Search found 3407 matches

by kb1gtt
Tue Aug 20, 2019 11:42 am
Forum: Hardware
Topic: EFI for small engines
Replies: 18
Views: 355

Re: EFI for small engines

My concerns are not vib. Vib can be dealt with by making component selections that play nice. My concerns are the thin air and how it effects the thermal properties. I'm sure you know about carb heaters for deicing. There are many thermal considerations which need to be considered. My next big conce...
by kb1gtt
Mon Aug 19, 2019 5:24 am
Forum: Hardware
Topic: microRusEfi
Replies: 137
Views: 4922

Re: microRusEfi

Don't I recall q1 is switching? Aka power does not directly mean voltage by amps. Well instantious yes but not on a longer time basis like a linear. I wonder if we can decrease the watts with a faster q1. Also I understand D1 gets hot. Perhaps that would have some thermal via's.
by kb1gtt
Mon Aug 19, 2019 3:52 am
Forum: Hardware
Topic: EFI for small engines
Replies: 18
Views: 355

Re: EFI for small engines

If I were to strap a motor to my back, a varation of $300 would not be a concern. Also it would be carb. As you mentioned EFI has issues with minimal improvements. I'm not so worried about vib. I'm more concerned with thermal.
by kb1gtt
Mon Aug 19, 2019 3:42 am
Forum: Hardware
Topic: microRusEfi
Replies: 137
Views: 4922

Re: microRusEfi

What does your no load claim for volts and amps? Aka power supply numbers.
by kb1gtt
Mon Aug 19, 2019 3:40 am
Forum: Hardware
Topic: microRusEfi
Replies: 137
Views: 4922

Re: microRusEfi

Does 8888 and/or stm32 have internal temperature sensors? Those would tell you better if there is a thermal problem. With only half the case it is not really correct.
by kb1gtt
Sun Aug 18, 2019 3:29 pm
Forum: Hardware
Topic: EFI for small engines
Replies: 18
Views: 355

Re: EFI for small engines

Why does the ECU need a connector when the leads are really short and everything is so easy to access? Are there other low cost weather seals? Also why does it matter if it's costs less then $300? I think MRE is likely a good short term solution.
by kb1gtt
Tue Aug 13, 2019 9:40 am
Forum: Hardware
Topic: rusEfi own wide band controller board add-on using CJ125
Replies: 260
Views: 21810

Re: rusEfi own wide band controller board add-on using CJ125

I have not, and I don't think anyone here has. It seems to be an interesting chip, very similar to the CJ125. What attracts you tho this instead of the CJ125? My 30 second review of the datasheet seems to indicate very similar features. Are there differences that of of interest? Below is a picture o...
by kb1gtt
Sat Aug 10, 2019 11:24 pm
Forum: Hardware
Topic: microRusEfi
Replies: 137
Views: 4922

Re: microRusEfi

Glad to hear you got it working with a leakage resistor. That is better, as the light is more intuitive than my schematic. Mine was inverted.
by kb1gtt
Sat Aug 10, 2019 11:17 pm
Forum: Software
Topic: TMS570 first steps
Replies: 12
Views: 2991

Re: TMS570 first steps

@abecedarian is the one who was making progress on this. I think I recall hearing that cancer did not go well for him, and I understand he will not be replying to your comments :(
by kb1gtt
Sat Aug 10, 2019 9:30 am
Forum: Hardware
Topic: microRusEfi
Replies: 137
Views: 4922

Re: microRusEfi

Do I see the injector blinking light is wired as noted in this sketch?
Test_Fixture_Sketch.png
Test_Fixture_Sketch.png (9.19 KiB) Viewed 249 times
Also see this picture for a suggested strain relief method. This works better than hot glue.
PCB_Strain_Relief.jpg
PCB_Strain_Relief.jpg (192.86 KiB) Viewed 249 times
Also dental floss is very important.
by kb1gtt
Wed Aug 07, 2019 4:05 pm
Forum: Hardware
Topic: Frankenso - ECU shield compatible with OEM case / official
Replies: 510
Views: 110887

Re: Frankenso - ECU shield compatible with OEM case / official

I put several blah.cache.lib files in my repo, Frankenso should be updated some time soon-ish to include this file.
by kb1gtt
Wed Aug 07, 2019 12:51 am
Forum: Hardware
Topic: Frankenso - ECU shield compatible with OEM case / official
Replies: 510
Views: 110887

Re: Frankenso - ECU shield compatible with OEM case / official

From memory I'm fairly sure I've done so8 in the bottom side.

