LoPy

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  OTAA join problems Australia
  • Graeme  

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  @oligauc Thank you for your reply. AS923 is supported on many TTN gateways in Australia, this, is in part due to the proliferation of cheap devices coming out of Asia made specifically for AS923. Look at the TTN map and you'll notice dual antennas at a single site especially in Sydney
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  Connecting Lopy and Arduino
  • spnear  

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  LoPy4 soft access point
  • lazabre01  

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  @lazabre01 You can create an STA_AP, however wifi bridging is not possible.
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  howto minimise Lopy deep sleep current?
  • achalmers68  

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  How to set the Pin mode for machine.deepsleep?
  • KenM  

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  @KenM Welcome to the pin cutters club (https://forum.pycom.io/topic/1673/pysense-pinout-wake-on-pin/19) :-/
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  Debugging on the LoPy
  • betabrain  

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  Python has a debugger , which is available as a module called pdb . It supports setting conditional breakpoints , stepping through the source code one line at a time, stack inspection, and more. import pdb msg = "this is a test" pdb.set_trace() print(msg) Insert pdb.set_trace() anywhere and it will function as a breakpoint . When you execute the script by python test.py, you will in the debug mode.
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  Making a LoRaWAN (US915) Between LoPy4 and Dragino OLG01
  • spnear  

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  @spnear The Dragino is a single channel gateway. As long as the channel frequency and the datarates of Lopy4 and gateway match, you should see packets on TTN. The Dragino is similar to the Pycom NanoGateway
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  This topic is deleted!
  • Angela_Wilson  

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  This topic is deleted!
  • Angela_Wilson  

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  L01 internal pulldown resistor for safe mode pin?
  • Joe Mulder  

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  @Joe-Mulder I did not use any of these modules. However, P12 is only sampled for safe boot on reset, which may however be a reset after deepsleep or similar,
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  Object with buffer protocol required
  • phusy012  

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  @robert-hh Thank you so much. Thank you for correcting me. Yes now I am able to send successfully.
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  This topic is deleted!
  • Graeme  

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  [Solved] Solar Charging a LoPy
  charging solar panel • • roadfox  

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  @livius I think you're right about the damage - my solar panel produced 7v and fried my expansion board.
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  Test connection LoPy4 and Arduino-Dragino Shield
  • Velkamhell  

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  @Velkamhell I cannot tell from the code, where you set the transmission parameters like frequency, spreading factor and bandwidth. Just setting the region is not sufficient. The EU868 region allows the frequency to be set between 863 and 870 MHz. Unless these match at both sides, you will not receive anything. For Lopy devices, the default for the frequency is 868 MHz, the default for spreading factor and bandwidth is 7 and 125 kHz (SF7BW125). The Arduino-Dragino shield may have different defaults. Another note: I did not follow that further, but I have the impression, that Pycom devices always need at least a hard reset, if not a power cycle, to get proper operation of the LoRa circuit. After a soft reset LoRa does not seem to work.
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  Sending ASCII from lopy4
  • phusy012  

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  @phusy012 Assuming that you node and server are close-by, packet loss due to poor reception is unlikely. So it might still be, that the channel configuration of node and server do not match, and sometimes the node uses channels at which the server does not listen.
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  Does LoPy or FiPy has TCXO for sx1276?
  • jacksonhu2207  

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  Testing nanogateway with lorawan devices
  lopy4 lorawan lorawan otaa nanogateway • • serafimsaudade  

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  @mfalkvidd Hi, tks for the reply. Ok, that explains the problems that I have.
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  LoRa Raw Network, how many nodes possible ?
  • gaet  

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  That is a great explanation, thank you.
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  LoPy4 stopped working, gets hot
  • HenroRitchie  

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  nvram lopy Errno 100
  lopy pysense error • • han  

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  Hey! Did you solve it? I am having the same problem... Can't fix it. Thanks!