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Third GB - MAYA advanced R-2R logarithmic ladded

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iTiberius

iTiberius

Member
Joined 2005
angrypat said:
Disappointed with the momentary power button but oh well, I'll have to work around that. Any updates?
Click to expand...

It is a stand-by power button and you may change this with any fancy back-lighted push button. If you have any suggestion, or explain why dissapointed, may help us to improve the product.
Recently I had a car crash, nobody was hurt, but this delayed my work on preparing units and shipments. Sorry for this. Will start to ship first orders next week.

Regards,
Tibi
 
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PieterPiet

Member
Joined 2016
Thanks for the update Tibi and happily nobody was hurt!

With regard to changing the push buttons.....you show a nice example by Gerben on your twitter account, I assume Gerben used something like a bulgin (SPST-NO) with a ring led for 'on/off'. And another push button without led for 'select'.

One suggestion about the current push buttons. Your standard push button looks to me like it isn't suitable to integrate directly in a front panel. If I am right, your standard push buttons need some kind of 'finishing front/touch part' to have the button integrate nicely with a alu (silver or black) front panel. I wonder if there are any standard 'anodized silver/black alumina button parts' that fit on your push buttons. A reference (mouser digikey etc) to such parts and how to integrate into a front panel design might be helpful for people.

For myself, I will use bulgin buttons anyway as I use these in all my equipment and I want them to look alike.
 

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angrypat

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Joined 2016
I'm new to diy, and my knowledge is limited. I plan on incorporating this into a pre with an aksa lender and Hans allmiers high octane phono stage, and possibly a tone control. So.. I think a n/o spst switch would have been easier, but I'll figure it out. Certainly not a criticism, looking forward to it's arrival, the maya will be great way to make a fully functional and complete pre amp, although I am way behind on my projects so no hurry. Fortunately, I found this forum, with it's wealth of knowledge and helpful people, an amazing place and resource. Still need to finish the F6 first!
 
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PieterPiet

Member
Joined 2016
Can I check the switch type of the buttons with you for certainty?

In the last post the links refer to: circuit = 'SPDT' and I see various switch functions --> 'on-momentary' and 'Off-momentary'.

Looking at the picture of the Maya on/off and select buttons, I think we do not need for circuit 'SPDT' but can also use circuit 'SPST' (single-pole, single-throw). Am I right?

For Switch function we need: 'off -momentary'. So the switch is only closed (connected) when being pushed. Not being pushed, the switch is open. Am I right?
 

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iTiberius

iTiberius

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Joined 2005
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Gerben

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PieterPiet

Member
Joined 2016
Hi Tibi, what type of plexiglass or polycarbonate is normally used as display filter for audio front panels? I like to have a bit dark / black /antracyte glass in front of the maya oled display (mounted in a 10mm thick modushop silver alu front panel). It should be dark enough to hide the display and IR receiver behind. Is it just a matter of trial and error to find the glass type with the right level of transparancy/transmissivity?

An idea to add to maya: add a power supply point to maya display module to power a front panel led which indicates power on. Now one has to add another transformer and use of the relais to do that.

Thanks, pieter
 
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