Hi all,
I just bought my first Raspberry Pi, and I am excited to join the Raspberry Pi, Linux and physical computing community!
My first project is to upgrade, or streamify my NAD C375Bee hi-fi amplifier, so it will be more modern and versatile, basically turning it into a streaming device capable of playing music from Spotify and similar platforms.
To achieve this, I have bought a HifiBerry DAC2 Pro, which enhanced the quality of the sound, and with a guide from pimylifeup.com, I successfully installed Spotify on the Pi as well.
Now I find myself at a decision point: Should I set up my system so that the amplifier turns on/off the Pi, or vice versa?
I tend to follow the latter option, where the Pi turns on when the amp turns on, to minimize the standby energy consumption.
My amp has a 12v trigger, which is 3.5 mm mono Jack outlet which has 12V voltage difference when the amp is turned on, and 0V when turned off able to run 100 mA. According to this guide https://www.makeuseof.com/how-to-turn-o ... pberry-pi/ one can turn on the Pi, by shorting pin 5&6. My plan is to connect the 12V trigger to one side of an opto-coupler, and pins 5 and 6 to the other side. This way, the pins will be shorted when the 12V trigger activates the opto-coupler, turning on the Pi..
Subsequently, I intend to develop a Python script that communicates with the amp via a RS232 cable to detect its power state. If the amp is turned off, the script will shut down the Pi.
My question is whether continuously shorting pins 5 and 6 while the amp (and thus the Pi) is running will cause any problems?
Also, I welcome any feedback and suggestions for my project.
Thanks in advance for your help, and I hope you all have a fantastic weekend! Cheerio,
JohnnyFishFish
I just bought my first Raspberry Pi, and I am excited to join the Raspberry Pi, Linux and physical computing community!
My first project is to upgrade, or streamify my NAD C375Bee hi-fi amplifier, so it will be more modern and versatile, basically turning it into a streaming device capable of playing music from Spotify and similar platforms.
To achieve this, I have bought a HifiBerry DAC2 Pro, which enhanced the quality of the sound, and with a guide from pimylifeup.com, I successfully installed Spotify on the Pi as well.
Now I find myself at a decision point: Should I set up my system so that the amplifier turns on/off the Pi, or vice versa?
I tend to follow the latter option, where the Pi turns on when the amp turns on, to minimize the standby energy consumption.
My amp has a 12v trigger, which is 3.5 mm mono Jack outlet which has 12V voltage difference when the amp is turned on, and 0V when turned off able to run 100 mA. According to this guide https://www.makeuseof.com/how-to-turn-o ... pberry-pi/ one can turn on the Pi, by shorting pin 5&6. My plan is to connect the 12V trigger to one side of an opto-coupler, and pins 5 and 6 to the other side. This way, the pins will be shorted when the 12V trigger activates the opto-coupler, turning on the Pi..
Subsequently, I intend to develop a Python script that communicates with the amp via a RS232 cable to detect its power state. If the amp is turned off, the script will shut down the Pi.
My question is whether continuously shorting pins 5 and 6 while the amp (and thus the Pi) is running will cause any problems?
Also, I welcome any feedback and suggestions for my project.
Thanks in advance for your help, and I hope you all have a fantastic weekend! Cheerio,
JohnnyFishFish
Statistics: Posted by johnnyfishfish — Fri Mar 01, 2024 8:26 pm — Replies 0 — Views 31
