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by nextguy
Thu Sep 26, 2019 12:09 am
Forum: Troubleshooting
Topic: Trying to get HP L5009tm (Elo Touchsystem) touchscreen to work with RPi3B+
Replies: 1
Views: 127

Trying to get HP L5009tm (Elo Touchsystem) touchscreen to work with RPi3B+

Hi all, I have an HP L5009tm touchscreen monitor connected to my RPi 3B+ running 2019-07-10-raspbian-buster. The product is found here: https://support.hp.com/ca-en/product/hp-compaq-l5009tm-15-inch-lcd-touchscreen-monitor/4031734 The monitor has a VGA connection which I've connected to my Pi via a ...
by nextguy
Tue Sep 10, 2019 11:54 pm
Forum: Beginners
Topic: Connecting whilte LED strip to Pi
Replies: 14
Views: 875

Re: Connecting whilte LED strip to Pi

I decided to give the amplifier a try and amazingly (for me at least) everything works! I am using the amplifier to drive 4 short strips. If I knew how to use fritzing I would upload the schematic. But basically, I made these connections from the Pi to the amplifier: GPIO - Amplifier Input 4 - CH1 2...
by nextguy
Mon Sep 09, 2019 5:44 pm
Forum: Beginners
Topic: Connecting whilte LED strip to Pi
Replies: 14
Views: 875

Re: Connecting whilte LED strip to Pi

That amplifier seems expensive to me, at $14, compared to the FETs at $2.3 each. I found an amplifier with 4 channels like this one: https://www.amazon.ca/gp/product/B07F78TKCY/ref=crt_ewc_title_srh_4?ie=UTF8&psc=1&smid=AOH9V8W2LW1AN It is very cheap also at 9.26 Canadian Dollars. I believe I shoul...
by nextguy
Mon Sep 09, 2019 3:49 pm
Forum: Beginners
Topic: Connecting whilte LED strip to Pi
Replies: 14
Views: 875

Re: Connecting whilte LED strip to Pi

For a short length, the MOSFET is more appropriate. You don't need the power handling capability of that amplifier. And you must match your supply voltage to what the strip requires. Yours is a 12V strip, it will not work well from the Pi's 5V supply. You should calculate the maximum current requir...
by nextguy
Mon Sep 09, 2019 12:34 pm
Forum: Beginners
Topic: Connecting whilte LED strip to Pi
Replies: 14
Views: 875

Re: Connecting whilte LED strip to Pi

Sorry just another question. I came across this article: https://www.instructables.com/id/Easiest-RGB-LED-Strip-With-Raspberry-Pi/ It suggests to purchase an RGB Signal Amplifier instead of using transistors: https://www.amazon.com/TSSS-Repeater-Signal-Amplifier-warranty/dp/B00A46UAQO From his pictu...
by nextguy
Mon Sep 09, 2019 11:36 am
Forum: Beginners
Topic: Connecting whilte LED strip to Pi
Replies: 14
Views: 875

Re: Connecting whilte LED strip to Pi

Not quite! He has (red, green, & blue) wires connecting the GPIOs to the gates. His black wires connect the GND of the Pi, the sources of the FETs and the negative of the external power source. The drains of the FETs go to the LED strip negatives, with their positives connected to external power so...
by nextguy
Mon Sep 09, 2019 9:54 am
Forum: Beginners
Topic: Connecting whilte LED strip to Pi
Replies: 14
Views: 875

Re: Connecting whilte LED strip to Pi

No, that sounds destructively wrong. Put "Pi driving LED strip" in your favourite search engine, read two or three results, and ask again if you still don't understand (no shame in that). Don't rely on any one website because there is some wrong information out there ... if you tell us what you fin...
by nextguy
Mon Sep 09, 2019 1:29 am
Forum: Beginners
Topic: Connecting whilte LED strip to Pi
Replies: 14
Views: 875

Connecting whilte LED strip to Pi

Hi all, I am trying to connect 4 x single color light strips to my Pi. The light strip I purchased was this one: https://www.amazon.ca/gp/product/B005EHHLD8/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1 I am going to cut 4 x 8" strips from this roll. An 8" strip is like 11 individual LED's. The l...
by nextguy
Fri Sep 06, 2019 9:02 pm
Forum: HATs and other add-ons
Topic: Question about CZH-Labs Pi Screw Terminal Block
Replies: 7
Views: 811

Re: Question about CZH-Labs Pi Screw Terminal Block

Well some thing is wrong if you got 0V from the 5V terminal and only 1.5V from the 3.3V terminal. Are you sure you had the meter set correctly ? If you post a picture of the meter showing how it was set and the leads connected to it we can check for you. OMG I'm such an idiot. I just realized that ...
by nextguy
Fri Sep 06, 2019 8:39 pm
Forum: HATs and other add-ons
Topic: Question about CZH-Labs Pi Screw Terminal Block
Replies: 7
Views: 811

