HiFi Multi-room WiFi & Bluetooth Speaker

-Stream via WiFi or Bluetooth 5.0
-Airplay, DLNA, Spotify Connect Supported
-24bit,192khz Decoding, FLAC, WAV, APE supported
-Multiroom & Multizone with multiple units
-Android & iOS app Supported
-Spotify,Deezer,Tidal,Qobuz,Napster,iHeartRadio available
-Stream music from NAS, USB
-IIS for external DAC use
Supplies:
1. WiFi Audio Receiver: to form a WiFi speaker you initially need a WiFi audio receiver which may stream music wirelessly via a network. I used Up2stream Pro WiFi&Bluetooth HiFi Audio Receiver Board from Arylic. Up2Stream Pro, a WiFi and Bluetooth 5.0 HiFi audio receiver board are often wont to upgrade your regular sound system WiFi and Bluetooth enabled with multiroom function. On their app, you’ll stream music from Spotify, Deezer, Qobuz, Tidal or local files from NAS, etc. 24bit,192kHz decode makes an excellent sound. AirPlay, DLNA, UPnP brings you more possibilities.

Up2Stream Pro has following features:

Support WiFi & bluetooth 5.0 connected devices
Bluetooth 5.0 receiver distance transmission around 20-30 meters.
Adding I2S interface available (DOUT, BCLK, LRCK, GND).
Spotify, Deezer, Tidal, Qobuz, Napster and more available by free update.
Line in, usb music source are often retransmission to other unit and play it in sync.
Add Ethernet interface to attach devices on to the network via the cable.
Replace the facility interface with Micro USB.

2. Audio Amplifier Board: For an audio amplifier, you have lots of options. First, you need to determine the power capability (Watts) of the audio amplifier. Then select mono or stereo

3. 2Pcs 6 Inch 40W Speaker: If you use 40W audio amplifier board you need two 40W speakers.

4. 16V, 4A DC Power Supply: 

5. 3.5mm 1/8″ Jack to 2 Male Stereo Phono Audio Speaker Adapter CABLE (RCA)

6. 7805, 5V regulator

7. Some wires

Handtools

1. A-BF Soldering Station

2. Wire Stripper cutter

3. Multi-Function Rechargeable Hand Drill

Step 1: Making the Box (Front Side)

For placing all the components and speakers you’ll be required a box or case. i decided to form a wooden box for my speaker. The box size are going to be 17 inch X 10 inch X 8 inch. So, I took 4 pieces of wood of the above size. the foremost working I even have done on the front piece. I cut two circles for 2 speakers. for putting the amplifier board a made a deep cut of size 2 inch X 6 inch which also includes 4 round hole for bringing out the knob of the amplifier board. Then I sanded all sides of the wooden piece to form it smooth.

Step 2: Soldering Wires to the Speakers

Speaker cables connect the outputs of the facility amplifier or the amplifier section of the receiver to the speaker. These cables carry the high-powered electrical currents required to maneuver the interior components of the speaker (the magnets that move the drivers).

You need one pair of speaker cables for every speaker in your home theatre (except the subwoofer, if it’s a lively system that uses an analog audio interconnect cable). Some expensive speaker systems can use two pairs of speaker wires per speaker.

Before placing the speakers on the wooden piece I soldered insulated copper wire piece of 20 cm long to every input terminal of the speaker. it’s better to tinned the wire pieces before soldering them to the speakers. After soldering the wires I placed the speaker to the proper place of the wooden piece and glued it to the wooden piece through screws.

Step 3: Placing the Speakers

After soldering connecting wires to the speaker I placed the speakers in the right place of the wood piece. I used 1/2 inch screws to fixed the speaker with the wood piece. Before fixing the speaker you should be sure that the speakers are perfectly aligned to the holes.

Step 4: Fixing the Amplifier Board

After fixing the speakers you would like to put the amplifier board to the front piece. An amplifier is required to form sound waves (audio) louder by making their waveforms bigger (amplifier). So to play sound during a bigger speaker an amplifier circuit is required. Up2Stream Pro isn’t capable to drive these speakers directly without an amplifier circuit. To fixed the amplifier to the proper place I used hot glue.

An amplifier’s job is to show alittle current into a bigger one, and there are various alternative ways to realize this counting on exactly what you’re trying to try to to .

If you would like to spice up a fairly constant electric voltage, you’ll use an electromagnetic device called a transformer. Most folks have a house filled with transformers without realizing it. They’re widely wont to drive low-voltage appliances like MP3 players and laptop computers from higher-voltage household power outlets, They’re also utilized in electricity substations to convert very high-voltage electricity from power plants to the much lower voltages that homes and offices require. altogether these everyday cases, transformers are turning large voltages into smaller ones, (they’re “step-down” transformers), but we will also use them the other way (as “step-up” devices) to spice up smaller voltages into bigger ones.

