Comments & Feedback

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  SigFox with Sipy not working anymore
  sipy sigfox problem • Dec 28, 2018, 1:11 PM • devinv   Dec 28, 2018, 6:48 PM

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  D Dec 28, 2018, 6:48 PM

  @eric73 Yes, the sequence was exactly my problem. Disengaging solved it :)
• D

  Sipy+Pytrack, Deepsleep and power consumption problem
  pytrack sipy deepsleep problem • Dec 21, 2018, 9:02 PM • devinv   Dec 27, 2018, 10:23 PM

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  J Dec 27, 2018, 10:23 PM

  @devinv it takes a while for a GPS chip to get a fix. You definitely won’t get a position right after wake up, the chip needs to receive ephemeris data, lock onto satellites, compute a position... This has been discussed several times in the forum, search for the relevant topics for details.
• R

  FSK mode on LoPy4
  lopy4 question fsk • Dec 12, 2018, 9:54 PM • robertkeizer   Dec 21, 2018, 5:26 AM

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  Dec 21, 2018, 5:26 AM

  @catalin said in FSK mode on LoPy4: We are compliant with LoRaWAN specifications, as we have certified our modules, and FSK mode is optional. Just fyi, the SX drivers are here: https://github.com/pycom/pycom-micropython-sigfox/tree/master/drivers/sx127x/sx1272 @catalin Where do you see in the Lora Alliance specification DR7 is optional in EU868? BTW, is DR6 implemented? Well, certification means you passed the test but doesn't guarantee full compatibility. Also, on the competitive side you are missing a feature supported by nearly all others.
• P

  Powerconsumption in SleepMode high.
  lopy4 power sleep consumption sleep mode • Dec 14, 2018, 3:17 PM • ProtonX   Dec 15, 2018, 10:10 AM

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  Dec 15, 2018, 10:10 AM

  @protonx Look at : microsd-power-consumption-on-expansion-board-pytrack-pysense-etc "Conclusions to save power during deep sleep with Expansion Board : it is important to use only TX/RX jumpers, or else we will have extra 0.06 mA; large voltage values implies some extra (e.g., 0.02) mA; avoid using uSD cards, because even just inserting a uSD card, not mounted, without open files before deep sleeping, there is an increase in deep sleep current, depending on the type of uSD, e. g., extra 0.21-0.24 mA for a 8GB uSD, extra 0.12-0.14 mA for a 32GB uSD."
• C

  ESP32 low power: 1 core and 80Mhz
  wipy frequency low power • Dec 8, 2018, 8:03 AM • Colateral   Dec 8, 2018, 1:21 PM

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  J Dec 8, 2018, 1:21 PM

  @colateral I believe that the Pycom firmware uses one core for networking and the other to run the actual MicroPython code, or something similar. Not sure how easy it would be to disable one of the cores altogether. There has been discussion about changing the frequency though, there must be a thread somewhere in the forum with instructions IIRC.
• D

  Uasyncio Support
  micropython wipy3.0 sockets uasyncio asyncio • May 8, 2018, 8:44 AM • donikuy   Dec 5, 2018, 3:08 PM

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  Dec 5, 2018, 3:08 PM

  @martijnthe I have to check that again. As far I recalled, I tested the wrap-around situations.
• T

  Optional extras accessories: Barcode Reader, Fingerprint Scanner, Infrared Image Sensor...
  webshop optional extras accessories • Oct 18, 2018, 7:01 AM • thibault   Nov 6, 2018, 1:03 PM

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  T Nov 6, 2018, 1:03 PM

  Ok Thank's
• R

  Pymate registration
  pymate reg • Jan 7, 2018, 8:23 AM • Roy Boy   Nov 5, 2018, 11:50 AM

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  Nov 5, 2018, 11:50 AM

  @robmarkcole Pymate is not maintained at the moment
• S

  GPy LTE-Direct applications
  lte • Nov 1, 2018, 3:55 PM • Silver   Nov 1, 2018, 3:55 PM

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  This topic is deleted!
  Oct 19, 2018, 4:55 PM • bernd   Oct 19, 2018, 4:55 PM

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• E

  Provider Examples
  example nb1 germany telekom overview • Oct 10, 2018, 10:15 PM • Elizar   Oct 11, 2018, 8:43 AM

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  Oct 11, 2018, 8:43 AM

  @elizar Hi, it is a good idea, I've set up a new topic last week for Wireless Technologies which includes a Cellular subtopic. My idea was to have this conversation there, so you wouldn't have to search through multiple topics. Hope this helps!
• P

  lte.connect() CID and its purpose
  gpy lte connection cid • Sep 25, 2018, 6:20 PM • panda   Oct 5, 2018, 3:51 PM

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  Oct 5, 2018, 3:51 PM

  @panda try lte.send_at_cmd('AT!="setDbgPerm full"') before using the command lte.send_at_cmd('AT!="RRC:showDetectedCell"')
• F

