I recently made myself a Pocket PiGRRL based on Adafruit’s tutorial – it really is a great machine and a brilliant learning experience.
There was one aspect though that I didn’t like, the speaker hisses, not particularly loud and when your playing a game its not that noticeable but if you have got the volume down it is really annoying. Its all down the Raspberry Pi’s noisy analogue audio out so there isn’t a great deal you can do to clean it up.
My solution was to add the ability to shutdown the amp, effectively muting it when I didn’t want any sound.
Pocket PiGRRL Pack Build your own Pi Game Emulator! – CASE NOT INCLUDED: For all those who feared their Game Boy days would be but a memory, worry no more! The Game Boy may be dead, but with this pack you’ll have a chance to revive it in style. We’ve collected all the right parts so you can assemble the guts of your very own DIY GameGRRL – a portable Raspberry Pi running MAME, NES, Atari2600 and other fine emulators (via RetroPie/EmulationStation). Read more.
Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.