What's new

Geddon

Professional
Joined
Jun 1, 2018
Messages
683
Reaction score
324
Location
USA
The Dreamcast Racing Controller HKT-7400. Not the greatest racing controller, but if you're on budget and like to keep things compact then its perfect.
Nice! thanks for the write up. I found one pretty cheap on eBay and plan to give it a shot.
 

Brivs Mekis

Beginner
Joined
Jan 31, 2018
Messages
17
Reaction score
3
Location
London
hi, would anyone who has one of the dreamcast wheels please be able to tell me the measurements in cm that I have marked on the photo?
thanks - EDIT - not to worry I bought one anyway (see next post)
 

Attachments

  • s-l1600.jpg
    s-l1600.jpg
    192.9 KB · Views: 94
Last edited:

Brivs Mekis

Beginner
Joined
Jan 31, 2018
Messages
17
Reaction score
3
Location
London
Ok, so here's my effort with the Dreamcast steering wheel. I used the European version HKT-7430, make sure you check which version you have as the wires are different colours on the 9 pin connector compared to HKT-7400.

There is alot of room to work with inside, so I took advantage of this and screwed a DB25 breakout board onto the right hand side stand of the original PCB.
I'm useless at soldering so prefer terminals and I had a spare cable to use.

Another thing, if you want to check the wiring inside the actual wheel, only 4 of the screws around the centre circle on the front are real and need to be removed (along with the ones around the back of the wheel itself.) The rest in the middle are decorative only.

I wired the buttons:

A - Service
B - Test
Minus - P1 down
Plus - Aux2
Start - Start

I used dupont cables on the helper from Aux2 (plus button) to P2 SW1, that is for boost in Sega race tv and also RTuned.
I also put a dupont cable from P1 Down (minus button) to P2 Up. I didn't cut any traces.

This allows you to use the minus button to change view in OR2, and in initial D it moves on the menus where you choose car and colour etc, same with RTuned and then during a race in RTuned it changes the view (without messing up the gears)

For the main steering pot, I didn't remove the 5v and Ground, I just switched them over when connecting to the terminals.

I play all the racing games with auto transmission.


Hope this helps someone.
 

Attachments

  • Screenshot_20200612-140145__01.jpg
    Screenshot_20200612-140145__01.jpg
    213.1 KB · Views: 112
  • Screenshot_20200613-002159__01.jpg
    Screenshot_20200613-002159__01.jpg
    602.5 KB · Views: 111
  • Screenshot_20200613-002249__01.jpg
    Screenshot_20200613-002249__01.jpg
    427.6 KB · Views: 98
  • Screenshot_20200613-002233__01.jpg
    Screenshot_20200613-002233__01.jpg
    443.2 KB · Views: 103
  • Screenshot_20200613-001502__01__01.jpg
    Screenshot_20200613-001502__01__01.jpg
    112.9 KB · Views: 98

ConversusWV

Beginner
Joined
Feb 18, 2021
Messages
17
Reaction score
6
Location
Spartanburg, USA
Great mods here. I have a general question about these old school console wheels though. Can a 3rd-party PS1 racing wheel be used for Naomi or Sega Model 2/3? I read those normally run on 3.3v as opposed to the Dreamcast controllers' 5v, but some of those actually have potentiometers for the steering instead of encoders.
I had a Pelican Rally 2 racing wheel for Dreamcast that I later chucked cuz I was doing some ridiculous conversion, but that controller has a very clean wiring diagram inside the base with all the connections marked, so maybe it's ideal for modding. Pelican released a couple wheels for PS1 with the same generic mold, including the GT2 (likely to coincide with Gran Turismo 2's release), so I bought one of those to see if the wiring's any similar. These controllers are dirt cheap on eBay btw; you can easily snag them for $24-30 including shipping. :)
 

nem

Enlightened
Joined
May 29, 2016
Messages
3,986
Reaction score
3,103
Location
Finland
Can a 3rd-party PS1 racing wheel be used for Naomi or Sega Model 2/3? I read those normally run on 3.3v as opposed to the Dreamcast controllers' 5v, but some of those actually have potentiometers for the steering instead of encoders.

Voltage doesn't matter, because you're bypassing all of the electronics and just wiring straight to the pots and buttons. As long as it has pots for the wheel and the pedals, it will more than likely work.
 

ConversusWV

Beginner
Joined
Feb 18, 2021
Messages
17
Reaction score
6
Location
Spartanburg, USA
As long as it has pots for the wheel and the pedals, it will more than likely work.
Sounds about right. You will also most likely not have any dead zone as I've hacked a couple HKT-7400 Dreamcast wheels for Model 3 and they do not have any dead zones. Only the pots can be a little finicky if not insulated properly. :P
 
Top