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Matrixclock gnm-19881-bsg

WiseLord·matrixclock·kicad/matrixclock-gnm-19881-bsg/matrixclock-gnm-19881-bsg.kicad_pcb

Matrixclock gnm-19881-bsg PCB layout, top view — open source AVR/Arduino board by WiseLord

About the Matrixclock gnm-19881-bsg PCB

Matrixclock gnm-19881-bsg is an open source AVR/Arduino PCB design by WiseLord, published on GitHub. It is a 2-layer board measuring 191.8 × 48.4 mm, with 35 components from 16 distinct parts.

Its main chip is the ATmega328P-AU, from the AVR/Arduino family. Other key parts include the DS18B20, DS1307Z+, MAX7219 and GNM-19881-BSG. By type, the board carries 12 ICs, 10 resistors, 6 capacitors, 3 switches, 1 crystal and 1 connector.

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

From the project

4x1 LED matrix 8x8 clock

This project is a simple LED matrix clock. It can use either MAX7219 as LED drivers (one IC per matrix) either HT1632 LED driver. It's possible to use 3 or 4 matrixes, but recent code is more suitable for second option.

RTC DS1307 support (DS3231 also works) One alarm which can be enabled for any day of week Active beeper is used for alarm and signals Temperature measurement with DS18B20 sensors Pressure/temperature measurement with BMP180 sensor Humidity/temperature measurement with DHT22 sensor Scrolling date and sensors data strings Reducing brigtness in darkness

Matrixclock gnm-19881-bsg, from the project README
From the project README

Main components on the Matrixclock gnm-19881-bsg

ATmega328P-AUDS18B20DS1307Z+MAX7219GNM-19881-BSG

Matrixclock gnm-19881-bsg bill of materials (BOM)

35 components, 16 distinct parts.

QtyPartRefs
1
ATmega328P-AU
U1
2
DS18B20
U2, U3
1
DS1307Z+
U4
4
MAX7219
U5, U6, U7, U8
4
GNM-19881-BSG
U15, U16, U17, U18
1
32768
Y1
1
PWR
J1
1
Li_3.3V
BT1
1
Buzzer
BZ1
1
MENU
SW1
1
INC
SW2
1
DEC
SW3
1
100.0
C1
5
0.1
C2, C3, C4, C5, C6
7
10k
R1, R2, R3, R7, R8, R9, R10
3
4k7
R4, R5, R6

Matrixclock gnm-19881-bsg design files

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

Matrixclock gnm-19881-bsg: common questions

What microcontroller does the Matrixclock gnm-19881-bsg use?

The Matrixclock gnm-19881-bsg is built around the ATmega328P-AU, from the AVR/Arduino family.

How big is the Matrixclock gnm-19881-bsg PCB?

The Matrixclock gnm-19881-bsg measures 191.8 × 48.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Matrixclock gnm-19881-bsg?

35 components, from 16 distinct parts. The full bill of materials is listed on this page.

Where can I download the Matrixclock gnm-19881-bsg design files?

From the WiseLord/matrixclock repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Matrixclock gnm-19881-bsg design in my own project?

The repository has no license, so all rights stay with WiseLord. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Matrixclock gnm-19881-bsg 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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