Re: Question about CZH-Labs Pi Screw Terminal Block

I did a bit more testing, as suggested I connected the sensor to directly to the GPIO 3.3v and it worked fine so I will do that going forward. I've also done the voltmeter test but I'm not sure if I did it right. I attached the HAT and then set my multimeter to 20v. I then touched the leads to the H...
by nextguy
Fri Sep 06, 2019 4:42 pm
Forum: HATs and other add-ons
Topic: Question about CZH-Labs Pi Screw Terminal Block
Replies: 7
Views: 811

Re: Question about CZH-Labs Pi Screw Terminal Block

Taken a quick look at your sensor linked page, if you power it from 5V then it will output 5V on the D0 pin , so you should not connect this to the pi gpio without a potential divider circuit. Hmmm ok. Some tutorials I looked said to connect the sensor to 5V. And doing so directly instead of throug...
by nextguy
Fri Sep 06, 2019 4:23 pm
Forum: HATs and other add-ons
Topic: Question about CZH-Labs Pi Screw Terminal Block
Replies: 7
Views: 811

Re: Question about CZH-Labs Pi Screw Terminal Block

And your second link only shows plastic bolts,nuts That's strange. On my computer it is a link to the Terminal Block like in my attachment. I am really a newbie with electronics. It took me a while to figure out how to check the continuity between the pins and the blocks. I will need to read up on ...
by nextguy
Fri Sep 06, 2019 3:30 pm
Forum: HATs and other add-ons
Topic: Question about CZH-Labs Pi Screw Terminal Block
Replies: 7
Views: 811

Question about CZH-Labs Pi Screw Terminal Block

Hi all, I am very new to Pi. I purchased a 3B+ and I am trying to connect a few SW-420 vibration sensors like this one: https://www.elecrow.com/vibration-sensor-module-sw420-p-525.html When I connect them directly to the pins on the Pi the sensors light up and I'm able to connect and read their inpu...
by nextguy
Wed Aug 14, 2019 12:34 am
Forum: Beginners
Topic: Need help with a project - synchronized targets with hit detection
Replies: 15
Views: 874

Re: Need help with a project - synchronized targets with hit detection

I think you are waiting for someone to design the complete circuit for you... No that's not what I want at all. I was just asking if I was choosing the right parts and to help understand how the wiring would work. My last post about the nature and function of my project was only in response to your...
by nextguy
Tue Aug 13, 2019 2:46 am
Forum: Beginners
Topic: Need help with a project - synchronized targets with hit detection
Replies: 15
Views: 874

Re: Need help with a project - synchronized targets with hit detection

Give your ball game some interest... My application is more for athletic training than for amusement. I want the targets to light up only after the previous target has been hit. And only the lit target is scored. I imagine having a display that shows the time it takes between target lighting to tar...
by nextguy
Mon Aug 12, 2019 9:34 pm
Forum: Beginners
Topic: Need help with a project - synchronized targets with hit detection
Replies: 15
Views: 874

Re: Need help with a project - synchronized targets with hit detection

Oh that terminal block looks cool. I didn't know it existed.

Thanks!
by nextguy
Mon Aug 12, 2019 10:16 am
Forum: Beginners
Topic: Need help with a project - synchronized targets with hit detection
Replies: 15
Views: 874

Re: Need help with a project - synchronized targets with hit detection

Ok I get it now!

Sorry one more question. What is the easiest/cheapest way to connect the sensors to the 3.3v and GND pin? There are going to be 4 sensors so do I need to use like a breadboard or something?

Thank you so much!
by nextguy
Sun Aug 11, 2019 10:25 pm
Forum: Beginners
Topic: Need help with a project - synchronized targets with hit detection
Replies: 15
Views: 874

Re: Need help with a project - synchronized targets with hit detection

So this is the SW420 that I was looking at: https://www.elecrow.com/vibration-sensor-module-sw420-p-525.html The specs say that it needs an input voltage of 3.3-5V which I guess means I can use these with an RPi directly without extra circuitry? Also, I'm confused about which GPIO pins I should be c...
by nextguy
Sun Aug 11, 2019 12:05 pm
Forum: Beginners
Topic: Need help with a project - synchronized targets with hit detection
Replies: 15
Views: 874

Re: Need help with a project - synchronized targets with hit detection

Brilliant thank you so much for your help. Although I understood maybe only 70% of what you wrote, it is a very solid start for my project. I was doing more research since my original post and thought that maybe I would have to put an Arduino board between the sensors and the Pi. So it sounds like i...
by nextguy
Sun Aug 11, 2019 10:39 am
Forum: Beginners
Topic: Need help with a project - synchronized targets with hit detection
Replies: 15
Views: 874

Need help with a project - synchronized targets with hit detection

Hi all, My apologies if this project has already been discussed but I've been looking for a solution for a few days and have found none. I am very new to RPi and currently own one that I use exclusively for Pi-hole. i have no experience working with sensors. The project that I want to build seems ea...

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