Hi Paul,
I know that board is overkill, but I wanted to switch with mosfets in stead of a relay, given the large amount of switching it has to do. And having a fancy display, in stead of a potentiometer, is nice.
As the boards will live next to the Arduino, outside the projectors, adding a small DC powersupply is no problem.
And yes, the button on the projector (or remote) switches the internal power to activate the solinoid, I’ll measure the Voltage and let you know.
Regards, Jan.
Dissolve.
From the info: ‘Note that it is not capable of blocking 100% of light, but it looks like it blocks at least 95%. If you put a bright light behind it, you will see some light shine through!’
A 150W halogen bulb qualifies as a ‘bright light’…
And the glass isn’t completely clear, which would affect the colos of the slides.
Apart from that: see post#10
Regards, Jan.
I lived through Post #10. Melting the slides is due to the lack of heat dissipation. During presentation, you could not assume each slide would be in and out in seconds. You need a good projector, or you need fans.
To solve for "it still won't work"... put it all in a box (light-tight and push-pull fans).
The projectors are equipped with large radial fans, it blows and is noisy…
I know.
You know what is best for you. I'm out.
Hit a snag; my Arduino board requires a USB type-B connector, I can’t say when I’ve seen mine for the last time…
Regards, Jan. (who’s diggin’ through boxes with cables as we type…)
The new cable came in the mail today, so Arduino wise I’m connected.
I’m waiting for the circuitboards I ordered to arrive, so I can make the psysical connections and seen what the Arduino does.
For the solinoid switching I ordered two of these, so Arduino can push the button for me swithing to the next slide when the bulb in that projector is dark.
https://nl.aliexpress.com/item/1005006151263080.html
Regards, Jan.
With two of these (single channel version) on it’s way, a friend, who’s helping me get to grips with the parts I dont understand, has some disappointing news; it seems the software from the library is not compatible with the Arduino UNO.
He downloaded and installed the library RDBdimmer and subsequently got this error:
In file included from /home/bart/Downloads/SimplePotentiometer/SimplePotentiometer.ino:54:0:
/home/bart/Arduino/libraries/RBDdimmer/src/RBDdimmer.h:21:3: error: #error "This library only supports boards with an AVR, ESP32, ESP8266, SAMD, SAM, STM32F1/F4 processor."
#error "This library only supports boards with an AVR, ESP32, ESP8266, SAMD, SAM, STM32F1/F4 processor."
^~~~~
exit status 1
Compilation error: exit status 1
Searching for this error, he found this:
https://forum.arduino.cc/t/fatal-error-esp-intr-h-no-such-file-or-directory/1396756
"esp_intr.h is part of older v2 ESP32 board platform. The current version (for a little over a year) is v3, which no longer has this file. The library has apparently not been updated.
You can downgrade the esp32 board version: the last v2 is 2.0.17"
Has anyone found a workaround, or a solution to this issue?
Regards, Jan.
If it turns out the AC option wont work, could I rectify the 24V AC to 32V DC and use a mosfet board like this to dim the halogen bulbs?
https://nl.aliexpress.com/item/1005008518414494.html?
And, will the software allow me to power the bulb to the same light level as it has on the 24V AC?
Regards, Jan.
Jan, I'm concerned I could be wasting my time helping you because you ask for advice but don't answer questions that need to be answered in order to give you the advice you asked for, and then you go off and make uninformed decisions anyway.
But I'll try to help one more time.
Why do you say that?
I'm not familiar with that library, it's not the one we discussed using previously. Please post a link from where you downloaded it.
The Uno has an AVR processor, so apparently the library is compatible with Uno and you should not be seeing that message.
What Arduino board did you select in the IDE?
Hi Paul,
The link in post#31 is where I got the library.
The library that doesn’t seem to work is this one (as the circuitboard in question is a RoBotDyn design): RBDDimmer/examples/SimplePotentiometer/SimplePotentiometer.ino at master · RobotDynOfficial/RBDDimmer · GitHub
As I have an Arduino ONE, I select that in the IDE.
Regards, Jan.
I assume that's a translation error because there is no such board as Arduino ONE, but there is Arduino Uno.
Uno has an AVR processor, so I don't know why you got that error message. A bug in the library, I guess.
EDIT: wait... There are several models of Arduino called Uno these days, and not all of them have an AVR processor (for example Uno R4). So exactly which model do you have, and exactly which model did you select?
Unnecessary/overkill!
Did you try the library from post #31?
Hi Paul,
I got as far as this: GitHub - circuitar/Dimmer: Arduino library to control dimmable lamps and other AC loads (110V / 220V). and had no idea how to proceed from there…
Regards, Jan.
Install it and try out some of the example sketches.
Use the library manager in the IDE to install it if you can. If it's not there, search for other AC dimmer libraries in the library manager. Libraries available in the library manager are generally more popular and get tested more than those that are not. That doesn't mean that the ones in library manager are the best and all the others are bad!
