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Hi-Tech / Hardware

Samopal.pro

Found 21 items

In November of last year, I bought on Aliexpress a good clone Prusi I3 with a steel frame For the 7 months I spent almost 5 km of plastic and remembered with horror the days when life sorry eked out without a 3D printer. All the small improvements to this printer, I did and was already thinking about a major upgrade. But life decided otherwise — the old printer managed to attach in good hands. And here, again, the meal of choice. Budget found themselves $300 and it was decided to stay on the "flying bear" Flyingbear P905, but a guru with 3DTODAY advised to look at Chinese Ultimaket 2 CL-206. Drew, liked, bought, on how and review. the Printer Ultimaker-2 CL260, as proudly written in the product description. The cost is $320. At the time of purchase was a...

Year of operation of the controller control the fan in the bathroom on the ESP8266 has revealed a lot of shortcomings in operation. Although integration into the MajorDoMo of this device was a great success, the main of them created problems "Hang up" of the controller in the absence of the server or wifi, associated with timeouts in the TCP/IP Protocol controller Reboots during intensive information exchange with the server is Remote on button the fan out of the toilet constantly catching interference, causing a false on / off Experiment with MQTT protocols/HTTP and other, nothing has changed. 100% reliability and did not work. When looking at ways to solve the problem is to get back on the Atmega328, go to ESP32 or look for more stable firmware ESP8266...

Weather station with NRF24L01 works for me for several years. Problems with the sensor. Several times in the rain sensor was no longer transmitting, but then everything was restored. Recently I was able to the indicator. Likely to oxidized contacts. Or posting somewhere disappeared. Still suspended mounting — not the most reliable things in the world. The main drawback of existing solutions is the lack of backend. I would like to be able to put all the data into a single system with the ability to display and use this information for other components of the smart home. End of the long preamble. Next is an article about the new weather sensor at the base of the module with BME280, NRF24L01 Mysensors library and connected to the Majordomo server. Technical...

How many reviews dedicated led for plants. How many copies broken in heated debates about their usefulness for plant growth. In this review, I want to investigate whether all the LEDs sold on the open spaces Aliexpress and other Chinese stores are the same. a Little bit about the design of LEDs the Led crystals emit almost monochromatic light, depending on the semiconductor material. to get yellow, white or the same "full of plants" emission spectrum — apply the phosphor coating, which converts the primary radiation into a secondary method photoluminescence Typically, such a led consists of a housing with the substrate and the terminal, which is soldered or welded to the led chip silicone lens forming the radiation direction, the strip with phosphor and a...

In this article overview of the printer ZONESTAR P802QSU clone Prusa I3 with a steel frame. Need become a cheap printer to print prototype buildings of different devices. the First thing was the idea — to collect myself. Because the experience of design and Assembly of CNC machine was already. But the study RepRap.org and smachivanie certain projects, as well as reading the relevant forum and sites showed the following Savings when you purchase the individual parts are very minor (if any at all) than buying a similar ready-made kits for Self Assembly build your first printer may be delayed for several months As a model self-assembled the printer's function from so many unknown So it was decided to buy ready-made kit. The choice fell on the printer ZONESTAR...

Recently put together a new CNC machine for drilling and engraving of printed circuit boards, enclosures and other details. For CNC machine purchased motor spindle with adjustable speed. Amateur itching haunted — wanted to have on stanochek poisoner revs. Option with optical encoder seemed too complicated. The hall sensor, which is used in all cars, was not at hand. And then on one forum I tossed the idea is to try the IR sensor. Just idle lay the IR object sensor, which knew not where to apply. Decided to try it and this is what came of it. This module is mainly applied in arduinome in robotsreallyche as the IR object sensor. A small budget is very simple (especially if you buy lots of pieces 10) the Scheme of this sensor is very simple it is based on IR...

In the previous review, I described the General characteristics of my new stanochek NC the Subject of this review — spindle motor with power supply, mounting bracket and cartridge Bought on Aliexpress for $86 with shipping the characteristics of the DC Motor with air cooling of the Declared maximum power: 300W rotation Speed: 3000-12000RPM Maximum torque: 0.23 N*m supply voltage Max: 48V Diameter: 52mm length 180mm (with cartridge and fan) for milling Chuck: ER11 Set Motor Aluminum bracket for montage power supply with potentiometer speed control Cartridge c replacement 14 ER11 collets of different diameter and nut Four screws bracket hex have Carefully studied the inside of the power supply, however to understand the scheme failed. The basis of all there...

