-16N | U1, U2, U3, U4 |
| 3 | SW_Push | Button_Switch_SMD:SW_DIP_SPSTx01_Slide_6.7x4.1mm_W6.73mm_P2.54mm_LowProfile_JPin | SW1, SW2, SW3 |
| 3 | TestPoint | Connector_Pin:Pin_D1.1mm_L8.5mm_W2.5mm_FlatFork | GND, PROG, VCC |
| 1 | ATtiny3217-M | Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm_ThermalVias | U5 |
| 1 | BAT | SamacSys_Parts:BATHLD001 | U6 |
| 1 | TestPoint_Probe | Connector_Pin:Pin_D1.1mm_L8.5mm_W2.5mm_FlatFork | CLK |
It measures 53.3 × 83.3 mm and has 2 copper layers, 1.6 mm thick.
291 parts, built around the ATTINY3217-MF and 74HC595. 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.
From the Lmello1/ProtoPCB repository on GitHub, at the commit this page was made from: the board is PCB rev 3.0/PCBbuscard/PCBbuscard.kicad_pcb and its schematic PCB rev 3.0/PCBbuscard/PCBbuscard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask Lmello1 before reusing the design.
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