Remotely Controlled Motorized Volume Pot.

[Dagwood]

Hi Fotios

I'm away on business for a couple of days but will re-check all parts on Friday.
I have loaded quite a few programs using this programmer with no issues

photos attached

[fotios]

Originally Posted by Dagwood

Hi Fotios

I'm away on business for a couple of days but will re-check all parts on Friday.
I have loaded quite a few programs using this programmer with no issues

photos attached

Hi Dag
Thanks for pictures, are very informative. I haven't time to check them at the moment, i will do this tomorrow. But from a first view (from those i can see) i think some tracks of "Reset" circuit are missing. I can't see the common connection node of R5 - C6 - R8 - D6. Check it please.
A very important thing i forgot to refer is that: When power is applied to circuit is automatically placed in STBY mode and of course the MUTE output is also activated constantly. You will be able to operate the MUTE function only if you activate the micro by pressing the POWER ON switch on remote control handset. It should be noted that the volume control function is independent in either mode STBY or PWR ON, it works normally in either state.
That's to the present.
Fotis

[Dagwood]

Good spotting

Yes, a small error on my PCB. I linked them all up on the copper fill section.

[Dagwood]

Hi Fotis

Ok...make that 2 errors! Doh. There is alotto be said for not working on stuff when you are tired

A very important thing i forgot to refer is that: When power is applied to circuit is automatically placed in STBY mode and of course the MUTE output is also activated constantly. You will be able to operate the MUTE function only if you activate the micro by pressing the POWER ON switch on remote control handset. It should be noted that the volume control function is independent in either mode STBY or PWR ON, it works normally in either state.

Problem, my remote dose not have a power on button....any ideas



Cheers

[Rullknufs]

Originally Posted by Dagwood

Problem, my remote dose not have a power on button....any ideas



Cheers

Just take another button and use it as a power button. Find out what code the remote is sending when you press the button of choice.

I'm actually in the process of developing a remotely controlled motorized volume pot myself and I have written a little about it here ?music: Remote controlled volume control

Right now the idea is to use an Arduino board and a stepping motor which is controlling an analog volume pot.

[Dagwood]

Hi Rullknufs

Thanks for you thoughts, only problem is that the remote is for my CD player so if I use any other button for this project it will also instruct the CD player to do something at the same time

[fotios]

Originally Posted by Dagwood

Hi Fotis

Ok...make that 2 errors! Doh. There is alotto be said for not working on stuff when you are tired


Problem, my remote dose not have a power on button....any ideas



Cheers

Hi Dag
Are Volume+ and Volume- functions working now? I mean, can be the motor of volume pot rotated CW and CCW using your remote control handset? Please let me know.
Regarding ARCAM remote handset shown in picture, is for use with CD or DVD player. If it can manage motor rotation in both directions then should be OK. You can make the following test to confirm that can also manage the MUTE relay. Solder a cable in GND (0V) node of PCB. Apply power to remote control board and wait until LED stops to blink. Then, carefully touch the other end of cable at pin 10 of micro, i.e. ground the PwrON/STBY input. Then the MUTE function should be permited.
Try this and if works will proceed in a program code change to use another switch of your handset.
Fotis

[Dagwood]

Hi Fotis

Yes, Volume + & - are working perfect ( my error)
Arcam remote is for Alpha 7 CD player
Tried shorting pin 10 to ground, still not working??

Maybe I will make another PCB with the errors fixed and remove the Mute relay ( I will leave the function for programming )

Cheers

[Dagwood]

Could it be that I have used BC546 rather than MPSA06?

[fotios]

Originally Posted by Dagwood

Hi Fotis

Yes, Volume + & - are working perfect ( my error)
Arcam remote is for Alpha 7 CD player
Tried shorting pin 10 to ground, still not working??

Maybe I will make another PCB with the errors fixed and remove the Mute relay ( I will leave the function for programming )

Cheers

OK, it shows that your ARCAM remote is compatible with RC5 protocol. Try the following test:
1) Remove cables from CON6. Get 2 LEDs and screw the cathode (is the short lead of LED, the long is the anode) of each one in the terminals of CON6. Solder one 470R bleed resistor in the other terminal of each LED. Screw the other leads of both resistors at the +5V output of CON6 (is the first from the right side). Apply power to remote control PCB, the LED that is screwed at the left terminal should be lit constantly, that represents the MUTE output. The other LED that is screwed at the middle terminal of CON6 should be stay OFF and represents the PWR On output. Now, try again to ground the pin 10 of micro. The middle (PWR On) LED should be lit now, while the MUTE LED should be turned Off.
If this test works, then your hardware should be OK. Make please this test and let me know. Then i will try a search if the MUTE code is same for both CD and Preamplifier.
Fotis