Rover V8

[puff]

from what i see in datasheets there should be no problems in connecting all these chips.
there definitely is a market (altho not huge) for such stuff on lcds, but in this case we've got an lcd, and i need standard needle gauges - they are much easier to read..

[puff]

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small update. crank sensor and my old-style needle tacho seem to be working just fine.
Got the large enclosure and connectors.
These will be installed under the hood.

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Kind of too many connectors on a single wall. Could put the large one on the longer wall, but that would make it harder to remove the board from the enclosure in case I need to check something on the bottom of it.

[kb1gtt]

Looks like lots of vertical height, you could zig zag them on that one end to keep good spacing from each connector, such that you could get your fingers around the connectors.

[puff]

Sure, but that's not an issue. Besides, I can first solder the wires, before I install connectors, and then solder them to the board.
So, it is more like aesthetics issue.
It's a pity my drill press is far away and I have no proper drill bits with me. So, this will probably happen next spring
Meanwhile, I am thinking of building some fixture or a rack to hold the board. There are couple of handy slots on the walls for that purpose...

[puff]

still need suggestions for pins/frankenstein pads for idle stepper control and 4 channels for ignition.

I'd probably order those msop tc4427 chips for high-side output from aliexpress and use pe8,10,12,14 for ignition control (with proper pads on frankenstein). (couln't find any alternative in the same package)

what about stepper control? some pads next to lcd?
here's my current pins output:

Code: Select all

2017-01-05 18_24: EngineState: pin PA0: adc input
2017-01-05 18_24: EngineState: pin PA4: adc input
2017-01-05 18_24: EngineState: pin PA5: trigger#2
2017-01-05 18_24: EngineState: pin PA6: adc input
2017-01-05 18_24: EngineState: pin PA7: adc input
2017-01-05 18_24: EngineState: pin PB3: SPI clock
2017-01-05 18_24: EngineState: pin PB4: SPI master in 
2017-01-05 18_24: EngineState: pin PB5: SPI master out
2017-01-05 18_24: EngineState: pin PB6: CAN TX
2017-01-05 18_24: EngineState: pin PB11: lcd DB6
2017-01-05 18_24: EngineState: pin PB12: CAN RX
2017-01-05 18_24: EngineState: pin PB13: lcd DB7
2017-01-05 18_24: EngineState: pin PC4: adc input
2017-01-05 18_24: EngineState: pin PC6: trigger#1
2017-01-05 18_24: EngineState: pin PC13: i4
2017-01-05 18_24: EngineState: pin PC14: i1
2017-01-05 18_24: EngineState: pin PC15: i2
2017-01-05 18_24: EngineState: pin PD1: trg emulator ch1
2017-01-05 18_24: EngineState: pin PD2: trg emulator ch2
2017-01-05 18_24: EngineState: pin PD4: spi CS5
2017-01-05 18_24: EngineState: pin PD8: joy center
2017-01-05 18_24: EngineState: pin PD10: joy A
2017-01-05 18_24: EngineState: pin PD11: joy D
2017-01-05 18_24: EngineState: pin PD12: led: running status
2017-01-05 18_24: EngineState: pin PD13: led: warning status
2017-01-05 18_24: EngineState: pin PD14: led: ERROR status
2017-01-05 18_24: EngineState: pin PD15: led: comm status
2017-01-05 18_24: EngineState: pin PE2: i7
2017-01-05 18_24: EngineState: pin PE3: i8
2017-01-05 18_24: EngineState: pin PE4: i5
2017-01-05 18_24: EngineState: pin PE5: i6
2017-01-05 18_24: EngineState: pin PE6: i3
2017-01-05 18_24: EngineState: pin PE8: c1
2017-01-05 18_24: EngineState: pin PE9: lcd RS
2017-01-05 18_24: EngineState: pin PE10: c2
2017-01-05 18_24: EngineState: pin PE11: lcd E
2017-01-05 18_24: EngineState: pin PE12: c3
2017-01-05 18_24: EngineState: pin PE13: lcd DB4
2017-01-05 18_24: EngineState: pin PE14: c4
2017-01-05 18_24: EngineState: pin PE15: lcd DB5
2017-01-05 18_24: EngineState: Total pins count: 40

like pb10, pb14, pb15?

speaking about tc4427.

Снимок экрана 2017-01-05 в 23.58.57.png (86.21 KiB) Viewed 5989 times

how does it behave when the input is grounded and when there's 2.7v there? what are the outputs with 5V supply then?

I couldn't find pin #1 of P602 on frankenstein.
What's the purpose for R601 & R604 there? Don't we need to pull the output down, replacing LD601 with a resistor?

[AndreyB]

still need suggestions for pins/frankenstein pads for idle stepper control and 4 channels for ignition.

I'd probably order those msop tc4427

msop? I want to say we are using the larger soic do not we?

Do not remember which pins we have available on Frankenstein, it's an old board and I've forgotten most of that. Not even sure if enough pins are exposed if you have an LCD and stepper at the same time.

[puff]

yep. that's the old board. I sourced soic-packaged chips as per initial BOM, and I got disappointed - they were too large and didn't fit onto the board
Probably, I can use them in some other projects

It seems, there are still some pads left unpopulated on frankenstein.But the silkscreen is often unreadable, which makes it a bit difficult to get through. And it takes too much effort to master kikad apps - in eagle it's pretty simple to see the whole signal, but I don't know how to do that in pcbnew...

[kb1gtt]

In pcbnew on the right, you have layers, with check marks. You can turn off copper layers, back pads, silk layers etc.