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  • Camel's Avatar
    02-01-2019, 12:42 AM
    Just a little update I got the PCBs from oshpark and assembled them, discovered mistakes and had to do microsurgery to reroute traces using strands of wire. The switch has 6 ports and is using DMA for writing and...
    14 replies | 502 view(s)
  • Camel's Avatar
    12-30-2018, 06:21 AM
    Here is the repo https://github.com/supercamel/PicoLAN Code will be going up shortly. It needs a bit of a tidy up and it's completely untested on any real hardware.
    14 replies | 502 view(s)
  • Camel's Avatar
    12-30-2018, 05:52 AM
    I hadn't heard of nanopb! Just reading the nanopb docs on github, it seems like it's basically the same thing. Some points of difference are C3 is C++ not C, which is just a personal preference thing really and C3...
    5 replies | 223 view(s)
  • Camel's Avatar
    12-30-2018, 12:49 AM
    Looking a bit better, so should run on UNO/Nano no worries. Walk in the park for Teensy 3.x. 6 port switch design sent off to osh park. Woot!
    14 replies | 502 view(s)
  • Camel's Avatar
    12-28-2018, 06:04 AM
    Alright, well, I've got something working for reliable transfers. It is client/server based with multiple connection states . . . :rolleyes: Sort of superficially TCP-like but lacks flow control and many of the other...
    14 replies | 502 view(s)
  • Camel's Avatar
    12-27-2018, 04:30 AM
    There is no checking for missing frames with datagrams. The socket implementation just blasts out data and hopes for the best. There is error checking at the frame level, but it's just check sums so if there's a corrupt...
    14 replies | 502 view(s)
  • Camel's Avatar
    12-27-2018, 02:54 AM
    Builds for Arduino Nano & most likely will for Teensy but I've been getting some weird errors with compiling anything for Teensy so need to look into that . . Unfortunately for UNO / Nano just this basic example uses...
    14 replies | 502 view(s)
  • Camel's Avatar
    12-26-2018, 01:48 PM
    Alright, I'm doing this while I've got some holidays. Brief description: it's a LAN kind of like your home network, except it runs on Arduino/Teensy and uses UART. Going with 'picolan' for the project name. For...
    14 replies | 502 view(s)
  • Camel's Avatar
    12-25-2018, 03:22 AM
    Purpose is simply to enable a bunch of devices to talk to each other, with built in layers of abstraction that facilitate real-time messaging through datagrams, or reliable transfers through streams, and separation of...
    14 replies | 502 view(s)
  • Camel's Avatar
    12-25-2018, 02:07 AM
    I've been toying with the idea of using a switched packet network for a robotics project. A switched packet network, as I understand it, is a network where all devices on the network connect to a switch device, and...
    14 replies | 502 view(s)
  • Camel's Avatar
    12-25-2018, 12:16 AM
    Nice. I'm developing a GCS at work at the moment. Not sure what I could publicly say about it, other than it's designed by UAS operators for UAS operators (as opposed to autopilot developers who tend to make a GCS...
    22 replies | 1189 view(s)
  • Camel's Avatar
    12-24-2018, 11:53 PM
    Or you could use two op amps, one as a precision rectifier and one as a sign indicator. That'd work! (yeah i'm not an electronics guy, i'm just bored)
    23 replies | 571 view(s)
  • Camel's Avatar
    12-24-2018, 11:14 PM
    You could use a MOSFET rectifier and an op amp. This would give you one analog input from the rectifier that indicates magnitude of current flow, and the op amp gives you a digital I/O that indicates the sign (charging...
    23 replies | 571 view(s)
  • Camel's Avatar
    12-24-2018, 10:40 PM
    I'd be inclined to use a 50A bi-directional ACS758 if possible. You can measure from this sensor directly from an analog pin.
    23 replies | 571 view(s)
  • Camel's Avatar
    12-24-2018, 10:22 PM
    How have you been finding the beagle bone with it's non-guaranteed responsiveness? I toyed with a raspberry pi for flight stabilization and found it missed intervals by up to 600ms at times. Probably OK during cruise...
    22 replies | 1189 view(s)
  • Camel's Avatar
    12-24-2018, 09:59 PM
    Yeah, kind of like protobufs, except it's designed with embedded in mind. Here's some example Arduino code based on the blinky.json file in the github repo #include <c3.h> typedef ccc::C3Link<class Coms,...
    5 replies | 223 view(s)
  • Camel's Avatar
    12-24-2018, 09:38 PM
    Hi, Cool project. I used a Teensy for a flight controller a few years ago, it's a solid unit. I had a look through your githut & saw commits by Curtis L. Olsen. I guess you are using FlightGear for SIL/HIL...
    22 replies | 1189 view(s)
  • Camel's Avatar
    12-24-2018, 12:22 PM
    Hello, I'm having a tinker with an old project and thought I'd share it. It deals with the problem of getting information from one device to another. This is such a common issue, nearly every non-trivial robotics...
    5 replies | 223 view(s)
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