Search found 33 matches

by Ahmad
Thu Jan 16, 2020 11:19 pm
Forum: Hardware
Topic: rusEfi own wide band controller board add-on using CJ125
Replies: 328
Views: 47381

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

Bosch 30615 = Bosch 40103 = CJ125(LQFP-32)
by Ahmad
Thu Jan 16, 2020 10:26 pm
Forum: Hardware
Topic: rusEfi own wide band controller board add-on using CJ125
Replies: 328
Views: 47381

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

The part number is 30615.
In our country, we have many local chip stores, because repairing of commercial ECUs is very popular.
I ordered 30615 from one of this stores. But the gateway of these chips is chinese distributors(www.1688.com).
My schematic/Code is same as RUSEFI with some modifications.
by Ahmad
Thu Jan 16, 2020 12:53 am
Forum: Hardware
Topic: rusEfi own wide band controller board add-on using CJ125
Replies: 328
Views: 47381

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

You can find anything in china (www.1688.com).
But in your local store search these part numbers:
Bosch 30481
Bosch 30615
by Ahmad
Wed Jan 15, 2020 9:25 pm
Forum: Hardware
Topic: rusEfi own wide band controller board add-on using CJ125
Replies: 328
Views: 47381

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

I'm facing some issues with the CJ125 chip. All the SPI communications yield the right results, the Lambda readings are correct (only tested in open air) but the temperature output from the chip seems stuck at ~0.86 V regardless of how hot or cold the sensor is. Tried 4 different chips but all of t...
by Ahmad
Mon Dec 23, 2019 7:13 pm
Forum: Hardware
Topic: rusEfi own wide band controller board add-on using CJ125
Replies: 328
Views: 47381

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

No doubt mck1117.
The temperature displaying results better user interface.
by Ahmad
Wed Dec 18, 2019 8:17 am
Forum: Hardware
Topic: rusEfi own wide band controller board add-on using CJ125
Replies: 328
Views: 47381

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

I found an empirical formula for temperature(not bad for starting :mrgreen: ):

T = Tcal * vUrCal / vUr

Tcal = 750 for LSU 4.2
Tcal = 780 for LSU 4.9
by Ahmad
Sun Dec 15, 2019 2:33 am
Forum: Hardware
Topic: rusEfi own wide band controller board add-on using CJ125
Replies: 328
Views: 47381

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

Where did you find the curve of temperature vs Nernst resistance or UR?
by Ahmad
Thu Nov 28, 2019 7:37 pm
Forum: Hardware
Topic: Sprut - A newbies try to design an ECU
Replies: 72
Views: 9477

Re: Sprut - A newbies try to design an ECU

960 wrote:
Wed Nov 20, 2019 1:38 am
So even if you strip your whole pcb to only the mcu, 3.3V and a crystal, it should run
Decoupling capacitors may be placed under MCU socket!
by Ahmad
Fri Nov 01, 2019 5:12 pm
Forum: Hardware
Topic: My own brain board
Replies: 10
Views: 1238

Re: My own brain board

My experimental ECU board is complete and now i want to edit firmware to match it. the board consist of: - STM32F407V module - L9779 module for Digital I/O, Stepper motor Driver(we have gas mixer instead of injectors), ... - CJ125(TQFP) module for Lambda - IGBT module with current sense for ignition...
by Ahmad
Fri Nov 01, 2019 4:52 pm
Forum: Software
Topic: How to compile the firmware
Replies: 87
Views: 36899

Re: How to compile the firmware

I'm familiar with IAR and STM32CubeIDE, not gnu toolchain.
Now I want to modify some GPIO and Timer setting of your firmware and compile it.
Below is the first headache of make:
first error.png
first error.png (17.49 KiB) Viewed 3821 times
by Ahmad
Fri Nov 01, 2019 4:43 pm
Forum: Software
Topic: How to compile the firmware
Replies: 87
Views: 36899

Re: How to compile the firmware

Is it possible to use the STM32CubeIDE for compiling?
by Ahmad
Fri Sep 20, 2019 12:36 pm
Forum: Hardware
Topic: rusEfi own wide band controller board add-on using CJ125
Replies: 328
Views: 47381

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

JRD McLAREN wrote:
Thu Sep 19, 2019 12:46 pm
..Voltages are from "my" gui, it's UR and UA voltages ...
no VCC or SPI voltages ...
No doubt
but my attention is SPI voltages. if we use 3.3V SPI, we walk on the borders that can be changed by ambient temperature.
by Ahmad
Thu Sep 19, 2019 11:02 am
Forum: Hardware
Topic: rusEfi own wide band controller board add-on using CJ125
Replies: 328
Views: 47381

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

Thanks a lot.
Gui is excellent :shock:
but 0.7VCC = 3.5V
by Ahmad
Thu Sep 19, 2019 10:29 am
Forum: Hardware
Topic: rusEfi own wide band controller board add-on using CJ125
Replies: 328
Views: 47381

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

Are you sure CJ125 works with 3.3V SPI?
by Ahmad
Tue Sep 17, 2019 11:52 am
Forum: Hardware
Topic: microRusEfi
Replies: 257
Views: 51034

Re: microRusEfi

Sure, I will do.
but i don't know function of some pins.
for example: PA5, PC7, ...
by Ahmad
Tue Sep 17, 2019 11:46 am
Forum: Hardware
Topic: microRusEfi
Replies: 257
Views: 51034

Re: microRusEfi

Is it possible to show functions of pins on schematic or an excel file or cubeMX file?
For example, PC6 may be PC6_TIM3_CH1.
Or a cubeMX file same as below:
by Ahmad
Thu Sep 12, 2019 11:49 am
Forum: Hardware
Topic: L9788 - multifunction IC for automotive engine management system
Replies: 17
Views: 2081

