Keronei lincoln Profile
Keronei lincoln

@lincoln_keros

Followers
181
Following
171
Media
62
Statuses
268

Software Engineer

Kisumu, Kenya
Joined April 2015
Don't wanna be here? Send us removal request.
@MutuaMuli254
Mutua Muli
2 months
Anyone who is a form four leaver interested in doing the following courses full sponsorship for 3 years: 1. Carpentry 2. Electrician 3. Masonary 4. Welding 5. Plumbing Tuition Fee fully sponsored Lunch fully sponsored
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@lincoln_keros
Keronei lincoln
2 months
Currently preparing an app with heavy dependency on Google Play services for publishing in Huawei App gallery and I found @ronnieonly 's article ( https://t.co/PvRBeJOLdH)on product flavors being a gem. Thanks for the good job Ronnie - I hope you still find time to impact.
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otieno.medium.com
If you need to develop more than one app for one project one might think of building two different android projects, fortunately, Androidโ€ฆ
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@lincoln_keros
Keronei lincoln
3 months
There has been some good and bad experiences in between, I will share them once the car can be driven.
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@lincoln_keros
Keronei lincoln
3 months
The ECU doesn't know who is at where, but counts NE(cam) signals then fires two injectors at once, the distr knows who is about to compress and I am lost in between. My next move is to install a sensor inside the distr to guide on who's about to explode, then I will be guided.
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@lincoln_keros
Keronei lincoln
3 months
Next is putting together the concept, I have tried a number of approaches including listening for the batch injections, then sending wasted spark, alternating between two pairings while aligning with a fuel signal - all seems to run well, but the biggest hurdle is at start.
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@lincoln_keros
Keronei lincoln
3 months
Days went by when I had stopped attempts and was purely reading about EMI in automotive environment, then I came across EMI-immune ICs, which can be used to drive the coils from MCU. I ordered one (TC4424) and there has been a great improvement since, no more restarts.
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@lincoln_keros
Keronei lincoln
3 months
The lack of proper testing tools contributed to this, at one point I drove the coil with one MCU and the other with LCD was close by and it still affected, so I knew it needed physical separation, later I dropped the LCD thing and focused on the restarting issue.
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@lincoln_keros
Keronei lincoln
3 months
I added another coil and the MCU ran into random restarts, this is the start of real trouble. Weeks went by trying to narrow down on the issue, I figured out it was caused by EMI, but how do I address it? Tried metallic enclosures, RC filters, optio Isolators but no success.
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@lincoln_keros
Keronei lincoln
3 months
Turns out the seller had given me 2 #52 and 2 #58, says they are usually interchangeable, but I told them 'my car doesn't run and has to be replaced with exact #52', so I got 4 #52. When the MCU drove the coil, I noticed something awkward on the LCD I had connected - scrambled.
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@lincoln_keros
Keronei lincoln
3 months
I went ahead and purchased the coils and an Arduino Mega(MCU) because it has more interrupt pins which allows better listening of things, got the 4 coils(ex-J) for KES. 10k and the MCU for ~KES. 2k. Put the code together and ran one coil, not bad, it was sparking well except 2.
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@lincoln_keros
Keronei lincoln
3 months
Once I had I known the target coils, I researched on how to work with them - which there's hardly any info available publicly, so I resorted to use troubleshooting resources used in engine misfires, and such, I was lucky to find a few. I had the basic info, next is basic tests.
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@lincoln_keros
Keronei lincoln
3 months
I started with probox coils, which didn't fit, it's a Denso coil with some label ending with 40, so they call it #40. Went through others and settled with size 52 for 2RZ/3ZR. Didn't buy them then - I needed to complete my homework on how they are fired and their dwell times.
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@lincoln_keros
Keronei lincoln
3 months
I already had some DIY trip computer(MPGuino), so I had tapped on one fuel injector + speed sensor and had some experience tinkering with Arduino around the engine. I drafted some workflow, then next was the search for fitting coils.
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@lincoln_keros
Keronei lincoln
3 months
I have been working on upgrading this Jalopy to semi Coil On Plugs. It started with a rough idea of how it could be implemented, but on searching online I found out the easiest approach was to add a few sensors, but I wasn't going to do that. So where do I start? #corolla #5AFE
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@lincoln_keros
Keronei lincoln
4 months
Small small wins here and there, got first gig in 2024, one more the same year which turned into long term and another one in May this year which is also long term. #Upwork
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@lincoln_keros
Keronei lincoln
8 months
Does anyone has info on converting a 5A engine to coil on plug? I am doing one currently and planning to use the distributor for the signal but I believe there's a better source for the signal.
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@SebbieMzing
Sebbie Mzing
1 year
i am loving this IoT session by @lincoln_keros #dcke24 #dcAt5 #FlutterconKE @droidconke
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@lincoln_keros
Keronei lincoln
1 year
Book your slot and be there, we will be delving into bit of electronics and how they can add some taste to your app.
@droidconke
droidconke
1 year
๐Ÿš€ Extend Your App's Functionality with IoT! ๐Ÿš€ @lincoln_keros will be sharing insights on how your app can capture raw data and initiate actions using IoT components like BLE, BT, NFC, and Wi-Fi. ๐ŸŒ๐Ÿ’ก Join us for a demo on effective integrations! Find out more about the
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@lincoln_keros
Keronei lincoln
1 year
It is not your manager's job to read your mind. So, if you need something communicate. Remember to communicate it with respect and with kindness. And lower yourself in front your manager because he deserves that.
@Vickyjr
Vicky Junior (Jr).
1 year
It is not you husband's job to read your mind. So, if you need something communicate. Remember to communicate it with respect and with kindness. And lower yourself in front of your husband because he is deserving of that.
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@lincoln_keros
Keronei lincoln
2 years
I am Kes. 10,447.0 away from clearing my HELB loan, this is a very important milestone in my financial journey.
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