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Absolutely, one could use something like that.
I already do level shifting on the included I2C bus.
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Thanks for the info and suggestions Russ / Thomas. Will get a multiplexer and experiment with the Arduino in the meantime.
Cheers,
Luke
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Hi Russ,
I've been looking forward to your AC1/2 for some time, and really happy it's about to be released. My question is what it will take for me to program an attenuator of my design, consisting of 5 identical I2C connected channel boards of 24 relays each. The AC2 would sequence the relays (only one closure per step, 1 dB steps, 24dB total) from the optical shaft encoder that you use, and would also store and implement channel offsets from one another, and allow soloing of each channel.
Are you considering a programming kit? Are there any people who would write custom code for this device?
Thanks in advance,
Tom
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To my knowledge programming is done in plain and simple C, using the eclipse tool. It should be quite doable to program it, provided you have the knowledge required and the board fits your needs. If Brian manages to send an early beta I might even be able to write a basic programming guide for it by the time it is released. In any case I'll likely program quite a few lines myself as Russ' apparently focuses on the B3, while I still use the BII boards.
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Hi guy's,
Can someone tell me anything about the (new expected) release date of the AC2?
And will there be a remote On/Off function build in?
Best regards,
Jordo
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Jordo wrote:Hi guy's,
Can someone tell me anything about the (new expected) release date of the AC2?
And will there be a remote On/Off function build in?
Best regards,
Jordo Release should be soon. I have most of the parts and need to start kitting. The day job is pretty busy right now, so my free time is a bit crimped. Remote on/off is not part of the code we currently have, but it is easily achieved by adding a remote I2C controllable Relay board, and using one of the I2C ports. The problem is that it would require the AC2 to remain powered all the time (to receive the remote instructions). This type of standby is increasingly frowned upon as it's a constant consumer (waster) of power. But, as I said, easy enough to add.
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Hi Brian,
thanks for the reply.
I will monitor the website closely in the next few day's. I must have the remote in order to proceed with the project.
For the Hypex NCore amplifier I'm develloping an on/off cirquit with a Micro Controller Unit.
Maybe we can adapt it for the DAC also. In the worst case event I will have two optical eye's I gueass.
thx,
Jordo
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Remember, the AC2 is really meant as a development platform, offering 4 I2C ports and 2 SPI ports, plus RE, Display and remote control. Interfacing with external devices (SPI or I2C) is part of the mission, so it's mainly just adding some code to control whatever you like.
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Hm ok, that's completely new for me but that are a lot of things lately... And if you say it's simple....  But that would mean that the hole powerstage (Trafo's and PSU's) is 'on' and the DAC and I/V stages would be standby?
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You could power the AC2 separately, and leave it on all the time. It could then trigger a relay(s) to power the other sections.
The best way to do that would probably be an I2C port expander chip and driver to a relay coil for each stage you want to control.
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Brian Donegan wrote:[quote=Jordo]Release should be soon. I have most of the parts and need to start kitting. Same for the TelePorter? ....and please get a new avatar as I get dizzy looking at it  Cheers, Nic
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Quote:You could power the AC2 separately, and leave it on all the time. It could then trigger a relay(s) to power the other sections.
The best way to do that would probably be an I2C port expander chip and driver to a relay coil for each stage you want to control. Ok let met think about that... :) This will take a whole other approach than the cirquit we're just develloping. If I adapt this concept we are building for the DAC then we will need another standby pwr coil. Nevertheless it might be the best compact integrated sollution for the DAC to use the I2C. But than we also need another seperate powersupply. How much current will the AC2 draw?
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Any update on availability?
Thanks
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hi
is AC 2 still going to happen? or is Arduino the way to go?
best
Leif
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hello guys
what´s the verdict?
to do or not to do?
I think you owe your clients/fellow DIY´ers an answer, instead of keeping them on the "plank" for years
best
Leif
Norway
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The only thing holding it back at the moment is the amount of support it will require, as it will be an advanced-level kit, requiring some degree of coding knowledge/skill.
We are both working 80-100 hours weeks as it is.
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ok
any chance of "outsourcing" the support then?
best
Leif
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