tks
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| posted on 15/6/05 at 02:50 PM |
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DigiDash project [Making up the test PCB!]
Hi all,
an while ago i started a topic about making an digidash with leds etc.
because i'm now started with it but i regred of going any further with it i deleted both topics..
I now want to build something what is easier to build....
Soow i was thinking of using an 5" LCD graphical and the same overlay trick..
the LCD can be blue white or black white....
because i want to do it the ron champion i way i post this one to talk about what we all want??
because i think that the dashboard is an important thing but we also want to safe a bit of money (locost idea, some pints in the pub, high on man
hours..)
i thought that you all helped me an bit with telling your thoughts
ok
i have desinged here something..
also i want you to think about TouchScreen
and wich size should the module become??
if nececarry lateron i can send programmed chips arround the world // laser cut overlays for not much amount..
OK LETS START!!..
p.d. what drives me is the simple fact that i cant find not one module that has all my needs.. and displays what i want....
also it is allot of fun if you can make your car more of your self by putting your own bitmaps etc.. on the thing..
the digidash 2 for example costs 500pounds?? pff for that money we can make 5 units..
[Edited on 1/4/06 by tks]
[Edited on 5/4/06 by tks]
The above comments are always meant to be from the above persons perspective.
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Avoneer
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| posted on 15/6/05 at 03:59 PM |
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Display - Speed, RPM, Water temperature, oil pressure, fuel level and gear indicator if it's a bike engine.
Warning Lights - Indicators, full beam, fog, charge, handbrake warning light, oil pressure and neutral if it's a bike engine.
A big shift light.
LCD approx 4" x 3" with the warning lights across the bottom and the shift light a big wide red one full width across the top or a row of
progressive lights along the top.
Just my ideal dash anyway.
Hope that helps,
Pat...
No trees were killed in the sending of this message.
However a large number of electrons were terribly inconvenienced.
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tks
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| posted on 15/6/05 at 04:29 PM |
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ok pall
now search for an lcd..
with driver and i make an dash for you..
i think we need 240x128 pixxels.
Tks
The above comments are always meant to be from the above persons perspective.
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DarrenW
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| posted on 15/6/05 at 04:30 PM |
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Touchscreen - YES please. Nice idea - i like it a lot.
In terms of size - i have a sony ericcson P800 mobile that i use in the cradle in the car. I find the screen too small and busy - it is difficult to
use the touchscreen on the move (private roads only) with fingers, only really possible with the plastic probe they supply. The screen is only 65 x
45mm. I would say 80 x 60 ish minimum. It would be worth doing research of the existing dash units to compare.
I would guess your dash will be less busy and the touch areas larger.
Digidash is more like £700, so as you say you have some scope here. I would guess the lap timing facilities etc are not what everyone wants but std
dash displays and warning lights will be good (so no other lights required - perhaps a few user definable ones will be good - ie reverse light warning
etc).
Allen Bradley do some good touch screen colour displays, obviously at a cost but worth a look (industrial PLC).
Some neat graphics would be well smart - fuel level, warning displays (oil pressure, temperature etc). Even a welcome screen on start up that you can
add pics to.
Im free wheeling here but you may be on to something.
Keep up the good work - i could be interested in a fully working one when you get that far especially if you are talking about £100 ish.
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tks
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| posted on 15/6/05 at 04:56 PM |
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mhhh
ok
i'm thinking about thise one..
Link To The LCD with/without touchscreen..
you need pdf vieuwer..
Tks
as an Start i think this will be the functions..
Data
- Speed
- Rpm
- WaterTemp
- OilTemp
- OilPressure
- Fuelmeter
- GearIndicator (speed/rpm calculated)
Leds
- Shift Leds
- Hazzard
- Fog
- Left Turn
- Right Turn
- Main Beam/HighBeam
- Oil Pressure
- Battery
allot of leds we could eliminatie with an message onscreen...
but for racing use it could be .. ok
also i was thinking of simple extra outputs/inputs etc..also for RS-232 output of the data in that way it is an open system..
also with the rs-232 function we can update the firmware..easy..
