KaupoiMOD PCB v3

[krzycho12316]

Send a diagram what changes would I plan and where to place?
in general, I worked on the board in eda, but I have little knowledge about designing an already finished board due to the fact that we have a GND cast on the entire board.

Below is the KaupoiMOD V3.0.1.b motherboard with bno080.
It gives positive results.
Within a week, I will send it folded on qwiic connectors.

PS.
Why don’t you use JST connectors?
Because the crimper for them is expensive.
I bought ready-made tips and there is a problem with them.
The cables to the jst connectors are thin and in my opinion the signal losses are too high.

[Stabilo]

krzycho12316:
Do you have the code order for Batt +12/GND and Out +12V/Gnd connector ?

JST connector can be assembled with soldering.

[Kaupoi]

I haven’t had any issues with jst connectors. I bought the crimper for jst xh connectors from aliexpress. Paid about 20€ for it. Mostly I’m using ready made wires though.

[SK21]

Wouldn’t you need a logic level convertor for 3.3V I2C? https://www.universal-solder.ca/product/3-x-logic-level-converter-4-channel-3-3v-5v-bi-directional-i2c-isp-icsp/

I agree a qwiic connector would be useful. Have a 4 pin header and use these: https://www.mouser.ca/ProductDetail/SparkFun/PRT-14425?qs=%2Fha2pyFadugCJeYbHA%2FF%2FIwcj2cWicueHJI%252BS8P1NuCiduz76BmArQ==

You could plug right in to any/multiple qwiic-enabled devices.

[SK21]

A couple of interesting ones are:
An I2C extender

BOB-14589 SparkFun | Mouser

An I2C relay

COM-15093 SparkFun | Mouser

[krzycho12316]

here are the numbers of these connectors

EDV-5.08-02P-4

XY2500V-C-02P

I just ordered this cable about which you write. Maybe I’ll have him at home tomorrow.
Then I’ll take pictures of what it looks like.

As for the level of logic voltages, BNO080 works without any problems with AOG.
The BNO055 bluedot has voltage-pull transistors.

I know that this is not the topic, but how do you solve the problem of manual steering and the disconnection of automatic steering.
I have two ways to solve this found on the forum.
according to this photo and according to this post.

Autosteer disengagement (torque measurement)

Hi, I wanted to be able to disengage Autosteer when holding the steering wheel with my hand. Same principle as TRIMBLE EZ-Pilot per example. To achieve that, I calculate the power needed by the motor by multiplying Volts and Amps. If it exceeds an adjustable limit, it disengages autosteer. Basically, to engage you press on the button, to disengage you can either press on the button again or hold the steering wheel. I plan to replace the motor with rubber wheel by a gear fitted under the mo…

Personally, I would replace the relay with a relay Pololu - Big MOSFET Slide Switch with Reverse Voltage Protection, MP

I think to implement it in PCB as well.

[SK21]

I use the second method, with a relay disconnecting the Cytron when steering is disabled in the ino sketch. I use a foot switch to disable steering.

[baraki]

Jerking with the steering wheel breaking out of my hands in order to raise the steering current does not seem to be a comfortable solution. I’d rather press a button.
It would be a good idea to have sensors that disconnect the AS before your hands hit the steering wheel.

Czujniki gestów i ruchów - Botland - Sklep dla robotyków

Regarding the Pololu mosfet, I use these switches for solenoid valves, but if I’m not mistaken, they will not disconnect the reverse current from the engine.

[F380]

@SK21 I saw there are a lot of discussions in some topics concerning the cable length of the I2C.
I can say that I am using a 5-7 meter CAT7 cable for my MMA and BNO.
Seems to work nice, getting some stable signals.

Regards

[Stabilo]

If i need to mount the pcb in vertical position, which orientation the mma and bno should be ?

This is a picture from a wiki

BNO055 have a self calibrating function. So i think can be mounted in any orientation ?

Only MMA have the orientation problem ?

[Stabilo]

You can make a motor steering version with this mod :

Remove:

Remote ( OK3, R3 , R5)

+15 from STEER and IMP

D2 +5V GND (C1)

D5 +5V GND

AUX A/D (R16 , R17 , C5 , C6)

Reset pin

A3 A2 A1 A0 5V GND pins

+3v3 GND

Fuse IMP and STEER in one 4 pin connector

Move OK1 and OK2 between arduino nano rail.

Move MMA in the OK2 position.
Move Motor/valve in OK1 position.

With this mod you can make a 80 mm x 100 mm board.

[Larsvest]

Maybe with the new info about bno080/85 or cmps 14, you could take away mma.

[Stabilo]

In the empty space you can add an hs8836a usb controller.
And for the panel connector you can use PXP4043.

So you can install ardusimple rtk2b in the same enclosure, with one usb panel connector.

[smitter]

@Kaupoi How do you mount your WAS to your tractor?
I saw you suggest a RTY090LVEAX, I’m a bit lost on how to do that. Would it be possible for you to share a picture of the actual mounting and mechanical connection of the WAS?
Thank you!

[Kaupoi]

Here’s few links to my photos:

WAS with Ackermann steering

Here’s WAS rod connected to center of the track rod of Sampo combine. Works good. [IMG_0641]

WAS with Ackermann steering

Mounting WAS this way eliminates Ackerman. [WAS_install kopio] A bit bad drawing but hope it helps.

WAS on John Deere 6x30 7x30

Here’s 6920S… [20181214_134004 (Medium)] …and 6630. [20190417_094750]

[Vili]

This is correct wiring for BNO08x?

Remove MMA and BNO055, 3.3V (PCB) to VCC (BNO08x)?

For CMPS14

can connect directly or use two PCA9615 and ethernet cable?

In PCA9615 3.3v(PCB) to VDDA?

Thx.

[Jhmach]

Which wires do you jumper to bypass having to use relay ?

[Kaupoi]

[diegocesaretti]

im having an issue, the was stopped geting a signal, the gnd and 5v pins seem to be powered correctly, the ads1115 works fine but theres no signal coming from the was, what could be the problem?

[Gianfranco]

Have you checked if voltage arrives at the WAS and if there is voltage at the pin signal? Something like this happened to me when I had mounted temporary pins before mounting the suitable connector for the Delphi sensor