99 Honda VFR800, PnP ECU NOW turbo EVENTUALLY
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Re: 1999 Honda VFR800, PnP ECU & Turbo eventually™
I have a pogo pin adapter but stupidly left my STlink at work and can't flash anything until next week
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Re: 1999 Honda VFR800, PnP ECU & Turbo eventually™
Main MCU would take firmware via USB in DFU mode? if you had USB soldered?
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Re: 1999 Honda VFR800, PnP ECU & Turbo eventually™
Do you know part numbers for those while and black ECU headers for me to add on https://github.com/rusefi/rusefi/wiki/OEM-connectors?
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Re: 1999 Honda VFR800, PnP ECU & Turbo eventually™
I don't. All I know is they're made by sumitomo and don't appear in any of the 90s/2000s era catalogs I was able to find, nor have I or anyone else been able to find a part number.AndreyB wrote: ↑Wed Apr 10, 2024 2:41 amDo you know part numbers for those while and black ECU headers for me to add on https://github.com/rusefi/rusefi/wiki/OEM-connectors?
I got them by emailing ignitech@ignitech.cz and asking to buy 10 of each color since they sell ECUs and ignition controllers for other bikes with this style of connector
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Re: 99 Honda VFR800, PnP ECU NOW turbo EVENTUALLY
As far as I can tell the ECU works save for possibly having to tune the VR input. I uploaded a new tune and datalog to rusEFI online, trigger error was incrementing but the trigger events in the log looked okay. I won't have time to troubleshoot until tonight.
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Re: 99 Honda VFR800, PnP ECU NOW turbo EVENTUALLY
Never mind I'm a dumbass and was interpreting the log wrong, it starts if I give it some throttle and runs but won't idle. I'll try and work out something resembling a tune this weekendcoolantbongrips wrote: ↑Thu Apr 11, 2024 5:27 pmAs far as I can tell the ECU works save for possibly having to tune the VR input. I uploaded a new tune and datalog to rusEFI online, trigger error was incrementing but the trigger events in the log looked okay. I won't have time to troubleshoot until tonight.
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Re: 99 Honda VFR800, PnP ECU NOW turbo EVENTUALLY
Project stalled for the forseeable future, I broke a rod or something
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Re: 99 Honda VFR800, PnP ECU NOW turbo EVENTUALLY
While cranking? While revving? While not rusEFIing?coolantbongrips wrote: ↑Sat Apr 13, 2024 1:00 amProject stalled for the forseeable future, I broke a rod or something
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Re: 99 Honda VFR800, PnP ECU NOW turbo EVENTUALLY
While cranking, I don't even know when exactly it happened and the last time it ran it was on the stock ECU. I plugged the rusEFI back in tonight to test some things, tried to start it, and now I'm getting some horrible noise. I'll dig deeper into it tomorrowAndreyB wrote: ↑Sat Apr 13, 2024 1:05 amWhile cranking? While revving? While not rusEFIing?coolantbongrips wrote: ↑Sat Apr 13, 2024 1:00 amProject stalled for the forseeable future, I broke a rod or something
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Re: 99 Honda VFR800, PnP ECU NOW turbo EVENTUALLY
Just for the record, proper "CBR 600" setup would look something like
https://github.com/rusefi/rusefi/issues/6420
https://github.com/rusefi/rusefi/issues/6420
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Re: 99 Honda VFR800, PnP ECU NOW turbo EVENTUALLY
tl;dr: VR sensor signal is out of range of VR Discrete, what value should the damping resistor be?
I replaced the engine in my bike and have been slowly poking away at getting this running. I can get it started with some throttle, but it sounds like it's misfiring and doesn't want to idle. When checking the logs in tunerstudio, I noticed that the cam position sensor appeared to be occasionally dropping out.
On my board this signal is routed to the VR Discrete module. At first I suspected the dropout had something to do with the half amplitude pulse causing the VR conditioner to trip up somehow but upon further investigation according to https://github.com/andreika-git/hellen-one/wiki/module-vr-discrete it looks like the limits for the VR Discrete module inputs are +2.5 and -1.6V, which are less than the +-3.5V signal I've logged while cranking.
I noticed the schematic shows an unpopulated resistor for damping hot signals which I want to populate to see if this fixes the problem, but I can't find a value for this resistor anywhere. Is there an official value for this resistor, or does it have to be found through experimentation?
I replaced the engine in my bike and have been slowly poking away at getting this running. I can get it started with some throttle, but it sounds like it's misfiring and doesn't want to idle. When checking the logs in tunerstudio, I noticed that the cam position sensor appeared to be occasionally dropping out.
On my board this signal is routed to the VR Discrete module. At first I suspected the dropout had something to do with the half amplitude pulse causing the VR conditioner to trip up somehow but upon further investigation according to https://github.com/andreika-git/hellen-one/wiki/module-vr-discrete it looks like the limits for the VR Discrete module inputs are +2.5 and -1.6V, which are less than the +-3.5V signal I've logged while cranking.
