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Forum Index : Microcontroller and PC projects : A new Pico PCB for V5.09.00 - comments

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crazycloud
Newbie

Joined: 20/08/2023
Location: United States
Posts: 40
Posted: 08:51pm 17 Feb 2024
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Great! I'm in. I already have the displays.
 
JohnS
Guru

Joined: 18/11/2011
Location: United Kingdom
Posts: 4034
Posted: 07:09pm 18 Feb 2024
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  matherp said  As before, I'll order 5. If they work OK and anyone wants one then the cost as pictured will be about £23 + my shipping cost (£1.95 to the UK and £3.25 to Europe).

Does that price include the omitted components?

If yes, I'd ike one please.

John
 
matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10201
Posted: 07:35pm 18 Feb 2024
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  Quote  the cost as pictured will be about £23 + my shipping cost (£1.95 to the UK and £3.25 to Europe).


So no.
 
matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10201
Posted: 03:27pm 29 Feb 2024
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The PCBs have arrived and electrically they work perfectly
Physically they are poor to rubbish

The concept is a single board computer with ultra-fast graphics

It supports any of the standard 16-bit parallel TFT displays and includes the usual RTC and audio (including stereo amp).

To keep costs down I left most of the non-surface mount off the build by JLC hence the missing bits on the board.

The physical issues are:

Upright USB socket means that the display has to be spaced off the board using a stacked socket
USB connector and volume control too close to the 26-pin expansion connector
Speaker connectors too close for individual sockets and not spaced correctly for a 4-pin socket

Loading the MMBasic firmware is a bit idiosyncratic. Obviously it uses the PcoMiteUSB firmware variant but doesn't use the standard serial console pins so the process is as follows:
Flash the firmware via the USB-A port
Connect a keyboard
Enter the following commands blind: OPTION PICO OFF, OPTION SERIAL CONSOLE GP28,GP29
Then you can connect to a comuter and finish configuring or continue with the keyboard as per the instructions on the back of the PCB

I've re-done the physical layout of the PCB to fix the issue and will post the designs on the PicoMiteUSB github page soon. Cost for 5 boards fully built as pictured £115.








New layout:
 
bigmik

Guru

Joined: 20/06/2011
Location: Australia
Posts: 2949
Posted: 11:37pm 29 Feb 2024
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Hi Peter, All,

I have been wondering,  what are the pink lines and dots I see on many of your 3D renders?

Regards,

Mick
Mick's uMite Stuff can be found >>> HERE (Kindly hosted by Dontronics) <<<
 
phil99

Guru

Joined: 11/02/2018
Location: Australia
Posts: 2589
Posted: 12:23am 01 Mar 2024
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They look like orientation markers for the Pick-n-Place robot. The dots are all near pin 1 of the chips.
 
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