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ATtiny85 - TINY CHEAP VERSATILE ARDUINO COMPATIBLE

PCB for ATtiny85 microcontroler, that you can leave i your projetct with no regret of losing expensive Arduino board.

Simon
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With the fraction of the Arduino price this small, but powerful uC ATtiny25/45/85 can be leave wherever you want. Many project can be simply shrink down to fit in to ATtiny85 with 8k of flash memory.

PCB fit to 8 Pin IC's like ATtiny13, ATtiny15 ,ATtiny25, ATtiny45, ATtiny85.


What makes this PCB so cool is that it is full reversible SMD and THT. It mean that depending on your soldering skills you can use one of the two options, SMD on one side and THT on the other side. You can also mixed both version depending on components in your warehouse.

You can can make cool things with ATtiny85 PCB like a wearable display, playing with OLED SSD1306, driving servo and many others.

This small PCB fit in to the bread board, so you can develop your idea at first. And when you are ready just leave it in your final project because it is so cheap.

What is nice about ATtiny25/45/85 PCB that it have extremely narrow design that you can use 4 pins on each side of the bread board. For compare you can see how many space do we lose with Arduino Micro.

What makes this PCB so cool is that it is full reversible SMD and THT.

It mean that depending on your soldering skills you can use one of the

two options, SMD on one side and THT on the other side. You can also

mixed both version depending on components in your warehouse.

ATtiny85 running OLED display SSD1306 via I2C interface.

Standard 6 pin ISP connector allowed you to program in easy way ATtiny25/45/85.

It has a really tiny size.

ATtiny85 running 2 servos.


Tech spec

  • size: 33.5 x 11.2 mm
  • package: THT DIP8 ATtiny25/45/85
  • package: SMD SO08 ATtiny25/45/85
  • reset switch, top and bottom side.
  • reversible components THT - top side, SMD - bottom side
  • standard 6 pin ISP programming connector.
  • 2 output connector with access for all pins of uC
  • schematic

Running campaing you will find on Indiegogo.

  • 1 × PCB ATtiny25/45/85
  • 1 × DIL8 socket
  • 1 × ATtiny85-20PU (DIL8)
  • 1 × Reset switch
  • 1 × Reistor 10K

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Discussions

danjovic wrote 03/10/2017 at 23:42 • point

Ok! Tnanks! Aren't your pins 3 and 4 exchanged when comparing with the ATTiny?

  Are you sure? yes | no

danjovic wrote 03/10/2017 at 22:37 • point

The dual mode PCB was a neat idea. Yet I think it is possible to use the same side of the board for both SMD/Conventional components placement.

  Are you sure? yes | no

Simon wrote 03/10/2017 at 22:42 • point

Thanks for comment and like this project :)

You have a right sure it is possible. That would enlarge PCB I think. 

One of the target was also possibility to use 4 pin on each side of the breadboard.

Have a look on this picture where you have breadboard and Arduino Micro.

  Are you sure? yes | no

danjovic wrote 03/10/2017 at 22:57 • point

As soon as I have a spare time I will give it a try. Maybe it is possible to keep the same size. You are using the resistor as a pullup for the Reset and a decoupling capacitor on Vcc, right?

  Are you sure? yes | no

Simon wrote 03/10/2017 at 23:02 • point

Yes, pullup for reset and VCC on power supply. Here is the schematic: http://www.awesomepcb.com/wp-content/uploads/2016/01/Atmega-ATtiny85_narrow_PCB_REV02-Schematic.pdf I tested this solution and working well.

  Are you sure? yes | no

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