Portsdown 4 Major Update

Discussion about this major DATV Project. See https://wiki.batc.org.uk/The_Portsdown_Transmitter
radiogareth
Posts: 1297
Joined: Wed Jan 06, 2016 9:46 am

Re: Portsdown 4 Major Update

Post by radiogareth » Sun Jul 14, 2024 6:24 pm

CPC have them and you get free delivery too...
https://cpc.farnell.com/raspberry-pi/ra ... 20displays

*** EDIT**** well I'm sure they had them last night......now showing as late July....

Gareth

G8DGR
Posts: 44
Joined: Tue Oct 01, 2013 3:06 pm

Re: Portsdown 4 Major Update

Post by G8DGR » Mon Jul 15, 2024 1:20 pm

Hi
Got one from Rapid Electronics .
Delivery to-morrow.
Pi 4 and pluto I have and a Hammond 1550J (Black) is coming.
Also located the Mech Drawing for the display to do the cutout in the box.
Dave said the Micro SD card is underway.
So I'm all set I think
Rod G8DGR

G8DGR
Posts: 44
Joined: Tue Oct 01, 2013 3:06 pm

Re: Portsdown 4 Major Update

Post by G8DGR » Wed Jul 17, 2024 5:37 am

Ok it all arrived and works
Only one problem - The Pi cant detect the Pluto.
Pluto works on a PC with DATVEasy
So clearly I do not have the Pluto set up to suit the Portsdown 4
I need to know the correct Pluto firmware version and config.txt parameters to get the Pi to see the Pluto

Rod G8DGR

g0mjw
Posts: 2411
Joined: Sat Sep 20, 2014 9:15 am

Re: Portsdown 4 Major Update

Post by g0mjw » Wed Jul 17, 2024 6:04 am

See the Wiki https://wiki.batc.org.uk/Portsdown_4_Pluto - the firmware version required is listed there.

radiogareth
Posts: 1297
Joined: Wed Jan 06, 2016 9:46 am

Re: Portsdown 4 Major Update

Post by radiogareth » Wed Jul 17, 2024 8:36 pm

What PSU are you using and can you measure the voltage accurately on the RPI. If its much over 5.25V you will find the Pluto can't be found. Many users add a diode in the +VE supply cable to the Pluto (cut open the USB cable and insert a suitable low volts drop diode in line, usually the RED. The Portsdown should report the software version found in the Pluto, even if its the wrong one. In the short term you could try turning the RPI volts down to 5, but it gets very crotchety at that point.
With that mod to the pluto usb lead and the PD4 on 5.25 volts, I have very few problems.
Good luck...
Gareth

G8GKQ
Site Admin
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Re: Portsdown 4 Major Update

Post by G8GKQ » Wed Aug 07, 2024 9:38 am

G8DGR wrote:
Sun Jul 14, 2024 1:06 pm
Hi
The BATC shop says out of stock for the Portsdown 4 Micro SD card
When will these be available please?
Rod G8DGR
Following a correction to the website, the spurious "Out-of-stock" message should no longer appear. Portsdown 4 (and 2020) SD cards continue to be available from the BATC shop.

Dave, G8GKQ

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