Re: L9788 - multifunction IC for automotive engine management system

You are true Andrey. That file is not a complete datasheet. But CK110 is not Engine Management device same as TLE8888. It seems to be a simple IGBT driver with some diagnostic.
by Ahmad
Thu Sep 12, 2019 8:54 am
Forum: Hardware
Topic: L9788 - multifunction IC for automotive engine management system
Replies: 17
Views: 2081

Re: L9788 - multifunction IC for automotive engine management system

TLE8888 and L9779 are about identical. My limitation is availability in local stores.
by Ahmad
Thu Sep 12, 2019 8:47 am
Forum: Hardware
Topic: My own brain board
Replies: 10
Views: 1238

Re: My own brain board

So you have one debug LED that's something! I would recommend at least two debug LEDs. Please be aware that you would need to compile your own firmware if you want your FATAL ERROR debug LED to be on a custom pin, FATAL ERROR could not be adjusted via configuration by design. rusEfi stm32f407 defau...
by Ahmad
Thu Sep 12, 2019 8:31 am
Forum: Hardware
Topic: L9788 - multifunction IC for automotive engine management system
Replies: 17
Views: 2081

Re: L9788 - multifunction IC for automotive engine management system

For 8 cylinder you can use 2 x MC33810. Each has 4 x ignition pre-driver + 4 x injector driver. And a loooot of diagnostic and protection features. Seems I'm going to use 2 x MC33810 for 6 cyl. L9779WD-SPI is quite similar to TLE8888. L9779WD-SPI has other feathers (SEO, Carnk, CAN, Stepper, ...)
by Ahmad
Thu Sep 12, 2019 8:24 am
Forum: Hardware
Topic: L9788 - multifunction IC for automotive engine management system
Replies: 17
Views: 2081

Re: L9788 - multifunction IC for automotive engine management system

Bosch 30397 = Bosch CK110
I read above datasheet and seems It has simple 16bit SPI function for diag.
by Ahmad
Wed Sep 11, 2019 3:20 pm
Forum: Hardware
Topic: L9788 - multifunction IC for automotive engine management system
Replies: 17
Views: 2081

Re: L9788 - multifunction IC for automotive engine management system

I like too for 8 cylinders.
L9788 is in standardization phase and not ready for use.
I want to use tow L9779WD-SPI now.
For 6-ch ignitor pre-driver, you can use Bosch CK110.
by Ahmad
Wed Sep 11, 2019 2:00 pm
Forum: Hardware
Topic: My own brain board
Replies: 10
Views: 1238

Re: My own brain board

I have another question.
Is the free Tuner Studio best choice for monitoring/tuning?
May last project was a generator controller/monitoring and I wrote my own software.
by Ahmad
Wed Sep 11, 2019 1:47 pm
Forum: Hardware
Topic: My own brain board
Replies: 10
Views: 1238

Re: My own brain board

Abricos wrote:
Wed Sep 11, 2019 1:32 pm
LED ?
STM32F407V_Brain_Ahmad__01.png
4 LEDs are for 3.3V, USB5V, SDcard and Debug.
Schematic:
by Ahmad
Wed Sep 11, 2019 1:38 pm
Forum: Hardware
Topic: My own brain board
Replies: 10
Views: 1238

Re: My own brain board

Thanks for new topic. LEDs can be placed on mother board instead of brain board. The brain board may be used for other projects. I use Altium and our local PCB makers have some limits on manufacturing (clearance, pad/via size, ...). The price and size of an STM32F4Discovery and its extra components ...
by Ahmad
Wed Sep 11, 2019 11:34 am
Forum: Hardware
Topic: My own brain board
Replies: 10
Views: 1238

My own brain board

After 5 days, my brain board pcb is finished :?
STM32F407V_Brain_Ahmad.png
STM32F407V_Brain_Ahmad.png (285.8 KiB) Viewed 1206 times
I want to use screw-less connector(MX250B-3.5) for mother board, because the test engine is a stationary generator.
Max250B-3.5.jpg
Max250B-3.5.jpg (98.66 KiB) Viewed 1206 times
Any comment?
by Ahmad
Tue Sep 10, 2019 5:11 pm
Forum: Hardware
Topic: L9788 - multifunction IC for automotive engine management system
Replies: 17
Views: 2081

Re: microRusEfi

How to get in less than qty 1k? https://www.st.com/en/automotive-analog-and-power/l9788.html You are American, not Iranian! Send a sample request to ST and get that on red carpet ;) Many years ago, I found a bug in one of the Buck regulators of ST. I sent an Email to ST. Answer of ST: you are from ...
by Ahmad
Tue Sep 10, 2019 2:00 pm
Forum: Hardware
Topic: microRusEfi
Replies: 257
Views: 51034

Re: microRusEfi

See reverse polarity pmosfet noted at the below link. The pmosfet is typically better that a protection diode. https://rusefi.com/wiki/index.php?title=Manual:Hardware In this case it's only negligibly better. MRE draws only a trivial current directly from IGN (BAT, BATPA, BATPB). Probably single di...
by Ahmad
Sat Sep 07, 2019 10:32 pm
Forum: Hardware
Topic: Frankenso - ECU shield compatible with OEM case / official
Replies: 541
Views: 142969

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

Hi
Is it prefer to use SDIO for MMC?
Is it supported with your code?
by Ahmad
Fri Aug 30, 2019 11:03 pm
Forum: Hardware
Topic: rusEfi own wide band controller board add-on using CJ125
Replies: 328
Views: 47381

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

I found LQFP version of CJ125 in a local store with low price :D
It is marked 30615 (or 30522).
This package has separate VCC/GND for Signal path and better noise rejection.
Any comment on schematic will be appreciated.