QuadMeUp

  • DIY RC radio link: the problem of protocols

    So, you want to build your own RC radio system? Long range maybe? Cool, I want to do it too. Since I’m pretty deep in that topic now, I can give you a hint or two. For example, have you thought about a protocol your radio system will implement? Or rather should I say: protocols?…

  • Hands on: LoRa32u4 II 868MHz LoRa development board

    Idea for Crossbow, DIY LRS system did not appearned in my mind out of nowhere. All my previous LoRa attempts were aimed at telemetry purposes only. E45-TTL-100 are cool, but bulky. If I would want to use them, I would either have to attach Arduino to it or hack it open and reprogram onboard CPU…

  • Hands on: FrSky XSRF3O flight controller

    Since I just started to add support for “old” FrSky XSRF3O flight controller to INAV (expect this in a release after 1.8) it might be a good idea to share few words about it. First of all, it comes in a box. Why am I mentioning this? Because none of my flight controllers, and I…

  • Crossbow LRS second range test

    Looks like crappy range problem from previous post is fixed now. Today I managed to reach 2.8km range with better antennas. The ones I got from LoRa32u4 supplier were NOT 868MHz antennas for sure! 2.4GHz/5GHz probably, hard to tell. Traces on PCB are ~60mm long, so perhaps those are loaded 3/2 monopoles for 2.4GHz or…

  • Crossbow LRS: first range test

    This will be fairly short post. Today I tested range of a prototype of my SX1276 LoRa based LRS Crossbow. Unfortunately, I was not very impressed. Or rather: quite disappointed…

  • QuadMeUp Crossbow LRS: introduction

    Few days ago I mentioned that I'm working on my own DIY long range radio system (LRS) that I named QuadMeUp Crossbow LRS. Today I will share some more details about it. First of all, I'm not creating anything new or "amazing". There are plenty of "DIY" or OpenSource LRS systems. OpenLRS for example. Or…

  • Generate S.Bus with Arduino in a simple way

    Generate S.Bus with Arduino in a simple way

    Did you noticed that lately I write about radios quite often? Well, I do and it’s not a coincidence. Proper introduction for what I’m working on will happen in a next few days, but now I will only write that this will be a mid-range, cheap, DIY radio link for UAVs. By mid-range I mean…

  • E45-TTL-100 not transmitting when connected to Arduino

    While working on one of my project involving Arduino and E45-TTL-100 LoRa 868MHz radio modules, I’ve discovered that it is not working exactly like expected. Documentation states: (…) When the data inputted by user is up to 58 byte, the module will start wireless transmission (…)(…) When the required transmission bytes is less than 58…

  • Project Dualcopter – worklog #3

    It's been exactly one year since my last update on Project Dualcopter. On 20th of October 2016 I've posted that there was a progress. Now, 12 months later, I once gain report, that there was a progress…. That was slow…. I've finally installed control surfaces and servos I've finally decided where LiPo will go: to…