DIY Electronics projects for ST185, want your Ideas

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Re: DIY Electronics projects for ST185, want your Ideas

Postby MWP » Sat Jan 14, 2012 2:06 pm

Well the phone has to be iPhone or Android... any other choice would be silly.
Coms would be via either Bluetooth of WiFi.
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Re: DIY Electronics projects for ST185, want your Ideas

Postby l0ch0w » Sat Jan 14, 2012 6:16 pm

Im pretty good at making and designing the circuit boards :)

Right now im designing a PWM controller for my MAC boost solenoid so that I can just adjust boost levels, and switch between cruise and race mode with a push pull pot.

Image
By alochow at 2011-12-19

Image
By alochow at 2011-12-28

Ive also copied HKS's discontinued fuel cut defender.
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Re: DIY Electronics projects for ST185, want your Ideas

Postby zf_165_gt » Sat Jan 14, 2012 7:07 pm

@l0ch0w nice job with the PCB, the FCD is something popular, never needed it myself.
if you're interested in a common project PM me.
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Re: DIY Electronics projects for ST185, want your Ideas

Postby l0ch0w » Sat Jan 14, 2012 7:13 pm

Havent needed the FCD myself either... I just figured so many people could use one that I decided that I could maybe make some money on em.

Id personally be interested in a double din touch screen lcd that can run both a "carputer" for tuning my standalone (haltech) and also be the radio...

Im not really good at the programming side of stuff, but I can hold my own on the hardware side.
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Re: DIY Electronics projects for ST185, want your Ideas

Postby l0ch0w » Sat Jan 14, 2012 7:22 pm

.
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Re: DIY Electronics projects for ST185, want your Ideas

Postby MWP » Sun Jan 15, 2012 12:21 am

You shouldnt have bends in tracks with an angle over 90deg.
The etching acid undercuts the resist layer and youll end up with less copper at those corners.

This is one of the larger projects ive made...

Design, schematics, PCB layout & PCB production all done by me at home.
The PCB is double sided and is accurate enough for TSSOP IC's and 0805 resistors.

Its not too hard to make PCBs of this quality at home if you have the time.
The artwork was printed using a crappy bubble-jet printer on BJ compatible transparency film.
The PCB is Riston brand double sided pre-coated.
Was exposed for ~8min under a normal fluro desk lamp (not UV).
Then etched & drilled as per normal. Vias are done using wire links.

Image

Image

Image

Assembling the audio amp:
Image

I built that amp back in 2003, and its still works perfectly to this day :)
My collection of GT4 documentation: http://gt4.mwp.id.au
Daily: Celica GT4 ST185 (~170kw/atw)
Project: Toyota RA28 '77 Celica (1UZ-FE powered)
Chairman of the SA Classic Celica Club.
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Re: DIY Electronics projects for ST185, want your Ideas

Postby aus jd 2703 » Sun Jan 15, 2012 12:27 am

Something simple you guys could Make is an adjustable fan controller so you can set ya fans lower to suit a low temp thermostat
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Re: DIY Electronics projects for ST185, want your Ideas

Postby Landon » Sun Jan 15, 2012 1:31 am

someone wanna fix my JL audio amp that i got from ebay that someone screwed me over with? lol. i didn't install it util 7 months later and its toasted inside.
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Re: DIY Electronics projects for ST185, want your Ideas

Postby Andy » Tue Jan 17, 2012 1:10 am

Take a look at what I did with the Arduino. http://www.alltrac.net/phpBB2/viewtopic.php?f=9&t=32605&hilit=arduino+boost

In summary:
- controls the boost
- Measure and log any 5 volt signal; curently the AFM, TPS, and Vac/Boost signals + WB O2
- Control of radiator fan
- Log/graph data on a PC

Don't have but should be doable (look for/at the MPGuino project)
- tach
- injector duty cycles
- Speed

I recently aquired an ELM327 with bluetooth, about $25, this plugs into the ODB2 port of '96+ cars. It not only provides diagnostic information, but real time data as well. Along with that I put "Torque", $5, onto my Android.
see: http://www.alltrac.net/phpBB2/viewtopic.php?f=17&t=42988

The "Torque" application is fantastic. Google: "ELM327 Torque"

It will show you some good info even on our cars w/o ODB2 (from GPS and the accelorometers) . Which brings me to what I've been working on lately. If I add a Bluetooth module to my Arduino and follow the OBD2/CAN protoco, then I should be able to present the above data (plus more) to the Torque application. Torque, would "see" my Arduino as an OBD2 enabled ECU. This moves the data display, logging, etc. from the Arduino/PC to the Android and Torque.

