MightyPi 1.1 - OrangePi Zero based console

[wojtekpil]

Hello! I just created my second handheld game console. Still work in progress but it's working fine right now.

Dimmensions:
H: 23.5 mm, W: 133 mm, L:74 mm

Features:
Custom shell inspired by gpd xd and ndsl,
ON/OFF Push button to power up and down,
Micro USB charging port,
Headphones Audio jack,
External SD card reader at the bottom,
2x back USB port,
1x front micro USB OTG port,
Analog joystick
1x D pad
10x buttons

Components:
☑ Orange Pi Zero 512 MB,
☐ 3.2 inch tft screen with ILI9341 controller,
☑ ADS1115 module board,
☑ set of screws,
☑ dc dc boost converter 5V,
☑ PSP1000 joystick,
☑ heatsink for CPU,
☑ tactile switches,
☑ NDSL buttons,
☑ power switch,
☑ silicone tactile switches,
☑ micro usb battery charger,
☑ 3.7v lipo battery (30x50x10mm, but slimmer would be better),
☐ 30mm slim speaker,
☐ small audio amplifier/ usb sound card,
☐ 3.5mm audio jack,
☐ standard usb port,
☐ small power silide switch,
☐ PCB components

The total cost is about $40.

Software:
For OS I recommend to use a RetroOrangePi distribution, a screen is driven by BBCP library https://github.com/bitbank2/BB-CP, and you can find a code for a matrix keyboard with joystick here: https://gist.github.com/wojtekpil/deaba ... 915e328f7a.











Thingiverse link and more info: https://www.thingiverse.com/thing:3090433

[Helder]

Are you using the attiny for the joystick or the ads1015?

[VeteranGamer]

really nice....

also nice to see a Orange Pi used.....

you've manage to get the screen working, and the controls (top marks)


and images of the actually setup to the OrangePi.....
(i appreciate that you've provided a schematic, but to noobs like me images are a lot better)



.

[wojtekpil]

Are you using the attiny for the joystick or the ads1015?

I an sorry for the confusion. Right now I'm using the ADS1115 with a ported WiringPi library. This is only because I "transplanted" hardware from my older project. I planned to do it using attiny for a few things, including a joystick, a battery measurement and a hall sensor. But it turned out to be a pretty expensive method, especially manufacturing a PCB wider than 10 cm. So right now I'm thinking about using an arduino nano board ($2) with the homemade PCB (photos from my thingiverse page).

[VeteranGamer]

I an sorry for the confusion. Right now I'm using the ADS1115 with a ported WiringPi library. This is only because I "transplanted" hardware from my older project. I planned to do it using attiny for a few things, including a joystick, a battery measurement and a hall sensor. But it turned out to be a pretty expensive method, especially manufacturing a PCB wider than 10 cm. So right now I'm thinking about using an arduino nano board ($2) with the homemade PCB (photos from my thingiverse page).

whats the exact pinouts you used for the OrangePi to the SPI screen

any images would be great....


a suggestion
(and this is coming from a noob)

why not have two boards manufactured, if you want to avoid paying more for boards larger than 10cm (100mm)
as most of the components and the business end of the board can be at one side...
and at the other end where really only for something like the buttons/dpad are needed can be connected via a ribbon cable

it will still look great....

.

[wojtekpil]

really nice....

also nice to see a Orange Pi used.....

you've manage to get the screen working, and the controls (top marks)


and images of the actually setup to the OrangePi.....
(i appreciate that you've provided a schematic, but to noobs like me images are a lot better)



.

It's quite messy inside:


For SPI screen you can look at this:

You connect lcd to SPI 1 pins: miso, mosi, sclk, cs0 and to two any unused gpios for DC and RESET. It works ok, but sometimes screen goes white. I suspect that's some kind of driver issue of SPI interface (as always with chinese boards, good hardware but crappy software). You can restart bbcp and everyting works fine again, but its annoying. I'm working on a workaround. I can be also problem with chinese lcd driver freezing at 30 Mhz. it happens rarely and only under heavy load, so it can wait until I buy bigger screen.

[ABH]

Thank you that’s really helpful !

[ThompsonTinkers]

I love seeing scratch built consoles here!