For example:
central front sensor is on => stop
central front sensor is off => move
left front sensor is on => turn right
right front sensor is on => turn left

That simple 4-block program was enough to make Thymio move forward and avoid obstacles. This is no longer the case. Now the program functions in the edge-triggered mode - the event fires ONLY if there was a change. So now after avoiding the obstacle Tymio keeps circling because "central front sensor is on" condition is not checked unless the central front sensor changed its state.

I would say that this belongs to advanced or even advanced+ mode. For 5-year old child this concept is hard to grasp.

How can I switch the Thymio into the level-triggered mode?

We need to set this command :
Thymio go foward fot 10 second than turn left and than go foward for 5 second

How we can write it with blockly ?

So if there is a wall in front of him, he turns 90-degree to the right. If there is still a wall in front of him, he's turning 180-degree to left (or right) and move forward. If there is no wall after a his first 90-degree turn, then he moves forwards.

So there is no chance of going in the direction he came from.

My code from the Blockly looks like this:

onevent button.forward
when button.forward == 1 do
call leds.top(6,32,6)
motor.left.target = 100
motor.right.target = 100
end

onevent prox
when prox.horizontal[2] > 2000 do
call leds.top(32,0,0)
timer.period[0] = 800
motor.left.target = 300
motor.right.target = -300
end

onevent timer0
call leds.top(26,6,26)
if (prox.horizontal[2] > 2000 or prox.horizontal[3] > 2000) or prox.horizontal[1] > 2000 then
timer.period[1] = 1300
motor.left.target = -300
motor.right.target = 300
else
motor.left.target = 100
motor.right.target = 100
end

onevent timer1
call leds.top(32,19,0)
motor.left.target = 100
motor.right.target = 100

Can anyone help me please?

An alpha version of Thymio VPL Mobile Preview is available for testing:
https://play.google.com/apps/testing/org.mobsya.thymiovpl2

If you own an Android tablet or phone, you can try this app. It is open-source under LGPL v.3, please see https://github.com/aseba-community/thymio-vpl2/ for more details.

This is a developer preview. Please report bugs and requests at https://github.com/aseba-community/thymio-vpl2/issues. Features are constantly changing without notice. Similarly, the data format will likely be changed and saved programs will be lost. Do not base any serious work on this app yet!

You need a Thymio robot and an USB On-The-Go adapter to use this app. Connect the USB dongle (if wireless Thymio) or the USB cable (wired Thymio) to the OTG adapter, and plug the latter into your mobile device. Then start the app. When requested for permission to use the USB device, allow usage.

You can follow the development here: https://twitter.com/MagnenatS

Enjoy VPL on the move!

Stéphane

What do you suggest?

Thank you very much.

I'm trying to find out how I can set a state into the blockly.

In text writing is it for example like that:

when button.forward == 1 do
new_state [0] = 1
new_state [1] = 0
new_state [2] = 0
new_state [4] = 0
end

But i don't find the same thing in the blockly.

Do i have to work with variables?

Thanks for your reply.

Any ideas how to solve it?

Thanks in ahead

Solvejg

When I put one action in a block, there is no possibility for adding further actions in that block. I.e. there is no automatic adding of a place for one more action, and so on.

What to do so that automatically a place for an additional action occurs within one block, after I fill previous place for action?

Thank you in advance!

Thanks in advance

It would be the same as the demo you see in the video about the bot?

I've seen it mentioned both in the forums:

(https://aseba.wikidot.com/forum/t-1038031/vpl-threshold-slider-for-sensors)

- and outlined briefly in the research paper (Visual Programming Language for Thymio II Robot)

(http://stephane.magnenat.net/publications/Visual%20Programming%20Language%20for%20Thymio%20II%20Robot%20-%20IDC%20-%202014.pdf)

I fully appreciate that the intention is to have as few bugs as possible in the official release version - and that the developers are undoubtedly limited by testing and coding resources.

However, now that there is a growing community of Thymio users it might perhaps be useful to move to a model where there is an official and (official) beta release - so that the beta users (who are likely to have more Thymio experience) could be doing some of the testing and bug reporting.

Of course the reason I am asking is that I have a personal interest!

1. I'm in the process of adding examples to the wiki, (e.g. https://aseba.wikidot.com/en:thymiorotorvpl, https://aseba.wikidot.com/en:thymiochristmasdoodle). I am particularly interested in creating VPL based materials for Primary school children (5-11yrs) and their teachers. Any examples with VPL code, in screenshot images, will need revising to keep up to date with VPL changes. I think that keeping these examples up to date is particularly important as they are intended to be used by less experienced Thymio users - to help them build understanding and confidence. Broken examples are likely to discourage them as they will not easily know how to work around. They will not be able to tell the difference between broken code and broken understanding on their part.
2. I'm teaching Primary teachers to use Thymio - initially with a focus on VPL. The event / action based architecture (with state setting) is hard for them to get to grips with (since their coding experience is limited to sequential models). VPL changes may undermine their confidence. For people who are outside of their comfort zone even cosmetic changes to interfaces can be unsettling. (Also, if there is a obviously simplifying feature such as easily linking multiple actions to a single event then I'd like to have it now!)

Thymio is an excellent learning platform and I think it is wonderful that it is gaining traction and that there is a growing community of users.

However it may be useful to look at the project priorities.

Keeping the users informed about the roadmap may become more important as the mainstream audience grows. This is particularly true for education users where committing to use a learning platform is a significant investment of time and energy - and changes (even good ones!) can be unsettling and potentially disruptive.

I hope this post explains why I'm asking the question. I understand the challenges in getting software from beta to release - but even knowing a target release date would be useful. To help users to plan.

My 6years old son and I are playing with Thymio. (I studied two years of engineering, mostly programming). With the VPL we already do the basic follow orders, light up colors, and so on.

However, there is something important I cannot get the VPL software to do. To me one of the most important concepts about programming is the efficiency that comes with algorithms. It requires getting bored with asking a machine to follow a long list of orders. For example Lego's Mindstorm can be programmed visually to move forward 3 steps, then right 45 degrees, then forward 10 steps, and so on. Once the person has provided several orders as to achieve a mission, then they can develop natural skills to make those procedures more efficient like using sensors and state variables.

The point is that it will be great if VPL can allow for example a sequence of orders. Say to get to the kitchen from the living room Thymio needs to move forward 2 meters, then turn right 90degrees, and then move forward 1 meter.

Is that possible? Bear in mind this is a 6y.o. so he is only starting to read. Thank you for any help.

Regards,

Tito

Secondly: There should be a way to interrupt the connected roboter from what its doing in programming modes.