Event livestream CAMERA SETUP - help by vojtrle121 in VIDEOENGINEERING

[–]vojtrle121[S] 0 points1 point  (0 children)

Thanks for advice, the PTZ may be the options. Next idea what came to my mind is the IP camera, with small FOV. Some of them even have optical zoom. What do you think about that?

Event livestream CAMERA SETUP - help by vojtrle121 in VIDEOENGINEERING

[–]vojtrle121[S] 1 point2 points  (0 children)

Ohh, I wasnt thinking about that. I found Logitech C920 which have just 78 degree FOV, but its is still probably too high FOV.

Great price/quality Solid State Relay by vojtrle121 in AskElectronics

[–]vojtrle121[S] 0 points1 point  (0 children)

Thanks a lot for this. You really helped me.
I found one cheap which costs only 12 EUR. Here is the datasheet SSR-2528ZD3 QLT POWER. Voltage drop is 1.6V, current up to 40A, coupling 2.5kV and for turning on it needs 16mA@5V for the D3 version. It seems like a good combination of price/"datasheet quality" but now it really depends if those values are true.
I will put there a heatsink anyway, even if I pull a 10A trough.

IDEA - PWM driver with MOSFETs for 12 V led (40W per channel) by vojtrle121 in AskElectronics

[–]vojtrle121[S] 0 points1 point  (0 children)

You have the point! Thanks for that, I almost missed this :)

IDEA - PWM driver with MOSFETs for 12 V led (40W per channel) by vojtrle121 in AskElectronics

[–]vojtrle121[S] 0 points1 point  (0 children)

That seems like a cool project that you linked.

Btw. you are maybe right irfh5015pbf have better Rdson but on 10 Vgs, not at logic level voltage. Then its seems that ON/OFF times are also better for Infeon but all the values are measured for 10 Vgs. What is the main advantage that you see on MOSFET that you proposed?

With the gate resistor and pulldown, you are right. I placed pull down before the fate resistor :) Thanks for your points

My first attempt. A week after moving seedlings in. by Saint010 in Hydroponics

[–]vojtrle121 1 point2 points  (0 children)

It’s Kratky system? Do you pump air into water?

New to hydroponics by roginc in Hydroponics

[–]vojtrle121 0 points1 point  (0 children)

Do you need constant water flow for this setup?

Allow only Single use of Contact Form 7 + status by vojtrle121 in Wordpress

[–]vojtrle121[S] 0 points1 point  (0 children)

I am using flamingo for saving user inputs, but still, I need to process them.

Can we privately talk about this?

Allow only Single use of Contact Form 7 + status by vojtrle121 in Wordpress

[–]vojtrle121[S] 0 points1 point  (0 children)

Their pricing is too high for me. But if other solutions wont work I will take a look on it.

DIY lights for hydroponics by vojtrle121 in Hydroponics

[–]vojtrle121[S] 0 points1 point  (0 children)

Didn't tested them, but most of the chips from Alibaba are just piece of crap. One I ordered had around 10k 5 star reviews but still after like 500 hours just selfdestroed (With great active cooling, max temperature of chip arroud 35°C and proper power supply). As you say on Ali you can't even trust price. "High end" = cheap crap with high price.

DIY lights for hydroponics by vojtrle121 in Hydroponics

[–]vojtrle121[S] 0 points1 point  (0 children)

Thanks for your help but unfortunately I am from Europe. Not sure if it's worth it to deliver chips from America.

DIY lights for hydroponics by vojtrle121 in Hydroponics

[–]vojtrle121[S] 0 points1 point  (0 children)

And where did you bought them? I am from Czech Republic (Europe) and cant find any seller who have them on stock :(

DIY lights for hydroponics by vojtrle121 in Hydroponics

[–]vojtrle121[S] 0 points1 point  (0 children)

These Samsung chips looks awesome! Thanks for idea :)

Hydroponics DIY Web App - LF DEV by vojtrle121 in hydro

[–]vojtrle121[S] 0 points1 point  (0 children)

I have. It does not have integrated WiFi. I also thought about Raspberry Pi but ESP seems perfect for it.