Can you rescue? I recall the cache fine if have as it can be used to avoid the rescue file. Also what file are you looking for? Frankienstien frankenso other?
by kb1gtt
Tue Aug 06, 2019 9:25 pm
Forum: Hello World
Topic: Hello Off Road World!
Replies: 26
Views: 748

Re: Hello Off Road World!

I agree that the 72V vs 100V is not a big deal. I would expect the potential issue is that your fuel delivery at idle is a bit less accurate. There is a small chance this less accurate could cause some oscillation, but that is not likely and for a race vehicle, who cares if your idle is nice and sil...
by kb1gtt
Tue Aug 06, 2019 9:19 am
Forum: Hardware
Topic: Low side driver.
Replies: 3
Views: 140

Re: Low side driver.

It's quite weak with the 2.5A max drive. That might not even be enough for your dome light. It would likely be good for small lights like dash lights. Or if you have LED lights you might get dome or brake lights. However I recall incandescent brake lights are around 24W, so about 2A. That's already ...
by kb1gtt
Tue Aug 06, 2019 9:13 am
Forum: Hardware
Topic: Frankenso - ECU shield compatible with OEM case / official
Replies: 510
Views: 110887

Re: Frankenso - ECU shield compatible with OEM case / official

I've had 0805, 1206 and some larger chip packages survive a 2nd reflow. I've been amazed a how sticky the solders surface tension is. I was using Kester 256, which is a leaded solder. I do not know if the surface tension is different with different solders. Perhaps different solders would be less st...
by kb1gtt
Tue Aug 06, 2019 9:09 am
Forum: Hello World
Topic: Hello from Wisconsin
Replies: 6
Views: 139

Re: Hello from Wisconsin

I would think a timer could be fairly easily added with an external off delay relay timer. Basically instead of the key operating a normal relay, change that relay for an off delay timer relay. Then when you turn off the key, it keeps the engine running for a set time. If you need an emergency kill ...
by kb1gtt
Tue Aug 06, 2019 8:55 am
Forum: Hello World
Topic: Hello Off Road World!
Replies: 26
Views: 748

Re: Hello Off Road World!

That sounds like the mess with KC4 files opened with KC5. That should work just fine for viewing the files. It would likely be an issue with new development efforts. We typically like things to be more clean, so we avoid the entire rescue thing. If you had KC4, the entire rescue thing goes away. It ...
by kb1gtt
Sun Aug 04, 2019 7:06 pm
Forum: Hello World
Topic: Hello Off Road World!
Replies: 26
Views: 748

Re: Hello Off Road World!

Did you get your copy of the repo with git command line utility or some git GUI utility? Or did you try it as the zip file?

(edited by r)
by kb1gtt
Sun Aug 04, 2019 3:02 pm
Forum: Hardware
Topic: Low side driver.
Replies: 3
Views: 140

Re: Low side driver.

This chip would be good for lights, perhaps a fan, or other such items which are switched on and off at relatively slow frequencies. Rapidly switched inductive devices like injectors would not work well with this kind of driver chip.
by kb1gtt
Sun Aug 04, 2019 9:13 am
Forum: Hello World
Topic: Hello from Wisconsin
Replies: 6
Views: 139

Re: Hello from Wisconsin

Can you detail turbo timer? I think you mean when key off, engine remains at idle for blah long then turns off. Is that what you intended? Or did you perhaps mean something different?
by kb1gtt
Fri Aug 02, 2019 10:08 am
Forum: Hello World
Topic: Hello Off Road World!
Replies: 26
Views: 748

Re: Hello Off Road World!

