Search found 386 matches
- Sat Jan 17, 2015 5:24 pm
- Forum: Dev: Hardware
- Topic: MAP sensor module
- Replies: 28
- Views: 24350
Re: MAP sensor module
Yep, forgot about that.
- Sat Jan 17, 2015 5:07 am
- Forum: Dev: Hardware
- Topic: MAP sensor module
- Replies: 28
- Views: 24350
Re: MAP sensor module
No capacitors as per the datasheet?
- Fri Jan 16, 2015 11:22 pm
- Forum: Dev: Hardware
- Topic: LIR2032 vs CR2032
- Replies: 6
- Views: 7644
Re: LIR2032 vs CR2032
Yeah, OT, but reasonable?russian wrote:that's SO off-topic perfect world... right...abecedarian wrote:In a perfect world...
- Fri Jan 16, 2015 11:19 pm
- Forum: Dev: Software
- Topic: 4-wire narrow band control
- Replies: 26
- Views: 20307
Re: 4-wire narrow band control
Yep, I see that now, so stand corrected. :oops: The circuit would be similar, but instead of measuring voltages near ground potential, they'd be near 14+ volts- you could theoretically invert the circuit I posted. That would influence how the ADC would be set up, as in it wouldn't have a common V- r...
- Fri Jan 16, 2015 11:06 pm
- Forum: Dev: Hardware
- Topic: LIR2032 vs CR2032
- Replies: 6
- Views: 7644
Re: LIR2032 vs CR2032
In a perfect world, the ECU <i>will</i> be powered from the vehicle battery, with wake up signals from the key switch, which would make having a battery on board only useful if one is changing the vehicle's battery, or has disconnected the ECU for some purpose.
- Fri Jan 16, 2015 8:47 pm
- Forum: Dev: Software
- Topic: 4-wire narrow band control
- Replies: 26
- Views: 20307
Re: 4-wire narrow band control
Realistically, unless Chrysler decided to ground the heater through the sensor body to the exhaust pipe (bad idea anyhow) it doesn't matter how the existing ECU drives the O2 heater- there should be V+ and V- connections in the harness for the sensor(s) so however rusefi decides to drive it is how i...
- Fri Jan 16, 2015 7:12 pm
- Forum: Dev: Software
- Topic: 4-wire narrow band control
- Replies: 26
- Views: 20307
Re: 4-wire narrow band control
When it's on, the current is measured to determine the heater's temperature and if the temperature is proper, the heater is turned off. The periodic 'spikes' seen on the heater wire are caused by the ECU turning the heater on to measure the temperature and is a function of RPM. This defenitely fits...
- Fri Jan 16, 2015 6:32 pm
- Forum: Dev: Software
- Topic: 4-wire narrow band control
- Replies: 26
- Views: 20307
Re: 4-wire narrow band control
Most O2 sensors are not PWM heated. Rather, the heater is either on or off. When it's on, the current is measured to determine the heater's temperature and if the temperature is proper, the heater is turned off. The periodic 'spikes' seen on the heater wire are caused by the ECU turning the heater o...
- Tue Jan 06, 2015 11:22 pm
- Forum: Dev: Hardware
- Topic: stm32 LQFP48
- Replies: 21
- Views: 22511
Re: stm32 LQFP48
Polarity correcting, isolated CAN BUS interface.
http://www.ti.com/lit/ug/tidu422a/tidu422a.pdf <- device description / operation / BOM
http://www.ti.com/lit/df/tidr822/tidr822.pdf <- schematic
MCU sold separately.
*edit- just realized I replied to the wrong topic. Please move if so desired.
http://www.ti.com/lit/ug/tidu422a/tidu422a.pdf <- device description / operation / BOM
http://www.ti.com/lit/df/tidr822/tidr822.pdf <- schematic
MCU sold separately.
*edit- just realized I replied to the wrong topic. Please move if so desired.
- Tue Jan 06, 2015 4:26 am
- Forum: Misc
- Topic: Maybe new rusefi target? TMS570
- Replies: 96
- Views: 79282
Re: Maybe new rusefi target? TMS570
Tools, software, BSDL models and more for the TMS570LS1224 chip available here and on linked pages from there.
I.e. links to Code Composer Studio and other development tools including the NHET assembler, and debugger probes amongst other things.
