DIYEFI.org Forum

Thanks for the heads up Fred.

I'm down for two, just let me know how to get whoever money.

Been busy with other vehicle projects, I gotta get back on this to get the bike ready for race season

OK, JimStim is tested to work, and my old MS-II is running just fine reading all the usual inputs, according to MegaTune. I have yet to populate any outputs for ignition or FI, so I gotta work on that soon. The Adapt board hit my porch yesterday, and while I have opened it, I have not tested loading...

interesting project. I machined up a fuel rail and a plate that could hold 4 injectors, and had planned on making a rig where I could squirt 4 at a time and observe the flow pattern and measure the amount of flow, but... still to be finished ;) Instead of a fuel pump on mine, I had planned on a smal...

Ohh silly me. I was thinking you were having problems installing the toolchain, not the actual build of the firmware. I just downloaded an official release and ran with that, didn't bother yet with getting the bleeding edge.

You are running 10.6? I did mine on a vanilla 10.6 box without needing any of that...

I was digging around online and found this interesting little appnote from Freescale on building a DCI ignition with a HC08, using an IGBT. Might be an interesting source for some ideas: http://www.freescale.com/files/microcontrollers/doc/app_note/AN2159.pdf Also, using IGBTs for ignition from ST: h...

Ah, that's cute. I hadn't seen them before.

Most MOSFETs need about 15v to fully switch, but some are 'logic level' and will switch at 5v. MOSFET drivers usually have a logic side and a drive side with different Vccs to allow for this.

Gate drivers are REQUIRED for basic FETs but NOT required for autofets. In those, it is built in. That is why we love them ;-) Can you give me a part number for an autofet? I've never seen one with a built in gate driver, I guess. Gate drivers are not always required... If you are not going to need...

Well, at least for a MOSFET, the full-on resistance is way low, so even flowing amps of current through one won't heat it up much. The idea behind using a gate driver that can supply a lot of current to get it to switch fast is to minimize the amount of time in the partially-conductive state and thu...

Well, in my case I was switching the high side and my gate drivers were galvanically isolated. I stacked 3 1.5kV mosfets in series, each one could block 1.5kV and leak the rest, so by the end, no volts were passing. IGBTs are safer to drive if you do it right. Snubbers are needed to slow down the dV...