It sounds like NOXZ is not going to get a chance to look at the 33816 for a couple more days / weeks. When do you think you would try to make the proto board? Also do you plan for the 33816 or are you going to try the PT2000? I have more work which needs to be done to the PT2000, and the MC33816 is ...
by kb1gtt
Wed Jul 31, 2019 6:10 pm
Forum: Your car & your engine
Topic: 1990 Geo Storm GSI - Advice/Suggestions? #18
Replies: 261
Views: 24520

Re: 1990 Geo Storm GSI - Advice/Suggestions? #18

For NO2, it takes around 30 seconds to a minute to determine an AFR. With many cells in TS, your going to spend allot in fuel to get your tune for each cell. As well, this prolonged tuning time will likely mean you run lean, which could cause problems. I would suggest a WO2 as it would be lower cost...
by kb1gtt
Tue Jul 30, 2019 9:34 am
Forum: Your car & your engine
Topic: 1990 Geo Storm GSI - Advice/Suggestions? #18
Replies: 261
Views: 24520

Re: 1990 Geo Storm GSI - Advice/Suggestions? #18

What do you expect from NO2? Why would you use it?
by kb1gtt
Mon Jul 29, 2019 9:54 am
Forum: Your car & your engine
Topic: 1990 Geo Storm GSI - Advice/Suggestions? #18
Replies: 261
Views: 24520

Re: 1990 Geo Storm GSI - Advice/Suggestions? #18

I can't seem to find the SPL-2 at wago, The SPL-2 looks very much like the 222 series. This makes me excited, because it means there is hope that we'll see the same but based on the 221 series. https://www.wago.com/medias/Electrical-Installation-60337976.pdf?context=bWFzdGVyfGRvd25sb2Fkc3wzMjcwNjg3f...
by kb1gtt
Sun Jul 28, 2019 2:01 pm
Forum: Hardware
Topic: microRusEfi
Replies: 137
Views: 4922

Re: microRusEfi

Wow .. it's lively there ... Yah, that slack think is crazy. I often can not keep up with the messages. It's common that it tells me there are 500+ message from after lunch and before I get home from work. Most days it's like 50 to 100 messages a day. It's crazy and it's usually good to see the con...
by kb1gtt
Sun Jul 28, 2019 1:50 pm
Forum: Hardware
Topic: microRusEfi
Replies: 137
Views: 4922

Re: microRusEfi

Maxxim notes 4V - 5V for 40mS is normal design specs for automotive cold cranking. AKA cold temps, small wires, etc. We should survive a short low blip. They also note 6V for 20 seconds.
https://www.maximintegrated.com/en/app- ... vp/id/4240
by kb1gtt
Sun Jul 28, 2019 11:28 am
Forum: Hardware
Topic: microRusEfi
Replies: 137
Views: 4922

Re: microRusEfi

I understand V5V_STBY the key we are faced with is how did it die, and should we take preventive measures to prevent it from dying this way again? Right now we do not know why the TLE8888 died.
by kb1gtt
Sun Jul 28, 2019 10:30 am
Forum: Your car & your engine
Topic: 1990 Geo Storm GSI - Advice/Suggestions? #18
Replies: 261
Views: 24520

Re: 1990 Geo Storm GSI - Advice/Suggestions? #18

The issues with the solder shrink tubes are perhaps less than obvious and perhaps it's issues are things you are less concerned with. I know my boss loves those things, as well my boss has a history that everything he sent to EMI testing has failed horribly. Everything I've sent to EMI testing has p...
by kb1gtt
Sun Jul 28, 2019 3:51 am
Forum: Hardware
Topic: Deucalion - son of Prometheus, also a compact ECU shield!
Replies: 16
Views: 1055

Re: Deucalion - son of Prometheus, also a compact ECU shield!

I likes the diodes array.

I also read this as Delicious. I also think yum when I read it.