Search found 139 matches
- Thu Apr 20, 2017 12:39 pm
- Forum: Dev: Hardware
- Topic: analog inputs: op-amp + divider - Russian - now MCP6004
- Replies: 124
- Views: 140915
Re: analog inputs: op-amp + divider - Russian - now MCP6004
https://s3.postimg.org/uplrfdsu7/opamp1.png I'm not sure about which resistors you are using on output (if you are using any) but this might help. Currently I have a 400mV headroom on my sensors output, using a 1/2k bridge (5v->3.33v) Since the sampling is at only 1kHz I will try to increase those ...
- Sat Apr 15, 2017 1:10 am
- Forum: Dev: Hardware
- Topic: Prometheus - NEW compact ECU shield!
- Replies: 160
- Views: 192749
Re: Prometheus - NEW compact ECU shield!
Haha one day us metric folks will conquer the world! (There's only USA left anyway :D ) I was talking about the inside of the ECU since you have to drive the primary directly there, all pencil coils are potted anyway indeed. I remember seeing the CBR coils spiking going up around 120v on the primary...
- Fri Apr 14, 2017 10:02 pm
- Forum: You and your build
- Topic: Honda CBR 600 RR
- Replies: 12
- Views: 11264
Re: Honda CBR 600 RR
Stock injectors are 190cc at 45psi I think. (all 8 of them, each stage has different spray pattern)
- Fri Apr 14, 2017 5:03 pm
- Forum: Dev: Hardware
- Topic: Prometheus - NEW compact ECU shield!
- Replies: 160
- Views: 192749
Re: Prometheus - NEW compact ECU shield!
Isn't it more around 100-150V? On coil sticks at least.
Also, can we use proper units?
Maybe he can use slots to increase creapage distance. (like some power supplies)
I don't think commercial ECUs are using any fancy systems for protection other than conformal coating.
Also, can we use proper units?
Maybe he can use slots to increase creapage distance. (like some power supplies)
I don't think commercial ECUs are using any fancy systems for protection other than conformal coating.
- Fri Apr 14, 2017 4:16 pm
- Forum: You and your build
- Topic: Honda CBR 600 RR
- Replies: 12
- Views: 11264
- Thu Apr 13, 2017 3:05 pm
- Forum: Dev: Hardware
- Topic: Prometheus - NEW compact ECU shield!
- Replies: 160
- Views: 192749
Re: Prometheus - NEW compact ECU shield!
Very cool!
This is a lot more like what I am looking for, you got me interested
This is a lot more like what I am looking for, you got me interested
- Thu Apr 13, 2017 2:39 pm
- Forum: Dev: Hardware
- Topic: Current status of working STM32 chips
- Replies: 4
- Views: 4980
Re: Current status of working STM32 chips
Only a few are pin compatible, also the peripherals are different based on the release date. GPIO and ADC went from V1 to V3, I2C V1 was so bugged you could barely, etc. I.e the F1 uses the oldest (some bugged) peripherals but is pin compatible with the F3 which uses recent ones. F0 came after and h...
- Thu Apr 13, 2017 2:22 pm
- Forum: Dev: Hardware
- Topic: Programmable mixed signal IO
- Replies: 6
- Views: 5453
Re: Programmable mixed signal IO
Yes, so does the STM32.
I was talking about what's between the MCU pin and the connector pin.
I am wondering about that myself, that's why I want to discuss it.
I was talking about what's between the MCU pin and the connector pin.
I am wondering about that myself, that's why I want to discuss it.
- Thu Apr 13, 2017 12:47 pm
- Forum: Dev: Software
- Topic: Hybrid injection strategy
- Replies: 20
- Views: 14003
Re: Hybrid injection strategy
Ultimately it is about a more consistent fuel delivery, a 1us error on a 10ms pulse has far more effect then a 1us error on a 20ms pulse. OEM ECUs are far more complex than an aftermarket and its all aimed at extracting the most exact fuelling, aftermarket ECUs are greatly simplified, there are ver...
- Wed Apr 12, 2017 11:54 pm
- Forum: Dev: Hardware
- Topic: Programmable mixed signal IO
- Replies: 6
- Views: 5453
Re: Programmable mixed signal IO
A less components to solder, more DACs, 5v ADC, etc.
It's mostly there for reference.
It's mostly there for reference.
