Matrix user forums

Hi John, Just got my "Backpack" from Hobbytronics. It works well, and looks like it will make things much easier on the basic LCD front. I tried the generic i2c LCD component, but it did not work. Looking at the data with a Logic Analyser showed all the codes are wrong, being for some other display....

That was the problem.

Many thanks

Stewart

Ah !

That may well be the answer. I will try modified code tomorrow and let you know if that fixes it.

Many thanks

Stewart

Hi Benj,
The pull ups are both 1k, and the EEPROM is a 24C08WP. A0 is tied high, the other address pins low.

Looking with a logic analyser the first data read back is a NULL. Whether this is what was stored, or a misread I don't know.

Cheers
Stewart

To try and gain some understanding of I2C I have been playing with the EEPROM R/W example. I have made a few small changes to make it easier for me to understand. However, there is one issue I have yet to get to the bottom of. When reading then writing to my hardware EEPROM the contents are one loca...

Yes, I found this as well.

3rd time of happening

Stewart

Hi John,
That looks interesting, and I will be following how you get on.

It is probably an overkill for what I want to do, which is to source a simple and cheap interface to the very common
Hitachi HD44780 display interface.

Cheers
Stewart

Hi, Getting fed up using many pins and wiring to drive 2x16 LCD's so thought I might try an i2c one. I don't know what particular i2c LCD V6 FC supports. Is it a generic one that can be modified ? I have been looking at a PCB that attaches on the back of an LCD module as this seems to give a lot of ...

Hi Jonny, That example is OK now, and I see what is happening. Unfortunately, it is now getting rather confusing to me as I am used to a more defined approach. There are a lot of new processes to understand, which are unlike any I have been previously exposed to. I find that I learn best by taking s...

Wrong file format again...

Stewart

In Flowcode you can 'snapshot' the position of an object. If you store this in a 'handle' variable the snapshot will exist as long as the handle does. You can then manipulate the position (in this case by rotating by 30 degrees) and at any point write that back to the component. OK. I think :| Butt...

That would be good.

Stewart

It would be nice if the state of the Component debugging tick boxes were saved when the document was saved.

Stewart

Hi Jonny, Many thanks for the examples. I see how the linking to the target can be either direct or programmatically. Also how the axis are specified and that Z would give a rotational control. The second example was quite straightforward, however the 3rd will take me a bit of time to assimilate. Ho...

OK, that's fine now. I can see the objects in the tree structure, the linking between ButtonCtrl1 and led_5mm_clip1. Also the constituent parts of the LED. I note that clicking on the LED makes it move like a button. Tried a Pot Red Knob as a target instead. Boy that's cool ! So, the ButtonHelper li...

Hi,
Unfortunately something is wrong with the file.

When loading gave error message:-
Failed to open document.
Attribute <start> is not found

S.

OK, I see. That (3-state switch) sounds like quite a good step-by-step project to document creation of on our forums here. Hi, Yes, I think that is a good idea. The process will help me, and I suspect a number of others. I found the 'Expose full component tree in property pane' in the Component deb...

Ah ! The quickness of the video editing deceives the eye :-) Thought that I was going mad (not for the first time)... Thanks for your help on short cuts, I should now be able to make progress. I am finding information about component creation other than shape manipulation a little sparse. A few exam...

Hi Jonny, Thanks for your prompt reply and the information. The point in the video where I am stuck is at time 09.06. It maybe that I don't have a setting right, but duplicate only gives another property entry, not the additional 3 as in the video. I really want to get a much better grip on how to m...

HI Benj, To get me started on component creation I tried following your video tutorial. It was not easy, however I managed to get as far as where you use "Duplicate" for the Ev_Property and Motor Pins. When I try it all I get with duplicate is a single additional property and no extra sim entries in...

Phew !
It helps to read all of the release documentation. I only read the bits about switching off the ruler and the 3D panel ...

Thanks

Stewart

A number of useful components including toggle switches seem to have disappeared in the clear-up associated with the latest patch.

Stewart

Hi Jonny, Thanks for your prompt reply and explanation. I can fully understand how, as more functionality is added to Flowcode these sort of issues become more difficult to anticipate. Looking forward to the fix. regards Stewart B.T.W is there someone at Matrix who is conversant with using Flowcode ...

Hi,
Thanks for your reply, and looking forward to the patch.

Aren't there rather a lot of components embedded inside other components ?

Does this issue affect them all ?

regards

Stewart

Hi,
I get the following error message when compiling.

Advanced Noise Canceller_v6_3.c(946:6): error: Function 'FCD_00c10_solenoid_base1__TurnOn' already has a body

Simulation works OK.

Cheers

Stewart