  Python Interface
  wipy wipy3.0 wipy 2 connect interface • Sep 7, 2018, 12:41 PM • FedeSilvi   Sep 29, 2018, 9:11 PM

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  P Sep 29, 2018, 9:11 PM

  @fedesilvi I recommend you try PySimpleGUI It's much easier to program a GUI in PySimpleGUI than PyGame. Do you have tkinter on your platform? You should be able to hook up your GUI to anything you want. To display your information, read the data using your code, then plot the data using a Matplotlib / Pyplot call. You can then display that graph in your GUI. There is extensive documentation on how to use it and there are several example programs posted the demonstrate hooking it up to Matplotlib.
• M

  Get rssi from received message (P2P)
  rssi p2p • Sep 19, 2018, 8:33 AM • mikemx55   Sep 27, 2018, 4:20 PM

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  M Sep 27, 2018, 4:20 PM

  Just adding to the answers already here: https://docs.pycom.io/firmwareapi/pycom/network/lora#lora-stats
• L

  Battery consumption in datasheet
  lora lte battery consumption battery life • Sep 19, 2018, 2:41 PM • lukesaber   Sep 19, 2018, 4:17 PM

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  J Sep 19, 2018, 4:17 PM

  @lukesaber To compute your power requirements, if you are running a "wake up, send data, go back to sleep" pattern: define T as the duration in seconds of reference period of your choice (1 hour = 3600, 1 day = 86400...) define N as the number of times your device will wake up in that period define D as how long your device will we awake each time it wakes up (in seconds) define IA as the power consumption when awake (in mA, but you can use any unit as long as it's the same for IS and the result) define IS as the power consumption when sleeping (ditto) Then the average power consumption is: (N * D * IA + (T - N * D) * IS) / T Example: T = 3600 (1 hour) N = 3 (wakes up 3 times an hour) D = 10 (stays awake for 10 seconds) IA = 100 mA (average power consumption while awake) IS = 0.010 mA (10 µA, average power consumption while sleeping) Then the average power consumption is: (3 * 10 * 100 + (3600 - 3 * 10) * 0.010) / 3600 = 0.84325 mA If you want to have enough power for 2 days, then you need a battery with a 40 mAh capacity (0.84325 * 24 * 2). I think nearly any battery will do. Now, the exact figures for D, IA and IS can vary a lot, based on: what sensors/peripherals you may have that you need to power, and whether you power them all the time or only when you are awake what you need to do while awake how you send (LoRa, SigFox, LTE, Wi-Fi, BLE...), at what power level, at what data rate how long it takes for handshakes, ACKs, receive windows, etc. and probably a lot more things. Ignoring any sensors or other peripherals, while awake, the power consumption is usually somewhere between 50 mA (module active, not sending or receiving) and 200 mA (when sending). How long you stay awake will usually range between 3 and 10 seconds. Power consumption during deep sleep should be somewhere between 10 and 20 µA depending on the exact setup. So with 3 wake-ups per hour, for 2 days of battery life, your worst case scenario, not counting any sensors or peripherals, (200 mA when active, 10 seconds active, 20 µA in deep sleep) is about 80 mAh. You need to add the requirements for your sensors/peripherals on top of that. If you don't go to deep sleep for whatever reason, then the figures are drastically different, but you can keep the same logic. Just replace IS with the power consumption while idling.
• G

  RSSI vs TOA for calculating distance - Can LoPy4 Support TOA?
  lopy4 rssi time of arrival distance calc • Sep 16, 2018, 6:36 PM • gt2rs   Sep 17, 2018, 5:07 AM

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  Sep 17, 2018, 5:07 AM

  You can't use TOA I think with any PyCom hardware.
• G

  Sending SMTP Email
  lopy gpy wipy3.0 connect smtp • Sep 12, 2018, 7:50 PM • guyc   Sep 14, 2018, 6:35 PM

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  L Sep 14, 2018, 6:35 PM

  I have email send method implemented in my MycroPython port as a part of the curl module. I think it could be easily ported to Pycom's MicroPython (curl_mail.c, modcurl.c)...
• R

  lte.connect Connection ID (cid)
  modem lte m1 cat m1 lte roaming • Aug 31, 2018, 5:19 PM • RWall   Sep 4, 2018, 9:05 PM

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  P Sep 4, 2018, 9:05 PM

  Also wanting to know more about the function of the CID.
• T

  Huge problems with moving documentation
  documentation website pycom url • Jul 19, 2017, 12:23 PM • tveito   Sep 4, 2018, 11:59 AM

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  S Sep 4, 2018, 11:59 AM

  Hi @dan, Just tested it for some pages and it works. Thank you very much! Side node: Since you renamed your pages the docs only show in google if you add site:docs.pycom.io.
• N

  Daniel left github
  github • Aug 23, 2018, 9:39 AM • nubinac   Aug 27, 2018, 8:00 AM

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  Aug 27, 2018, 8:00 AM

  @bmarkus Personal Time Off