- Wed Apr 12, 2017 11:40 pm
- Forum: Dev: Hardware
- Topic: Programmable mixed signal IO
- Replies: 6
- Views: 5453
Programmable mixed signal IO
So I though we could talk about programmable mixed signal IO. In other words, ecu pins that can do ADC, DAC, PWM, ICU, digital input or output based on how you decide to program them. A lot of after market ECU have that on a few pins. Here's an IC that does just that: https://www.maximintegrated.com...
- Wed Apr 12, 2017 10:08 pm
- Forum: Dev: Software
- Topic: Hybrid injection strategy
- Replies: 20
- Views: 14003
Re: Hybrid injection strategy
With this strategy you have longer injector pulses at low load, any jitter in timing is reduced because its a percentage of the pulse length . At higher loads its less important because economy and emissions are less of an issue. As well as the timing issue as soon as the injector opens the pressur...
- Wed Apr 12, 2017 5:57 pm
- Forum: Dev: Software
- Topic: Hybrid injection strategy
- Replies: 20
- Views: 14003
Re: Hybrid injection strategy
I am a bit lost, I don't see how this would make any difference. You still need the same amount of fuel, therefore you need the same pulse width. When the pulse starts does not have anything to do with the quantity of fuel delivered. Also you'd want to avoid multiple pulses because of injector dead ...
- Tue Apr 11, 2017 3:20 pm
- Forum: Dev: Hardware
- Topic: analog inputs: op-amp + divider - Russian - now MCP6004
- Replies: 124
- Views: 140915
Re: analog inputs: op-amp + divider - Russian - LMV324IDT
I need it for the knock sensor (sampling at 115kHz), but in this case the GBWP is more than sufficient indeed. I agree, we should not care about values near the rails, as the sensors should not go anywhere near that, it should be used to detect open loops. I would not use the same topology for knoc...
- Tue Apr 11, 2017 1:16 pm
- Forum: Dev: Hardware
- Topic: analog inputs: op-amp + divider - Russian - now MCP6004
- Replies: 124
- Views: 140915
Re: analog inputs: op-amp + divider - Russian - LMV324IDT
The input can go for that range, the issue is the output. That ST chip is much better about actually being a rail to rail chip. Is .2V either rail close enough? See page 6 for VCC = 5V found in aneox's link. Snippet below. ST_LMV324_rail.PNG Using the same opamp on my design, I have the same behavi...
- Mon Apr 10, 2017 1:41 pm
- Forum: Dev: Hardware
- Topic: let's choose an enclosure
- Replies: 121
- Views: 120767
Re: let's choose an enclosure
I think it's definitely worth a try.
You can also solder the headers directly on the boards. (from the side of the board, one row on each side, but you need 1.2mm thick PCBs)
You can also solder the headers directly on the boards. (from the side of the board, one row on each side, but you need 1.2mm thick PCBs)
- Mon Apr 10, 2017 1:34 pm
- Forum: Dev: Hardware
- Topic: analog inputs: op-amp + divider - Russian - now MCP6004
- Replies: 124
- Views: 140915
Re: analog inputs: op-amp + divider - Russian - now MCP6004
That might actually work.andreika wrote:There's also an option to use an external negative bias circuit like LM7705 - it's not that expensive...kb1gtt wrote:there are some op-amps out there that have very small internal rail voltage generating circuits
Especially that you don't need one per channel.
- Mon Apr 10, 2017 9:47 am
- Forum: Dev: Hardware
- Topic: analog inputs: op-amp + divider - Russian - now MCP6004
- Replies: 124
- Views: 140915
Re: analog inputs: op-amp + divider - Russian - LMV324IDT
The input can go for that range, the issue is the output. That ST chip is much better about actually being a rail to rail chip. Is .2V either rail close enough? See page 6 for VCC = 5V found in aneox's link. Snippet below. ST_LMV324_rail.PNG Using the same opamp on my design, I have the same behavi...
- Mon Apr 10, 2017 8:55 am
- Forum: Dev: Hardware
- Topic: let's choose an enclosure
- Replies: 121
- Views: 120767
Re: let's choose an enclosure
I still think pin headers would work fine as long as you share the load. If AEM still does it, it must be working fine, they've been doing this for 20+ years. This is the current design for their EMS V2: (found on a supra forum) https://s10.postimg.org/60ej4dv45/IMG_6784_zps0dmmphzg.jpg https://s10....
- Sun Apr 09, 2017 11:32 pm
- Forum: Dev: Hardware
- Topic: let's choose an enclosure
- Replies: 121
- Views: 120767
Re: let's choose an enclosure
Maybe we can use PCIe or m2 connectors for signals? (slot the adapter board directly in it) Even an SAS drive connector? http://www.molex.com/molex/products/family?key=serial_attached_scsi_sff_8484&channel=products&chanName=family&pageTitle=Introduction&parentKey=board_to_board_conne...
