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Forum Index : Microcontroller and PC projects : PicoGAME LCD: Handheld videogame
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thwill Guru  Joined: 16/09/2019 Location: United KingdomPosts: 3863 |
Hi folks, With a bit of luck my YouTube video of the PicoGAME LCD (aka "Bintendo Tomboy") is now up: https://www.youtube.com/watch?v=jB5hF2ZWHrA And there is a github page: https://github.com/thwill1000/pico-game-lcd And earlier discussion of this project happened in this thread: https://www.thebackshed.com/forum/ViewTopic.php?TID=15402 Best wishes, Tom Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 3585 |
Nice Tom. Really well build. And the game seems very plable, although I may not be ver good at it... Thanks for showing what mmbasic can do IN BASIC. Volhout PicomiteVGA PETSCII ROBOTS |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 5768 |
That's really good, Tom. Very encouraging. :) Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 3863 |
I'm working on the audio for the Mk2 using a PAM8403 and have two questions: 1. Where do I put the variable resistor / volume control? a. Between the Pico and filter b. Between the filter and amp c. Between the amp and speaker My guess would be (c) 2. This really only needs mono sound, can I just leave the "right" input and output of the PAM8403 flapping in the wind or do they need grounding (or something else).  Thanks, Tom Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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Strider Newbie  Joined: 13/03/2023 Location: United StatesPosts: 15 |
These are the kinds of projects I like. Very cool! I'll be following it!  A classic geek! Expert at nothing, professional hobbyist! My Projects My Social |
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Turbo46 Guru Joined: 24/12/2017 Location: AustraliaPosts: 1595 |
A volume control pot normally goes before the amplifier. See this for an example. Putting it between the amplifier and the speaker would have the amplifier operating at full power continuously and the volume control pot would have to handle the full power output of the amplifier. Not good. I would ground the spare input via a 10k resistor. Bill Keep safe. Live long and prosper. |
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stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 1655 |
I did a not thought out board and going to do a tron game but using touch buttons. no wires under the board.  |
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| Turbo46 Guru Joined: 24/12/2017 Location: AustraliaPosts: 1595 |
Regarding the spare amplifier, I have no experience with digital amplifiers but I do seem to recall that some analogue amplifiers could be unstable if a load was not connected. Maybe connect a (say) 100 ohm resistor across the speaker terminals as a precaution. Wattage shouldn't matter. Bill Keep safe. Live long and prosper. |
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| thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 3863 |
Thanks Bill, my first tests with the PAM8403 were not successful, lots of distortion, noise and clicking, probably not helped by it all being lashed together by jumper leads and breadboard. I need to spend some more time on it. Best wishes, Tom Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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| thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 3863 |
Hi folks, I've still got a little titivating to do (wire up SD card, touch, reset button) but the Mk2 prototype is up and running, many thanks to everyone who advised me on the audio side and to Peter for the firmware changes to PLAY SOUND: https://www.youtube.com/watch?v=7Is_RnQhM64 Here are some pictures with its older, bigger brother:     Best wishes, Tom Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 1655 |
Looks tidy from the top... er.. each to their own with wiring, don't they make a wire wrap tool for these boards? My 5 switch "analaogue" boards arrived. Must test but working on mcp23017 i2c port expander which is working ok with code from phil99.  |
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| thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 3863 |
I did look at other techniques a couple of years ago. Wire-wrap pins are pretty expensive and I very much doubt I would be able to hack prototypes together, or pull them apart quite so quickly if I was using wire-wrapping. I quite liked the sound of using a wiring pencil with solderable enamel wire, but all I have ever managed to create with that is a burnt mess, not sure if that was because the wire was not as advertised or because I was incompetent. I've settled on the pictured as an adequate protoypting technique within my capabilities, if I need anything more then I'll be learning to make PCBs. EDIT: as to veroboard, of which I do have a big slab, I found it to be inflexible when prototyping on the fly (i.e. you need to do more up-front layout), and even if you do that planning, you require more real-estate because of the fixed tracking. Best wishes, Tom Edited 2023-05-15 01:02 by thwill Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 1655 |
In Wales tidy means good :) I test on bread board and it looks like a birds nest. You can get vero that looks like bread but as with bread board some tracks don't have enough holes. ps2 and vga sockets don't fit vero or bread board but I just use glcd boards and I suppose there's similarities my boards are just for general testing not specifically a game machine but must admit a few projects are games. Using invisible touch area for u,d,l,r isn't perfect hence the button board. Have you tried touch for game control? |
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| thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 3863 |
Thanks. My antecedents are pretty Welsh, my full name Thomas Hugo Williams (lay it on thick with a "valleys" accent) is a pretty heavy hint. My reply was regard to you being "unimpressed" by my wiring ... which is fine, I'm not massively impressed either. No, because it isn't what I want; I like buttons, the clickier the better, touch is the spawn of the mobile phone. Best wishes, Tom Edited 2023-05-15 01:34 by thwill Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 5768 |
I did a CP/M computer using a wiring pencil.   And a special computer just for Stan. Well, it's just about a computer. More of a CPU really. I replaced chunks of logic with PIC chips (but they only work as multiple logic gates) to keep the breadboard size down to something manageable. It's a bit underpowered for Tom's project, unfortunately.  Edited 2023-05-15 01:44 by Mixtel90 Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 1655 |
Far out groovy! serious. well the bread board stuff :) I can relate to it. |
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| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 1655 |
I want to do "missile command" on 320x240 ili9341 and use touch for the tracker ball. I wrote some picaxe code which was a line function but dunno where it is. It was the line function but pixel at a time, ideal for this game. I'll sort it. |
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| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 1655 |
quote My antecedents are pretty Welsh, You're lucky, most are ugly |
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| lizby Guru Joined: 17/05/2016 Location: United StatesPosts: 3027 |
Here's a version of VegiPete's Missile_Command-like "In Renewed Defense of the Green Hills" in MMBasic for the Armmite F4: Green Hills (originally for the CMM2). I speculated that it would be too slow on the Picomite, but things have been speeded up since then, so maybe it would translate over. But the F4 uses a parallel interface for the display, so maybe the Picomite's SPI interface would be too slow. Maybe the VGA version, if the resolution is adequate. ~ Edited 2023-05-15 10:45 by lizby PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed |
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| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 1655 |
Hi lizby. imho the ili9341 using mmbasic is not "slow". "Missile command" is just the Bresenham's line algorithm but pixel at a time and the explosions using circles I've done before. I worked in an arcade games factory in the 70's and there was a run of atari missile command machines. think they used 6502 and a raster scan crt not x-y monitor like asteroids and battle zone. The tracker ball was new but just 2 ir led and sensor with slotted discs driven by the ball. Before ball ps2 mice. It would work nice with a touch screen as an alternative to buttons/joypad. |
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