Recent content by JohnGC

  1. JohnGC

    Anchor - Knox 13kg

    Hi Jeremy, Yes I can do that. I expect to be travelling to Preston in the next couple of weeks. Date to be decided.
  2. JohnGC

    Anchor - Knox 13kg

    13kg Knox anchor in good condition. Selling because it is too small for my new boat. £250 Collect Plymouth or Preston Photos in this link. Please note I have remove the shackle since most of these were taken. Click/tap here for photos Click/tap here for Knox website
  3. JohnGC

    NMEA2000 YAPP

    Thanks for the GIT lib pointer. Just for interest. There is one MCU I know of that has the CAN transceiver built in. The NXP11C24, an ARM Cortex M0+. There is an eval board available from Farnell (and others) which includes the debugging hardware...
  4. JohnGC

    Standardising on 12v fuses

    Thanks for the pointer, they are handy for me too.
  5. JohnGC

    Standardising on 12v fuses

    If you look at fuse datasheets you will find that voltages are specified. Voltage is important when the fuse blows. EG The gap created to open the circuit must not ark after the fuse has blown. The fuse will also ark while blowing but should not damage the fuse body or holder in doing so...
  6. JohnGC

    Seasickness

    My wife sometimes suffers and has had success with this; Reliefband Seasick Remedy Watch - Motion Sickness Control Also a friend found one useful crossing Biscay. His situation was interesting. Not normally a sufferer, the onset of seasickness was sudden. He tried the "watch" and the sickness...
  7. JohnGC

    Depth Sounder Offset

    Assuming the offset is stored in the "smart" transducer (it looks as though it is in the 810 but I can't find anything definitive on the 800). Then this has the hallmarks of an incompatibility introduced with a firmware update. Is new firmware available for your AP28?
  8. JohnGC

    Fog horn control

    I fired a SA80 and a Glock 9mm a couple of years ago, as a guest of the Royal Marine Commandos. They use active ear defenders, impressive bits of kit (all of them). I wouldn't call the Commandos anything unmanly ;) I too have tinnitus. Fortunately mine is mild, but still it taints my music...
  9. JohnGC

    Modification to Nanni N2.14 Exhaust Elbow

    I was thinking of a film of liquid water on the surfaces rather than damp gas. But now you've got me wondering if the combustion products dissolve in the water and so create a more conductive solution than salt water. Note: my chemistry knowledge is best described as dreadful.
  10. JohnGC

    Modification to Nanni N2.14 Exhaust Elbow

    Is it possible that the anode works in the damp environment of the elbow when the engine isn't running? Which is probably 99% of the time. Or does the elbow dry out completely when the engine isn't running? Is that different when the engine has been at its operating temperature verses a 10...
  11. JohnGC

    My COVID-19 Lockdown Project: 10” Android Car Stereo to Navionics Chart Plotter

    The OP's car head unit has a two wire input (plus 0V). It is intended for interfacing with a car's steering column switches. EG volume. The column switches apply different resistance values to the two input lines (referenced to 0V). The head unit detects those resistances on the inputs and you...
  12. JohnGC

    My COVID-19 Lockdown Project: 10” Android Car Stereo to Navionics Chart Plotter

    If a wired remote is acceptable, you could use the column switch inputs.
  13. JohnGC

    270ah DIY LiFePO4 build

    Looks rather like one of these. Trombetta 684-1221-212-02 12V Powerseal DC Contactor, 150A | Waytek
  14. JohnGC

    What's the collective noun for Yotties?

    Under sail - a "waft". Moored - a "raft". Under engine - a "donk". Anchored - a "Rumsfeld" (they don't know what they don't know)
  15. JohnGC

    Fastnet storm 1979

    Brilliant, thank you. I'll pop into the Sea Chest.
Top