TKS
i now am trying to figure out.. if i use buttons..or only one encoder etc..
[Edited on 15/6/05 by tks]
The above comments are always meant to be from the above persons perspective.
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ceebmoj
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| posted on 15/6/05 at 09:39 PM |
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hi,
I like the idear I also have PCB layoutes and bords made up that ues a pic have usb and a host of other stuff on bord that make a good prosesor main
bord that can be mounted on to the main bord witch would supply signal condidtioning.
However I think to main of the systems out there are very porly designed from the point of lay outs. and the use of screan real estate. As cool as
couler scheans and touch screans are thay dont realy have a place in a project like this.
look at it like this you can proses and disply much more information than any driver can ever proses. It is about displaying what is inportant at any
one point. and displying that information in the best way posible. i.e. a grapg or gage can be be read very quickly and gives a good indication rate
of change ,roufg level where as a number takes much longer to read but give an absolot value, but does not give a good indication of rate of
change.
any way ther is lots to think about if you whnat to develop it as an open pproject can I sugest you set up a wiki so other can contrbute.
blake
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tks
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| posted on 16/6/05 at 03:58 PM |
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yeah
ok, but offcourse we could
try to make kits for different settups..
i also have thoughts about using an encoder with integrated button..thats also easy...
with in an couple of days i recieve an order for the displays...
in the mean time i have already designed the overlay..
any one ideas?
maybe we can use your boards???
is it an USB to rs232 solution or pure USB??
Tks
 
Rescued attachment dashidea.JPG
The above comments are always meant to be from the above persons perspective.
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ceebmoj
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| posted on 17/6/05 at 11:37 AM |
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hi it is purly usb as that leaves the pins for the rs232 free for rs232 however the bords I have bring the rs232 to a pin header with the debugging
stuff.
the bord is 42mm by 45mm and is all surface mount.
blake
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tks
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| posted on 17/6/05 at 11:44 AM |
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ok
sow you have pure usb...
pff it differs allot from RS-232
i always worked with RS-232..because of the simplicity...
well will need one board to try an bit with it how much do they costs??
Tks
forget to mention wich USB chip do you use?? and where you planning to use 16F877a?? or 18 series??
think 16F877a is enough..
[Edited on 17/6/05 by tks]
The above comments are always meant to be from the above persons perspective.
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Bob C
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| posted on 17/6/05 at 11:47 AM |
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I made a dash for my old lotus elan kit about 13 years ago, used a 240x128 pixel graphics display & a single board computer with a 1MHz 6502 on.
It was programmed using PASCAL for the BBC computer (did my own mini OS to intercept graphics vectors etc.). It did rpm bargraph update on 10Hz
refresh & updated mph at 2Hz - so shows what could be done with stone age technology...
Obviously technology has come on LOTs, That old thing worked fine (& I believe it still does!) but there were one or two issues with the display.
I used an ntc on the -Vee LCD bias to keep contrast right as temperature varied - again worked great. There was a reduction in contrast at high
temperatures. At low temperatures the contrast was fantastic, but the speed was VERY slow eg about 10s for a dark pixel to go light. So winter
mornings tended to be an 88mph experience....
I used battery backed RAM to save odometer & trip data - (OK it was an RTC chip) You need triple redundancy in this data with voting/fixing on
powerup.
Finally, there was the question: intelligent dash - what can I do that's flash that's not in (eg) a BMW? The only thing I could come up
with was little numbers indicating ON THE TACHO BARGRAPH what revs I would be doing in each of the 5 gears. This was fairly cool and is an alternative
to a gear indicator display.
Bob C
PS - you know this will take 4 or 5 times as long as you think it's going to don't you.....
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tks
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| posted on 17/6/05 at 12:24 PM |
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it will depend all on
how your programmins skills where / are..
and in wich language you make it etc..
but rpm and speed is easy..
also temps are easy... and pressure.
the difficult would be interfacing with the display but this also cant be very very difficult.. now a days..
TKs
The above comments are always meant to be from the above persons perspective.
