Jeff, can you please post the schematic and layout for the latest compact "release" with SS relays.
Thimios, I will sent you the firmware by e-mail - I prefer not to publish it in an open forum 😉
I've got my "original" layout, utilising Arduino Nano, but Jeff did a great job, "tearing Arduino to pieces" and using ATMega chip directly, as well as adding the SS relays for the speakers - I like it more than the original one. The project is constantly under development, but we've got some 'production' releases.
OS also uses additional control channels - more LEDs for status indication (and appropriately updated firmware). I use a minimalistic single-LED approach.
Thimios, I will sent you the firmware by e-mail - I prefer not to publish it in an open forum 😉
I've got my "original" layout, utilising Arduino Nano, but Jeff did a great job, "tearing Arduino to pieces" and using ATMega chip directly, as well as adding the SS relays for the speakers - I like it more than the original one. The project is constantly under development, but we've got some 'production' releases.
OS also uses additional control channels - more LEDs for status indication (and appropriately updated firmware). I use a minimalistic single-LED approach.
This is the latest version. I haven't built one yet. Mosfets are still over a month away here. Do you want gerbers or are you going to hand etch this Thimos?
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I think I've found an alternative Mosfet😀 http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00072096.pdf
If i well understand there are two software versions.
1) Vallery's for arduino nano.
2) Ostripper's for this jwilheim version(discret atmega328).
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Shake the toner cartridge back and forth , do a self cleaning routine on the
printer and a couple test pages first. Toner can do the 3-4/1000th "crosshairs"
on my sprint layout.corners.
OS
There's actually 3 software versions. Valery's first version, then his revision to shut the inrush relay off after the power relay turned on to take some load off the 12V regulator, and OS's version with extra led outputs. All three will work.
Yes, actually it does not matter is it's Arduino Nano, or ATMega chip itself.
Firmware will work anyway.
Thimios, I will send it from home in the evening.
Firmware will work anyway.
Thimios, I will send it from home in the evening.
I used to cheat when I did boards like these these. Etch each layer on a separate 1/32" thick 1/2 oz single sided board, then glue them together. They are $30 for 10 boards out of China.
Gerber files are necessary for this and a good chinese manufacture.
You can suggest me your own.
I've always used DHL with them. I'm not sure who else they ship with. Taxes and duties are different for every country so I'm not sure what they are. They declare the boards as a gift to US customers so they don't pay any tax or duties. No such luck in Canada. DHL collects all that for me.
I don't know if this has been covered, or if it is possible. What if the protection board were in a stand alone case, and any sensors (etc.) were installed in the amplifiers with plug in leads, so one protection circuit could be used for whatever amp you happened to be listening to? Is this doable?