Category: Radio

  • Crossbow LRS, I’m still doing this wrong…

    Only two weeks ago I thought I solved all my major problems with DIY LoRa RC link. I was wrong. I was able to solve one problem (link unstable due to rouge packets messing up with protocol decoding), but an old problem came up again: PPM input from Taranis is no longer stable. At least…

  • iRangeX IR8M: when you clone too much, but that is not a bad thing after all

    I love chinesium and admire chinese manufacturers very much for a simple fact: some time ago they stopped just cloning. They started to create new things based on “legit” ones. Just look at iRangeX iRX-IR8M 2.4G 8CH Multi-Protocol Transmitter. Doesn’t this thing looks almost like Team Black Sheep Tango radio transmitter? Well, it is at…

  • Crossbow LRS, I was doing this wrong…

    Last update on Crossbow LRS DIY RC link I'm currently building was 2 weeks ago. Back then, it did not went well: crashed an airplane beyond field repair. Last weekend I was able to do what I planned, but that did not went well as well. This time from completely different reason… Link was catching…

  • Crossbow LRS, range test that did not went well….

    Yestarday I wanted to make a first “real” range test of my DIY LRS system. “Real”, because RX was supposed to be on a flying wing, but only as an passenger. Actual control was supposed to be happening via FrSky X8R. Crossbow RX was only to measure RSSI and check for failsafes. It, well, did…

  • 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…

  • 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…

  • 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…