First Try DIY: Oil+fuel pressure gauges: MotorvateDIY Garage Ep.38
Тәжірибелік нұсқаулар және стиль
On this episode of Motorvate's DIY garage, we are going to show our first try at making a:
Digital, DIY engine oil pressure and fuel pressure gauge.
** This is only a development prototype, as old parts were used that are no longer available. The next version is under development now.**
There are two reasons why this was developed:
• Verify if a low cost, easy to assemble mini "digital dash" is possible and functions well.
• Verify the oil pressure on my G37 ( I'm worried about failing gaskets!)
We used a $15 Elegoo Uno (Arduino Uno clone), a $10 Arduino Uno style "terminal shield" and a $130 Newhaven Display Shield we had from another project from 2017. (In the Arduino system, the word "shield" means it simply connects like lego... no wires or soldering to worry about!)
The display we used is no longer available, but since we already had it, we put it to good use. (Specs: 480x272 TFT, Capacitive touch screen with an embedded video engine (EVE) that does all the graphic rendering @ 60 Hz)
As for assembly, all the circuit boards simply stack and connect to each other.
This is our "working first prototype". It is large and ugly, BUT it works well even with a few technical issues. (Analog noise resulting in "needle shake")
No source code will be released, as it only works on the old FT800 EVEs. (embedded video engine)
However, the second generation is under development right now and we do hope to release a "lego like" DIY kit so anyone can assemble regardless of electronics skills.
This should be fun!
Пікірлер: 29
This is really awesome to see! I just learnt about ADCs at school and to see it in a video like this really makes me excited to continue learning. Thank you for doing what you do!
@MotorvateDIY
2 жыл бұрын
Jaylin, Well that is good timing on my part! I love working with ADC and using something like a $10 Arduino Uno clone, you have a nice 6 channel, 10 bit ADC, built into a 16Mhz, 8 bit micro controller. If you don't have a Arduino Uno clone, you should get one!
I dnt think there is anyone else who has this type of g37 content. Amazing 👍
@MotorvateDIY
2 жыл бұрын
Hey Lunchtime, Thanks! Going forward my goal is show unique content for the G37 / 370z when I can.
Very interesting. Always love seeing a notification for one of your videos.
@MotorvateDIY
2 жыл бұрын
Derek, thanks! With a comment like that, you made my day!
Keep us posted on the DIY kit! Boy this sure reminds me of my electronics training days....
@MotorvateDIY
2 жыл бұрын
Will do! I hope to have the next update video out in 2-3 weeks :)
Awsome!!! Great to see there is a way... way to go mad scientist!!!
@MotorvateDIY
2 жыл бұрын
Thanks... The good news is my engine oil pressure is good and so are my galley gaskets. My engine is safe for now :) The bad news is that a new hardware platform needs to be selected and tested... which will take some time.
@smoochreynolds4865
2 жыл бұрын
@@MotorvateDIY I would like to help In anyway. What can I do to show extra support? And without this technology how will I know if my gally gasket is bad or going bad( 2013 g37x sedan) thanks n hope to be of help in the future
@MotorvateDIY
2 жыл бұрын
Thanks for your offer to help, but at this point I wouldn't know what to ask for. Down the road, it would be helpful if you could beta test for us, but we are not there just yet. As for a test to know if the galley gaskets are failing, looking at the oil pressure and oil temp is the only thing we can do for now.
That’s awesome! Very interested to see whether you can implement the CAN sniffing to this type of display. Wish I could implement this straight into the dash!
@MotorvateDIY
2 жыл бұрын
In dash would be great, but that is not easy to do and expensive. I think you will like what I am working on now and hope to show in a few months. Hint: 8 Analog inputs, wireless, with reversed engineered CAN bus data.
