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Forum Index : Microcontroller and PC projects : PicoMiteHDMIBTH query
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Mixtel90 Guru  Joined: 05/10/2019 Location: United KingdomPosts: 9253 |
I assume this firmware is compatible with the OPTION CYW43 PINS system? I'm designing a new board that is based on bluetooth as it's main system but has the option of using Pico 2 + RM2, Pico 2W or Pimoroni Pico Plus 2 W. Obviously the Pico 2 (or clones) don't have the standard pins for a wi-fi module. Mick Zilog Inside! nascom.info for Nascom & Gemini |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 9253 |
COMPETITION I couldn't think of a snappy name for this board so I'm open to suggestions! Get your suggestions in before Friday 09:00 AM GMT. The winner gets to see their suggestion on the PCB and a free unpopulated board posted to them. Postage will be by international standard first class post. Board details Same size as Elemento but different fixing centres Interesting power button circuit using mosfets Virtually all SMD soldering (1206), including the HDMI connector (sorry, not much through-hole) Will accept modules as listed in original post module's USB connector accessible from front I2S audio mini RTC, with space for CR2032 holder micro SD card CP2102 module for USB-C and console connection headphone socket on front (fed from I2S via resistors) no space for GPIO as such, but GP28 on a pin and two QWIIC sockets, one on each I2C. You will have a choice of either waiting until I have a prototype doing something or taking a risk. :) Mick Zilog Inside! nascom.info for Nascom & Gemini |
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Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 6200 |
Mick, When you are using BT for everything (mouse, keyboard, sound), why is there a USB-C console through CP2102 ? You can use the Pico CDC port. That will make a very simple design. HDMI, BT, no I2S sound, no CP2102, no USB hub, only SD card. But BT eats some RAM, so it may be a good idea to base it on a module that also has PSRAM. And yes, you can still have some IO pins on headers. Call it FUTURA (no more PS2/USB devices, all BT or BTLE). Would be a good device for living room (playing games on the couch) with BT keyb/mouse. Better even when sound would be on HDMI. Volhout Edited 2026-10-27 22:10 by Volhout PicomiteVGA PETSCII ROBOTS |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 9253 |
This particular board isn't designed like that. I agree that a truly minimalist system can be built, but this isn't it. :) This is specifically designed for the HDMIUSB firmware, running on any of the 40-pin Pico 2 family. This starts up after installation using the USB port in Host mode (I assume!) so you will need the serial console to set HDMI PINS and CYW43 PINS. They can't follow the standards for the RP2350B chip - not enough pins. You can get PSRAM by using the Pimoroni (or Waveshare?) module (when it's in stock) but otherwise you can't have it on a (unhacked) 40-pin module. Oh, if you use a processor module that is flat on the bottom (like the Pico 2) you can surface mount it. . Edited 2026-10-27 22:35 by Mixtel90 Mick Zilog Inside! nascom.info for Nascom & Gemini |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 12082 |
Don't understand what you are trying to achieve with this one. Your modular PC3 does everything and can run pretty much any of the firmware variants |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 9253 |
It started with trying to get something like the PC3 into the Elemento case. I have these crazy ideas sometimes. :) Elemento lets you use different 40-pin modules. One of its failings is the height of the RTC module. So, basically, I've stripped out the USB system and VGA, added the facility to use any 40-pin processor with a HSTX and optimised for surface mount in most cases. Just waiting for my PC3x Version 2 boards so I was killing time. :) Mick Zilog Inside! nascom.info for Nascom & Gemini |
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vegipete Guru Joined: 29/01/2013 Location: CanadaPosts: 1186 |
Elementwo - it's version 2, so to speak? Or, Elemen2. Visit Vegipete's *Mite Library for cool programs. |
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