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Forum Index : Microcontroller and PC projects : PicoMite 2 HDMI USB I2S board....
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| matherp Guru  Joined: 11/12/2012 Location: United KingdomPosts: 10965 |
Makes no difference. The issue is that the CMM2 is 4 layer and bigger. However, the cost difference isn't that great 10-off and the CMM2 is twice as fast as a RP2350 overclocked to the maximum and has 32Mb of high speed memory rather than 8Mb of low speed. Gerry is bringing the CMM2 up to the latest code level of the Pico. The big downsides of the CMM2 are VGA only but I'm thinking about including a TFP410 to do onboard conversion to HDMI and no USB HUB support so only a USB keyboard. This is the biggest issue. There is a new stack for the STM32 (USBX) which solves that but is a major enhancement. You could also put audio over HDMI using the ADV7513 rather than the TFP410 but that would also mean implementing I2S audio on the CMM2. |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 8564 |
Oh yeah, I forgot that the CMM2 is 4-layer. I once priced for a small 4-layer board and it was appreciably more expensive than 2. I've done CMM2 size 2-layer and the cost was pretty reasonable, but more expensive than 100mm square obviously. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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Grogster Admin Group  Joined: 31/12/2012 Location: New ZealandPosts: 9877 |
Definitely NOT!   MOST monitor or TV speakers are horrible - hence the use of a soundbar or a HT amplifier setup that you connect up so the sound does not go via the TV/monitor speakers. I was just having a bit of a dig at some(generally only new members) who would moan that the audio was not on the HDMI output. Not that it matters, cos you can easily make use of the DAC output, and couple that into your amp, if you need to go that far with the HDMIUSBI2S unit! Re: 4-Layer PCB's - they are very affordable now, provided you keep the size down. My RT2040 board that is a plop-in replacement for the WS2040-Zero module, is 4-layer, but cos it is very SMALL, it only costs about a buck a board, perhaps less. The bigger the PCB, the larger the cost, and that works for all number of layers.  Edited 2026-01-02 12:05 by Grogster Smoke makes things work. When the smoke gets out, it stops! |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9877 |
I love ALL of Dire Straits music, and Telegraph Road is an absolute classic. Tip: Ride Across The River. (from Brothers In Arms) I love songs with a good bass-line though. Smoke makes things work. When the smoke gets out, it stops! |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9877 |
BUMP!  Peter? Smoke makes things work. When the smoke gets out, it stops! |
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javavi Guru Joined: 01/10/2023 Location: UkrainePosts: 532 |
Hi! I ordered a dozen of these new WII connectors from AliExpress last year. https://www.aliexpress.com/item/1005006881729269.html https://www.aliexpress.com/item/1005006881729269.html And there are also several types of gamepads in the Wii format. |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 8564 |
Thanks. I have a few but when I got mine I could only find one supplier on AE and they took *ages* to arrive. I'm not sure if I would specify them for a new design now, although I'd much rather use them than the solution used on the CMM2. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10965 |
Measure it. Run a benchmark like grainbench with and without an mp3 playing |
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