Questions tagged [Do it yourself] (1190)

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What are the popular community of fans of woodworking and DIY?

What are the popular community of fans of woodworking and DIY? Where you can read useful articles, communicate with people "in the know". Primarily interested in woodworking, CNC laser cutting wood, etc
Eliane53 asked April 19th 20 at 12:49
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What opaque film/plastic is transparent in the near IR range?

Hi all. Comrades, in great need of advice/tip professionals. Problem: need to find a material that will not be transparent in the visible light range and thus will not be a barrier to infrared radiation of the middle range. Example: the eyes see black, opaque film/plastic. And in the image with night surveillance camera - y...
nettie_Towne52 asked April 19th 20 at 12:24
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Create drone — where to start?

Hi vyelikii minds ) In view of the current situation decided nemnogo to devote time to the topics of automation of the house and garden. Actually the case I have a fairly large plot of land which I hands treated against ticks. Having relatively straight arms I had a crazy idea automatisierte this process with the help of...
abigal asked April 18th 20 at 13:37
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How to charge the battery?

Good day There are 2 batteries as pictured Is it possible to connect them together and charge from the car charging (~10% of current) ? And whether they are suitable for the organization of lighting ? For example, small led light bulb 10W 12V ? Thanks in advance
nicholaus80 asked April 18th 20 at 13:33
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How to transfer data from usb to uart audio in stm32f103c8t6?

Create a project in CubeMX for TrueStudio, the usbaudio class quality the lowest (telephone connection) to the bandwidth uart enough. The device is identified in Windows shows that sound is playing. Tell me where to find the incoming usb data? On what event to send the data in uart?
Keyon_Wilkins asked April 18th 20 at 12:13
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How to choose a "smart" film for tinting and how to manage it?

Hello. You need a "smart" (the darkness of which can be adjusted) film for tinting (a piece of 25x25 mm, if it is important). Do not have to adjust the darkness, only two modes: ±95% transparent, ±20% transparent with low haze/fog. This behavior I found in the filter masks of the welder "chameleon" which, but there is a s...
Theodore_Orn asked April 16th 20 at 11:11
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Insulation of the refrigerator?

All welcome. Could not find in the Internet the exact answer to the question. Is it possible to close the box with the compressor at the rear of the refrigerator? What the outside sounds but the sound of the compressor in the apparatus was found. Because of that easy high-frequency whistle clearly sticks in his ears. Fully ...
Maiya_Doy asked April 16th 20 at 10:55
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How to close the contact of a button control using optocouplers?

Hello, I need to close a tactile button on the home appliance with electrically insulated device. There is a optocoupler with a NPN transistor (817С). Want to know how to act. Right I understand that I will need. 0) Solder wires to the button. 1) to Measure the potential at the contact of a button. 2) properly connect the ...
Sharon.Gra asked April 16th 20 at 10:43
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Backup power supply for MacBook pro and monitor, 7-10 hours?

Hi, work on remote, from time to time turn out the light, but continue working it is necessary) What you can get for a MacBook Pro 15 85w and monitor 33w? Now think about a car battery and inverter 12v - 220v (300w-500w) the type of such But the question is which battery to take and what capacity? I read that it is bette...
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How to stabilize the current/voltage from an unstable power source?

A Chinese thermometer with LCD display. Decided to make it eternal by connecting as a power supply instead of batteries inistr 1 Farad with a small solar panel. But here's the thing, the solar panel gives out depending on the lighting of about 1.2-5 volts and current ratings from 1 to 50ma. The Chinese thermometer generally...
jerome.Goyet asked April 16th 20 at 10:10