ChicksDigWagons
NAXJA Forum User
- Location
- Upper Michigan
How has this project come along?
Just today I put together a working model of a sequential shift circuit for my XJ.
I'm completely cutting out the TCU however. I'm swapping in a 258 in place of the 4.0 that has long been missing from my engine bay (in preparation for a 360 also on the garage floor) So the TCU isn't going to do a whole lot of anything without any computer control inputs.
Thus the sequential push-button shifting.
But you could say I cheated. I used a Basic Stamp.
I was also wondering what the draw of the solenoids was. The Stamp can only handle ~25mA per output, or a ~50mA total output current. Most relays want >100mA on the coil. So I'm going to have to figure out something for that.
In the first draft of the software, I have it run sequentially through First, Second, Third, OD and then OD with the Torque Converter locked. I may add a stand alone switch for lockup as well as a crude fully automatic mode. The stamp is only useing 5 of its 15 I/O channels for this function, so I'm probably going to try to add some other perks as well.
Just today I put together a working model of a sequential shift circuit for my XJ.
I'm completely cutting out the TCU however. I'm swapping in a 258 in place of the 4.0 that has long been missing from my engine bay (in preparation for a 360 also on the garage floor) So the TCU isn't going to do a whole lot of anything without any computer control inputs.
Thus the sequential push-button shifting.
But you could say I cheated. I used a Basic Stamp.
I was also wondering what the draw of the solenoids was. The Stamp can only handle ~25mA per output, or a ~50mA total output current. Most relays want >100mA on the coil. So I'm going to have to figure out something for that.
In the first draft of the software, I have it run sequentially through First, Second, Third, OD and then OD with the Torque Converter locked. I may add a stand alone switch for lockup as well as a crude fully automatic mode. The stamp is only useing 5 of its 15 I/O channels for this function, so I'm probably going to try to add some other perks as well.