Yes 
This is how itās supposed to goā¦ Iām glad you have all of these tools.
Yeah the programmer shield v2 is fairly involved to setupā¦ weāre working on making it easier, but most of us are still on yosemite because of various support issues with el capitan thus far. Weāll get there though when things catch up.
Aight signing off 
have a good one and thanks for doing work! 
After further testingā¦ I have a theoryā¦
I set the photon to deep sleep when the percentage of battery remaining is bellow 30%ā¦ But then the battery getās drained during the deep sleep, or during the attempts to awake from deepsleepā¦
Then the battery goes bellow the level where it can power the photon and keep it in deep sleep or runningā¦ After the solar cell puts a little charge in the batteryā¦ it re-bootsā¦ But itās too little power to sustain use and then it drains quicklyā¦ And then it goes dead after booting because the battery canāt afford to give enough power to sustain the boot or photonā¦
And then the whole cycle goes on and on on a loopā¦ Causing it to eventually lock or screw up the boot loaderā¦ I guess because of the repetitive attempts to boot and then the low power condition.
So I guess this is not a photon issue. It is more an implementation issueā¦ I guess I have to give separate power sources to vVolt from another battery just to keep up with the behavior of deep sleepsā¦ And shutdown the photon completely (have to figure out a way doing this) when the power goes bellow a thresholdā¦
And rebooted when the power is recoveredā¦ So instead of deep sleep I need a feasible way to shutdown completelyā¦ and restart when thereās enough power.
Thoughts?
Hi,
I have the same problem with one of my Photons. My code works well on Core. I flashed the same code to 2 new Photons. Oneās worked till now. The second worked for 3-4 days and suddenly stopped. Now when power on blue LED at D7 pin comes on, RGB is off. Voltage on 3.3V pin: 3.32V, on RST pin 3.29V and 0.0V when pressed. When I put it in Safe mode it flashes magenta but more rapidly than usual. Because I have neither St link nor JTAG is there a chance to find out is my Photon dead or not?
Stupid question. Had you tried flashing it after safe mode?
Yes. Both flashing custom code and tinker were unsuccessful. Although the Photon flashes magenta I think it is not in safe mode.
Is it flashing magenta or breathing magenta?
If it is flashing magentaā¦ Leave it there and wait for a little bitā¦ It seems to be flashing new system firmware for the photon.
Leave it alone for 5 minutes and see if it starts breathing againā¦ The magenta flashing can be intermittent.
It flashes magenta infinitely. No sign to finish.
Il wait for better brains to commentā¦ But I am thinking a factory reset is in order if you canāt get it to go to safe mode. But I saw elsewhere that factory reset was not recommended soā¦ Il wait for better brains.
My guess is that as long as it is flashing or doing something with the RGB thereās hope
Had you tried entering DFU mode?
I tried. After magenta the Photon starts flashing yellow for 2 sec., after that 2 sec off, and itās repeated. Because I am afraid it isnāt DFU mode so didnāt try any thing.
Connect it to USB try to put it in DFU mode and try flashing it using the cli tool in the command lineā¦
It is weirdā¦ The modes you are describing are unfamiliar to meā¦ However the fact that it is responding to some input it is reassuring that the device might be restored.
Noticing that the people from Particle hasnāt shown up hereā¦ I would send an e-mail to support.
@frlobo: thank you for your support.
Itās weekend so I think people from Particle off work. 
They usually respond even in weekends and at late hours of the nightā¦ They are owls! Workaholics!! They most be on a convention or somethingā¦