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Noob 7868

Undefined Job

Home-made humidifier diagram

Production steps:

Step 1: Required materials:

Empty baby wipes box

Aluminum foil (approximately 7.5 by 5 inches, 19 by 12.7 cm)

20 ounces (about 560 ml) bottled water bottle

80mm computer cooling fan, including mounting screws

Single pole double throw switch (actually any switch is fine)

9V AC/DC power converter

Power adapter

Humidification filter

A short piece of wire (about 6 inches, a little more than 15 cm long)

 

 

Step 2: Tools needed:

Electric grinder with glass fiber reinforced cutting wheel

Wireless handheld drill

1/4 inch drill bit

5/32 inch drill bit

Files for Jewelry

Iron scissors

Hot melt glue gun

Electric screwdriver

Electric soldering iron

Scissors

 

Step 3: Assembly steps: spread out the container, trim the upper cover, and install the bottle.

 

Step 4: Connect the electronic parts, the final product

 

Step 5: We will use a used baby wet tissue box as a container. The upper part of the box is rounded, making it difficult to put things on it. Rather than completely removing the upper structure, we might as well modify it so that it can fix other things and facilitate the handling of the internal space, including cleaning and filter replacement.

 

Step 6: Use the cutting wheel of the electric grinder to make a 6.25 by 4.5 inch (about 15.9 cm by 11. cm) space on the top of the box, leave about 1/4 inch (6.35 mm) on the side not to cut, so that Can reserve the clamshell roller space of the box cover.

 

Step 7: Next, we need to drill two 1/4 inch small holes in the front of the box cover, which are in the area where the switch button of the box cover is located. After modification, it will be used to install the upper plate structure and be able to fix it.

 

Step 8:

On the left side of the box, we need to make a ventilation structure to extract air through a filter element that absorbs water vapor. This design is aimed at installing the bottle on the left side of the box.

First you need to measure up to about 1.5 inches (3.8 cm) from the bottom, and then you start to drill a 1/4 inch hole in the side. The more holes, the better the airflow after passing through the filter element. I made 4X7 holes.

Don't forget to use a file or sandpaper to clean the edges of cutting and drilling.

 

Step 9:

Now we expand the top and decide where to proceed next.

 

Step 10:

When looking at the box from the front, we hope that the bottle and the vent are on the same side, and the water supply bottle for the humidifier should be beside the exhaust fan. So we made two holes of 2.75 inches (approximately 7 cm) in diameter on the cover 0.75 inches (1.9 cm) from the edge, with a distance of 0.5 inches (1.27 cm) between the two holes.

 

Step 11:

We will also install a power switch. Please note that all marking and cutting will be done on the reverse side of the cover, so that the electric grinder will not damage the appearance during operation. Pay attention to which side is used for bottling. This side needs to be more careful when cutting to ensure that the bottles are well connected.

 

Step 12:

We use the cutting wheel of an electric grinder to make a hole, which can not go out of bounds when cutting, and finally use a file to correct the cut. Of course, the polishing wheel of the electric grinder can also be used to trim the incision. It is best to use a file to process the mouth of the bottle, because the bottle fits well.

 

Step 13:

It may be necessary to file off the mark and then install the bottle for testing to see if you need to file off a little more material. When cutting the switch hole, we use a 1/4 inch drill to make a hole in the middle, and then use a file to complete the entire area. The bottling mouth should be processed to be smoother to avoid damage to the bottle.

 

Step 14:

You can widen the hole, and then add a ring of gasket on the side to better protect the bottle and have a better appearance and packaging. Well, maybe there is not enough space for this step of processing.

 

Step 15:

Then we want to measure the hole where the fan is installed. The easiest way is to lift the fan weight in the hole and mark two installation eyes on the diagonal. We are going to use a 5/32 inch drill bit to drill the mounting hole. Now work with iron scissors to smooth the corners of the cover so that it can cover the box. Connect the bottom surface of the lid with the groove we made in the front of the box. Check the excuse. You may need to remove a lot of material to cover the lid without deformation, or even increase the depth of the groove.

 

Step 16:

To complete this step, we have to use the help of hot melt glue to fill in all the gaps on the lid. This not only ensures that the lid will not be misaligned, but also prevents air leakage. Do not seal the big opening on the front, it is used to install the power cord, and it will eventually become the back of the finished product.

Now play as you like and paint it. Make sure to seal all holes with tape from the inside so that the spray paint does not get inside.

 

Step 17:

This step is very intuitive. After inserting the bottle in the box, the water level of the bottle will bottom out. We need to modify it slightly so that the water level of the box after it is discharged is only 1/4 inch high. This is our purpose, so that the filter paper absorbs moisture and diffuses the moisture into the air. First of all, when the bottle has not been opened, we remove the cap, then use the electric grinder cutting wheel to cut out 4 1/4 inch wide and 1/2 inch deep notches at the mouth of the bottle, and then remove them with a file. Cut out and you are ready to install.

 

Step 18: Connect electronic parts

Now we are going to wire up and install electronic parts. Install the switch on the switch hole, and install the fan on the back of its opening (that is, in the cover). Fix it on the bottom edge of the switch and the plate with a few lumps of hot melt glue. We need to extend the power interface from the power hole to facilitate welding.

 

Step 19:

We only need basic soldering skills to assemble.

 

Step 20:

Weld the negative pole of the fan and the power switch together, then weld the positive wire of the fan to the switch, and weld the remaining wire to the other end of the switch. Now put the power socket in its place and fill the hole with hot melt glue. Connecting parts exposed to the outside world can be handled well with this method.