I noticed the schematic shows an unpopulated resistor for damping hot signals which I want to populate to see if this fixes the problem, but I can't find a value for this resistor anywhere. Is there an official value for this resistor, or does it have to be found through experimentation?
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Re: 99 Honda VFR800, PnP ECU NOW turbo EVENTUALLY
And in less important news I have two completed ECUs in ultra shit quality 3d printed cases. My goals of having a plug and play ECU that fits in the stock location are achieved even if the ECU doesn't entirely work yet!
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Re: 99 Honda VFR800, PnP ECU NOW turbo EVENTUALLY
coolantbongrips wrote: ↑Wed May 15, 2024 2:19 amIs there an official value for this resistor, or does it have to be found through experimentation?
https://github.com/rusefi/uaefi/issues/65
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Re: 99 Honda VFR800, PnP ECU NOW turbo EVENTUALLY
Nice, I'll install some 5k resistors tomorrow and see if that fixes it
Re: 99 Honda VFR800, PnP ECU NOW turbo EVENTUALLY
I don't think we've seen a to hot VR yet. There was a Honeywell guide which caused that resistor to be a thing. The Honeywell guide predicted VR signals could go very hot. However that's at a 0 gap with a VR you hand made. I don't think we've seen a purchased VR which was capable of overpowering the input.
Keep in mind that the 5k was NOT to improve the signal quality, it was to limit the energy dumped into the +v rail. Adding the resistor is likely to cause low RPM signal loss.
Keep in mind that the 5k was NOT to improve the signal quality, it was to limit the energy dumped into the +v rail. Adding the resistor is likely to cause low RPM signal loss.
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Re: 99 Honda VFR800, PnP ECU NOW turbo EVENTUALLY
If VR is to hot, can you add a gap? Perhaps add a spacer or something like that. Increasing the gap will dampen the signal.
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Re: 99 Honda VFR800, PnP ECU NOW turbo EVENTUALLY
Adding 5K can improve SNR.
Re: 99 Honda VFR800, PnP ECU NOW turbo EVENTUALLY
Oh I see analog improvements in that circuit. It's more then just a comparator. Good to see that evolution.
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Re: 99 Honda VFR800, PnP ECU NOW turbo EVENTUALLY
Ignore this first part, I can see the events in the console and and I think I'm misunderstanding what "Trigger channel 2" means
I'm trying to debug this with cam and crank enabled, but I'm getting no cam signal with the following settings: I know VR Discrete is getting a good signal because I can see trigger events in the log when I revert to the old cam only settings, and when I probe directly on the pin I see the cam signal.
Adding a 5k resistor between cam/crank - and + inputs hasn't made a difference nor has changing the amplitude between +-1V and +-5V. At a simulated 2400RPM my trigger events look like this: for a given signal of this: For clarity, at the moment I'm debugging this using two function generator channels replaying captures of the cam and crank sensors and the ECU isn't currently on the bike as I'd like to avoid a repeat of whatever killed my last engine.
I'm trying to debug this with cam and crank enabled, but I'm getting no cam signal with the following settings: I know VR Discrete is getting a good signal because I can see trigger events in the log when I revert to the old cam only settings, and when I probe directly on the pin I see the cam signal.
Adding a 5k resistor between cam/crank - and + inputs hasn't made a difference nor has changing the amplitude between +-1V and +-5V. At a simulated 2400RPM my trigger events look like this: for a given signal of this: For clarity, at the moment I'm debugging this using two function generator channels replaying captures of the cam and crank sensors and the ECU isn't currently on the bike as I'd like to avoid a repeat of whatever killed my last engine.
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Re: 99 Honda VFR800, PnP ECU NOW turbo EVENTUALLY
The last post can be ignored, I didn't realize tunerstudio doesn't accurately log trigger/ignition events at very short timescales. While fiddling with this I did notice some strange behavior from the Discrete VR conditioner.
For reference, the - pins on both the crank and cam sensors are common on the 5th gen VFR, and my setup has crank connected to the VR MAX input and cam connected to VR Discrete
With no crank sensor input, the VR Discrete conditioner worked at least up to a simulated 24000 RPM when a crank signal was present on the VR Max input the VR Discrete input would rapidly start dropping out around a simulated 3600RPM adding a 500mv offset to the VR- pin with a resistor divider powered off the 3.3v rail fixed this issue, so I haven't investigated further but hope this info may be useful to someone
For reference, the - pins on both the crank and cam sensors are common on the 5th gen VFR, and my setup has crank connected to the VR MAX input and cam connected to VR Discrete
With no crank sensor input, the VR Discrete conditioner worked at least up to a simulated 24000 RPM when a crank signal was present on the VR Max input the VR Discrete input would rapidly start dropping out around a simulated 3600RPM adding a 500mv offset to the VR- pin with a resistor divider powered off the 3.3v rail fixed this issue, so I haven't investigated further but hope this info may be useful to someone