Yet another Volume controlers and source selections

Hii this is what i have of TDA7439's processor side schematics.
I also think we will need M32 or a bit larger one since Si4703 was bigger one compared to TDA7439's routine
i would like to keep the TDA7439 as it is and add one more switch for radio, and a rotary encoder to trune the radio.

so that would make 2 rotary enocder and 2 switchs.
 

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I was looking to this display:http://www.mouser.com/ds/2/291/NHD-2.23-12832UCY3-52838.pdf
and this one: http://www.mouser.com/ds/2/291/NHD-0216KZW-AB5-51365.pdf

Could someone more knowledgeable to tell me if they would work in the ATMEGA8515-PGA2310 configuration discussed here ?

The standard 16x2 display that i use is a bit hard to read from more than 2 meters.

Hi,
Before you go get a OLED Display Module :
check if the controller can be used in bascom
standart is HD44780

there is a lot of OLED Display that do not work as standart !!!!!

see BASCOM-AVR

why not try find 16x2 large/big charset lcd on ebay ect
 
Got everything wire up and ready for testing but...
Having trouble programing the Atmega and going to give up for today.
Can any one recommend a cheap programer ? the one I have is one made with just some resistors on a DB25 plug (isp programer).

Ric
Hi,
You need a programmer that can program FUSEBITS !!!
look for USBasp like this
or check bay for a AVR MRKII / USBASP
atmega is default 1 Mhz in clock in most of the code we have clock 8 Mhz
 
Hi FarmTech
Found USBASP on the *bay
Ponyprog does fusebits.
I have the freeware version of Bascom AVR but apparently it doesn't take files bigger then 4K and I really don't want to pay for something I'm only planing to use once.

Ric

If you only burn the bin or hex you do not need something else , only for compiling more that 4K you need licence .
You can ask someone that have licence for Bascom to do the firmware and you only program using Bascom and USBASP .
 
Hi Danzup,

any provision to add a trigger supply section? to control the amplifer on/off?

BR,
Junie

Is already included in current firmware v3.5
There are two open collector transistors for amplifier/preamplifier power On/Off and tube plate delay (see schematic J7 connector).
All you need is to connect them to an adequate relay.

Regards,
Tibi
 
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