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Re: DIY Electronics projects for ST185, want your Ideas

Postby l0ch0w » Tue Jan 17, 2012 6:13 am

MWP wrote:You shouldnt have bends in tracks with an angle over 90deg.
The etching acid undercuts the resist layer and youll end up with less copper at those corners.

This is one of the larger projects ive made...

Design, schematics, PCB layout & PCB production all done by me at home.
The PCB is double sided and is accurate enough for TSSOP IC's and 0805 resistors.

Its not too hard to make PCBs of this quality at home if you have the time.
The artwork was printed using a crappy bubble-jet printer on BJ compatible transparency film.
The PCB is Riston brand double sided pre-coated.
Was exposed for ~8min under a normal fluro desk lamp (not UV).
Then etched & drilled as per normal. Vias are done using wire links.

Image

Image

Image

Assembling the audio amp:
Image

I built that amp back in 2003, and its still works perfectly to this day :)

Damn!

Thanks for the tip BTW, That pic I showed was of my very first PCB I ever made... ive gotten a bit better since... but not nearly to where you are at though.

Instead of printing on transparency, I found large clear labels that I can print on, I just stick em to the PCB under the blacklight, and voila! No need to dork around with transparency films and potentially ruining the PCB by accidentally moving the transparency press thing or whatever you use.
Andrew

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Re: DIY Electronics projects for ST185, want your Ideas

Postby MWP » Tue Jan 17, 2012 12:31 pm

Great idea with the labels!
Where do you get em from? I havent seen anything like that on the shelf (not that ive been looking though).

I used masking tap to stick the transparency to the PCB, then exposed one side at a time.
Never had any misalignment issues thankfully.
My collection of GT4 documentation: http://gt4.mwp.id.au
Daily: Celica GT4 ST185 (~170kw/atw)
Project: Toyota RA28 '77 Celica (1UZ-FE powered)
Chairman of the SA Classic Celica Club.
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Re: DIY Electronics projects for ST185, want your Ideas

Postby l0ch0w » Fri Jan 20, 2012 5:05 am

Since you are in Australia, I have no idea what stores you have access to, or if they would carry them. But here is an online retailer for multiple sizes and types :)

http://www.onlinelabels.com/material_cr ... labels.htm
Andrew

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Re: DIY Electronics projects for ST185, want your Ideas

Postby MWP » Sat Jan 21, 2012 3:45 am

Nice, thanks for that :)

Not that ill be needing it form my current project though... itll be far too complex to make a PCB for it at home :(
I think ill be using these guys: http://www.pcbcart.com/
My collection of GT4 documentation: http://gt4.mwp.id.au
Daily: Celica GT4 ST185 (~170kw/atw)
Project: Toyota RA28 '77 Celica (1UZ-FE powered)
Chairman of the SA Classic Celica Club.
MWP
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Joined: Mon Jun 01, 2009 11:02 am
Location: Adelaide, South Australia

Re: DIY Electronics projects for ST185, want your Ideas

Postby zf_165_gt » Sun Jun 29, 2014 5:02 pm

Hi guys.
a lot of time as passed since I started this thread and a lot of things happened.
I put aside my universal datalogger project a while ago and concentrated on something else.
lesser powerful but a lot easier to use and as my goal was to reach people with it, it is doing fine yet.

I made an Android datalogger for our obd1 capable 3S-GTE and many other toyotas of that era.
it necessitate a circuit that i build and sell.

https://www.youtube.com/watch?v=G_NYN44ZsQA
https://play.google.com/store/apps/deta ... ps.toyobd1

If you are familiar with the windows Cartester8000 application this is kind of a port on the Android platform.
It gets farther than that as you can export your logs to excel to process custom macros on it.
many uses are possible with this
the first one is to make sure sensor readings are OK.
second one is to know crucial data to brew a base tune for a standalone ECU.
1988 ST165 , clean body, broken engine since acquisition.
1991 ST185 JDM , CT26/CT20 hybrid,
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Re: DIY Electronics projects for ST185, want your Ideas

Postby athousandleaves » Mon Jul 07, 2014 3:03 am

Looks cool, how much is the dongle?
Looking for any beta testers?
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