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      Abbreviated rules   07/28/2017

      Underdawg did an excellent job of explaining the rules.  Here's the simplified version: Don't insinuate Pedo.  Warning and or timeout for a first offense.  PermaFlick for any subsequent offenses Don't out members.  See above for penalties.  Caveat:  if you have ever used your own real name or personal information here on the forums since, like, ever - it doesn't count and you are fair game. If you see spam posts, report it to the mods.  We do not hang out in every thread 24/7 If you see any of the above, report it to the mods by hitting the Report button in the offending post.   We do not take action for foul language, off-subject content, or abusive behavior unless it escalates to persistent stalking.  There may be times that we might warn someone or flick someone for something particularly egregious.  There is no standard, we will know it when we see it.  If you continually report things that do not fall into rules #1 or 2 above, you may very well get a timeout yourself for annoying the Mods with repeated whining.  Use your best judgement. Warnings, timeouts, suspensions and flicks are arbitrary and capricious.  Deal with it.  Welcome to anarchy.   If you are a newbie, there are unwritten rules to adhere to.  They will be explained to you soon enough.  


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About allene222

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    SF Bay
  1. How to build large format display

    The nmea sentences are sensor centric rather than display centric. At least the nmea-0183 ones are. I don't know about the nmea-2000 sentences. By sensor centric I mean there is a sentence for boat speed and heading and another for wind speed and direction and then one for GPS. The flow of the data is sensor -> correction -> calculation -> display. I create one nmea sentence that has the result of the calculations so there is sentence that has all the things I might want to display in it and it is sent UDP to the displays. The display can then pick off what it wants to display without doing calculations. There are other sentences for start and for going around the marks. They are all display centric and represent corrected and derived data. I do have the advantage that the committee is very small, like me with occasional input for a couple of other users. Some of these fields would be left out as they are more diagnostic than user data. I see that I left out SOG and COG and I should probably have included them although what I want is current, which is derived from four measurements. 2 - corrected.bs, 1/100 knot 3 - corrected.hdg, degrees 4 - corrected.awa, degrees 5 - corrected.aws, 1/10 knot 6 - corrCalc.tws, 1/10 knot 7 - corrCalc.twa, degrees 8 - corrCalc.twd, degrees 9 - corrected.leeway, 1/10 degree 10 - corrected.heel, 1/10 degree 11 - tws_c, 1/10 knot 12 - twd_c, degrees 13 - correction_on, (0/1) 14 - timestamp, int 15 - corrected.depth, 1/10 meter 16 - current, 1/10 knot 17 - current, degrees Trying to get an industry group to agree on this might be difficult. Somebody would have an AC boat going 40 knots and somebody would have a power boat. Remember what a camel is --- a horse designed by committee. I would like to make the point about correction. My wind vane has an 8 degree error in it DDW compared to directly into the wind. If you don't take that out, you can't hope to make any derived calculations like TWD. The senders need to be corrected first, then the desired quantities calculated and finally displayed.
  2. How to build large format display

    Our goal is 100 meters and we tested it to 200 meters. But this is with the units right on the water. That was our problem as we need to mount them on the stern of a 470 and we needed near zero signal loss. If you get them off the water, like 5 feet up, they went all the way across the lake, which I think was 1/2 mile. But for our application, 100 meters is a long way away. With the AC boats, they had the antennas on the top of the mast and the shore one on the top of a big pole.
  3. How to build large format display

    My guess is that live tracking might be better using a phone on consumer level. I am using XBee 900MHz on the project I am working on for communication between boats. It is really hard to communicate over water because of the reflections off the water canceling the direct path. It took a ton of work to solve it, which we did.
  4. How to build large format display

    Yeah, I have CAT5 cable strung all around my house. Would never trust WiFi in my house. But seems to me the trend is toward WiFi. My boat is small and even my simple unreliable protocol is working just fine. It would seem to be that any product designed for very small boats, like Olympic class boats, would need to be WiFi. That is certainly what we found on a project I am doing for our Olympic team. The displays are battery powered and WiFi to the main box.
  5. How to build large format display

    It is amazing to me that a standard that is so closed could have been widely adopted. I guess it is designed by the big players to keep the little players, like you, out of the game. I use nmea-0183 sentences over WiFi. Who needs wires? Maybe we can standardize that. Allen
  6. Dropping my Cal 20 keel

    If you don't ever want to undo it, why are you undoing it?
  7. Dropping my Cal 20 keel

    I once watched a guy take all the bolts out of his keel and lift the boat --- and the keel. Somebody bedded it with 5200. Don't do that. Basic rule is never use 5200 on a boat. Good for holding a soap dish to the wall of your shower at home, but keep it off your boat. I don't know what one should use, maybe tar paper, but not 5200.
  8. How to build large format display

    Keep it in the shade. Not good in sunlight.
  9. How to build large format display

    The ESP8266 or the new ESP32 are well supported and do this job easily. Much better fit than a Raspberry Pi. The ESP8266 is $3. It has WiFi and lots of IO. I have coded them to drive the LCD segments as well as a Stowe Terminal. The terminal differs from a standard display in that you write text to it rather than standard nmea sentences to you can write anything you want. I use it with StartLine to write time to burn to the start line or time to the next mark. Easy to write four up with custom titles. But that is not a mast display. I had help building it from a sailor I work with in Australia and am fine helping others to return the favor. The digits I used are not backlit but they are huge. Fits my needs although backlit would obviously be nice. I also use smaller digits that are backlit but I don't think I have ever hooked up the light.
  10. Dropping my Cal 20 keel

    You can't be talking about the cal group.
  11. Dropping my Cal 20 keel

    Join the Yahoo group for Cal Boats. There are several Cal-20 owners there and they will be most helpful. It is a great group of very knowledgeable people.
  12. Barn Find Cal 40

    I think the plywood comment is in reference to the Csl-40. I recall talking to Sally when she and Stan we're restoring Illusion. She said they poured gallons of get-rot in the hull. The boats have inner and outer glass layers with plywood between. This makes them lighter and stronger than a solid glass hull. Ok, that is just wrong... lighter for the same strength or stronger for the same weight. Better... But the wood rots thus the get-rot
  13. How to build large format display

    I have done that. The digits are big LCD dingle digit displays. I built a PC board for four digits. Glued two together to make a two high display in a clear top nmea Bud box. They are driven by a Wemos D1mini ($3). The digits are about $4 and the lcd driver is about the same. Mounted on a single TackTick mast mount. Perfect fit. I put the electronics below deck and so just the displays on the mast. How hard? Easy with help, hard without. I have lots of the display PCBs but not so many of the boards for the wifi chip.
  14. Barn Find Cal 40

    I think they keep the keel and change the rudder. A big issues with these boats is what they call the dreaded beam. Lapworth specified stainless steel and Jensen used regular steel to save money. It think it is like 50k to replace it. Personally, I am happy with the wood version of the boat.