Step 5: Connecting Speakers With the Amplifier Board

Connecting a speaker to a stereo receiver or amplifier with basic speaker wire looks like an easy process — and for the foremost part, it is. But you would like to remember of some details to make sure the simplest results. for instance , reversing wiring polarity may be a simple but common error which will significantly degrade your audio experience.

Most all stereo receivers, amplifiers, and standard speakers (i.e., ones that are ready to receive signals through speaker wire connections) feature terminals on the rear for connecting speaker wires. These terminals are either the spring clip or binding post type.

These terminals also are nearly always color-coded for straightforward identification: The positive terminal (+) is usually red, while the negative terminal (-) is usually black. Note that some speakers are bi-wire capable, which suggests the red and black terminals are available pairs for a complete of 4 connections.

Basic speaker wire — not the RCA or Optical/TOSLINK kind — has only two parts to affect on each end, a positive (+) and a negative (-). Simple, but there’s still a 50-50 chance of getting these connections wrong if you are not careful. Obviously, this is often something that’s best avoided, because swapping the positive and negative signals can seriously affect system performance. It’s well worth the time to double-check that these wires are correctly connected before powering up and testing the speakers.

While the terminals on the rear of stereo equipment tend to be easily identified, an equivalent can’t be said for speaker wires. this is often often where confusion can occur because the labeling isn’t obvious.

If a speaker wire doesn’t have a two-tone colour scheme search for one stripe or dashed lines (these usually indicate the positive end) along one among the edges . If your wire has light-colored insulation, this stripe or dash could also be dark. If the insulation may be a dark color, the stripe or dash is more likely to be white.

If the speaker wire is obvious or translucent, check for printed markings. you ought to see either (+) or (-) symbols (and sometimes text) to point polarity. If this labeling is difficult to read or identify, use tape to label the ends after you recognize which is which for quicker identification later. If you’re ever unsure and wish to double-check (especially if you’ve got a jumble of wires), you’ll quickly test the speaker wire connection by employing a basic AA or AAA battery.

Speaker wires are most ordinarily found as bare, meaning that you simply would use a wire stripper to show the strands at the ends. It’s good to twist the bare wire strands tightly in order that they stick together as a neat single twisted wire, regardless of if your equipment uses spring clips or binding posts.

You can also find speaker wire with its own connectors, which may facilitate connections also as help quickly identify polarity if they’re color-coded. Moreover, you’ll install your own connectors if you do not wish to fumble around with bare wires. they will be purchased separately to upgrade the ideas of your speaker cables.

Pin connectors are used only with spring clip terminals. These pins are firm and straightforward to insert.

Banana plug and spade connectors are used only with binding posts. The banana plug inserts straight into the connector hole, while the spade connector stays secured in situ once you tighten down the post.

Step 6: Completing the Box (Left Side)

After placing the speakers and connecting the speakers with the amplifier box I started to complete the box. I started with the left side. Before attaching the left piece to the front piece I make 3 holes in each piece so that I can add screw very easily. Then I added the pieces together with the screws.

Step 7: Completing the Box (Right Side)

THE SAME PROCEDURE LIKE LEFT SIDE.

Step 8: Connecting Up2stream Pro

Up2stream Pro requires 5V regulated supply for stable operation. On the opposite side, the amplifier board requires 16V dc. So I used a DC supply of 16 V and that i used a regulator (LM7805) for getting 5V for Up2stream pro from the 16V supply. Up2stream Pro contains screwed terminal for connecting power supply. So, it doesn’t require any soldering and it’s an honest option.

It also contains 3.5mm port for audio output and that i used 3.5mm audio to double RCA to supply the audio signal from Up2stream pro to amplifier .

For placing the Up2stream pro inside the box I used small screws to repair it with the box wall. The Bluetooth and WiFi antenna contains epoxy thereon . So you’ll directly place it to any surface just removing rock bottom surface cover.

Step 9: Managing the Wires

For avoiding lose connection and displacement I add all the cables and wires with a zip tie. Antennas are placed with the inside wall of the box.

Step 10: Finishing the Works

After placing all the circuits and modules inside the box and fixing in place I put the top wooden cover with the screws. Then I added the control knobs with the potentiometers. The speaker is now ready to test and enjoy.

Power up the circuit from 16V power supply, connect it to the wifi using 4STREAM android app and enjoy.

SOURCE ————– www.instructables.com

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