I just finished my Muses volume control using boards and Tiny controller chip from Meldano. My wire crimping skills from R/C airplanes came in handy, and the SMD soldering wasn't too bad. I dragged solder across the chip pins then soaked it up with braid and they soldered just fine. Installed it in my BA-3 and it sounds very nice. I put together a 15v regulator using advice from folks here, and power it off the BA-3 PS.
I added the IR receiver but not the digital display. One thing I can't figure out is how to program a remote. Can anyone assist with this? I tried to follow the instructions to no avail.
Thanks!
I added the IR receiver but not the digital display. One thing I can't figure out is how to program a remote. Can anyone assist with this? I tried to follow the instructions to no avail.
Thanks!
„ The controller can be taught to many common IR codes. Below the setup is described
1. Turn on supply voltage by pressing the encoder button
2. Release encoder button
3. Press button for "volume up" shortly on the remote control 4. Briefly press "volume down" button on the remote control 5. Briefly press the "mute" button on the remote control
In the case the 3 keys have been successfully detected, the controller will start as usual with the starting volume. The read codes will be stored permanently in the EEPROM.“
Point 1 means: Power on while pressing the encoder key
1. Turn on supply voltage by pressing the encoder button
2. Release encoder button
3. Press button for "volume up" shortly on the remote control 4. Briefly press "volume down" button on the remote control 5. Briefly press the "mute" button on the remote control
In the case the 3 keys have been successfully detected, the controller will start as usual with the starting volume. The read codes will be stored permanently in the EEPROM.“
Point 1 means: Power on while pressing the encoder key
„ The controller can be taught to many common IR codes. Below the setup is described
1. Turn on supply voltage by pressing the encoder button
2. Release encoder button
3. Press button for "volume up" shortly on the remote control 4. Briefly press "volume down" button on the remote control 5. Briefly press the "mute" button on the remote control
In the case the 3 keys have been successfully detected, the controller will start as usual with the starting volume. The read codes will be stored permanently in the EEPROM.“
Point 1 means: Power on while pressing the encoder key
Thanks Meldano! I did hold the encoder down while powering on, but still no luck. I tried 2 different remotes.
I'll double-check the pinout tomorrow, for now it's time to listen to tunes while social distancing. We're getting takeout tonight from our favorite restaurant to help keep them afloat.
I really like the sound of this attenuator.
OK I checked it over: there is 5v across pins 2 and 3 as expected. Pin 1 has continuity to pin 10 on the controller. Unfortunately the schematic I have is too blurry to read the fine print. Pins 2 and 3 have continuity to the correct sides of C6. It also measures 33K ohms across pins 1 and 3 as expected.
Is there a way to check the IR receiver to see if it's bad?
https://www.mouser.com/datasheet/2/427/tsop48-1766935.pdf
Is there a way to check the IR receiver to see if it's bad?
https://www.mouser.com/datasheet/2/427/tsop48-1766935.pdf
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This sounds very good.
I'm still in my starting blocks, trying to figure out how to power my muses from my Mesmerize DCB1 (which was confirmed to be possible, but I'm far from being able to put things together on my own), so...
Would you mind to post a picture of your regulator, so that I might be able to catch up a bit?
Thanks! and take care!
david
There are a couple methods described in this post. I used the 7815/7915 approach.
https://www.diyaudio.com/forums/pass-labs/258022-ba-3-preamp-build-guide-35.html#post6092414
The datasheet for the regulator gives you the cap values.
https://www.mouser.com/datasheet/2/308/MC79M00-D-1811438.pdf
Balance control?
First of all, thanks, mcquaide for pointing me to the direction!
while I was looking around on the web, I saw a kit that has a "dual-use" encoder, for attenuation and balance-control...
I was thinking about balance-control myself, but would prefer to have it not in a push-double function, but on a separate knob...
feasible?
First of all, thanks, mcquaide for pointing me to the direction!
while I was looking around on the web, I saw a kit that has a "dual-use" encoder, for attenuation and balance-control...
I was thinking about balance-control myself, but would prefer to have it not in a push-double function, but on a separate knob...
feasible?
Hi myleftear,
You only need to connect one more decoder to the microprocessor and you can use it to control the offset between the channels. The volume of the channels can be adjusted individually in Muses.
I prefer to control such things with the built-in button.
I don't like so many controls; I prefer to keep it puristic.
You only need to connect one more decoder to the microprocessor and you can use it to control the offset between the channels. The volume of the channels can be adjusted individually in Muses.
I prefer to control such things with the built-in button.
I don't like so many controls; I prefer to keep it puristic.
I have also developed a circuit board. This is based on the specifications of the datasheet, i.e. with coupling capacitors and OP amp. If you want to have a look at my construction:
Muses 72320
Muses 72320