SensESP - Temperature sender code update - Voltage Divider Circuits- Boat Projects

[@Coyotehello]

Excellent video! I just receive my Orange Pi 4 this week and will start on it as soon as I have a moment. 🙂

[@BoatingwiththeBaileys]

Interested to see how you get on with that. I hear good thinks about the Orange Pi

[@davidbarrett7424]

Great work, loving your digial engine project. I fitted a similar temp sensor with an off-the-shelf analogue gauge to my Nanni 14 some months ago. Compared to no-gauge-at -all, I'm getting extra comfort all is o.k. with the engine. I'm thinking precisce measurements are nice, but not sure they're really needed? Your work has inspired me to try an ESP32 boat project. I'm part way through creating a raymarine autohelm remote control, (similar idea to their Smart Controller) using a phone as the remote, lots of learning but good fun.

[@BoatingwiththeBaileys]

Many thanks for your comments. I do agree with what you are saying around how precisce does it need to be and your comment around the standard guage. I think im going to sort of sign this off now unless someone comes back and says change this one small thing. I would like to get oil pressure out of it.

[@andyv82]

Care to share the hardware end on how you got your coolant temp reading? I'm not sure if I should add a second temp sensor to my Volvo Penta MD2B (it's a relic) or maybe it's possible to tee off the existing? I have no idea. Pretty sure the temp gauge on the boat isn't quite working as it should, could be the sensor or the gauge (boats new to me) but I'd like to digitize that and not sure where to start.

[@BoatingwiththeBaileys]

Hi, My boat never had a guage so I had to add a sensor for this to work. It's from ASAP and can be seen in this video. kzbin.info/www/bejne/f3qbhoWvjrl5p8U - link to the sensor. www.asap-supplies.com/gauges/senders-fittings/temperature-senders The pre-installed sensor on mine is just a switch so it earths out when the engine is too hot. I'm not sure you can use one sensor for a gauge and do what we have done, but it's worth a try. Make sure you use the same earth if you are building what i have done and then try connecting it and see if it changes the reading on your gauge. This video goes into all the circuits and sensors kzbin.info/www/bejne/f2KVf5esh7aBrrssi=vkzFGVb3TCvBvzbo The code is all online and available for you to use, if you get stuck give us a shout and I'll try and help you.

[@tedenda]

Thank you for a good video! I have to pick up my own OpenPlotter, sensESP and Signal K projects some day so I can monitor my old Yanmar YSE8 and other things. Had a lot running on the bench 2020-2021 but then a lot other things happened i life and now I think I have to start over from scratch, a lot have been done since then in the projects code! The link to Techsytle seems broken?

[@Coyotehello]

Yes I also oget an error with link to Techsytle, and searching Techsytle I end-up with a gazillion fashion channels etc.! lol

[@ApresSail]

@@Coyotehello @tedenda - try www.youtube.com/@ApresSail . On the Openplotter Forums, I am known as Techstyle (an old company I owned), my YT is Après Sail

[@BoatingwiththeBaileys]

Glad it was helpful! - Sorry about the link, not sure what happened, but its been updated now.

[@Coyotehello]

@@BoatingwiththeBaileys Oh, that is "Après", yes he has very nice videos on the work he does on his Hunter! Thx.

[@Coyotehello]

@@ApresSail Yes, yes. I know you as "Après Sail" and I enjoy your channel very much!

[@philgardner3617]

Hi Mat, nice work on the update. I have setup my VS Code environment now and it is all working sweet, I did get caught out on the Firebeetle USB driver though :). It was only by rewatching your video that I got moving again. It doesn't pay to have different ESP32 boards, although I brought two fire beetles for the engines. I managed to compile your code and I got a couple of errors that you may be interested in, from the main.cpp that I downloaded from Github. One was sensesp requires this include now. #include "sensesp/transforms/moving_average.h" and there was a "-" missing in line 120 (In the frequency. Strange errors but not too serious. I think the sensep libraries must have been reorganised between releases. My question of the day is the circuit for the alternator W reading. Does your circuit still accurately reflect the one back when you described the circuit way back when? My problem is I live in South Australia and our boat is in Far North Queensland which is around 2600 km's away (Aussie is a big country) I can test everything but the RPM circuit at home. Thanks again for your videos. Kind regards Phil

[@BoatingwiththeBaileys]

Hi Phil, Thanks for pointing out '/moving_averages.h' was missing, i knew there was something i needed to update and hadn't so that has been corrected now. If you have any more info on where that '-' was missing, let me know as I can't seem to spot that one. I am still running the same circuit and really the RPM code hasn't changed other than the addition of using it for fuel consumption. What i can tell you though is that the RPM accuracy goes out towards the higher end. Its not something i have had chance to look at or understand if its a limitation of the circuit, the light into the Opto is reaching it's max, the pi pin can't switch any faster or its simply a bit of calibration thats required. The circuit doesn't seem to affect my RPM gauge and when thats reporting about 2700-2800, the pi seems to say 2600. I dont tend to run the engine any higher than this and its on the list to try and work out. I hope that helps, i would be interested in feedback from others on this to see if its isolated to mine, i know another subscriber has just installed his but the boat is still out of the water. Your journey to the boat certainly beats mine, i was saying to some recently that our 320km trip to the boat was worth it after getting the response 'thats a long way' i think we have a new winner on that front!. I hope to sail over to Australia one day!

[@philgardner3617]

Hi, Thanks for the reply, this is the code with the missing "-" sensor->connect_to(new Frequency(multiplier, config_path_calibrate)) // connect the output of sensor to the input of Frequency() _to(new MovingAverage(2, 1.0,"/Engine RPM/movingAVG")) ->connect_to(new SKOutputFloat("propulsion.main.revolutions", config_path_skpath)); Like you I do not run the engines hard, so that should be fine for me as well. We have a major issue getting Pi SBCs. I want to get an 8Gb 4B to cover anything else I may want to do. I have an old 3B but not keen to proceed with that and this is going to hold me up somewhat. We are heading to the boat in a week, so. I hope to at least test the RPM out with my MacBook. Our sailing season is over the Southern winter as there is a risk of summer cyclones and it is extremely hot (water temperature around 29 C) and humid over the summer as it is also the wet season. Across the Atlantic and Pacific would be an awesome trip. I am not sure I could convince my wife to do the reverse, but you never know. Thanks for all your help so far.

[@philgardner3617]

** Alert** the copy paste didn't work so well, It somehow cut off the left side of the text. I will try again. it seems to work when I paste it but when I click on reply it drops off some text. sensor->connect_to(new Frequency(multiplier, config_path_calibrate)) // connect the output of sensor to the input of Frequency() >connect_to(new MovingAverage(2, 1.0,"/Engine RPM/movingAVG")) ->connect_to(new SKOutputFloat("propulsion.main.revolutions", config_path_skpath));

[@BoatingwiththeBaileys]

Many thanks for posting that again, i've spotting it now and corrected the code online. Are you able to get the 4Gb Pi4b as im not sure the extra memory is used at the moment. I dont really hit above 2Gb with my setup. The SSD has had the biggest impact for me but you will notice a huge different from a Pi3.

[@philgardner3617]

@@BoatingwiththeBaileys It's good to know 4 Gb is enough, sadly the two distributors in Australia can't supply any boards unless you buy them in a "kit". The cheapest is about $AU175 for a 4Gb model. I guess I will just have to bite the bullet.