Hey Hendrik,
I'am testing this board now with 8515 seems to work ok
I used Danzup code as base code and edit the layout for the board
when finish testing I post the code for it
-96dB must be quiet enough to be almost silent. I can't imagine when you would need total silence - turn it off.
My PGA2311 kit from E-Bay has been problematic from the start. For a start it came with no instructions other than "Insert the components as per the silk screen". I did, only to find that the PSU diodes were the wrong way round. It still doesn't work properly. It starts up OK and drops to -96dB. Then it rises to -46dB. From there I can only reduce the volume and not increase it.
My PGA2311 kit from E-Bay has been problematic from the start. For a start it came with no instructions other than "Insert the components as per the silk screen". I did, only to find that the PSU diodes were the wrong way round. It still doesn't work properly. It starts up OK and drops to -96dB. Then it rises to -46dB. From there I can only reduce the volume and not increase it.
Bascom AMEGA8515 CODE for China Board
' you need to modify the board a bit for this code see China_8515_sch_EDIT_THIS.PNG
Here is the code for China board using Atmega8515 fuse INT 8Mhz
download Zip file and edit PCB like in SCH
I removed the 4 sil pullups resistor network
and cut the wire at PIN 9 RESET 89C51 use reverse rest so you need to CUT here
LCD show volume as 0 - 63 but we can change it if you like db or 0-128
' you need to modify the board a bit for this code see China_8515_sch_EDIT_THIS.PNG
Here is the code for China board using Atmega8515 fuse INT 8Mhz
download Zip file and edit PCB like in SCH
I removed the 4 sil pullups resistor network
and cut the wire at PIN 9 RESET 89C51 use reverse rest so you need to CUT here
LCD show volume as 0 - 63 but we can change it if you like db or 0-128
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Hi,
First of all this is ATMEL not PIC
so if you'r setup is based on a pic I can't help you (sorry)
Yep, Mine looks exactly the same, just the markings on the micro are different.
Question was, How do you reprogram the new micro ?
If I need to buy a PIC (or whatever) programming board and the software to go with it, it ain't worth it. Dusty Bin can have a feast.
I only paid £19.00 for the cr*p kit in the first place.
Question was, How do you reprogram the new micro ?
If I need to buy a PIC (or whatever) programming board and the software to go with it, it ain't worth it. Dusty Bin can have a feast.
I only paid £19.00 for the cr*p kit in the first place.
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You need a programmer to program the chip and Fusebits
software for programmers are free on net , just be sure that the programmer can program fusebits Atmega8515 is default 1Mhz int we run 8Mhz int
I dont have time to make a long list of programmers and software so check the web for it
How can I help :
if you like I can program a chip and ship it to you
all you need is pay for chip and shipping cost from Denmark
or you can send me a chip (ATMEGA8515) and I program it) and ship back to you
before you do this check post #1 schematic to be sure it's same layout
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I've had to send the kit back to China for the time being. The PCB that I bought had the rectifier diode silk screen orientation round trhe wrong way which caused a bit of damage. The vendor wants to see the boards.
How much would a programmed chip be ? I might just sent the kit to you so that you can verify your work before you return it, that would save any animosity due to confusion.
What crystal is on your PCB ? Mine has a 12MHz crystal.
How much would a programmed chip be ? I might just sent the kit to you so that you can verify your work before you return it, that would save any animosity due to confusion.
What crystal is on your PCB ? Mine has a 12MHz crystal.
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around 10£ inc shipping cost (5.8£)
crystal is same but I see 1 Cap to lcd backlight the yellow one left site
and connectors top right is not same
but that dont mean its not same chip pin layout as mine
about the rectifier diode maybe the PGA2311 is dead from this error wrong power in +-5V
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I think the regs protected the PGA2311. They did not output anything with reverse polarity input.
I was amazed, the two regs smoked like a burning building but were both still OK after testing. I only applied the reverse power for less that a second.
Anyway, hopefully Chinese vendor will sort that out as that was his mistake. You will notice that the four rectifiers are noe apparently the wrong way round (this is how they should be)
£10 sounds fine to me.
I was amazed, the two regs smoked like a burning building but were both still OK after testing. I only applied the reverse power for less that a second.
Anyway, hopefully Chinese vendor will sort that out as that was his mistake. You will notice that the four rectifiers are noe apparently the wrong way round (this is how they should be)
£10 sounds fine to me.
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Hi, KatieandDad !
Can I write your source http://www.diyaudio.com/forums/atta...l-module-pga-2311-china_8515_farmtech_nec.zip
on this chip Atmel at89c52 or I must use ATmega8515 ? Is It works?
Can I write your source http://www.diyaudio.com/forums/atta...l-module-pga-2311-china_8515_farmtech_nec.zip
on this chip Atmel at89c52 or I must use ATmega8515 ? Is It works?
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