Leviticus6432

Hey guys, I just thought I'd share with you what I've been working on. I'd like to start by saying that this project is simalar in a handful of ways to a project another yt member, Clownmeat, is working on. I in no way copied his idea, as I had no knowledge of it when I started my project in July. His is way nicer looking anyway lol
So back to the story... I've been working on putting a TBI 4.3 out of an Astro van in my 88 toyota pickup. The 700r4 trans that it came with had reverse out of it. And I, like an idiot, decided to bolt up a 4l60e I had laying around. Of course now I had to wire up a ghetto shift controller. I ended up buying an Arduino and relay board. After tinkering around with it a month or two I had a code up and running that switched the relays on and off at the push of a button. The 4l60s work just like the A340s in most toyotas... 2 solenoids control the shift and one controls lockup. The difference is that the 4l60s have a solenoid that controls pressure, a solenoid to control the 3-2 downshift, and sometimes 2 lockup solenoids rather than one.
So it was back to the drawing board. I added a timer to the code so the convertor would lockup 8 to 10 seconds after you shift to 4th gear. Then I spliced into the tps sensor signal and now the boost pressure is a direct relation to the tps. More throttle more pressure. I had to make a little circuit board with a resistor a transistor and a diode. The arduino couldn't supply the pwm power to the solenoid without it. I have 2 extra transistors on the board in case I have to add other crap later.
After all that work I decited to just make a fully auto option. I looked into some of our files at work and got a chart for a compushift. A month later and a bunch of code I think I finally have most of it figured out. I got all the hardware put together today and will hopefully hook it up this weekend and see if it works.

I'll post some pics here in a sec...

Leviticus6432

I took some connectors out of an old tv and some solid wire and made some 90 degree male connectors for the arduino. It was pretty time consuming as I soldered all the wires in place.







This is my circuit board that drives the pressure control solenoid.



Wire harnesses.


It was a tight fit...





And here it is all put together.

NH Mudder

All I can say is wow...Most of that stuff is waaay over my head. Sounds like it will be an extremely fun truck to drive once you are done. Good luck man, looks like you know what you are doing

Leviticus6432

Thanks. I was over my head when I started the project lol... Thats why it has taken so long. I did work at a transmission shop so that helps alot. Learning all the programming was the hard part.

Clownmeat

irab88

iTrader: (4)

few things:

1) subscribed
2) what box is that? i like it. i know it's not 'duino specific, but it looks like it could hold a mega?
3) why did you use a barrel jack instead of the v-in pin? they do the same thing and you wouldn't need the extra wire on the outside:



http://www.ladyada.net/images/boardu...arduinosch.png

looks good!

Texas_Ace

Looks nice, wish I knew how to do all this stuff. I always seem to melt little things like this when I try to solder them.

Leviticus6432

irab, I got the box with a bunch of crap I bought at a garage sale for a dollar... It used to be a remote starter box for a car but it was missing the wiring harness and the remote, so I gutted it and used it as a project box. And I was afraid if I used the vin pin and tried to run it off of just usb for testing, it might try to backfeed through the pin. Idk if that is possible I didnt really look into it lol. Coulda just used a diode I guess...

Leviticus6432

Ya I have that problem too. lol On a positive note, little things are usually a dime a dozen. Just try try again

Texas_Ace

I will try again sometime but after melting enough parts you kinda get fed up with it lol.

Dhammika Kariyawasam

Hi Leviticus6432,

I know I'm resurrecting an old thread, but I would like to know some more details of your design. What inputs you took and on what conditions solenoids are energized.
Also would like to know more on the hardware?

Thanks in advance

Dhammika

JBurt

You might get a little more insight in his build thread here.

He did wind up swapping in a manual tranny a while ago.

tacomanut

incredible