I.e. links to Code Composer Studio and other development tools including the NHET assembler, and debugger probes amongst other things.
- Mon Jan 05, 2015 12:11 am
- Forum: Misc
- Topic: Maybe new rusefi target? TMS570
- Replies: 96
- Views: 79282
Re: Maybe new rusefi target? TMS570
5v supplies the 3v3 and 1v2 systems. 3v3 is for the TM4C as well as the TMS570's GIO; 1v2 is for the TMS570's internal, core logic. actually quite straight forward. the 570 doesn't have anything resembling tight power up timing, i.e. IO can come up before core and vice-versa. Proper "standards&...
- Mon Jan 05, 2015 12:07 am
- Forum: Misc
- Topic: Do you ever get "bored"...
- Replies: 4
- Views: 4663
Re: Do you ever get "bored"...
Not exactly sure that is what I meant when asking the question, but hey...
... to the extreme he rocks the mic like a vandal....
... to the extreme he rocks the mic like a vandal....
- Sun Jan 04, 2015 4:07 pm
- Forum: Misc
- Topic: Do you ever get "bored"...
- Replies: 4
- Views: 4663
Re: Do you ever get "bored"...
That Olimex board is nice, but with DC in minimum of 9v, and -25C to 85C temp range, probably not really well suited to automotive internal combustion engines- voltage in cold temps or 'old' battery could easily drop below 9v during cranking. Kind of cool, though, that it's an STM32 processor, so ru...
- Sun Jan 04, 2015 8:31 am
- Forum: Misc
- Topic: Do you ever get "bored"...
- Replies: 4
- Views: 4663
Do you ever get "bored"...
... and just want to make something up? two-channel-lowZ-injector-driver.png Arduino compatible, two-channel low-impedance fuel injector driver based on LM1949 P&H driver; stack up to 6 of these and run a 12 cylinder engine? (Ignition drivers sold separately) ... while trying to figure out what ...
- Sun Jan 04, 2015 5:42 am
- Forum: Misc
- Topic: Maybe new rusefi target? TMS570
- Replies: 96
- Views: 79282
Re: Maybe new rusefi target? TMS570
Okay... found schematic (PDF), Eagle schematic / layout, Gerbers, BOM and a little more info here. Schematics reference RM46 chip but that chip is pin-compatible with TMS570LS1224 and both LP's use the same board. Links to download Code Composer Studio and HalCoGen on that page as well.
- Sat Jan 03, 2015 6:58 pm
- Forum: Dev: Hardware
- Topic: rusEFI display
- Replies: 55
- Views: 46067
Re: rusEFI display
Looking around at various sites and it seems those servos are rated 4v-6v; 3v3 might not be enough to drive them. Also, they suggest 400-2400ms pulse width. Since the board will require external power anyways, might as well let it take 12v from the vehicle and regulate down as needed. Might want to ...
- Sat Jan 03, 2015 3:51 am
- Forum: Dev: Hardware
- Topic: rusEFI display
- Replies: 55
- Views: 46067
Re: rusEFI display
Does anyone have any thoughts about this? I think I need a 'how to control a servo for dummies' thread so that I can try to control the serve which I have with as little brain activity as possible :) Servo's are pretty easy. Just send a PWM signal at the right frequency and they move. What we have ...
- Sat Jan 03, 2015 2:37 am
- Forum: Misc
- Topic: Maybe new rusefi target? TMS570
- Replies: 96
- Views: 79282
Re: Maybe new rusefi target? TMS570
Okay, computer's back online. Issues were related to HDD read errors which somehow resulted in making the computer unable to boot reliably. Now have nearly 4TB of storage. :D I agree the lack of FCC approval and other blurbs are typical cover-their-ass things. Anyhow, I haven't come across schematic...
- Thu Jan 01, 2015 3:17 am
- Forum: Misc
- Topic: Happy Holidays!
- Replies: 7
- Views: 8517
Re: Happy Holidays!
Happy New Year!!!
- Tue Dec 30, 2014 6:33 pm
- Forum: Misc
- Topic: Maybe new rusefi target? TMS570
- Replies: 96
- Views: 79282
Re: Maybe new rusefi target? TMS570
Sorry, am battling hard drive problems. Will reply soon.
