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Mtg life counter

mprosk·mtg_life_counter·pcb/mtg_life_counter.kicad_pcb

Mtg life counter PCB layout, top view — open source AVR/Arduino board by mprosk
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About the Mtg life counter PCB

Mtg life counter is an open source AVR/Arduino PCB design by mprosk, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 167.6 × 101.6 mm, with 85 components from 26 distinct parts.

Its main chip is the ATmega328P-AU, from the AVR/Arduino family. Other key parts include the 74HC595, TPIC6B595 and 74HC165. By type, the board carries 48 resistors, 12 capacitors, 8 ICs, 5 diodes, 2 connectors and 2 switches.

It belongs with the displays & leds designs in this gallery.

From the project

Four player life counter for Magic: The Gathering

Four player life counter for Magic: The Gathering

Version 2 software is still WIP, hardware is stable

Check out the Version 1 branch (pictured below)

- Improve denounce of encoders - Change modes by clicking encoder button once - Clicking the button after changing a non-self value returns directly to self view

- Do not show deltas on non-self values - Allow Roll result be cleared by any input - Possibly use micros() for RNG

Mtg life counter, from the project README
From the project README

Main components on the Mtg life counter

ATmega328P-AU74HC595TPIC6B59574HC165

Mtg life counter bill of materials (BOM)

85 components, 26 distinct parts.

QtyPartRefs
1
ATmega328P-AU
U1
4
74HC595
U2, U3, U4, U5
2
TPIC6B595
U6, U7
1
74HC165
U8
1
16MHz
Y1
1
USB C 4907
J1
1
TP_UART
J3
2
SW_Push
B1, B2
4
Rotary_Encoder_Switch
E1, E2, E3, E4
1
JP_SR
JP2
2
SW_SPST
SW1, SW2
1
KW4-S561CxB RED SMD
D1
1
KW4-S561CxB GREEN SMD
D2
1
KW4-S561CxB YELLOW SMD
D3
1
KW4-S561CxB BLUE SMD
D4
1
PJSD05W_R1_00001
D5
8
0.1uF
C1, C4, C5, C6, C7, C8, C9, C10
1
4.7uF
C2
2
1uF
C3, C11
1
10uF
C12
Show 6 more
QtyPartRefs
14
10k
R1, R2, R3, R4, R5, R6, R50, R51 +6
8
330
R10, R11, R12, R13, R14, R15, R16, R17
8
10
R20, R21, R22, R23, R24, R25, R26, R27
8
100
R30, R31, R32, R33, R34, R35, R36, R37
8
390
R40, R41, R42, R43, R44, R45, R46, R47
2
5.1k
R60, R61

Mtg life counter design files

The KiCad project lives in the mprosk/mtg_life_counter repository on GitHub; these links point at the commit this page was built from.

Mtg life counter: common questions

What microcontroller does the Mtg life counter use?

The Mtg life counter is built around the ATmega328P-AU, from the AVR/Arduino family.

How big is the Mtg life counter PCB?

The Mtg life counter measures 167.6 × 101.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Mtg life counter?

85 components, from 26 distinct parts. The full bill of materials is listed on this page.

Where can I download the Mtg life counter design files?

From the mprosk/mtg_life_counter repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Mtg life counter design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which mprosk chose for the repository.

Can I test firmware for the Mtg life counter 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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