I have tried this but it doesn’t for me. I have 5v relay module as soon as I connect vcc to 5v pin, ground to ground pin and in to pin 18 which is set to out both relay lights glow. Even if I change pin status of 18 to dh or dl it doesn’t control relay at all. It always glows both the lights. But if I remove and connect pin 18 then it turns on and off the relay state. I have no idea why pin 18 high and low not controlling the relay. Any idea on this? Thank you.

Great video! however, there is a simpler way to program it now with a module. This way still works though :)

Nice vid, I'm surprised you didn't use a resistor of 2 mega ohm connected between them for protection purpose. Do you know if connecting a simple piezo sensor is similar? I can't find a single resource that shows how to do this and code that detects impacts. Are you still doing these exercises after 6 years ;-)

Great tutorial ! Though I used a little different relay from your vid but it still worked perfectly with your code. Thank you so much !

can I connect it to blynk for a GUI? And saving the data in a spreadsheet? or just view the data that is provided?

great tutorial! is there a way to only turn on the sensor once every few hours instead of constant electricity stream? the electricity 24/7 on the sensor anodes and cathodes (lol i feel smart remember some terms from high school classes) is what will make them deteriorate, not the moisture of the water (well that too, but not as fast as if electrons also are running 24/7 across the poles). can raspberry turn on and off these sensors?

This did not work for me.

Very nice, I like this tutorial 👍

does it catch only input from scanner, not from other HID devices?

I'm connecting a PZEM-004T to my off grid cabin power system. This was exactly what I needed!

5 years later....an old guy in the back yells....thank you...just what I was looking for :-)

Can I use this for detecting emergency vehicle siren pls do reply..... :)

exceptionally quiet dude

Thanks for this. Ive brought the same relay however it doesnt switch from the 3v. When i drop the relay ever so slighty it then switches to on. Could this mean faulty relay, connection issue or something else? Much appreciated

Can you explain the code nicely without that laziness in your voice

Hi great video i have trouble installing the correct libaray from adafruit any links using pi 4 and pca9685 board

Hey what’s the name of the app for the code (I want to install it)

Hi, I came across this topic and want to contral a 433mhz fan. But if I'm listening i receive way to much signals. How can I filter out the right ones?

Can I get flowchart for this program

Thanks!!!!

Thanks for the video. I waas glad to see how to handle the raw data from the serial interface with Python. FYI an incandescent bulb may be a better load. Your soldering iron has a thermostatic switch that turns the power on and off depending on the temperature of the iron. So it will vary quite a bit. That's why the wattage changes from around 60w initially to much less later; probably the thermostat on the iron reached temperature and turned the current off. A dumb 60W incandescent bulb would be a bit more stable to do current and power testing.

Purping-is-this-deep-voxlouse ... Pass go-ass a billigan....

Yes, but you didn't provide a support on how to download GPIO for python 3. Very sad, this has knowledge gap for users to get the results. Please do a video how to get it. I am waiting. It has any errors.

Does this work the same on coco coir

I need a little help please! I'm sorry. but how Did he access the window that appears at 48:18 ? I have been trying to reach that but have been unsuccessful so far!

Didn't get the i2Cdetect number 69 what can i do now?

I built this exactly the same as you - the green light on the relay turns on and off at intervals but it doesn't seem to power the 12V side - is it because my relay is too cheap and doesn't work with 3.3V ?

How to do the same for i want it in display of high med and low

se puede graficar la cantidad de movimiento que lleva?

Sir ,can this sensor output as the value or range in pi better than digital value.

What do u mean by changing the jumpers? PLs explain !

How could it be working with 433MHz Rolling Code?

Hi and thanks a million for this tutorial - works perfectly! I followed the instructions on an RPI3B, runs just fine. Keep on the great work!!!!!

What Software are you using on the Raspberry

Please don't try to explain something to others if you don't know what you're doing yourself.

hello, I can't speak English. I'm using google translate. I'd like to ask. I get the message "RPi.GPIO as GPIO no module" what is the solution? I have installed but it didn't work. Please help me 🙏🙏

What happened to this? I'd love to see an update.

How do you save?

Not running on a RPi! Not running on a RPi! Not running on a RPi! Not running on a RPi! Not running on a RPi! Not running on a RPi! Not running on a RPi! Not running on a RPi! Not running on a RPi! Not running on a RPi! Not running on a RPi! Not running on a RPi!

I'm pretty sure that every example about this on KZfaq is now out-of-date and no longer works.

I followed everything but I get that it ran successfully but then the program exits and doesn't stay running?

can I avoid powering the relay via raspberry and power it with another power supply, by only letting the signal cable come out of the raspberry?

Can you use a relay to throttle a motor precisely? Say, run 30%, then 50%?

I have a similar project with arduino and everything was fine until yesterday my relay chatters whats the problem?

Can you hook up 2 of theses to 1 pi?

I need a little help please! I'm sorry. but how Did he access the window that appears at 48:18 ? I have been trying to reach that but have been unsuccessful so far!

This video and the accompanying article has caused me to have a severe case of cognitive dissonance, because the transmitter part of the circuit should not work as shown because the polarity of the current flowing between collector and emitter in the (what is claimed to be a) BC547 transistor is wrong. This video and the diagram in the article shows the +3.3 volts power being connected to the transistor's EMITTER by way of the infrared LED (and no resistor to limit the current, normally a resistor of somewhere around 220 ohms is used in circuits like this) and the negative ground being connected to the transistor's COLLECTOR - he even helpfully labels the connections on the front of the breadboard so you can see that this is how he is hooking it up. But EVERY other diagram I have found using an NPN resistor such as the BC547 or a 2N2222 shows that the positive side of the circuit must be connected to the collector, and the emitter must be connected to the negative side (ground in this case). Compare to circuits at www.raspberry-pi-geek.com/Archive/2015/10/Raspberry-Pi-IR-remote or forums.raspberrypi.com/viewtopic.php?p=2054578&hilit=transistor#p2054578 and you will see what I mean, of course it's harder to compare the circuits because the author of this video never shows a proper schematic diagram (if he had drawn one he might have noticed this issue). Any yet... and yet... he demonstrates the circuit working, though only to send one single solitary button press. So how can that be? My suspicion is that he may have THOUGHT he was using a BC547, but actually grabbed a PNP transistor instead. The circuit he shows would work if he were using a PNP transistor, see the discussion of the difference at electronicsclub.info/transistorcircuits.htm#types and then scroll down to electronicsclub.info/transistorcircuits.htm#ic which shows the difference in how the two types of transistors are wired. The circuit shown in this video makes sense if a PNP transistor is used, but he clearly identifies the transistor as a BC547. And while you can use a BC547 or the equivalent 2N2222 for this purpose, they will not work if you try to send current through them in the wrong direction. Now it is entirely possible that the author got hold of a PNP transistor that was mis-labeled as a BC547 and that they then sold those "mistake" transistors in a big bag on eBay or Amazon, and he got one and just started moving parts around until they worked. Or I suppose it is possible that every other site I found that used a BC547 or 2N2222 was wiring it wrong. Or maybe the laws of physics don't apply in his kitchen. Or maybe I have gone crazy in my old age and despite watching his video and looking at his circuit many MANY times while trying to resolve this incongruity, I am just not interpreting his circuit correctly. All I know is that according to everything else I have read, his transmitter circuit cannot work as he has it wired up if he is really using a NPN transistor such as the BC547 that he says he used. If anyone wants to to explain why I am wrong please do, because this is driving me crazy.

how can I take the values ​​thrown in the console and send them to a txt file or similar to process them later

Great help, thx!

hello, web site is dead ?