Hello everyone,
this is my Nutube Korg B1 preamp with STM32f469i-disco touch screen. And I have been enjoying music with him for more than 3 years. And thanks again Nelson
this is my Nutube Korg B1 preamp with STM32f469i-disco touch screen. And I have been enjoying music with him for more than 3 years. And thanks again Nelson
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Superb! Can you tell us more about the touch screen, input selection, and what looks like a motorized pot? Does it have a remote? Very cool and sophisticated.
The brain of my preamplifier is a Discovery kit with MCU STM32F469NI from STMicroelectronics. It's a 32-bit MCU with a bunch of peripherals and a touch screen. The input, output relay and volume attenuator are controlled via the I2C bus.
I chose a 128-step relay attenuator for volume control. The touch screen is used for switching inputs and dimming the display. To control the volume, I used a rotary incremental encoder with 360 pulses per revolution from Kubler. Of course, any incremental sensor with differential outputs can be used. Anything can be programmed.
I haven't solved the remote control yet. I like to turn the knob. I like to play a record on the turntable and turn the volume knob. But maybe I'll do some remote control sometime. Maybe on LoRa communication or something else. I do not know yet.
So far everything works great and I like it.
I chose a 128-step relay attenuator for volume control. The touch screen is used for switching inputs and dimming the display. To control the volume, I used a rotary incremental encoder with 360 pulses per revolution from Kubler. Of course, any incremental sensor with differential outputs can be used. Anything can be programmed.
I haven't solved the remote control yet. I like to turn the knob. I like to play a record on the turntable and turn the volume knob. But maybe I'll do some remote control sometime. Maybe on LoRa communication or something else. I do not know yet.
So far everything works great and I like it.
