Is there anyone building MS for others?
and how much would it cost having one buildt?

Or is it so easy to do, that i would be better of just taking some time and doing it myself?

 

Do you have an electronics experience? If you've assembled a few little kits before, then you should be able to assemble a Megasquirt if you can follow instructions. There is also the option to buy pre built, generally only a small premium, from most of the vendors. Then you can just make the minor mods needed to make it run a rotary.

 

i haven't realy done anything like it before, but i have done my share of soldering. And i have a friend who is an electritian, and he should be able to help me if i get problems.

I was thinking of buying this when i get some extra money:
http://www.diyautotune.com/catalog/d...kit-p-390.html

Good kit?

I guess the list of parts needed to make it work on RE are in your writeup?

 

Electrician as in...wires up houses for power? Or designs and diagnoses circuit boards?

I'm actually working on one of those kits right now, trying to figure out why I'm not getting a tach signal. I like the kit, like everything DIY sells its straight forward, well labeled and easy to find the locations where things go.

A note though...
DIYAutoTune will not give out the schematic for the main board, which is disappointing in my opinion. I understand this is a proprietary design and they are worried about people copying it.

What bothers me is this: if someone is going to copy it, they will. Several hours with an ohm meter will tell you everything a schematic will, and there are lots of people with free time who can do just that.

Once its assembled, its really hard to diagnose an issue if you don't know where things are going. I've had 3 minor assembly issues now that have taken me several nights to figure out...which if I had a schematic it would take about 20 minute each.

My main issue is that they are expecting people to build these kits without a MAJOR diagnostic tool, especially considering its a 4-layer board.

 

just google "megasquirt V3 schematic", and you'll find the circuit designs on the bowling & grippo website. It doesn't give you exactly how the board is made. which layer each trace is on, etc, but as far as diagnostics and checking continuity/troubleshooting circuits, it works since you know where each component is. I've had to use it for a number of things so far.

 

Hmm, looks like i'm better off buying a prebuildt one.

So wich one?

#1
http://www.diyautotune.com/catalog/m...unit-p-65.html

#2
http://www.diyautotune.com/catalog/m...nit-p-165.html

#3
http://www.diyautotune.com/catalog/m...ase-p-171.html

 

That's true for the Microsquirt module itself, but not the main board it plugs into.

 

It may have been lost in translation, but here, "electrician" means someone who wires up houses. They generally only have a tiny fraction of electrical knowledge and would be wholly unqualified in electronics work.

The PNP units are great if the wiring harness in your car is in good shape and you aren't swapping engines around. This is a small minority, at least based on the RX-7s I have seen. One of the greatest advantages of a standalone is that you can replace that crusty old wiring harness.

I'd recommend the MSII on the V3.57 board, then the Zeal daughtercard for rotary specific functions. My stickied writeup covers the rest of the process but doesn't cover the 3.57 and Zeal combination yet.

 

http://www.megamanual.com/ms2/pcb.htm

 

Again, NOT the Megasquirt mainboard. I'm talking about the DIYPnP board, the Microsquirt module attaches to it.



Not the white board on top, the two dark boards on the bottom.

 

I haven't used one of the SMD boards before, so I'm not sure which connections are on the board and where they are located. #1 is the thru-hole board and is VERY well documented and is probably what 90% of the people on here use so it'll be easier to diagnose also.

Keep in mind, any of them will have to be modified slightly to run an RX7. So, you will need to do a bit of electrical work...BUT that just means you will have a great opportunity to learn something new!

 

Red seal certified electricians actually have to study quite a bit of electronics, simple stuff like use of diodes, transisters, caps, and resistors, to basic gates and digital logic. Simple circuit board design and breadboard testing is part of their schooling. I would peg them as wholly more experienced to tackle an MS project than 95% of the people that start the project.

 

Oh wow, that PNP board is pretty nice, I haven't seen those before. Sorry bout that!

 

Decided to jump in and bought an MS2 and V3 board in kit form, i'm building it to use on my Neon, since i prefer to learn as much about building and tuning a MS, before i attempt it on my RX7.

Pictures and stuff in this link, if anyones interested
http://forums.neons.org/viewtopic.php?f=51&t=308752

 

Just got a used computer with db9 com port for megasquirt only
Considering running linux mint if it works with all the megasquirt programmes.

Dell Latitude c540, 2ghz, 512mb ram, 40gb hd, should be enough, tho i might upgrade the ram