Gopher arcade

Gopher ARCADE

Gopher ARCADE is a simple ATTiny85 game console based on Armour Grade. I wanted to make some modifications and also improve my PCB making skills, so I recreated it from scratch since there were no source files, only gerbers.

There's a good collection of games written in Arduino/C: https://github.com/andyhighnumber/Attiny-Arduino-Games

My idea is to write some games in Go with TinyGo

Building

While is pretty straight forward to mount all the components, check out the build guide for the easiest order to do so.

Hardware

In the hardware/kicad folder you could find the KiCAD project with the used mods as well as the gerbers files in case you want to just order some PCBs without modifying them.

Parts list

Software

Code

The github.com/conejoninja/arcade/tinyssd1306 package has a simple driver for the display as the once in the drivers repository has a buffer and doesn't fit in the ATTiny85.

Board's pins are defined as follows:

const (
	P5 Pin = PB0
	P6 Pin = PB1
	P7 Pin = PB2
	P2 Pin = PB3
	P3 Pin = PB4
	P1 Pin = PB5

	LED          = P1
	BUTTON_LEFT  = P7
	BUTTON_RIGHT = P5
	SPEAKER      = P6
)

Flashing

Requirements

You need TinyGo and avrdude. Depending on your OS, you can check the installation instructions.

Connecting

Here you could find how to connect it to your USBasp probe.

You could use the 10-Pin connector to the ATTiny85:

You could use the 6-Pin connector to the ATTiny85:

Or if you don't want to take out/in the chip each time (you could damage the pins of the ATTiny), you could connect to the board directly as follows:

Flashing

By default the ATTiny85 runs at 1MHz, you can make it runs at 8MHz with the following command (this is only required once).

avrdude -p attiny85 -c usbasp -B 32 -U lfuse:w:0xE2:m

You could use TinyGo with USBASP and the target gopher-arcade to flash it as follows:

tinygo flash -size=short -target gopher-arcade  .

Not TinyGo

There's a good collection of games written in Arduino/C: https://github.com/andyhighnumber/Attiny-Arduino-Games

Note: some of then need a different board with analog input or more buttons.

Unfortunately I can not provide support on how to flash them (use the Arduino IDE *wink *wink) as it defeats the purpose of programming them with TinyGo!