Reddit mentions: The best photoelectric sensors

We found 5 Reddit comments discussing the best photoelectric sensors. We ran sentiment analysis on each of these comments to determine how redditors feel about different products. We found 2 products and ranked them based on the amount of positive reactions they received. Here are the top 20.

🎓 Reddit experts on photoelectric sensors

The comments and opinions expressed on this page are written exclusively by redditors. To provide you with the most relevant data, we sourced opinions from the most knowledgeable Reddit users based the total number of upvotes and downvotes received across comments on subreddits where photoelectric sensors are discussed. For your reference and for the sake of transparency, here are the specialists whose opinions mattered the most in our ranking.
netlohcs
Total score: 5
Number of comments: 2
Relevant subreddits: 2
a455
Total score: 2
Number of comments: 1
Relevant subreddits: 1
schorhr
Total score: 1
Number of comments: 1
Relevant subreddits: 1
TheRealBigLou
Total score: 1
Number of comments: 1
Relevant subreddits: 1
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Top Reddit comments about Photoelectric Sensors:

u/schorhr · 1 pointr/robotics

H-Bridge (for the UNO there are also shields)

Sensors e.g. this / that though you can also get tctr5000 modules for cents elsewhere.

And note that if you are not set on a line-follower, the kit you've chosen already includes the ultrasonic distance sensor which is nie for robotic projects as well :-)

Do you have a soldering iron and multimeter? Even a cheap $4 multimeter is fine for low-current & low-voltage tasks, and makes your life easier (checking voltages, connections, resistor values...)

As for a soldering iron, even a $1 will do (if it doesn't burn down your house ;-) ) - but an adjustable temperature one will be more worthwhile. Even a $20 soldering station will do to get started if you don't want to spend $80-$100. I tried to avoid soldering for years, and it was a big mistake. It's actually easy and useful.


And another note: The 2wd and 4wd chars will not always go in a straight line. Motors don't run 100% in sync, even at the same voltage.

With a rotary encoder you can ajust the speed in software. You can use one of those IR reflective sensors modules, or a gap sensor, or even a hall sensor... example


You can also get 2wd kits example, but overall, they aren't as great of a value (and as you can see, they just include the standard modules)

A "sensor shield" like in that kit is nice though as it reduces the wiring chaos a bit :-) They cost $1 for the UNO at Aliexpress, probably more expensive at Amazon.

u/netlohcs · 1 pointr/raspberry_pi
  1. Yes - sometimes. Here is the weird thing. I have two tables that are built almost identically. The table on the far side, away from the slide is the one that is having more issues. It started with the 100 hole. It would randomly trip quite frequently, enough so that it made it not very fun to play, especially any 2 player games. When the slide is used, it just makes it worse, and other sensors are occasionally tripped.

  2. sensors do have their own channel for wiring. You can see an image of it here: https://www.reddit.com/r/cableporn/comments/5iljt5/something_a_little_different_the_underside_of_my/ I tried to make sure the sensor wires cross the LED wires at right angles if at all possible. The sensors do share a common 3.3v and ground rail.
  3. If you are referring to the power supply for the LEDs, yes its pretty massive and a bit of overkill - 100 amps @ 12v. I haven't really had any issues with the LEDs though. So if youre referring more to the sensors, all 8 of those are ran off of the 3.3v output from the raspberry pi. The sensors i'm using are these: https://www.amazon.com/gp/product/B00XT0PBC0/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
u/a455 · 2 pointsr/arduino

> might they be moving too quickly for a break beam IR or photoresistor?

A photocell will respond plenty fast. To get the Arduino to respond quickly enough use a digital photocell or obstacle detector module connected to interrupt-on-change pins, either on Arduino pins directly or via an IO expander like the PCF8575.

u/TheRealBigLou · 1 pointr/microcontrollers

I found this 10 pack of light sensors on Amazon: https://www.amazon.com/Gowoops-Digital-Intensity-Detection-Photosensitive/dp/B01N1FKS4L/ref=sr_1_3?keywords=arduino+light+sensor&qid=1565710705&s=gateway&sr=8-3

Let's say I got these and attached them to each LED on the speaker splitter. Would I be able to attach 8 of them (mute LED and 7 zone LEDs) to the same microcontroller?