Visual Countdown timer for a loop

Builder
1

If this template helps then use it. If not then just delete and start from scratch.

OS (e.g. Win10): MacOS Big Sur
PsychoPy version (e.g. 1.84.x): 2020.2.10
Standard Standalone? (y/n) If not then what?:
**What are you trying to achieve?: I have a loop that ends based on a certain amount of time passing, and would like a visual countdown timer that counts down based on the time I have set for the entire loop, not just the current routine.

**What did you try to make it work?: I have tried using a textbox stimulus that has $round(10.0 - $loop_timer, ndigits = 1) in the text area, but I got the following error:

Experiment/verbal shaping experiment copy 2_lastrun.py", line 608, in
timer.setText(round(10.0 - loop_timer, ndigits = 1))
TypeError: unsupported operand type(s) for -: ‘float’ and ‘Clock’

Experiment ended.
2

If loop_timer is the name of your clock try loop_timer.getTime()

1 Like
3

Now I get this error:

Experiment/verbal shaping experiment copy 2_lastrun.py", line 132, in
text=round(10.0 - loop_timer.getTime(), ndigits = 1),
NameError: name ‘loop_timer’ is not defined

Experiment ended.

Here is a picture of what I have included in my code component for the routine the loop acts upon.

Screen Shot 2021-03-04 at 8.58.43 AM
Screen Shot 2021-03-04 at 8.58.43 AM1584×782 78.3 KB
Screen Shot 2021-03-04 at 8.58.37 AM
Screen Shot 2021-03-04 at 8.58.37 AM1578×774 75.2 KB

4

I would define your loop timer in in EndRoutine of the last routine before the loop.

I think your first frame is running before the timer is created – hence the error.

Also, you should probable signal the end of the loop before you end the routine (since otherwise your end loop might not get executed).

5

Hi, I tried defining my loop timer in the EndRoutine of the routine right before my loop, but I still get the same error. What do you mean by signaling the end of the loop before I end the routine? The end loop is being executed because the loop and routine end at the time I have set, it’s just that the visual timer resets every time the loop resets.

6

Hi,

I was able to get this working using the code included in Michael’s post found here: https://groups.google.com/g/psychopy-users/c/tFghyXkOx5U/m/Ylt6detVKGcJ

However, when the timer runs out, the experiment simply ends, instead of continuing on to my remaining routines. Any suggestions?

7

nameOfYourLoop.finished ends the whole loop. Do you mean it’s missing other routines within the loop or after it?

8

It’s missing routines after the loop I am referring to.

9

Hello,

you are asking the same question in different threads. You might want to focus your question in one thread and start a new thread if a new question comes up so that it can be found by others.

Best wishes Jens