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SECU-3 Lite ignition control unit

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STC

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Your CAR: AZLK 2140

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Post 22 Sep 2016, 23:58

SECU-3 Lite ignition control unit

Discussing SECU-3 Lite ignition control unit. It is cheap, simple and ignition-only ECU with embedded MAP sensor and coil drivers (BIP373).
SECU-3 Lite units are available for ordering. Only 60$.
We can send SECU-3 Lite to USA, Russia and other countries. To place on order, please write to order@secu-3.org.
http://secu-3.org/blok-mpsz-secu-3-lite/?lang=en
Page with other items available for order http://secu-3.org/order/?lang=en

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NOTE that some cheaters try to fabricate SECU-3 units or pass slightly modified versions as own developments thus violating my author rights! Be careful!
Author of the SECU-3™ project http://SECU-3.org. An open source engine control unit / Ignition control system, (C) 2007.
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STC

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Posts: 6633

Joined: 30 Apr 2013, 23:41

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SECU version: DIY SECU-3


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Post 19 Oct 2016, 00:08

Re: SECU-3 Lite ignition control unit

This article can be useful http://secu-3.org/secu-3-comparison/?lang=en
Comparison of SECU-3 units
Author of the SECU-3™ project http://SECU-3.org. An open source engine control unit / Ignition control system, (C) 2007.
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STC

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Post 31 Dec 2016, 05:05

Re: SECU-3 Lite ignition control unit

Configuring SECU-3 Lite board:
Image
Author of the SECU-3™ project http://SECU-3.org. An open source engine control unit / Ignition control system, (C) 2007.
Клуб проекта в Facebook https://www.facebook.com/groups/secu3club
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STC

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Your CAR: AZLK 2140

SECU version: DIY SECU-3


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Post 31 Dec 2016, 05:07

Re: SECU-3 Lite ignition control unit

Author of the SECU-3™ project http://SECU-3.org. An open source engine control unit / Ignition control system, (C) 2007.
Клуб проекта в Facebook https://www.facebook.com/groups/secu3club
Клуб проекта ВКонтакте https://vk.com/secu3club (вступаем!)
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STC

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Post 12 Feb 2017, 03:11

Re: SECU-3 Lite ignition control unit

Bluetooth board for SECU-3 Lite unit with DIY polygon. Some optional components for connecting of a tachometer are also here.
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http://secu-3.org/secu-3-lite-bluetooth-module/?lang=en
Author of the SECU-3™ project http://SECU-3.org. An open source engine control unit / Ignition control system, (C) 2007.
Клуб проекта в Facebook https://www.facebook.com/groups/secu3club
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STC

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Posts: 6633

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SECU version: DIY SECU-3


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Post 11 Mar 2017, 16:02

Re: SECU-3 Lite ignition control unit

Bare PCB for SECU-3 Lite.
Image
Author of the SECU-3™ project http://SECU-3.org. An open source engine control unit / Ignition control system, (C) 2007.
Клуб проекта в Facebook https://www.facebook.com/groups/secu3club
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Strecek

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Post 04 Dec 2017, 22:27

Re: SECU-3 Lite ignition control unit

Hello, I would like to use SECU-3 Lite unit to run Tatra V8 engine with eight pole VR sensor in distributor. (distributor with cancelled centrifugal and pneumatic advance regulator).
Please do you think its possible ? As I tried to check firmware and I found only Hall sensor version of distributor.
I would like to use dwell control as well.

Thank you
Strecek
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STC

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Post 05 Dec 2017, 00:04

Re: SECU-3 Lite ignition control unit

Strecek wrote:Hello, I would like to use SECU-3 Lite unit to run Tatra V8 engine with eight pole VR sensor in distributor. (distributor with cancelled centrifugal and pneumatic advance regulator).
Please do you think its possible ? As I tried to check firmware and I found only Hall sensor version of distributor.
I would like to use dwell control as well.

Thank you
Strecek


Yes, it possible. You should connect your VR sensor to CKPSx inputs and use firmware for Hall (and use high voltage distributor). Also, you may need to solder 100k instead of default 470k (resistor R32). It may be necessary if your sensor is too sensitive.
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Author of the SECU-3™ project http://SECU-3.org. An open source engine control unit / Ignition control system, (C) 2007.
Клуб проекта в Facebook https://www.facebook.com/groups/secu3club
Клуб проекта ВКонтакте https://vk.com/secu3club (вступаем!)
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tmarkala

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Post 08 Dec 2017, 02:33

Re: SECU-3 Lite ignition control unit

Hello!

I'm looking to convert Nissan SR20DE engine to carburetors.
Do you have any experience with Nissan CAS optical sensor which is located in distributor?
Could SECU-3 use its position signal?

Various trigger wheels can be used. For example:
https://www.diyautotune.com/product/50- ... or-ka24de/


Thanks
Tomislav
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STC

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Post 08 Dec 2017, 15:02

Re: SECU-3 Lite ignition control unit

It doesn't matter which type of sensor used - VR, Hall, Optical. The configuration of trigger wheel is important. Trigger wheel shown on the picture has 2 sequences of 12-1 teeth and 1 gap for determination of 1-st cylinder for full sequential operation (2 sensors).
SECU-3 firmware should work with mentioned trigger wheel, but note that SECU-3 Lite has only 2 ignition outputs and you can't use full sequential ignition on 4-cylinder engine. You can either use SECU-3 Lite in semi-sequential mode or switch to use SECU-3T if you want full sequential. For semi-sequential operation one sensor is enough (reading of 12-1 sequences).
Attachments
2 x 12-1 plus gap for full sequential operation.
Author of the SECU-3™ project http://SECU-3.org. An open source engine control unit / Ignition control system, (C) 2007.
Клуб проекта в Facebook https://www.facebook.com/groups/secu3club
Клуб проекта ВКонтакте https://vk.com/secu3club (вступаем!)
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