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ceebmoj
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| posted on 17/6/05 at 08:50 PM |
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tk yes rs232 is very simple however by using a 18 seres you get usb on chip the reason rs232 is not used because you still need the external level
shifter. hence the rs232 is brout to a pin header so a external device can be pluged in. the bord is quite small all the bits are surface mount and
the origonal project thay where built for has usb drives developed for it. you can also do incircuit programing.
meaning that you dod not need to pree program chips.
we should get a wiki up and runing maby as part of this sight. then we can post up scemaics and other infromation. i.e. source code and schimatics
then any one can build the dashes.
blake
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madman280
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| posted on 19/6/05 at 03:25 PM |
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Have you guys seen the Dash7 unit yet? Its been discussed on this forum before if you'd like to do a search. Tor Antle the designer post on the
sevens forum alot and is quite aproachable. Check out
http://home.c2i.net/toratlel/Dash7.htm Its almost exactly the same thing you guys are already considering.
A number of people have pursued this idea and a number of units are operational, instaled and were being used last time I looked. I considered this
path myself, but a number of the components wern't automotive temperature rated. I live in Canada where those extreams are very common. A small
obsticle the just required a bit of research.
CH
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tks
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| posted on 19/6/05 at 03:29 PM |
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dash7 is ok..
its no what i had in mind..
i wanted a digidash clone..and with clone i mean..with the same functions..
see the uploaded pic above...
lights for indicators....
an complete solution..
also my personal opinion is that i don't like the old gauge style...
tks
The above comments are always meant to be from the above persons perspective.
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tks
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| posted on 21/6/05 at 07:38 PM |
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ok
Let's talk about money..
i have an enquery every display
Will cost 200 euro's (black white) with TP
Sow we have:
- Laser cut parts 20euro each
- Display 200euro
- Pic cpu 10euro(not programmed)
- Leds 10euro
(can be expensive if very bright/special leds are used)
- print 10euro (hand made)
- resistors 5euro
- etc. 6euro
Total 261euro! soow it will be some 180pounds this is including touch panel!
The display stats are above (pdf link)
Is it cheap for an complete dash??
or to cheap? incomplete?
de touchpanel is made that it works with your vingers....
the program i'm gonna write will be like cellphone style (nokia etc.) that idea..
offcourse every thing is adjustable in it
- Like pulses per km/h / pulses per mp/h
etc..sow an devider is built in..
- Scale of rev meter
- Maybe some styles??
- RS-232 output enabled / disabled??
- Temp sensor used or universal one..
etc.
Tks
Offcourse the more people will subscribe the more i order the more discount i get.
but have no idea right now how much it would be..
The only thing we have to mention is that it don't comes in an case (the dash) its sort of an overlay system..but offcourse we locost builders
make ar own one from ally..??
Well guys you should all motivate me!
The above comments are always meant to be from the above persons perspective.
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ceebmoj
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| posted on 22/6/05 at 08:42 PM |
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hi,
why the touch screan?
I can not think of any feature it would add other than bloat. you say can say is is for seting the system up but why not conect it to a pc for that?
and as for drivig the driver is never going to have the time to touch the screan coupled with the in car vibration macking it hard to be acurate.
if you whant the driver to be abol to itract wit the dash look at a number of studys done by NASA and others witc sufest interfaces witche enable you
too keep you hnds on the controls. i.e. serting weal mounted ala f1
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tks
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| posted on 22/6/05 at 09:09 PM |
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mhh ok that will be an pole..??
i dunno.. wy would you need to set settings while you are driveing..??
its just for small things..
an pc is also allot of hassle? some times you don't have it by hand (during SVA) etc..
i only was thinking of some menu's for race/track use..
or normal use..your mobile phone is also very clear while driveing..
if touchpanel will work is just an matter of programming...
(small buttons but many area will work same etc.)
dunno..the display isn't needed to be touched / buttoned because its big enough to display all what you want to see and if an error etc occurs
then it will popup with an message or an check button etc..
sow my idea was that while driving it isn't neccecary..
but while configuring it should be reliable clear and offcourse fast..
think about an pc hassle..??
wy not alla mobile phone..vast easy..
what we want more??
