Yep, a protected Li-ion battery, cylindrical 18650 forme, was kindly delivered by Amazon this morning, but the battery holder with solder tags is still en route so for the moment I can't add this functionality.
I've assumed soldering in both 4-pin/socket headers to the BBB/Hermes in the 'BATT' location to allow mating is fine for the moment, and won't disrupt performance.
Assuming further; only when the battery is actually wired in should I bridge the 2 pads of J1 to allow recharging, is this correct?
Otherwise physical build of Hermes/cronos/rhea has gone swimmingly well so far, confident of it. I can post step by step pictures if it will be of help to others.
However, hit a brick wall on the Botic install. Can't get the SD image to boot and wondering if anyone can give some hardware advice?
BB hooked up to usb-usb cable, SD card inserted into BBB. Pressing the boot button down, insert usb into laptop to power up and ... nix. Power LED goes on on BBB and that's it. No more LED action, BBB goes quiet. That can't be good.
Tried same but with a network cable from router direct into BBB as well and same process with same results. Router is not registering the BBB as a client and no IP address for it. Suspect something super obvious, but without IP address or some life in the BBB, can't move on to Mieros final instruction to 'use it' via ssh or http and get on with mounting music library hard drive.
any suggestions gratefully received
Ced
I've assumed soldering in both 4-pin/socket headers to the BBB/Hermes in the 'BATT' location to allow mating is fine for the moment, and won't disrupt performance.
Assuming further; only when the battery is actually wired in should I bridge the 2 pads of J1 to allow recharging, is this correct?
Otherwise physical build of Hermes/cronos/rhea has gone swimmingly well so far, confident of it. I can post step by step pictures if it will be of help to others.
However, hit a brick wall on the Botic install. Can't get the SD image to boot and wondering if anyone can give some hardware advice?
BB hooked up to usb-usb cable, SD card inserted into BBB. Pressing the boot button down, insert usb into laptop to power up and ... nix. Power LED goes on on BBB and that's it. No more LED action, BBB goes quiet. That can't be good.
Tried same but with a network cable from router direct into BBB as well and same process with same results. Router is not registering the BBB as a client and no IP address for it. Suspect something super obvious, but without IP address or some life in the BBB, can't move on to Mieros final instruction to 'use it' via ssh or http and get on with mounting music library hard drive.
any suggestions gratefully received
Ced
Sorry for the delay in answering (I just returned from an intense business trip) - you can install the jumper (I just bridge it with solder) and the header any time - with or without the battery. Once you have the battery sorted just wire it in observing correct polarity.
Not complaining - but this line of questions would have more relevance on the Hermes-BBB thread. It would be easier for folks looking for the same answer to find.
Cheers!
Russ
Apologies if this has been asked/answered before, but would I be correct in the assumption that the slower clock goes in the X1 position?
Yes you must connect GND unless the Cronus and the BII share a common power supply (in which case GND is already connected)
The Cronus shares a power supply with one of the Buffalo II boards, but the other is powered from a separate Placid. I guess they all go to the same power ground though?
I would like to do that, but it's not so straightforward on the Buffalo II is it?
I wanted to make sure it worked asynchronously first (which it does!).
I wanted to make sure it worked asynchronously first (which it does!).
The jumper only sets the clock division into the hermes. It does not matter if you have one clock or two. If the clock is 22/24Mhz you will typically use the 1:1 (no division) setting. if it is 45/49Mhz then you will typically use the 1:2 setting.
I'm not sure if this is the right place to ask this trivia:
There is a pad on the other side of the Rhea board, probably reserved for a buffer cap between Vcc and GND. I'm curious to apply a 0.1uF to it. Is this okay or redundant?
TIA
There is a pad on the other side of the Rhea board, probably reserved for a buffer cap between Vcc and GND. I'm curious to apply a 0.1uF to it. Is this okay or redundant?
TIA
Not a bad question at all.
It is a spot for additional bypass cap. It is fine to use it. Some XOs don't include a built in bypass cap and for those XOs you will definitely want it.
Cheers!
Russ
Hi Russ,
Just received my Cronus + Hermes-BBB now, any build guide? BOM ? How to start ? I am using 9023 DAC with I2S input.
Thanks
Just received my Cronus + Hermes-BBB now, any build guide? BOM ? How to start ? I am using 9023 DAC with I2S input.
Thanks
No guide yet. Depending on your level of expertise, you should be able to figure things out by reading the threads on here (which aren't too big as of yet).
The only real soldering is the resistors, LEDs and headers/terminal blocks (depending on how you want to install - do a test mounting before soldering).
I have found the following posts to be most helpful on the hardware front:
http://www.diyaudio.com/forums/twisted-pear/272053-hermes-bbb-botic-cape-beaglebone-black-9.html#post4300293
http://www.diyaudio.com/forums/twisted-pear/250583-building-open-embedded-audio-applicance-118.html#post4200187
http://www.diyaudio.com/forums/twisted-pear/273362-hermesbbb-cronus-opus.html#post4302644
http://www.diyaudio.com/forums/twisted-pear/273362-hermesbbb-cronus-opus-2.html#post4307499
http://www.diyaudio.com/forums/twisted-pear/273362-hermesbbb-cronus-opus-2.html#post4307840
http://www.diyaudio.com/forums/twisted-pear/273362-hermesbbb-cronus-opus-3.html#post4307859
http://www.diyaudio.com/forums/twisted-pear/272053-hermes-bbb-botic-cape-beaglebone-black-16.html#post4307411
For miero's wonderful Botic software, go here: http://bbb.ieero.com/