LoPy

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  [SOLVED] LoPy SD card data saving
  lopy lora sd card • • Iplooky  

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  @robert-hh f.flush() works just fine. Thank you a lot! It really helped me !
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  Official pycom LoRa/Sigfox Antenna datasheet
  lopy antenna lora antenna datasheet pycom antenna • • neleba12  

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  The best I could find is an antenna that seems to match, at this website: 1/2 wave swivel antenna
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  LoPy OTAA query in documentation -Change in Auth params in OTAA
  otaa documentation lopy lora • • shivankgarg98  

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  @prawnhead It' less a bug in the firmware, than the way the device is handled by the user and some interference with the background database at Pycom, which keeps the assigned dev_uid. The dev_uid is stored in the device's flash and can be written to that using the updater tool. So you have three elements (flash, user, background system), which have to interact correctly, and there are few way to succeed and many ways to fail.
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  This topic is deleted!
  • remcohn  

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  Updating Firmware using WiFi
  lopy4 wifi firmware update • • ClementDecaux  

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  @clementdecaux Not only is there no USB support directly on the LoPy (I guess you connected to the UART lines), but additionally USB is 5V while the LoPy only supports 3.3V...
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  Reading analog voltage with ADC and attenuation
  adc sensor attenuation • • jojo  

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  the scale factor is Vcc / 5120 per 1 mm
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  Deep Sleep shield stopped working
  deepsleep shield • • jubbs  

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  @jcaron @jubbs I used my administrative powers to update the above post adding the correct code tags.
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  LoPy serial stops after a few seconds
  serial • • ekwus  

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  Yep, Put a 10k and a 0.01uF on the RST to 3.3v and see almost no noise now on the RST pin. Went form running for less than 30 seconds to... well it just seems to keep working now. I am pretty sure the is the same issue, wanted to post to help people like myself in the future.
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  How to restart WLAN connection?
  lopy4 wlan lopy-wlan wlan.station • • lsoria  

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  do you know the RF parameters of lopy?
  lopy power gain sensitivity • • jclo13  

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  @bmarkus said in do you know the RF parameters of lopy?: LoRa Calculator tool Thank you, I will try it, but I want to know the values of the parameters mentioned, maybe you can give me them if you have it. thank you
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  Upload failed.: OSError: [Errno 22] EINVAL with LoPy4 and PyMakr
  lopy4 pymakr expansion board • • christian_kohler  

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  @christian_kohler Did you set Filezilla to single link/passive mode? The number of simultaneous links have to be set in the server settings submenu->transfer settings for each connection. I'm using ftp all the time, and it is pretty reliable and fast. SInce I have Firfox open all the time anyhow, I prefer the FireFTP plugin.
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  LoPy4 not connecting to Sigfox Public Network
  lopy4 sigfox public network • • xorlover  

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  [SOLVED] LoPy LoRa general consumption/effiency (code and scope printscreen)
  lopy lora lora antenna • • Iplooky  

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  Hello @braulio. I think the extra milliseconds are from Lopy info processing, you can try with a different number (10 seconds, 20, 30 etc) and the "extra" time is the same then you have a solution. Also you hsould try to make a new post, the topic is quite different from this one.
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  Pysense Output pins
  pysense adc pinouts output • • Iplooky  

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  Unknown fault
  lopy lora lopy lopy wifi send data • • zceld  

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  Converting float to bytes
  convert to byte • • AidanRTaylor  

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  @aidanrtaylor Yes, you need pack() to make a bytes string out of a float, and unpack() will convert that back. unpack() returns a tuple, wheras pack() in addition to a tuple accepts a single value.
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  Uploading code to the Lopy 4 without pymakr
  lopy4 pymakr linux • • Re  

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  @re The LoPy4 has like any xxPy device a WiFI connection and starts both a FTP and Telnet server. So you can use ftp and suitbale ftp clients like FileZilla and FireFTP to manage files on the LoPy4. see the FTP section of the docs: https://docs.pycom.io/chapter/gettingstarted/programming/FTP.html You can configure both clients to donwload/upload files into the editor of your choice when you double-click them in the devices file pane.
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  Lopy4 serial connection troubleshooting
  lopy4 serial linux • • Re  

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  I found out what was the problem: not the cable, not the up to date expansion board3, but simply the out-of-date lopy4 firmware. Updating it fixed it!
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  LoRaWAN FCnt size 16 or 32 bit?
  lopy lorawan • • bmarkus  

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  @bed said in LoRaWAN FCnt size 16 or 32 bit?: @bmarkus The PyCom LoraWAN stack uses 32 bits for the uplink and downlink frame counters, even though only the bottom 16 bits are transmitted / received. Thanks!
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  Post Size in http server
  lopy lora python http post • • AHellLycan  

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