Tks
The above comments are always meant to be from the above persons perspective.
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Tim 45
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| posted on 22/6/05 at 09:15 PM |
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I assume by mobile phone, you mean a smartphone, not your typical sony erricson, as i find it hard to see how you can connect a phone to control such
a device, using a software applet running on java (what with the signals that need to be sent to the digidash and recieved), and to only have limited
memory on the mobile...
If you think a laptop is too big, how about controlling it on the road using a PDA (for track use a laptop would be used) as they now have access to
larger memory, such as 2gb.
I would steer clear of mobile phones.
Cheers
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paulf
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| posted on 23/6/05 at 10:27 AM |
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I have looked at this a number of times and would like to build one, but so far the software hasent been released on the site.I emailed the builder to
be put on the mailing list but havent heard anything for months.
Paul.
quote:
Originally posted by madman280
Have you guys seen the Dash7 unit yet? Check out
http://home.c2i.net/toratlel/Dash7.htm Its almost exactly the same thing you guys are already considering.
A number of people have pursued this idea and a number of units are operational, instaled and were being used last time I looked.
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tks
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| posted on 23/6/05 at 02:32 PM |
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Nahh
confusing allarround//
drop digidash 7 i want to say with that that'i'm not going to build something like that..and it makes confusing over here..
also with mobile phone like control
i don't mean you need it..i just want to say with that that the menu's will be like that..(with two/3 buttons max..)
offcourse i can consider making an datalogger...its simple anyway..and mem chips are cheap..
i think that 1 sample an second would be far enough??
but offcourse it would be user eligable..
Tks
also i'm thinking of an lock system...
(you have to enter an pin code to be able to start car etc..)
The above comments are always meant to be from the above persons perspective.
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RickyKay
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| posted on 24/6/05 at 06:17 AM |
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Al this sounds really good let me know when you have a finished product i will be very interested in buying one..
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tks
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| posted on 24/6/05 at 06:37 PM |
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display ordering
Does any one
Already have the confidence that i can order an display for them?
i need to know it?
also the laser overlay can i order multiple times?
if not then i order both 1 time and give an demo when finished
Tks
i also need your advice...what is preferable? using some general temp sensors? (sow you need to buy these to work all? this way uses etb they have the
sensors with the kit?)
or just an lead for temp sensing? its an bit difficulter because the system needs values then to calculate his formula...
offcourse i can make an kind of small tuning wizzard in the system.. it will ask you 5 values @ 5 temps (sow it can make his own temp formula)
but dunno what we all prefer??
it could be also a hassle to mount other temp sensors in the existing system right?
The above comments are always meant to be from the above persons perspective.
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ceebmoj
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| posted on 24/6/05 at 10:23 PM |
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hi,
for the instruments why not suport 3 or 4 comon standard instruuments i.e. and ranges i.e. 0-5v 0-12v mA ranges and others youcan then also have a
function to build a scalig system using a say a 6th order polynomial system or the like.
as you are thinking of using a PIC if you use a DS PIC you can use the free PIC dev tools to make up youer poly representations. and the DS is well
soted to handleing evry thing You need and could do some nice graphics if that is what you like.
you could also ues the DS for some nice real time vibration analasis i.e. you could ues the same PCB for testing the prop shaft and balencing it. a
total seporat proect I know but one worth the hasle.
blake
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tks
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| posted on 25/6/05 at 12:30 AM |
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DS pic?
what is an DS pic??
planning tu use the 16F877a or an 18F series..?
TKs
The above comments are always meant to be from the above persons perspective.
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ceebmoj
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| posted on 26/6/05 at 08:22 PM |
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DS PIC is a new range of micros oferd by microchip. you can think of them like a PIC but with a lot of signal prosesing stuff tacked on. with alows
much more complex maths to be cared out. thay are a nice device with some good power to them. as the ds core is designed for signal prosesing and
hence repeated arithmatic i.e. filtering that can be used as nice display drivesr as well as handeling the other stuff you whant to do.
have a look at the microchip web sight. thay also have some free voice recognitaion and nois cancellation librys for download.
blake
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