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by dq36g
Sat Jul 13, 2019 5:01 am
Forum: Automation, sensing and robotics
Topic: LED doesn't turn off with relay, always on
Replies: 5
Views: 255

Re: LED doesn't turn off with relay, always on

ok lets try first the relay without the RPi for this "experiment" we will need a 3.3v breadboard power supply, and a breadboard. connect the Vcc to +3.3v connect the GND to GND dont connect anything to the output yet. power on the breadboard power supply get another GND wire and touch either IN1 or...
by dq36g
Fri Jul 12, 2019 11:04 pm
Forum: Automation, sensing and robotics
Topic: LED doesn't turn off with relay, always on
Replies: 5
Views: 255

Re: LED doesn't turn off with relay, always on

its always "ON" because you connected it to the NC or "normally closed" contact of the relay (normally closed means if no power there is connection) get it? now try changing connection to NO or "normally open" and see what happens..... Ah, I see what you're saying, thanks for the info. I've tried d...
by dq36g
Fri Jul 12, 2019 9:34 pm
Forum: Automation, sensing and robotics
Topic: LED doesn't turn off with relay, always on
Replies: 5
Views: 255

LED doesn't turn off with relay, always on

Hey guys, I've got this wiring setup: https://i.imgur.com/rdm0ykY.png [Note: the yellow part circled is a 3V rail] For reference, here (https://i.imgur.com/mJj3U5Q.png) is my setup mapped to the relay. This (https://www.amazon.ca/gp/product/B00E0NTPP4/) is my relay. The reviews say it works with Pi/...
by dq36g
Wed Jul 10, 2019 5:55 pm
Forum: Automation, sensing and robotics
Topic: Using Adafruit's Peristaltic Liquid Pump with the Pi
Replies: 9
Views: 435

Re: Using Adafruit's Peristaltic Liquid Pump with the Pi

If its going to click on and off a few times a day I would suggest a relay (https://www.amazon.com/JBtek-Channel-Module-Arduino-Raspberry/dp/B00KTEN3TM?ref_=fsclp_pl_dp_1) If its click on off a lot maybe look into a solid state relay, or a home designed circuit with a MOSFET to save some money. Thi...
by dq36g
Wed Jul 10, 2019 5:28 am
Forum: Automation, sensing and robotics
Topic: Using Adafruit's Peristaltic Liquid Pump with the Pi
Replies: 9
Views: 435

Using Adafruit's Peristaltic Liquid Pump with the Pi

Hey guys, I'm a bit of a noob as far as electronics go. I'm wondering what I would need to control Adafruit's liquid pump (https://www.adafruit.com/product/1150) with the Pi 3. I know I would need a 12V power supply (I was thinking this: https://www.amazon.ca/dp/B019Q3U72M/) but I'm not sure what el...

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