I've dug through a number of posts on input selectors for a preamp.
I'm trying to do something quick and dirty, but with the potential to be worthwhile. As such, do folks have advice on using the following board as an input selector linked to a preamp?
stereo audio channel input selector board kit ! - eBay (item 220497959345 end time Jul-17-10 06:32:17 PDT)
My hope is to connect two of these to a PIC controller board. My problem is I failed the electronics part of Physics, so I'm an absolute newbie. I've build small circuits, but I'd be looking to "cut and paste" another project's work here.
I'm trying to do something quick and dirty, but with the potential to be worthwhile. As such, do folks have advice on using the following board as an input selector linked to a preamp?
stereo audio channel input selector board kit ! - eBay (item 220497959345 end time Jul-17-10 06:32:17 PDT)
My hope is to connect two of these to a PIC controller board. My problem is I failed the electronics part of Physics, so I'm an absolute newbie. I've build small circuits, but I'd be looking to "cut and paste" another project's work here.
2 of these boards will allow you to select any one of 8 input stereo channels into a preamp, suitably controlled.
You have some problems tho'.
The power supply for this is 12vac. This is not compatible with a PIC which will work with 5VDC nominal. Plus you have the problem of programming the PIC.
Why do you want to use a PIC? It will let you set up a system with a single push switch which will cycle through a number of inputs, but things will be simpler if you just have a 8-way rotary or other selector which you can yoke the 2 boards to, probably paralleling their outputs without complication.
w
You have some problems tho'.
The power supply for this is 12vac. This is not compatible with a PIC which will work with 5VDC nominal. Plus you have the problem of programming the PIC.
Why do you want to use a PIC? It will let you set up a system with a single push switch which will cycle through a number of inputs, but things will be simpler if you just have a 8-way rotary or other selector which you can yoke the 2 boards to, probably paralleling their outputs without complication.
w
On the theme of PIC's this is ACE for a PIC project, letting you add remote control... the best I have ever come across... and it works faultlessly. Check out the modes it can be used in... BiToggle for example.
FPRC5RX - DIY learning IR decoder
The ebay thingy looks OK as far as it goes... it's not the last word in audio switching of course.
FPRC5RX - DIY learning IR decoder
The ebay thingy looks OK as far as it goes... it's not the last word in audio switching of course.
Actually, it looks very nice.
I am using similar design on my preamp. The only problem I see is the quality of the relays. Here you get everything for $15. I paid $6 for each relay from mouser.
Go for it 🙂
I am using similar design on my preamp. The only problem I see is the quality of the relays. Here you get everything for $15. I paid $6 for each relay from mouser.
Go for it 🙂
Nice bag of bits for the price!
It looks like it's using transistors to switch the relay current, so it shouldn't be too hard to interface with PIC or other logic.
I'd be tempted to move the AC away from the audio. Maybe the rectifier diodes etc can be moved off-board.
It looks like it's using transistors to switch the relay current, so it shouldn't be too hard to interface with PIC or other logic.
I'd be tempted to move the AC away from the audio. Maybe the rectifier diodes etc can be moved off-board.
The posted PIC site is beyond my abilites. The comment about 12V vs 5V is a good one.
Let me rephase the problem:
I'd like a remote controlled input selector capable of volume control too. I'd thought the way to go was a PIC and relays, but I'm open to suggestion. Ideally, I'd like to buy PCB or a kit. Is there such an animal?
Let me rephase the problem:
I'd like a remote controlled input selector capable of volume control too. I'd thought the way to go was a PIC and relays, but I'm open to suggestion. Ideally, I'd like to buy PCB or a kit. Is there such an animal?
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