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by clemsy
Mon Aug 27, 2018 7:53 am
Forum: Troubleshooting
Topic: buttons and pull resistors
Replies: 5
Views: 379

Re: buttons and pull resistors

I just changed add_event_detect to FALLING instead of BOTH and it seems to be OK now? Is it right or is it just random?
by clemsy
Mon Aug 27, 2018 7:26 am
Forum: Troubleshooting
Topic: buttons and pull resistors
Replies: 5
Views: 379

Re: buttons and pull resistors

thanks for the article it is very clear :)

I understand the need of the pull up/dow resistors but still not sure of where I have to place it and wich capacity?
by clemsy
Sun Aug 26, 2018 8:36 pm
Forum: Troubleshooting
Topic: buttons and pull resistors
Replies: 5
Views: 379

Re: buttons and pull resistors

10 x dead shift registers?? bought from a far east portal at a rock bottom price?
I think yes...
by clemsy
Sun Aug 26, 2018 8:18 pm
Forum: Troubleshooting
Topic: buttons and pull resistors
Replies: 5
Views: 379

Re: buttons and pull resistors

output of the console when I only switched start / stop and it add goals when the timer goes on [email protected]:~/python/poloboard $ sudo python poloboard.py 10:00 09:59 09:58 09:57 09:56 Paused -1 09:55 09:54 09:53 09:52 09:51 09:50 Paused 09:49 -1 Paused 09:48 -1 09:47 Paused 09:46 -1 09:45 09:44 09:43
by clemsy
Sun Aug 26, 2018 7:58 pm
Forum: Troubleshooting
Topic: buttons and pull resistors
Replies: 5
Views: 379

buttons and pull resistors

Hi All I started a Score Board project for my Bike Polo club with my friend Lucas... ( intro :D ) It's written in python (really beginner with that language) I use 7 segments leds stripes for the timer/countdown and score for each team this is working quite good I control the time limit, start/pause...
by clemsy
Sun Aug 19, 2018 7:38 am
Forum: Python
Topic: Using shift registers for 7 segments led displays
Replies: 3
Views: 352

Re: Using shift registers for 7 segments led displays

Wow

It worked well as soon as I only put latch low before sending data and put hugh again after all the data is sent..
thank you :-)

What do you mean here :
#this might be a little better to convet into singal digits
Thank you :-)

Clément
by clemsy
Sat Aug 18, 2018 10:07 am
Forum: Python
Topic: Using shift registers for 7 segments led displays
Replies: 3
Views: 352

Using shift registers for 7 segments led displays

Hi all, We are building a sport scoreboard (for bikepolo) with a raspberry pi, python, leds stripes as 7 segments displays and using TPIC6B595N shift registers. It's quite OK but I don't know how to prevent that all the leds are ON for a microtime between each second... Here is a video to understand...

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