Search found 5 matches

by melofon
Wed Jul 19, 2017 3:46 am
Forum: Technical Discussion
Topic: Controlling brushed motors with PWM
Replies: 9
Views: 6858

Re: Controlling brushed motors with PWM

I would suggest using machine module in micropython - https://docs.micropython.org/en/latest/ ... l/pwm.html. Haven't had such experience yet, hope this thing works well with openMV. The plan is to test it maybe tomorrow (my robot is not ready yet).
by melofon
Mon May 15, 2017 4:36 am
Forum: General Topics
Topic: line follower using OpenMV
Replies: 9
Views: 6409

Re: line follower using OpenMV

Is it a true statement, that having FB enabled we get additional latency while new frames stay in buffer? Is there a known way to estimate time between something happened and when the picture of it can be processed in code? My idea was to use LED for this purpose, but LED itself might be having some...
by melofon
Fri May 12, 2017 3:17 am
Forum: General Topics
Topic: line follower using OpenMV
Replies: 9
Views: 6409

Re: line follower using OpenMV

Nice! Are you using OpenMV Cam M7 there on the screenshot?
I've ordered two OpenMV cameras yesterday. If we succeed to make them working they will be competing in August in Beiging and then in autumn in Russia. So fingers crossed :)
by melofon
Wed May 10, 2017 10:11 am
Forum: General Topics
Topic: line follower using OpenMV
Replies: 9
Views: 6409

Re: line follower using OpenMV

Camera with no FIFO - is what was dreamed of :) , so that's good. Loosing frames is also fine. Currently RPi velocity is not a blocker, we're just finding a center of black on an image to find out where to go, because of all we need is a position of a black line on a white field. In a case of any tr...
by melofon
Wed May 10, 2017 7:05 am
Forum: General Topics
Topic: line follower using OpenMV
Replies: 9
Views: 6409

line follower using OpenMV

My robosport team builds line following robots using video recognition on Raspberry PI 3 and we are looking for something with a smaller size and less latency time. Currently we run v1 camera for Raspberry PI at 90 fps at 64*64 or 128*128. As far as I understand there is a small additional delay cau...

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