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by EZKernel
Sat Aug 17, 2019 4:45 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: solid state relay
Replies: 16
Views: 836

Re: solid state relay

combining the grounds is the way to go. been working solid a good 30 minutes now and hasn't gotten hotter than 40. definitely not 3v or 5v logic though. maybe once it heats up the internal resistance of the components increases and the voltage drop is too heavy. just a speculation based on what happ...
by EZKernel
Fri Aug 16, 2019 11:08 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: solid state relay
Replies: 16
Views: 836

Re: solid state relay

SSR 12v---------------[+ -]---- | | 3.3v control 10k / ------------===----| 2n2222a331 \ 330R | ------===------- | [b] _[/b] Common ground I will connect the ground to pi ground or should I combine the pi and 12v grounds? I got the resistance values from this calculator https://www.petervis.com/GCS...
by EZKernel
Fri Aug 16, 2019 10:12 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: solid state relay
Replies: 16
Views: 836

Re: solid state relay

after more testing i'm at a loss. I grabbed another fresh ssr and was able to trigger it with 3v3 logic - without the 2n2222... but the last time the same thing happened, I was able to trigger it without the transistors and it only worked for 15 minutes, so I assume the same thing will happen again....
by EZKernel
Fri Aug 16, 2019 9:00 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: solid state relay
Replies: 16
Views: 836

Re: solid state relay

thanks for the diagram wont this draw too much current from the 5v rail? I got it to work using your diagram with a 5k on the load side of 5v and 10k between the pi and the base, but when the pi boots up and defaults the pin to input it saturates the base and activates the SSR until I set it to outp...
by EZKernel
Fri Aug 16, 2019 9:34 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: solid state relay
Replies: 16
Views: 836

Re: solid state relay

i used the 5v rail and a resistor to drive a 2n2222 from gpio
by EZKernel
Fri Aug 16, 2019 9:18 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: solid state relay
Replies: 16
Views: 836

Re: solid state relay

must be something on my end because it switched on at 12v 1400ma

maybe a bad wire?
by EZKernel
Fri Aug 16, 2019 8:36 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: solid state relay
Replies: 16
Views: 836

Re: solid state relay

Hi, I don't care about AC mains voltage as all that stuff is locked behind a box and the house runs on it so I'm sure it works :lol: . they are ebay SSRs. I have checked the output of all the pins I used an could light up and LED with them. I have no idea what the trigger current should be at 3v3 bu...
by EZKernel
Fri Aug 16, 2019 8:13 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: solid state relay
Replies: 16
Views: 836

Re: solid state relay

what would be a safe way to check the voltage an amperage across the terminals of the SSR?
by EZKernel
Fri Aug 16, 2019 8:07 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: solid state relay
Replies: 16
Views: 836

solid state relay

Hi all, I purchased some fotek SSR25DA relays to switch an A/C load because my electromechanical ones get fried. I connected the GPIO pin via a 330 resistor to the relay + and - to pi ground. The relay was on a heatsink I made. It ran for about 15 minutes as I monitored the temp of the heatsink whic...
by EZKernel
Wed Jul 17, 2019 10:43 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Pi4B - Coach! I can't do a pull-up!?
Replies: 5
Views: 495

Re: Pi4B - Coach! I can't do a pull-up!?

thanks for your hard work dude.
wish I saw this sooner
where I had to rewrite my 400 line script I'm sure you went through a lot more of a headache.
by EZKernel
Wed Jul 17, 2019 8:37 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Pi4B - Coach! I can't do a pull-up!?
Replies: 5
Views: 495

Re: Pi4B - Coach! I can't do a pull-up!?

raspi-gpio is the tool that is provided by Pi Towers for setting up GPIO from the command line. It should be installable from apt. thank you Coach! worked like a charm You need to update WiringPi to 2.52 for it to work on a RPi 4. http://wiringpi.com/wiringpi-updated-to-2-52-for-the-raspberry-pi-4b...
by EZKernel
Wed Jul 17, 2019 7:11 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Pi4B - Coach! I can't do a pull-up!?
Replies: 5
Views: 495

Pi4B - Coach! I can't do a pull-up!?

I know BCM.GPIO doesnt work anymore but I rewrote all my stuff for wiringpi.

Do the internal pull up controls not work with anything?

Image
by EZKernel
Mon Jul 01, 2019 4:05 pm
Forum: Camera board
Topic: Fixed my zero w system lockups when using the camera
Replies: 18
Views: 5204

Re: Fixed my zero w system lockups when using the camera

Hi boys, let me tell you my story - I am having an RPi grow a whole bunch of plants for me, expensive ones right.... It controls a relay, sensors, logs data and even waters them.... I started with a pi zero w but no matter what I did when the kernel tried to communicate with the sensors during when ...
by EZKernel
Sat Jun 15, 2019 2:25 am
Forum: Camera board
Topic: Scrolling Horizontal Blur
Replies: 7
Views: 345

Re: Scrolling Horizontal Blur

thanks boys you spanked this one out for me real quick. all my lights are LED so it's not that - must be something else from mains. I'm using picamera with picamera.preview() to achieve this effect with a TV screen - it's really what impresses people the most. https://imgur.com/EVn9Czt basically, on...
by EZKernel
Fri Jun 14, 2019 1:58 am
Forum: Camera board
Topic: Scrolling Horizontal Blur
Replies: 7
Views: 345

Scrolling Horizontal Blur

Hi all, I am making a device to grow some plants and in the videos it records there is a slow scrolling horizontal black blur which is far more apparent when I do a timelapse as it is not synced up to my capture speed. Any way to remove this? I am using the 1080p 5MP camera https://www.youtube.com/w...
by EZKernel
Sun May 26, 2019 11:26 pm
Forum: Troubleshooting
Topic: DHT22/AM2302 and I/O conflicts
Replies: 3
Views: 164

Re: DHT22/AM2302 and I/O conflicts

thanks for your reply Joan, I was figuring if they were kernel level processes they would get absolute process priority and others in the forums have said that it had worked for them. I agree with you that this sensor sucks. I actually ran across your website when someone compared it to lol_dht as w...
by EZKernel
Sun May 26, 2019 9:54 pm
Forum: Troubleshooting
Topic: DHT22/AM2302 and I/O conflicts
Replies: 3
Views: 164

Re: DHT22/AM2302 and I/O conflicts

after more research I have realised the problem is occurring because the sensor requires accurate and co-ordinated timing from the CPU in order to sample the data; when the CPU is used by other processes priority is lost and out comes an incorrect reading. I have found these solutions. someone wrote...
by EZKernel
Sun May 26, 2019 2:05 am
Forum: Troubleshooting
Topic: Powering pump
Replies: 6
Views: 226

Re: Powering pump

clicky but cheap: https://www.amazon.ca/ELEGOO-Channel-Optocoupler-Arduino-Raspberry/dp/B06XCN5JNH/ref=sr_1_3?keywords=raspberry%2Bpi%2Brelay&qid=1558835989&s=gateway&sr=8-3&th=1 silent but expensive: https://www.amazon.ca/Lerway-Solid-State-Temperature-Controller/dp/B06WLNHPWK/ref=sr_1_5?keywords=s...
by EZKernel
Sat May 25, 2019 5:02 pm
Forum: Troubleshooting
Topic: DHT22/AM2302 and I/O conflicts
Replies: 3
Views: 164

DHT22/AM2302 and I/O conflicts

Hi all, sorry that I am asking for help on my first post but I thought I might as well say hi. My background is in finance, accounting and data analysis so I know very little about electrical engineering and safety, I have done an energy physics course in university and that is not saying much. I do...

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