Nice, does this ECU not have PIDs for these values? I must be spoiled with my Android tablet with ecutek on my q50
@MotorvateDIY
2 жыл бұрын
I am very envious of the Q50s running with EcuTek... you get access to sooooo much data! However, on the 370s/G37s with the fairly simple VQ37VHR (compared to the VR30DDTT) the ECU doesn't need fuel pressure or oil pressure sensors as it is old school port injected and doesn't have a variable flow oil pump. So, if we (VQ owners) want that data, we need to add the sensors and gauges. (The 350z did have oil pressure, but it was dropped on the 370z for oil temp)
what did you use to design the actual gauge layout?
@MotorvateDIY
2 жыл бұрын
In that video, the display had a built in "EVE", embedded video engine and supports a command to draw a gauge face with needle. I then used a text command to overlay the text. Just in case you haven't seen the updated version, here it is: 16 Page Mini-Dash/LCD Gauge Update! MotorvateDIY Garage Ep.42 kzread.info/dash/bejne/nqKYvMuLqKe0f9I.html
Will be very interested to see V2. Any links you can share for howto's on making dial gauges?
@MotorvateDIY
2 жыл бұрын
Hey Rob, Not yet. Once I have the next version done, I will be updating motorvate.ca for this purpose.
@robdover2122
2 жыл бұрын
@@MotorvateDIY Frank, check out Kalman filters. It is a technique for reducing jitter. There is a decent Arduino library that is quite easy to use.
@MotorvateDIY
2 жыл бұрын
Thanks, I will look into those filters. The ADC noise with the LCD running was more than +/-15 ADC counts. When the noise is that high, it is difficult to filter out all the noise AND have the needle respond quickly - which I think it has to. Without the LCD, it was the usual +/- 1 ADC counts. The next version won't be an Arduino shield and won't have an switching regulator (PWM) for the back light control. The extra physical distance and lack of a switching regulator should greatly reduce the ADC noise.
Yo brother, I need your help. So I’m having a problem with my g37 misfiring. It doesn’t do it all the time, but I noticed it only does it when shifting to 3rd gear, I tried replacing spark plugs, spark plug seals, valve cover gaskets, & even ignition coils. My last thoughts would be fuel injectors, any help would be greatly appreciated, thanks!
@MotorvateDIY
2 жыл бұрын
I have been reading about more and more G37s with misfires. It seems to be somewhat common as the car ages. Too often I see people replacing many parts without determining if the part is bad... no troubleshooting, just changing parts hoping to fix the problem. In the future, I will do an episode on tests that can be done to determine if an ignition coil is bad, and which one. Same for fuel injectors. The tools required are not cheap, but explaining the process may be helpful. With that said, have you looked at your fuel trims with a wireless OBD scan tool? Most misfires are due to a lean air/fuel mixture. Hmm... I guess that should be the first video on troubleshooting.
@ezkoshows7136
2 жыл бұрын
@@MotorvateDIY well I didn’t replace all that for the fun of it, I had oil leaking into my spark plugs so I had to replace the seals. However, I replaced the ignition coils because they had some oil on them from the spark plugs, but mainly in hopes of fixing the misfire. I have not looked at my fuel injector trims, I’m honestly not completely sure what that is. A video about it would be greatly appreciated, thanks for the help brother.
What’s up Frank, been a while! Cool video. How many miles on your G now ? Glad to see you post new content 👍🏽
@MotorvateDIY
2 жыл бұрын
Hey Matt, It has 112,000 miles. I have a lot of content to edit, I just need time to edit it and get it out. I hope to get out something ever 2 weeks for the next while.
@mj350gt2
2 жыл бұрын
Motorvate DIY nice and glad to hear friend! Looking forward to all your VQ vids. I’m just about to hit 176,000 on my 08 G35s 6 speed🤘🏽took it up to Mt. Baldy CA for the first since doing my suspension work! Car is a canyon gremlin ! So happy with this build and reliability 🤘🏽
@MotorvateDIY
2 жыл бұрын
California has some of the best roads I have driven. It must be nice to live there!