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Power options for RPi + Allo BOSS v1.2
#11
(06-13-2018, 09:38 PM)Tim Curtis Wrote: Hi William,

I run my Piano 2.1 config with 2 x 5V feeds from an Anker battery similar to #5. The power sequence I use is below.

Powering down

Perform Menu, Restart, Shutdown and wait for the green activityr LED on the Pi to blink 10 times indicating the shutdown sequence is complete and power can safely be disconnected.

1. Disconnect power from the Pi
2. Disconnect power from the DAC

Powering up

1. Connect power to the DAC
2. Connect power to the Pi

Hello Tim

I want to develop a shunt regulated power supply (at least for my Allo Boss dac), and I would like to automate the power up (and down).
How much time does it take to turn on the raspberry after the dac ?
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#12
(10-25-2018, 10:25 AM)yannig Wrote:
(06-13-2018, 09:38 PM)Tim Curtis Wrote: Hi William,

I run my Piano 2.1 config with 2 x 5V feeds from an Anker battery similar to #5. The power sequence I use is below.

Powering down

Perform Menu, Restart, Shutdown and wait for the green activityr LED on the Pi to blink 10 times indicating the shutdown sequence is complete and power can safely be disconnected.

1. Disconnect power from the Pi
2. Disconnect power from the DAC

Powering up

1. Connect power to the DAC
2. Connect power to the Pi

Hello Tim

I want to develop a shunt regulated power supply (at least for my Allo Boss dac), and I would like to automate the power up (and down).
How much time does it take to turn on the raspberry after the dac ?

(... probably your question went unnoticed...)

I assume you need to find out how long it takes for the RPi to be fully functional while running Moode after Power ON. This would depend on several factors:
- the model of RPi
- the Moode version
- the booting device the Moode Player is installed upon (quality and speed of the uSD card / USB memory stick / classic or SSD HDD)
- the charasteristics of the RPi power supply

Probably is best if you time yourself the RPi as a 'standalone' player (SSH...?... I guess HDMI goes 'off' at some point but you can try...). Please let us know your findings (and characteristics of your RPi kit) if you succumb to run such tests Wink
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#13
Boot time can be determined by

1. mark the power on or reboot start time using a watch/clock
2. view moode log and record the time of the line below

20181027 092852 worker: Ready

The difference between the two times is the actual time it takes for moOde to boot up and become ready for client connections. It should be accurate within a few secs.

The amount of time it takes to boot up and become ready depends on many factors including how quickly an IP address is assigned by DHCP, the number of renderers that are started, how long it takes to mount any NAS devices that are configured, the speed of the boot media (SDCard or USB drive), the speed of the network, the speed of the Pi CPU etc.

-Tim
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#14
(10-27-2018, 09:03 AM)CallMeMike Wrote: (... probably your question went unnoticed...)

I assume you need to find out how long it takes for the RPi to be fully functional while running Moode after Power ON. This would depend on several factors:
- the model of RPi
- the Moode version
- the booting device the Moode Player is installed upon (quality and speed of the uSD card / USB memory stick / classic or SSD HDD)
- the charasteristics of the RPi power supply

Probably is best if you time yourself the RPi as a 'standalone' player (SSH...?... I guess HDMI goes 'off' at some point but you can try...). Please let us know your findings (and characteristics of your RPi kit) if you succumb to run such tests Wink

RPi 3B or 3B+
moode last version
standard class10 sdcard
Allo Boss.


I guess I do not care much about the booting time of moode+ Rpi.

I just need to know how much time I have to wait after the dac powering to power the rpi

and (perhaps) how much time I have to wait after the powering down of the Rpi to power down the dac.

I just want to automatize the powering up (and down) of these 2 supplies, without associating the software.
Reply
#15
(10-28-2018, 12:57 PM)yannig Wrote:
(10-27-2018, 09:03 AM)CallMeMike Wrote: (... probably your question went unnoticed...)

I assume you need to find out how long it takes for the RPi to be fully functional while running Moode after Power ON. This would depend on several factors:
- the model of RPi
- the Moode version
- the booting device the Moode Player is installed upon (quality and speed of the uSD card / USB memory stick / classic or SSD HDD)
- the charasteristics of the RPi power supply

Probably is best if you time yourself the RPi as a 'standalone' player (SSH...?... I guess HDMI goes 'off' at some point but you can try...). Please let us know your findings (and characteristics of your RPi kit) if you succumb to run such tests Wink

RPi 3B or 3B+
moode last version
standard class10 sdcard
Allo Boss.


I guess I do not care much about the booting time of moode+ Rpi.

I just need to know how much time I have to wait after the dac powering to power the rpi

and (perhaps) how much time I have to wait after the powering down of the Rpi to power down the dac.

I just want to automatize the powering up (and down) of these 2 supplies, without associating the software.

