HardLabs

Attiny prototype board

ma-ha·attiny-prototype-board

Attiny prototype board layout, top view — open source AVR/Arduino board by ma-ha

About the Attiny prototype board

Attiny prototype board is an open source AVR/Arduino PCB design by ma-ha, published on GitHub under the MIT license. It is a 2-layer board measuring 160 × 100 mm, with 50 components from 25 distinct parts.

Its main chip is the ATtinyXX14-SS, from the AVR/Arduino family. Other key parts include the FTDI-Adapter. By type, the board carries 24 connectors, 7 switches, 7 resistors, 6 diodes and 2 ICs.

It belongs with the usb & debug tools and dev boards & breakouts designs in this gallery.

From the project

Simplifies circuit prototypying with the ATtiny1614

Simplifies circuit prototypying with the ATtiny xx14.

Features: - Beadboard (400 pins) - I/O - 4x LED - 3x Potentiometer - 2x momentary push button - 4x Switch - 2x 3.5 mm TRS socket - 4x banana socket - 2/3x I2C - 2x Serial - ATtiny XX14 - FTDI adapter (CH340E Micro USB Serial adapter) - UPDI programming - USB power - Serial debugging

Videos: - Build: https://youtu.be/CmCrIgkOkTU (no talking) - Description https://youtu.be/84AR5vEIgwg (German)

Attiny prototype board, from the project README
From the project README

Main components on the Attiny prototype board

FTDI-AdapterATtinyXX14-SS

Attiny prototype board bill of materials (BOM)

50 components, 25 distinct parts.

QtyPartRefs
1
FTDI-Adapter
U1
1
ATtinyXX14-SS
U2
4
Banana
J1, J2, J3, J4
3
tinyRight
J5, J7, J8
4
toPoti
J6, J15, J19, J22
4
banana
J9, J10, J11, J12
1
tinyLeft
J13
2
TRS35
J14, J18
1
toAudio
J16
1
USART
J17
1
GND
J20
1
toBtn
J21
1
VCC
J23
1
I2C
J25
1
1k
1k
3
R_POT
RV1, RV2, RV3
2
SW_SPDT
SW1, SW4
1
Switch UPDI
SW2
2
2x Switch
SW3, SW8
2
SW_Push_DPDT
SW9, SW10
Show 5 more
QtyPartRefs
5
LED
D1, D2, D3, D5, D6
1
D_Schottky
D4
4
1k
R1, R2, R7, R8
1
1k
R4
2
1.5k
R5, R6

Attiny prototype board design files

The KiCad project lives in the ma-ha/attiny-prototype-board repository on GitHub; these links point at the commit this page was built from.

Attiny prototype board: common questions

What microcontroller does the Attiny prototype board use?

The Attiny prototype board is built around the ATtinyXX14-SS, from the AVR/Arduino family.

How big is the Attiny prototype board?

The Attiny prototype board measures 160 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Attiny prototype board?

50 components, from 25 distinct parts. The full bill of materials is listed on this page.

Where can I download the Attiny prototype board design files?

From the ma-ha/attiny-prototype-board repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Attiny prototype board design in my own project?

Yes, under the terms of its MIT license, which ma-ha chose for the repository.

Can I test firmware for the Attiny prototype board 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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