WOOHOO a small win for me :)

[BiGH]

Just couldn't resist posting this.

I'm very new to microcontrollers and the like, and just managed to setup the interface between an ATMEGA128 and a ENC28J60. Got pings, and got tuxgraphics code (FINALLY) to work on it. I'm a complete noob when it comes to all this crap, but the fact i can now incorporate ethernet network into my controller i'm designing for me electric car, makes me VERY happy.

now its time to invest in an IGBT or 6

 

[heathyoung]

Nice. I'll see what I have if you like in the way of IGBT's - I'm pretty sure I have some nice ones you could use laying around - at least for testing.

There is a MG150Q2Ys51 on the bench here, its a 150A 1200V if thats any use. Its a half-bridge, so you would only need 3. I've also got some seriously high powered SCR's as well, but they aren't much good for DC - I think I have 3 more somewhere...

Edit: Datasheet here - http://datasheet.octopart.com/MG150Q2YS51-Toshiba-datasheet-103930.pdf

Also have 3 X Semikron 75GB 124D 02150 's - 100A, 1200V on a massive heatsink
(http://docs-asia.origin.electrocomponents.com/webdocs/002c/0900766b8002c323.pdf)

with 9 IR IRKT56/12AS90's (half-bridge SCR)

I think there are some half bridge IGBT 200A units somewhere in this mess as well. Not sure where though.

 

[BiGH]

Nice. I'll see what I have if you like in the way of IGBT's - I'm pretty sure I have some nice ones you could use laying around - at least for testing.

There is a MG150Q2Ys51 on the bench here, its a 150A 1200V if thats any use. Its a half-bridge, so you would only need 3. I've also got some seriously high powered SCR's as well, but they aren't much good for DC - I think I have 3 more somewhere...

Edit: Datasheet here - http://datasheet.octopart.com/MG150Q2YS51-Toshiba-datasheet-103930.pdf

Also have 3 X Semikron 75GB 124D 02150 's - 100A, 1200V on a massive heatsink
(http://docs-asia.origin.electrocomponents.com/webdocs/002c/0900766b8002c323.pdf)

with 9 IR IRKT56/12AS90's (half-bridge SCR)

I think there are some half bridge IGBT 200A units somewhere in this mess as well. Not sure where though.

Thats awesome thanks. I've been investing a lot of time reading the schematic to the Cougar controller. http://ecomodder.com/forum/showthre...44v-motor-controller-6404-322.html#post166509 I think i need to breadboard a basic driver system first before I jump onto an IGBT - maybe just use a very cheap low powered one. I also need to source myself a cheap Brushed DC motor (not sure where i'm getting that yet). AC IM motor is much easier - Greys Online have many that come up in auctions.

My goal is to use a futurlec controller and modules for a modular system. Where the BMS, charger, and auxiliary displays / sensors all talk to the motor controller. The design will be open source.

 

[gestalt]

BiGH,

I really like the direction you are going in with the all inclusive sensors/controller/display moduals. I was thinking of something like that, allong the lines of a gas tank style module that could bolt on to a number of different frames. The display would be a combination of touch screens and E-ink style readouts that would save on power and could be lit by small led light in the evening...customizable rgb ones for that matter. Get to the point where you have these paired with modular drive trains so designers can create the rest of the bike. Like what they were trying to do with the "skateboard platform" for fuel cell cars back in 2002. Mass produce, lower costs, local builders build the end product. Sound like a win win to me.

/viva la electric revolution!!!
//slash master, slash slash slash faster

 

[amberwolf]

now its time to invest in an IGBT or 6

http://www.endless-sphere.com/forums/viewtopic.php?f=9&t=17002

 

[BiGH]

cool

I think there is a lot of value in the futurlec boards / modularising the boards. A Large percentage of the original 2C schematic is re-created in the futurlec board. It does add quite a bit of cost to the build however the RS232 and microcontroller sections ($5 in parts ~ $28.95 Futurlec board), but you get a much bigger controller. A Mega128 really is overkill, but that gives a lot of expandability. Using a couple of MEGA128s (as they have HEAPS of connections) would be useful for a DC setup, and using their dsPIC3F4011 would be great for a 3 phase AC.

Having multiple controllers to control different aspects of the setup will cause issues with sending messages between them, however, it just requires smarter programs on the chips.

I've just gotten the schematic for the open REvolt controller V2d_1, which has a few extra features. but sections of it are the same. While the design is still under development

Regarding the Aux sensors:
I was thinking that the aux sensors would be more of a simple way to integrate inputs and outputs to a central processor. The outputs I was thinking also included things like providing the signal for the gas gauge in the dash, providing an RS232 / Ethernet connection for configuring the entire system. I have a very limited understanding of analog circuits, but a good understanding of digital ones.


I dunno after writing this post, it might be worthwhile just building the 2D revision of the control board, and customising the software to accept inputs via RS232 from another device - kind of like a car management computer which tells the motor controller what to do.