 

Step 21:

We can easily add LEDs to the circuit to display power. The noise produced by the fan is acceptable. Just choose a suitable resistor to add to the LED, because this device uses a power supply of 9 volts or more.

 

Step 22:

All that remains to be done is to cut the humidification filter paper into a suitable size, set it in place, and use any scissors at home to complete it. There is no need to use any shelf to fix the filter paper, the water bottle itself can be fixed.

 

Step 23:

Cut the filter paper to 3.5 by 4 inches (8.89 by 10.16 cm), place it against the vent of the box, and seal the lid to add water. Fill the water bottle and quickly buckle it upside down into the box. The bottom 1/4 inch of the box will be filled with water. Plug in the 9V AC/DC converter on the back, flip the switch, and enjoy replenishing air moisture.

 

Step 24: How it works

The moisture at the bottom of the container is sucked by the filter paper, and the fan draws air through the vents, and the moisture is taken away by the filter paper. Then the ideal humidity air is blown out by the top fan. When the water volatilizes into the air, the water bottle will add water to the container from time to time.

 

Step 25:

A full 20oz (560ml) water bottle can last for 8 to 9 hours, depending on the quality of the fan you use, enough to make it work smoothly in the office. Remember to replace the filter element every month, or when the upper part of it turns brown. Turning on the fan when there is no water can speed up the drying of the filter element and help prevent the growth of mold.

  about 5 days ago

Noob 7903

Undefined Job

Hello,I've mount a levitation module I bought on Banggood. When I present a magnet on the top, I've only a lighting LED and nothing more. The potentiometers don't seems to act anything.Someone can help me?There's two jumpers and I saw in another version of module that's can be used for plug an amperemeter to measure something, but what value?[URL=https://www.casimages.com/i/Erreur 1.html][IMG]https://.casimages.com/img/2021/11/21/Erreur 1[/IMG][/URL][URL=https://www.casimages.com/i/Erreur 1.html][IMG]https://.casimages.com/img/2021/11/21/Erreur 1[/IMG][/URL][URL=https://www.casimages.com/i/Erreur 1.html][IMG]https://.casimages.com/img/2021/11/21/Erreur 1[/IMG][/URL]

  about 6 days ago

Noob 7868

Undefined Job

The STM32F103C8T6 board-also known as Blue Pill-is the development board M3 microcontroller of ARM Cortex. It looks very similar to Arduino Nano, but it contains more functions.In this article, I will show you how to set up STM32 using Arduino IDE and show you how to program directly from the USB UART module.STM32 overview "Blue Pill"If you look at this $2 microcontroller, the first thing you see is its jumper pins, which are used to use the default USART bootloader. There is also a micro USB port on the board, but unfortunately it cannot be used for programming because it does not have an associated bootloader.Compared with the official Arduino boards, these boards are very cheap and the hardware is open source. In addition to the microcontroller, the board can also accommodate two crystal oscillators-an 8MHz crystal and a 32KHz crystal-which can be used to drive the internal RTC (Real Time Clock). Therefore, the MCU can work in deep sleep mode, which is very suitable for battery-powered applications.To program the board, we need to use a simple USB to UART converter, and then we can program it directly from the computer via USB.PIC01STM32 pinoutRequired materialsSTM32 F103C8T6USB to UART converter (FTDI)JumperBreadboardArduino IDEWiring projectConnect the circuit boards according to the connections shown in the Fritzing diagram below and connect them to the computer.PIC02Fritzing diagramUse the build settings with jumpers in place.Connect the jumper as shown in the figure below, set the circuit board to DFU mode (device firmware upgrade), and then press the "reset" button.PIC03 04Set up STM32 on Arduino IDEOpen the Arduino IDE and select preferences.PIC05Click the "Other Board URL" option and add this URL after the comma:http://dan.drown.org/stm32duino/package_STM32duino_index.jsonPIC06. 07Then click Tools→Boards→Board Manager.PIC08After performing the above steps, you can see STM32 in the board list. Now select STM32F103C.PIC09Because we use the UART module to upload code, we choose Upload Method as Serial.PIC10Select Blink sketch from the example.PIC11Use "PC13" to change the LED pin number, as shown in the screenshot below. This is the name of the built-in LED in the circuit boardPIC12Project source codevoid setup() {// change pin PC13pinMode(PC13, OUTPUT);}//infinite loopvoid loop() {digitalWrite(PC13, HIGH); // turn the LED on (HIGH is the voltage level)delay(1000); // wait for a seconddigitalWrite(PC13, LOW); // turn the LED off by making the voltage LOWdelay(1000); // wait for a second}Upload the code to the Arduino IDEUpload the code now.PIC13Uploaded successfully!in conclusionIf the program has been uploaded successfully, you should see the green LED flashing at 1 second intervals. You can also use this program to increase or decrease the delay of the LED lights.After uploading the program, you should change the jumper back to the normal mode so that the uploaded program will automatically start to execute when the circuit board is turned on next time.

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Noob 7868

Undefined Job

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ELECTRONOOBS

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This PCB is a metal detector. The circuit is very easy and I will do my best in this tutorial to explain to you how it works. I use real examples and animations in the video below so you will understand everything. The PCB is interesting because it already has the coils on the board made with the copper tracks, so we don’t need external coils made with copper wires. I will share with you the schematic for this project and the GERBER files in case you want to order this same PCB and start making tests with it. All the links are below. So guys, what do you think? Will this PCB be capable of detecting metal and if yes, how good is it? So, let’s get started.

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ELECTRONOOBS

Electronic Engineer and YouTuber

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Undefined Job

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Undefined Job

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