- Fri Apr 07, 2017 10:31 am
- Forum: Dev: Software
- Topic: Revision control systems
- Replies: 39
- Views: 30067
Re: Revision control systems
My pleasure
- Fri Apr 07, 2017 12:11 am
- Forum: Dev: Hardware
- Topic: let's choose an enclosure
- Replies: 121
- Views: 120767
Re: let's choose an enclosure
Often with multilock/molex you have different part numbers for the same connector based on random things like plating so there might be 3-4 compatible references for that one.
Also in this case the pictures are from a civic and a lancer evo, not a subaru. (yellow connector)
Also in this case the pictures are from a civic and a lancer evo, not a subaru. (yellow connector)
- Fri Mar 24, 2017 1:56 pm
- Forum: Dev: Hardware
- Topic: analog inputs: op-amp + divider - Russian - now MCP6004
- Replies: 124
- Views: 140915
Re: stm32f4 MPU module LQFP 208
It's probably simpler to use a LIN Bus
- Fri Mar 24, 2017 9:55 am
- Forum: Misc
- Topic: Slack channel
- Replies: 29
- Views: 60733
Slack channel
Very good idea for the slack team, you should create one.
EDIT: here you are:
HOWTO including link https://github.com/rusefi/rusefi/wiki/HOWTO_join_slack_channel
login https://rusefi.slack.com/
EDIT: here you are:
HOWTO including link https://github.com/rusefi/rusefi/wiki/HOWTO_join_slack_channel
login https://rusefi.slack.com/
- Wed Mar 22, 2017 12:31 pm
- Forum: Dev: Software
- Topic: Firmware developent status
- Replies: 499
- Views: 735725
Re: Firmware developent status
You can add the "* text oel=lf" in .gitattributes What happens for my projects is that they are always ended with LF. There have been rare cases where I had to fix the CRLF crap, but I only had to do it once and never had any issues again. This is what I'm talking about: https://ekkescorne...
- Wed Mar 22, 2017 11:08 am
- Forum: Dev: Software
- Topic: Firmware developent status
- Replies: 499
- Views: 735725
Re: Firmware developent status
arm-none-eabi-size build/rusefi.elf text data bss dec hex filename 237776 3984 181824 423584 676a0 build/rusefi.elf That was the "Smart build" that was preventing to compile all the files since the configs are in a different folder. https://github.com/rusefi/rusefi/pull/379
- Wed Mar 22, 2017 9:43 am
- Forum: Dev: Software
- Topic: Firmware developent status
- Replies: 499
- Views: 735725
Re: Firmware developent status
https://github.com/rusefi/rusefi/blob/master/.gitattributes#L6 This is messing with line endings on linux... It's best to set it to LF (or autocrlf true) and let git do the conversions. Because of this I won't be able to merge the changes unless I fix a *lot* of files. I never had to touch these set...
- Tue Mar 21, 2017 11:13 am
- Forum: Dev: Software
- Topic: Firmware developent status
- Replies: 499
- Views: 735725
Re: Firmware developent status
You are already using code optimisation, else it would probably not fit in the flash.
LTO is just a better type of optimisation.
I'm having a look at the ChibiOS 3 port.
LTO is just a better type of optimisation.
I'm having a look at the ChibiOS 3 port.
- Tue Mar 21, 2017 9:11 am
- Forum: Dev: Software
- Topic: Firmware developent status
- Replies: 499
- Views: 735725
Re: Firmware developent status
Also if you want to use LTO with GCC 5/6 you will have to use ChibiOS 3. Why? Is that a Chibios 2 bug? What's the relationship between LTO, GCC 5+ and ChibiIS 3? Migrating rusEfi to ChibiOS 3 is a bit more involved than just pointing at the right version of ChibiOS git. Yes it's a ChibiOS bug as fa...
- Mon Mar 20, 2017 11:47 pm
- Forum: Dev: Software
- Topic: Firmware developent status
- Replies: 499
- Views: 735725
Re: Firmware developent status
https://github.com/rusefi/rusefi/blob/master/firmware/Makefile#L62 So yes, softfp is not exactly "FPU is disabled" I see you've edited that, but still a great question why softfp - https://github.com/rusefi/rusefi/issues/375 Yes, it did not do exactly what I first though, but there's defi...