- Sun Dec 28, 2014 6:42 am
- Forum: Misc
- Topic: Maybe new rusefi target? TMS570
- Replies: 96
- Views: 79282
Re: Maybe new rusefi target? TMS570
... About an OS port, right now russian is relying heavily on the OS to deal with most of the portability and low level issues. The OS is providing pretty much all the low level interfacing with things like timers, and misc ADC registers and such. These drivers are a huge part of what ChibiOS is of...
- Sun Dec 28, 2014 5:26 am
- Forum: Misc
- Topic: Maybe new rusefi target? TMS570
- Replies: 96
- Views: 79282
Re: Maybe new rusefi target? TMS570
Kicad has several programs, and getting from one to the next is required for development but they are all separate, as in not really well put together.
If the folks at cern can fix it, you have a convert.
If the folks at cern can fix it, you have a convert.
- Sat Dec 27, 2014 9:38 pm
- Forum: Misc
- Topic: Maybe new rusefi target? TMS570
- Replies: 96
- Views: 79282
Re: Maybe new rusefi target? TMS570
Yeah, Eagle free has board limitations: 1 sheet, 2 layers and 100x80mm layout area. I'm looking at going 'up' to the "hobbyist" which has 99 sheets, 6 layers and 160x100 board area. Either one fulfills the idea of having "BoosterPack" sized things, as those are typically 50x50mm....
- Sat Dec 27, 2014 8:49 pm
- Forum: Misc
- Topic: Maybe new rusefi target? TMS570
- Replies: 96
- Views: 79282
Re: Maybe new rusefi target? TMS570
Free hardware, sure send it my way :) ... I know you jest, but I'm serious. PM your address and I'll send you one. ;) And I know changing hardware spec's in the middle of development is a PITA. BUT...! You and russian have already developed quite a stash of known, working hardware, and there aren't...
- Sat Dec 27, 2014 1:18 am
- Forum: Misc
- Topic: Maybe new rusefi target? TMS570
- Replies: 96
- Views: 79282
Re: Maybe new rusefi target? TMS570
The board I'm speaking of now isn't the same board you opened a few months ago.
The kit you have: The kit I'm now looking at:
The kit you have: The kit I'm now looking at:
- Fri Dec 26, 2014 10:27 pm
- Forum: Misc
- Topic: Maybe new rusefi target? TMS570
- Replies: 96
- Views: 79282
Re: Maybe new rusefi target? TMS570
If anyone other than I are serious about this, I'll buy 2 TMS670LS12x LaunchPad and send one to Sr. russian, and the other to Jared.
- Fri Dec 26, 2014 7:04 pm
- Forum: Dev: Hardware
- Topic: Ignition modules
- Replies: 71
- Views: 64376
Re: Ignition modules
I guess that would make it a "not logic level" triggered device? ;) Absolutely. I was just trying to provide a closest similar. No worries. Like I said, I may be missing something. ;) Can you check 1994 Mazda Miata? The igniter is inside the coil pack. Have one I can borrow for a while? :D
- Fri Dec 26, 2014 6:46 pm
- Forum: Dev: Hardware
- Topic: Ignition modules
- Replies: 71
- Views: 64376
Re: Ignition modules
I'm still not getting it. provided a logic-type level signal to trigger an igniter. J701 is a popular igniter which is triggered by +12v. I guess that would make it a "not logic level" triggered device? ;) But just a quick check on my side suggests it's powered by 12v on the black / yello...
- Fri Dec 26, 2014 6:18 pm
- Forum: Dev: Hardware
- Topic: Ignition modules
- Replies: 71
- Views: 64376
Re: Ignition modules
So, why provide something like ... MOSFET giving 12v out? 12v out is used to drive external logic-level ignition modules (not coils, but devices before the coil): Mazda Miata (integrated with the coil), Ford Festiva (J701), Mazda Protege (J701) Honda Accord (inside the distributor module) I'm still...
- Fri Dec 26, 2014 7:12 am
- Forum: Dev: Hardware
- Topic: Ignition modules
- Replies: 71
- Views: 64376
Re: Ignition modules
Been a while since I've really delved into the ignition systems on GM, Ford or Chrysler for that matter. To the best of my recollection, none of them drove the (+) 12v to the coil; they all switched the (-) ground or provided a logic-type level signal to trigger an igniter. My '89 Celica, '91 Toyota...