This machine is designed for drilling and milling of PCB material (PCB fabrication), wood and plastic. After a small upgrade with the replacement of the plywood elements for the metal — soft metal. the Machine was designed as a desktop replacement purchase Chinese staneck. It is quite quiet in operation and compact. the characteristics of the Design — movable Desk Working area — 265×230 mm workpiece Height 50 mm Max. stroke Z — 80 mm Spindle — 300W air-cooled and adjustment revs 3000-12000RPM Stepper motors 17HS8401 (1.8 A) dimensions of the machine 400x400x370 mm Weight 16 kg Components and materials Frame. the Vertical frame (portal) is: the upright. Profile 2020 350mm — 2pcs 2020 Cross-section 300mm — 4 PCs motor Mount — profile 2040 130mm — 1pcs...

The MAX7219 Chip — ready driver for the seven segment and matrix LEDs. In the seven-segment indicator I have used it in the fan controller and weather station. In this article I will write about the ready to use led modules with MAX7219. Modules 8×8 MAX7219 are sold by the piece or finished assemblies 8×32. I took the individual modules are 8×8 with a price of little more than a dollar apiece. Since the amount of more than 1 piece was pay shipping, not lazy, made 8 orders. included a scarf with the chip, the indicator itself, the connectors for the indicator and to connect each Board. the Dimensions 3.2 cm X 3.2 cm Connected to the microcontroller via the SPI "one-way" three wire. Modules cascade — DIN>DOUT. All other conclusions separateline. by Connecting...

Chinese company JACKLY quite popular with their own "yellow" sets of slotted screwdrivers . But there are more expensive sets of tools. One such and today I want to tell. so set JACKLY HT0101 of the 88 items. The price at the time of this writing, $28 with free shipping Colorful, slightly dented box On the reverse side a list of content Bag organizer black nylon And inside all this wealth. At least this is not ashamed to give a good man First asks to pick up a box of screwdriver replacement slotted and 64 bits it would Seem, why such diversity? the roots of the common flat (straight slot) screwdriver back in the 17th century. How many corns erased them in the USSR and how many screws with mangled heads. Flat nozzles are presented in a set of 7 instances...

Not long ago I surveyed a module Sonoff POW that allows you to measure electricity consumption and output data over WiFi. Strongly disliked the absence of any indicator, low functionality, as well as the lack of galvanic isolation from the network 220, which can lead to disastrous results. finally got ready to charge PZEM-004T with the purpose of assembling the power meter independently. requirements for the power meter: galvanic isolation current measurement 220V Informative display Wireless connection to the computer is the Ability to save measurements and then viewing or copying to your computer. The accuracy is not less than 5% my Choice fell on module PZEM-004T in the form of a separate fee. module Characteristics Measurement of current voltage AC...

A lot of information on different radiocomponents passes by. I decided the most interesting (especially for myself) to be collected on this page Shop: Imc Digital Technology Company Ltd. Housing, power supplies, switches, connectors, individual parts for CNC. Very much any small things at interesting prices the Housing for the equipment at interesting prices Plastic and aluminum. Prices from $1.22 12V power supplies from 2A to 20A The post Interesting on Aliexpress appeared first on homemade.pro.

In previous articles, I described how tested various LEDs for plants. For spectrum analysis I used a diffraction grating spectroscope and school-based prism taken a friend's physics teacher. But the need for such a device periodically appears and the spectroscope, and even better spectrometer would like to have on hand. the Ideal entrance would be the purchase of a spectrometer, but the toad politely shook his head. Attempt to mock spectrometer from CDROMa good stable result is not given. And then my mind turned to jewelry spectroscope. Cheaper segment of the Chinese market presents two types of spectroscopes with prisms and slightly more expensive — with a diffraction grating. My choice — jewelry spectroscope with a diffraction grating just the thing for...

Again my overview about the modules of "smart home" SONOFF from the company ITEAD.CC. I already wrote about the development of their firmware under the module Sonoff TH16 Sonoff LED Today we will talk about the "smart relay" that can not only turn on/off the load, but also to measure its capacity. Initially, the POW module, as other modules Sonoff, works through the app WeLink. But functionality of the standard firmware seemed to me a little. And write firmware modules Sonoff experience is already there. Poetomu will immediately begin programming the device. To measure the energy this device uses mikroshemka HLW8012 Chinese company HLW Technology. Datasheet on it, I found only the Chinese language. This chip is a single-phase meter root mean square (RMS...

Orange, the company has released an update to its Board the economy class PLUS PC. the Price in the official store on Aliexpress $20 excluding shipping. In this article: Install LINUX to internal memory performance Testing eMMC WiFi setting the Previous version — PC Orange PI has a quite good ratio quality/price and, not without effort on sales to the notorious store, bought quite a lot of popularity. the characteristics of the ORANGE PI PLUS PC (bold marked differences from the version without the plus) CPU Allwinner H3 Quad-core Cortex-A7 with a frequency of up to 1536 MHz Graphics adapter Mali400MP2 GPU @600MHz RAM 1GB DDR3 internal memory EMMC Flash 8 GB Slot for MicroSD (Max. 64GB) / MMC card slot 10/100 Ethernet RJ45 Ethernet WiFi module Realteck 8189...