HardLabs

Tau2 Breakout

gregdavill·advent-calendar-of-circuits-2020·syzygy-flir-tau2/kicad-src/syzygy-flir-tau2.kicad_pcb

Tau2 Breakout layout, top view — open source AVR/Arduino board by gregdavill

About the Tau2 Breakout

Tau2 Breakout is an open source AVR/Arduino PCB design by gregdavill, published on GitHub. It is a 4-layer board measuring 45 × 78 mm, with 32 components from 19 distinct parts.

Its main chip is the ATTINY44A-MMH, from the AVR/Arduino family. Other key parts include the TPS2061CDBVR and INA219AIDCNR. By type, the board carries 14 capacitors, 10 resistors, 4 connectors, 3 ICs and 1 inductor.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

1 circuit board design a day for 31 days.

SYZYGY is an FPGA expansion standard for medium to high speed interfaces. Learn more and check out the specifications here: https://syzygyfpga.io/

An addon for the Tau2 LWIR core from FLIR. Both LVDS and CMOS channels are connected through to the SYZYGY connector along with the UART configuration channel.

Tau2 Breakout, from the project README
From the project README

Main components on the Tau2 Breakout

TPS2061CDBVRATTINY44A-MMHINA219AIDCNR

Tau2 Breakout bill of materials (BOM)

32 components, 19 distinct parts.

QtyPartRefs
1
TPS2061CDBVR
TPS2061
U1
1
ATTINY44A-MMH
ATtiny44A-MMH
U2
1
INA219AIDCNR
INA219AxDCN
U3
1
QTE-020-01-F-D-A
SYZYGY-STD
J1
1
DF12(5.0)-50DP-0.5V(86)
Conn_02x25_Odd_Even
J2
1
TagConnect
J3
1
Conn_Coaxial
J4
1
22uH
L1
6
CL05F104ZO5NNNC
0.1uF
C1, C2, C5, C8, C11, C13
4
CL05F104ZO5NNNC
10uF
C3, C6, C12, C14
2
120uF
C4, C7
1
CL05B104KP5NNNC
0.1uF
C9
1
CL05A105KP5NNNC
1uF
C10
2
RC0402JR-0710RL
10k
R1, R2
2
RC0402JR-0710RL
10R
R3, R5
1
0805W8F100LT5E
100m
R4
2
RC0402JR-0710RL
DNP
R6, R7
2
RC0402JR-0710RL
0R
R8, R9
1
RMCF0402FT10K0
10K
R15

Tau2 Breakout design files

The KiCad project lives in the gregdavill/advent-calendar-of-circuits-2020 repository on GitHub; these links point at the commit this page was built from.

Tau2 Breakout: common questions

What microcontroller does the Tau2 Breakout use?

The Tau2 Breakout is built around the ATTINY44A-MMH, from the AVR/Arduino family.

How big is the Tau2 Breakout?

The Tau2 Breakout measures 45 × 78 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Tau2 Breakout?

32 components, from 19 distinct parts. The full bill of materials is listed on this page.

Where can I download the Tau2 Breakout design files?

From the gregdavill/advent-calendar-of-circuits-2020 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Tau2 Breakout design in my own project?

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

Can I test firmware for the Tau2 Breakout 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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