I understand very well your plan. When I started to use two PSUs in connection to a RPi and a HAT DAC I've briefly entertained the wish to set-up an automatic POWER UP/DOWN of the kit but then i became complacent helped by the fact that the RPi/DAC combo is left permanently ON unless I test a new PSU or Tim & Team 'disturb' the peace of my RPi with a new Moode version Big Grin . I always use a quality uSD card and my house is not plagued by frequent power outages...

My empirical rule-of-thumb manual ritual:
- RPi power up 30 seconds after the HAT DAC power up
- HAT DAC power down 30 seconds after RPi power down
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#16
(10-29-2018, 08:21 AM)CallMeMike Wrote:
(10-28-2018, 12:57 PM)yannig Wrote:
(10-27-2018, 09:03 AM)CallMeMike Wrote: (... probably your question went unnoticed...)

I assume you need to find out how long it takes for the RPi to be fully functional while running Moode after Power ON. This would depend on several factors:
- the model of RPi
- the Moode version
- the booting device the Moode Player is installed upon (quality and speed of the uSD card / USB memory stick / classic or SSD HDD)
- the charasteristics of the RPi power supply

Probably is best if you time yourself the RPi as a 'standalone' player (SSH...?... I guess HDMI goes 'off' at some point but you can try...). Please let us know your findings (and characteristics of your RPi kit) if you succumb to run such tests Wink

RPi 3B or 3B+
moode last version
standard class10 sdcard
Allo Boss.


I guess I do not care much about the booting time of moode+ Rpi.

I just need to know how much time I have to wait after the dac powering to power the rpi

and (perhaps) how much time I have to wait after the powering down of the Rpi to power down the dac.

I just want to automatize the powering up (and down) of these 2 supplies, without associating the software.

I understand very well your plan. When I started to use two PSUs in connection to a RPi and a HAT DAC I've briefly entertained the wish to set-up an automatic POWER UP/DOWN of the kit but then i became complacent helped by the fact that the RPi/DAC combo is left permanently ON unless I test a new PSU or Tim & Team 'disturb' the peace of my RPi with a new Moode version Big Grin . I always use a quality uSD card and my house is not plagued by frequent power outages...

My empirical rule-of-thumb manual ritual:
- RPi power up 30 seconds after the HAT DAC power up
- HAT DAC power down 30 seconds after RPi power down

@CallMeMike,

I'm curious how you came to decide something on the order of 30 seconds was necessary? I seldom wait more than 2 seconds between powering up my Allo Boss and powering up my RPi (and the same amount of time for powering down, in the reverse order), and I assumed even that was more than necessary. Did you have a negative experience waiting less than around 30 seconds? 

Regards,
William
Reply
#17
(10-30-2018, 03:58 PM)willyside Wrote:
(10-29-2018, 08:21 AM)CallMeMike Wrote:
(10-28-2018, 12:57 PM)yannig Wrote:
(10-27-2018, 09:03 AM)CallMeMike Wrote: (... probably your question went unnoticed...)

I assume you need to find out how long it takes for the RPi to be fully functional while running Moode after Power ON. This would depend on several factors:
- the model of RPi
- the Moode version
- the booting device the Moode Player is installed upon (quality and speed of the uSD card / USB memory stick / classic or SSD HDD)
- the charasteristics of the RPi power supply

Probably is best if you time yourself the RPi as a 'standalone' player (SSH...?... I guess HDMI goes 'off' at some point but you can try...). Please let us know your findings (and characteristics of your RPi kit) if you succumb to run such tests Wink

RPi 3B or 3B+
moode last version
standard class10 sdcard
Allo Boss.


I guess I do not care much about the booting time of moode+ Rpi.

I just need to know how much time I have to wait after the dac powering to power the rpi

and (perhaps) how much time I have to wait after the powering down of the Rpi to power down the dac.

I just want to automatize the powering up (and down) of these 2 supplies, without associating the software.

I understand very well your plan. When I started to use two PSUs in connection to a RPi and a HAT DAC I've briefly entertained the wish to set-up an automatic POWER UP/DOWN of the kit but then i became complacent helped by the fact that the RPi/DAC combo is left permanently ON unless I test a new PSU or Tim & Team 'disturb' the peace of my RPi with a new Moode version Big Grin . I always use a quality uSD card and my house is not plagued by frequent power outages...

My empirical rule-of-thumb manual ritual:
- RPi power up 30 seconds after the HAT DAC power up
- HAT DAC power down 30 seconds after RPi power down

@CallMeMike,

I'm curious how you came to decide something on the order of 30 seconds was necessary? I seldom wait more than 2 seconds between powering up my Allo Boss and powering up my RPi (and the same amount of time for powering down, in the reverse order), and I assumed even that was more than necessary. Did you have a negative experience waiting less than around 30 seconds? 

Regards,
William
As I said... empirical rule-of-thumb Angel 
As the POWER OFF/ON ritual is happening so infrequent I have not given much thought about a precise timing, let alone testing... I've considered half a minute beeing suffient enough for everything to settle down (and I do not use the watch while I wait patiently so no precision there as well)
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#18
thanks for your replies, guys

I think I'll go for wait times of 2 seconds...
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