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Forum Index : Microcontroller and PC projects : PicoMiteWeb alphas - It had to be done
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Mixtel90 Guru  Joined: 05/10/2019 Location: United KingdomPosts: 6812 |
But you can have 8 wired controllers on a single I2C bus if you put a MCP23008 in each. :) Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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lew247 Guru Joined: 23/12/2015 Location: United KingdomPosts: 1702 |
Huh? I really don't get that at all I was talking about making it bluetooth wireless so you don't have to have port expanders or wires to every controller Edited 2023-04-02 20:58 by lew247 |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9139 |
I will not be implementing bluetooth - too big to work with wifi and in any case still in beta Edited 2023-04-02 21:02 by matherp |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6812 |
But we can already have two wired SNES controllers - not one. I was simply pointing out that the limit isn't one. :) The PicoGAME has two ports that can be Atari joysticks or SNES controllers. My comment about I2C merely points out that even two isn't the limit if you'll accept wires, and it's very cheap to do. 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: 4047 |
Though good luck finding a clone SNES controller that (a) is actually a SNES controller (and not a NES controller in a SNES shell) and (b) works at 3.3V. I'm fairly sure the originals would work though you'd have to replace their proprietary plugs with DB9 - you probably shouldn't do that butchery though. Compatible clone NES controllers are easier to find, but still a bit of a crapshoot. I just received another one from AliExpress which was advertised as cosmetically different to any I had previously tested. When it arrived it was not the one in the photo but identical to a working one that I already have (and which I have never seen advertised with a correct photo) - though I have yet to test this latest  .Even using the NES not-SPI protocol I believe you only need 3 I/O pins (latch, clock, data) for the first controller and one extra pin (data) for each subsequent controller. I look forward to enjoying it soon then  .Best wishes, Tom Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9139 |
Not in this case. I've looked at it and incorporating it would completely compromise MMBasic |
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| thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 4047 |
I was joking Peter, but you have to admit you have form. Best wishes, Tom Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6812 |
NES hardware controllers: latch, clock data 1-8 for 8 controllers = 10 pins I2C hardware controllers: sda scl number of controllers is limited by the number of possible addresses. The MCP chip has 8. = 2 pins I rest my case m'lud. :) I have a little project to play with. I have onee of those cheap analogue joysticks and the idea is to use it with a quad comparator to produce Up, Down, Left and Right digital signals that can be converted to I2C. As these joysticks are less than 2 UKP and are self-centering and include a switch suitable for menu/start or something it might make an interesting controller. if you add a fire button. I'm just a little uncertain about the lack of tactile feedback, but sensitivity is easily adjustable by changing a single resistor (could be a preset) which adjusts the dead band. 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: 4047 |
If only I could find a 100% reliable source of NES controllers I'd risk a day in court with you; given that you will have to custom build / hack your controllers  .If you are building custom controllers for general purpose "8-bit" gaming it really is worth having 4 buttons (A, B, Start, Select). The Japanese designers of the NES knew what they were doing; that is enough to play Elite on the NES without reaching for a keyboard, unlike the 1 or 2 buttons joysticks for the 8-bit computers. Best wishes, Tom Edited 2023-04-03 00:16 by thwill Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6812 |
That's fine. You have 8 bits available. Four direction, one joystick switch (Start) and three buttons. :) The most difficult thing is probably getting it to mount in a case. The depth of the joystick is quite a lot more than the buttons so you end up with two PCBs or a split level one. I've not figured that out yet. You *can* buy the bare joystick module separately and you *can* find custom-made knobs for them but the cost is way more than a ready built module on a PCB. Edited 2023-04-03 00:30 by Mixtel90 Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| lew247 Guru Joined: 23/12/2015 Location: United KingdomPosts: 1702 |
And if someone used the HC-42 BLE5.0 module (very similar to HC-12 but bleutooth /HC-42-01-750x750.jpg) you could have any or all these controllers working |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6812 |
Interesting module. I've not spotted how you would work with one master and multiple slaves though. If that could be done it might be ideal as it runs in COM mode. You don't need bluetooth support in MMBasic then. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| aFox Regular Member  Joined: 28/02/2023 Location: GermanyPosts: 76 |
Hm The latency over Wifi is remarkably high. I think many would prefer Classic Bluetooth instead of Wifi. Especially in conjunction with wearable sensors and smartphones. It would be nice to hear: "Bluetooth maybe later but without WiFi, because no space in memory." Personally, my focus is on wearable sensors for medical accelerometers. ESP32 and Pico with additional BT module build too big. Gregor Edited 2023-04-03 04:57 by aFox |
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| lew247 Guru Joined: 23/12/2015 Location: United KingdomPosts: 1702 |
I don't know if it will work with multiple slaves but I have the Datasheet Extract from it  HC-42 english datasheet.pdf Edited 2023-04-03 05:27 by lew247 |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6812 |
It may as well be in Chinese for me. I know nothing of Bluetooth, I just have some stuff that uses it. :) Unless it has multiple slaves there's no point. You *can* include the device address in the protocol, but you are going to have to scan every controller in each time period (could be during frame flyback, but there's a lot of other stuff has to be done then too). Having a protocol that includes device addresses is more data to send, even if there are no ACK signals or error handling. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6812 |
I can fit my I2C design into one of my favourite 90mm x 70mm x 28mm cases, unless I've missed something. One main PCB, the joystick mounts on 2mm washers and the buttons PCB on 3off 6mm spacers. I've done a bit of calculation and a preset pot allows a decent sensitivity adjustment. Just wondering whether to use RJ11 4-pin connectors (the sort used for telephones). A socket will fit and it makes leads easy to change. It does mean slotting out the side of the box though. Unless I run an interrupt wire it only needs 4 wires. Edited 2023-04-04 00:16 by Mixtel90 Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| Andrew_G Guru Joined: 18/10/2016 Location: AustraliaPosts: 847 |
Hi, I'm not sure if this is the correct thread (sorry if not). Two quick questions if I may: 1) for the ESP8266 the "AT+CWLAP" sentence gave a list of available SSIDs. Is there an equivalent for the WebMite? (any way of gauging the signal strength of each?); 2) connecting pin #30 ("Run") to ground is suggested as a 'reset'. Is that OK for the Pico or does it risk any problems? Failing that, is the use of WATCHDOG better? Cheers, Andrew |
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phil99 Guru Joined: 11/02/2018 Location: AustraliaPosts: 2140 |
It seems "RUN" is just a shorter term for "Not Reset" - low to reset, high to run. PS For stability connect RUN to 10k to 3V3 and a 10nF to 100nF from RUN to ground. |
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TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6102 |
try WEB SCAN I think it is still the command. I haven't tried it recently. Jim VK7JH MMedit MMBasic Help |
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| Andrew_G Guru Joined: 18/10/2016 Location: AustraliaPosts: 847 |
Phil - Thanks I'll give it a try. Jim - thanks too. It works both from the console and within code. It is described on the first page of this thread (which I've read many times - sorry). Back to the chocolate and buns. Andrew |
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