HardLabs

Diu

0x007E·diu·pcb/DIU.kicad_pcb

Diu PCB layout, top view — open source AVR/Arduino board by 0x007E

About the Diu PCB

Diu is an open source AVR/Arduino PCB design by 0x007E, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 143.5 × 68.6 mm, with 253 components from 37 distinct parts.

Its main chip is the ATtiny1606-S, from the AVR/Arduino family. Other key parts include the LD1117S33TR, FT232RL, 74HC595 and MCP7940N-xMS. By type, the board carries 99 resistors, 91 diodes, 22 capacitors, 18 connectors, 15 ICs and 4 switches.

It belongs with the usb & debug tools designs in this gallery.

From the project

Digital (Analog) Clock

The DIU project is based on a pcb with an ATtiny1606 a RTC MCP7940 a USB/UART bridge FT232RL and a set of 74HC595 shift register. It can be used to display time and date on 84 LEDs that are mounted in 3 circles to the top pcb. The clock itself can be setup over UART and a terminal software (e.g. TeraTerm).

There are two parts of the hardware. The pcb and the housing of the DIU. The pcb is created with KiCAD and the housing with FreeCAD. The software is programmed with Microchip (Atmel) Studio. All files are built with github actions so that they are ready for a production environment. The…

Diu, from the project README
From the project README

Main components on the Diu

LD1117S33TRFT232RLATtiny1606-S74HC595MCP7940N-xMS

Diu bill of materials (BOM)

253 components, 37 distinct parts.

QtyPartRefs
1
LD1117S33TR
U1
1
FT232RL
U2
1
ATtiny1606-S
U3
11
74HC595
U4, U5, U6, U7, U8, U9, U10, U11 +3
1
MCP7940N-xMS
U15
1
2N7002E
Q1
1
32.768kHz
Y1
2
Conn_01x02_Pin
J1, J2
1
Conn_01x03_Pin
J3
1
USB_OTG
J4
1
Conn_01x03_Socket
J5
4
Conn_01x21_Pin
J6, J8, J10, J13
4
Conn_01x21_Socket
J7, J9, J11, J12
2
Conn_01x01_Socket
J14, J17
2
Conn_01x01_Pin
J15, J16
1
Battery
J18
1
Buzzer
BZ1
1
350m
F1
4
SW_SPST
SW1, SW2, SW3, SW4
84
LED
D1, D2, D3, D4, D5, D6, D7, D8 +76
Show 17 more
QtyPartRefs
6
LED
D85, D86, D87, D88, D89, D90
1
MBR0520LT1G
D91
2
100n
C1, C32
1
1u
C2
1
10u
C3
2
47u
C4, C6
13
100n
C5, C7, C8, C9, C10, C18, C19, C20 +5
1
10u
C11
2
22p
C30, C31
84
68
R1, R2, R3, R4, R5, R6, R7, R8 +76
4
100
R85, R86, R92, R93
2
270
R87, R88
2
1k
R89, R90
2
0
R91, R94
1
330k
R95
2
1k
R97, R98
2
10k
R99, R100

Diu design files

The KiCad project lives in the 0x007E/diu repository on GitHub; these links point at the commit this page was built from.

Diu: common questions

What microcontroller does the Diu use?

The Diu is built around the ATtiny1606-S, from the AVR/Arduino family.

How big is the Diu PCB?

The Diu measures 143.5 × 68.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Diu?

253 components, from 37 distinct parts. The full bill of materials is listed on this page.

Where can I download the Diu design files?

From the 0x007E/diu repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Diu design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Diu 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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