MiniTiouner Hardware version 2

Discussion about the MiniTiouner board and the MiniTiouner Digital ATV Receive Software. See also http://www.vivadatv.org/index.php
MN-tech
Posts: 42
Joined: Thu Aug 30, 2012 6:01 pm

Re: MiniTiouner Hardware version 2

Postby MN-tech » Tue Jun 06, 2017 9:58 pm

It's easy to order from DigiKey. If you follow the instructions on this Portsdown page you can upload the spreadsheet and order the parts without retyping the part numbers.
https://wiki.batc.tv/Filter_Modulator_build (look for the Parts List paragraph)
Enter zero quantity for the non-DigiKey parts and they will be ignored.
Increase the quantity of item BC2665CT-ND to 10, if you don't, they will offer you the option to do so, which might be a bit confusing the first time through the process.
If you select 'Customer Reference' for the spreadsheet column 'Designator' the bags will be marked with the project's parts numbers.

M0SKM
Posts: 101
Joined: Sun Jul 13, 2014 3:15 pm
Location: Houghton Regis, Beds
Contact:

Re: MiniTiouner Hardware version 2

Postby M0SKM » Wed Jun 07, 2017 6:20 am

It's easy to order from DigiKey. If you follow the instructions on this Portsdown page you can upload the spreadsheet and order the parts without retyping the part numbers.
https://wiki.batc.tv/Filter_Modulator_build (look for the Parts List paragraph)
Enter zero quantity for the non-DigiKey parts and they will be ignored.
Increase the quantity of item BC2665CT-ND to 10, if you don't, they will offer you the option to do so, which might be a bit confusing the first time through the process.
If you select 'Customer Reference' for the spreadsheet column 'Designator' the bags will be marked with the project's parts numbers.


Digikey charge postage on the Minitiouner parts, however you can avoid the postal charge if you add the recommended Hammond enclosure to your list.

g0mjw
Posts: 330
Joined: Sat Sep 20, 2014 9:15 am

Re: MiniTiouner Hardware version 2

Postby g0mjw » Thu Jun 08, 2017 4:59 pm

I got some of the parts from Farnell for the last build so this is not a complete list. I already had resistors, headers and some of the capacitors etc. Hope its useful. Note you can substitute parts fairly widely, e.g. use a 470uF for the input capacitor rather than a 680uF as they come in packs of 5. Just make sure the 22uF caps are low ESR.

1287482 SN74HC10N NAND GATE, TRIPLE 3-INPUT, PDIP14
1578423 MCP1826S-3302E/AB IC, LDO REG, 1A, 3.3V, TO2202-3
1848502 ECA1EM471 CAP, ALU ELEC, 470UF, 25V, RAD
2292299 28C0236-0JW-10 FILTER, 6X10-21MM, 100MHZ, 998R
2361595 1455N1201BU ENCLOSURE, ALUMINIUM, BLUE, 120X103X53MM
8812640 UPM1J220MED CAP, ALU ELEC, 22UF, 63V, RAD
9557962 1N5339BG DIODE, ZENER, 5.6V, 5W

Mike

G8XZD-TV
Posts: 74
Joined: Fri Feb 22, 2013 6:41 pm

Re: MiniTiouner Hardware version 2

Postby G8XZD-TV » Fri Jun 09, 2017 3:33 pm

Thanks Mike.

G0UWB
Posts: 1
Joined: Sat Jun 24, 2017 1:09 am

Re: MiniTiouner Hardware version 2

Postby G0UWB » Sat Jun 24, 2017 1:35 am

Referring to the voltages that should be found on L1= 3.3v, L2=1.1v and L3=3.3v there is a tolerable range specified for L2 only of 1.05-1.25v . I would be most grateful if someone could please tell me what the tolerances are for L1 and L3. Mine readings are L1=3.275v and L3- 3.291v and I've no idea whether these are acceptable or not.
73 de Ralph G0UWB

g0mjw
Posts: 330
Joined: Sat Sep 20, 2014 9:15 am

Re: MiniTiouner Hardware version 2

Postby g0mjw » Sat Jun 24, 2017 1:39 pm

Someone asked about acceptable voltage ranges from the linear regulators - the formal spec for the NIM is 10% but that's a lot. Normally I would expect the regulator outputs be well within 5% of their nominal 3.3v or 1.1V values. If you do measure strange voltages its possible the regulators are oscillating. That would be caused for example by not using low ESR capacitors.

Mike

G1BVI
Posts: 22
Joined: Wed Aug 02, 2017 7:32 am

Re: MiniTiouner Hardware version 2

Postby G1BVI » Fri Oct 27, 2017 2:44 pm

G3UKV wrote:Starting to sort parts out for the Vers 2 PCB. Looking on eBay there are various DC-DC converters, but none look like the photos.
Can anyone advise an eBay item number for it, so that it will definitely fit the PCB please ?


ust ordered the PCB and tuner too and was wondering what DC-DC converter would fit on the PCB.

The ebay links in the forum are no longer showing on ebay

Can someone please advise
thanks
73
Nick

M0DHP
Posts: 31
Joined: Sun Sep 24, 2017 3:25 pm
Location: Thames Ditton IO91TJ

Re: MiniTiouner Hardware version 2

Postby M0DHP » Fri Oct 27, 2017 3:19 pm

G1BVI wrote: was wondering what DC-DC converter would fit on the PCB.


Hi Nick

If you search for "MP1584" in eBay, the top listings are all the right type. For example: http://www.ebay.co.uk/itm/UK-MP1584-3A- ... SwNSxU1lcu

Cheers

Ray M0DHP

G1BVI
Posts: 22
Joined: Wed Aug 02, 2017 7:32 am

Re: MiniTiouner Hardware version 2

Postby G1BVI » Fri Oct 27, 2017 7:31 pm

M0DHP wrote:
G1BVI wrote: was wondering what DC-DC converter would fit on the PCB.


Hi Nick

If you search for "MP1584" in eBay, the top listings are all the right type. For example: http://www.ebay.co.uk/itm/UK-MP1584-3A- ... SwNSxU1lcu

Cheers

Ray M0DHP

Thanks Ray
Ordered one
73
Nick

g4pdf
Posts: 4
Joined: Mon Oct 16, 2017 5:50 pm
Location: Nr. Wragby in Lincolnshire
Contact:

Notes on building the BATC v2 Minitiouner.pdf

Postby g4pdf » Fri Nov 03, 2017 2:47 pm

I can't see that anyone else has picked this up so I will mention that: the schematic (Minitiouner v2.1 Rev.1) in the excellent https://wiki.batc.tv/File:Notes_on_building_the_BATC_v2_Minitiouner.pdf does not show the 5.6v Zener diode D3 across the output of the DC-DC Converter, prior to J2. (As a former PCB design Engineer I'm used to spotting these differences).
73 - Bob


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