Build your own USB tuner . Questions about hardware

Build your own Minitiouner

Postby F6DZP » Sat 2 May 2015 05:15

Hello,

As its not sure we always be able to get the tuner we need, as there are difficult to find when they don't completely disappear from the market,
I have decided two month ago to build my own.
We have many solution for finding good Nim Tuner.
The USB chips used with almost USB tuner of the market is the CY7C86013A.
(Prof7500 = NIM EARDATEK + CY7C86013A, STB5980 = NIM EARD + CY7C86013A ......)
Prof7500_02.jpg
Prof7500_02.jpg (87.46 KiB) Viewed 21810 times

on this side there is only the Nim Tuner EARDATEK and capacitors
Prof7500_01.jpg
Prof7500_01.jpg (137.75 KiB) Viewed 21810 times

We can see on this side, that there are only component for power supplying the Nim tuner + power supply for LNB and CYC786013A for usb interface.
I have began 2 months ago to study this chip, but it is a very powerful chip that takes time to develop for the first time with it and my chineese sample was not sure to work well.
So I have chosen to test also a second solution less powerful but less "eating time" : use the FT2232H I already used with my Digilite modulator.
USBNimTuner2.jpg
USBNimTuner2.jpg (176.06 KiB) Viewed 21810 times

My first step was to test the I2C dialog between FT2232H minimodule and the Samsung NIM


And now develop Check software for this first build

Check USB tuner.jpg
Check USB tuner.jpg (195.74 KiB) Viewed 21810 times

As now I have made good test for this first step, I go to the second step : program the chip inside the NIM to check if I can lock on a DVB-S signal and specialy a very low SR signal (SR250)

CheckTiouneboxLock2.jpg
CheckTiouneboxLock2.jpg (236.34 KiB) Viewed 21810 times

Well! I am in the good way
Last edited by F6DZP on Thu 23 Jun 2016 15:01, edited 4 times in total.
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Re: Build your own Minitiouner

Postby F6DZP » Sat 2 May 2015 05:33

Last step:
I chose to use 5V external power supply, so I have to give on this board the 3.3V and 1V need by the demodulator
I want also now get the TS data coming from the NIM tuner when it is locked, so I add a 3 NAnd gates 74HC10 and wire bus between the NIM and the Minimodule
montage avec NIM samsung_txt.jpg
montage avec NIM samsung_txt.jpg (139.91 KiB) Viewed 21810 times



That's all!!
If we don't need anything else ( 13v or 18V for LNB and 22kHz) the schemtic is complete. Nothing to add! and it works very well at very low SR ( down to SR125 kS/sec)

vLC receiving TS from Minitioune1.jpg
vLC receiving TS from Minitioune1.jpg (328.87 KiB) Viewed 21810 times

As you can see there is a new software that can be used with this MiniTiouner : Minitioune.

Jean-Pierre F6DZP
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Re: Build your own Minitiouner

Postby cashy666 » Sun 5 Feb 2017 19:26

Good evening all,
is this available as a kit? or PCB?

As complete technophobe I need all the help I can get.

any help would be much appreciated.

thank you


Dave
G7MEG
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Re: Build your own Minitiouner

Postby F6DZP » Mon 6 Feb 2017 05:54

Hello,

In UK, the BATC has made a pcb and a kit.

BATCkit _Sharp_.jpg
BATCkit _Sharp_.jpg (102.64 KiB) Viewed 19858 times


More information here:

http://www.batc.org.uk/forum/viewtopic.php?f=15&t=4225

pcb, NIM, Minimodule are available at the BATC shop.

Jean-Pierre F6DZP
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Re: Build your own Minitiouner

Postby cashy666 » Mon 6 Feb 2017 22:36

Hi Jean-Pierre,
thank you for the response. Unfortunatley BATC discontinued the kit sometime ago, only supply the board and usb controller, which ive ordered. I will use the BOM to source the other parts. one concern is getting the right NIM.

regards

Dave
G7MEG
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Re: Build your own Minitiouner

Postby alan-macdonald » Mon 28 Aug 2017 16:51

Hi Dave,
how did you get on with the Minitiouner? BATC now have bare boards and NIMs in stock, along with the USB module and 1v1 regulator.

I've finally got mine built, got the software sorted with help from the IT department (my good lady, M0PSZ) and hopefully this evening whenthe repeater fires up I will be receiving GB3SQ.

Good luck

Mac - M0VLT
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Re: Build your own Minitiouner

Postby F6DZP » Mon 16 Apr 2018 09:17

Hello,

as the forum hard disk crashed in 2016, we lost all information between June 2015 and May 2106, I put some back...
Schematic

My first prototype using a NIM Samsung DNBU10711IST
schéma crayon Minitiouner sans alim.jpg
schéma crayon Minitiouner sans alim.jpg (140.75 KiB) Viewed 12254 times

montage avec NIM samsung_txt.jpg
montage avec NIM samsung_txt.jpg (139.91 KiB) Viewed 12251 times


Using the NIM Eardatek EDS-4B47FF1B+
Schema Minitiouner_Earda_.jpg
Schema Minitiouner_Earda_.jpg (104.66 KiB) Viewed 12254 times


Using the NIM Sharp BS2F7HZ1069
Schema Minitiouner Sharp_.jpg
Schema Minitiouner Sharp_.jpg (106.15 KiB) Viewed 12254 times
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