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Doktorn

Newbie

Joined: 09/07/2019
Location: Sweden
Posts: 37

Posted: 01:15pm 04 Jul 2026

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Is the Waveshare Core2350B0 suitable for a budget/test Pico Computer 3, considering the PSRAM pin configuration?

panky

Guru

Joined: 02/10/2012
Location: Australia
Posts: 1132

Posted: 01:18pm 04 Jul 2026

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Bryan, I will take one please - pm me with payment requirements.
Doug.

... almost all of the Maximites, the MicromMites, the MM Extremes, the ArmMites, the PicoMite and loving it!

mozzie
Guru

Joined: 15/06/2020
Location: Australia
Posts: 403

Posted: 01:52pm 04 Jul 2026

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G'day Bryan,
Cheers mate, I will happily put my name on 1.

Had meant to ask you if you wanted one if Grogster was doing a batch but you have beaten me to it.

Let me know payment details etc.

Going to be busy next few days, will keep an eye on here though

Regards, Lyle.

Bryan1

Guru

Joined: 22/02/2006
Location: Australia
Posts: 2155

Posted: 10:15pm 04 Jul 2026

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Well guy's thinking about it I will only need one of these boards so there is one left for a member

Regards Bryan

scruss
Senior Member

Joined: 20/09/2021
Location: Canada
Posts: 105

Posted: 06:47pm 05 Jul 2026

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lizby said If anyone else in Canada is interested, one more will be available. Cost is going to be about C$50 plus Canada Post shipping.

Is that one still available, please? I'm in Toronto.

lizby
Guru

Joined: 17/05/2016
Location: United States
Posts: 3811

Posted: 09:08pm 05 Jul 2026

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scruss said Is that one still available, please? I'm in Toronto.

Yes They're through customs now. That will account for all of them.

~
Edited 2026-07-06 09:02 by lizby

PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on FOTS

lizby
Guru

Joined: 17/05/2016
Location: United States
Posts: 3811

Posted: 05:55pm 08 Jul 2026

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The boards arrived. JLC did not have the RM2 wifi module or the PSRAM, so those are missing. I soldered PSRAM on the two I want to keep, and it is recognized.

I've PMed the three people in Canada who expressed interest. I'm ordering the Wifi part from Digikey.ca. and can order extra. In my PM, I misspoke--the RM2 Wifi part is $4, not $7.

Shipping was stiff: $50USD and then $43CAD at customs (including Canadian tax and FedEx's handling fee).

Lance (lizby)

Looking sweet.

PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on FOTS

LeoNicolas

Guru

Joined: 07/10/2020
Location: Canada
Posts: 595

Posted: 05:59pm 08 Jul 2026

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lizby said Ok, boards ordered. Shipping was stiff: C$75 (saying I'm in a "remote area"). There may be customs duty.

If anyone else in Canada is interested, one more will be available. Cost is going to be about C$50 plus Canada Post shipping.

okwatts--yes, I'll include the RPZ baseboard and all addon PCBs--gratis.

lizby

I have sent you a DM. I need to pay you for the board

okwatts
Regular Member

Joined: 27/09/2022
Location: Canada
Posts: 76

Posted: 06:49pm 08 Jul 2026

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Hi Lizby
PM sent, looking forward to this.

lizby
Guru

Joined: 17/05/2016
Location: United States
Posts: 3811

Posted: 02:36pm 09 Jul 2026

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Leo--I didn't get your DM (PM). Please send again or let me know here whether you want me to order the radio module and/or PSRAM. Then I'll figure out about shipping.

Scruss--also wondering if you want radio module and/or PSRAM.

PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on FOTS

matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 11636

Posted: 03:33pm 09 Jul 2026

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dxf files for the end-plates are unchanged from the reference board
Edited 2026-07-10 01:35 by matherp

lizby
Guru

Joined: 17/05/2016
Location: United States
Posts: 3811

Posted: 04:02pm 09 Jul 2026

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I've succeeded in flashing 4 of the 5 boards, but for the 5th one, a drive doesn't come up. As with the others, "Disable" toggle is down, power button is off (out), boot is pressed. I've tried a different micro-USB cable. I've tried over a dozen times with 3 different USB ports on my laptop.

Any suggestions as to what to try?

PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on FOTS

Grogster

Admin Group

Joined: 31/12/2012
Location: New Zealand
Posts: 9995

Posted: 04:11am 10 Jul 2026

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Sorry folks - a bit late to the party on this one.

Been very busy the last few weeks at work, and simply no time to play with the latest offering.

I know Bryan has already ordered some boards, but I will be ordering five.
I will also be looking at doing some gerbers for the front/rear panels.
This won't happen overnight, as I am still quite busy, but I can at least get some boards ordered.

Is there an alternative source for the SDRAM chip, if I need to manually fit these if JLC are still out of stock on them?

Smoke makes things work. When the smoke gets out, it stops!

Grogster

Admin Group

Joined: 31/12/2012
Location: New Zealand
Posts: 9995

Posted: 04:41am 10 Jul 2026

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I also had to change the 10k 0402 resistors - JLC said they had no stock.
I just followed my nose, and used their parts selector, to choose another 10k 0402 resistor that they DID have plenty of.

JLC also moaned VERY SPECIFICALLY about the design NOT using the approved 2350 oscillator design - Peter: care to comment?

I just ordered anyway, as I expect your design is fine in that area, but obviously some custom designs that DON'T use the RP recommended oscillator design have caused problems for some people, or JLC would not throw up that pop-up.

Smoke makes things work. When the smoke gets out, it stops!

Bryan1

Guru

Joined: 22/02/2006
Location: Australia
Posts: 2155

Posted: 08:30am 12 Jul 2026

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Well I just looked at my bank account and that figure I put p before was way off the price

So each board will be $75 each with shipping so guy's that have said they want one please confirm whether you still want one.

Regards Bryan

mozzie
Guru

Joined: 15/06/2020
Location: Australia
Posts: 403

Posted: 01:07pm 12 Jul 2026

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G'day Bryan,
Thanks for the update, $75.00 AUD + shipping in AUS sounds about right, I'll still put my name on 1 if that's ok.

PM me with details when you need payment, stick a few bucks on to cover the CNC PCB's as well, I might be using both if all goes to plan

Regards, Lyle.

Bryan1

Guru

Joined: 22/02/2006
Location: Australia
Posts: 2155

Posted: 01:07am 13 Jul 2026

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Just checked the JLCPCB shipping and looks like the boards will be here this week as they are in transit from Adelaide

terekgabor
Senior Member

Joined: 02/01/2026
Location: Hungary
Posts: 108

Posted: 09:33am 13 Jul 2026

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Hello,

if somebody has spare board for sale, or want to order one more I am interested to spare costs for example.
I am from Hungary.

G@bor

toml_12953
Guru

Joined: 13/02/2015
Location: United States
Posts: 685

Posted: 09:41am 14 Jul 2026

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I know it sounds silly but where are GP8 and 9? I'd like to connect a serial device to COM2 but I can't find the pins.

dddns
Guru

Joined: 20/09/2024
Location: Germany
Posts: 874

Posted: 10:00am 14 Jul 2026

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GP8 and GP9 go to a CH340 and this is connected to a USB-C socket. See schematic in first post
Edited 2026-07-14 20:30 by dddns

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