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Networking is for the next version. I'm looking for feedback on which protocol to develop first. So far here are the choices I'm aware of: NMEA SignalK WiFi with a webpage Wifi with JSON Bluetooth Ethernet FlyWright, regarding safety you're right-on. I omitted warnings and alerts for the...

Thanks John! I'm doing it mostly for the fun of playing around with electronics and software. If it can be useful, well that's just a plus.

The code and schematics have been posted to BitBucket at https://bitbucket.org/R_P_Ryan/enginemonitor/wiki/Home I am still working on some of the code. Also, I am still waiting for the thermocouple amplifier boards and the last DS18B20 sensor to arrive. These are not yet implemented. I have...

Very interesting! If I could only put out enough trim tab to get on plane at 2100 rpms it appears I'd be at ideal fuel/speed economy. (without over-propping of course). Thanks, Robert

The crab season is closed so I need to find other ways to enjoy the boat. To give a little background, Many years ago I owned a 1965 Evinrude 60HP engine. It had a huge engine with four cyclinders. The distributor was on a hinge and a lever would swing it forward as the throttle advanced...

Jeff, I see we have the same vessel. My '78 has the '77 T6.354. You mentioned published stats on fuel consumption - do you have access to this information and could you forward to me? Regarding the calibration, I suppose I could use a scale and weigh the fuel in a small, outboard motor style...

For those interested in wireless, SigFox is an alternative to the 3G/4G network and is being setup across the world. It is currently running in the San Francisco bay area, however I do not have the specifics. SigFox is like wifi for the internet of things. It's a mesh-style network and...

I was thinking about wiring it into this: http://www.trawlerforum.com/forums/s6/diy-engine-monitoring-system-23769-4.html

It's Alive So far this has been a very simple build and is within the grasp of most people who can solder and do things like install device drivers. The LCD display arrived and I started wiring/coding. At the moment it cycles through the temperature of each of the five DS18B20 temperature...

uh, yeah, I am DIY geek. I was thinking about hooking it up to my Arduino (microcontroller). I'm just concerned about the materials used and if there's any risk of something dissolving in the diesel and harming the injector pump, etc. I have no clue what my fuel consumption is at various RPMS...

This is less than $20 and I'm wondering if it would be safe to install: 13mm Liquid Fuel Oil Flow Meter Counter diesel gasoline Gear flow sensor 3 12V -in Flow Meters from Industry & Business on Aliexpress.com | Alibaba Group. I'm thinking I'd need two - on for for the feed and the other for...

This would require some electronics but is an interesting solution: https://www.adafruit.com/products/1786

I ordered seals for my Perkins/Bowman air charge cooler from a marine supply and they were the wrong thickness. From looking at your assembly it's a similar dimension as mine. I got the correct O-ring from McMaster-Carr for about $2, slathered it in plumber's PTFE paste and set it. So far it's...

How do those work? Back in the 90's when I was working on a rescue/patrol boat I got to try out a pair used by the DEA. It was large and you could hear a gyroscope whirring away. I think the were 10x, maybe 12x - but they were awesome.

what kind of metal is that, and how did you get it so clean?

wow, big project! congratulations on taking on such a scale, and good idea to use threaded rods. Persistance is a great quality.

Bronze it is. Attached is a diagram of flow meter that I've been considering. The sensor changes resistance as the flow rate increases. I doubt you could determine GPH, but it would you tell you if the flow rate is lower than normal. This could also have the temp sensor onboard.

Alarms are definately in scope but increase the programming complexity. I think once we have the basics of cooling temperatures and tachometer we can venture into alarms. It probably makes sense to include a red LED and a buzzer in the on-dash enclosure. While searching for flow meters I came...

That's a good point. Some exhaust elbows have a thermocouple after the water injection. I would really like to know the flow rate though. Based on the feedback in the survey we are able to omit the thermocouples and their break-out boards. The DS18b20 temperature probes can handle up to 257...

There are four more replies to the survey and the new results are similar to the ones noted in the earlier post. Need some advice on the water flow sensor. Aqualarm makes nice, marine-grade water flow indicators (Cooling Water Flow : AQUALARM, Warning Systems For Land And Sea). I've seen...

Five people completed the survey so far. Attached are the results. From looking at the results: Tach, coolant temp, and water flow are the most requested sensors Most people want a monitoring system, and want to make something useful while learning about Arduino Everyone is comforable that...

Did the beached Uniflyte re-enter the water on its own, or was pulled off by somebody? My guess is the prop strut pushed through the hull upon grounding - although those boats have a very thick layer of glass on the bottom. I would hope nobody would pull my boat off the shore after a major storm.

For those of you who are interested in building the system please complete this anonymous survey: https://www.surveymonkey.com/r/V7DTYLG It basically asks about what features you want and your comfort level of working on this type of project. I am using the responses to help guide the design...

DMK fits the bill of a purpose built, bolt-on marine-grade monitor. It's great solution but it's less flexible than the Arduino and doesn't really have the same "Maker" appeal (see https://en.wikipedia.org/wiki/Maker_culture. for more information Check out all the sensors you can wire into an...

There are bundled kits that include many of the components we need, and they are significantly cheaper. For example, this board is significantly more powerful and has more pins, which means we can connect more sensors. If we wanted to support two engines this would be a better choice than the...