Make a power supply using LM317

The LM317 is an adjustable three-terminal positive-voltage regulator capable of supplying more than 1.5 A over an output-voltage range of 1.25 V to 37 V. It is exceptionally easy to use and requires only two external resistors to set the output voltage. Furthermore, both line and load regulation are better than standard fixed regulators. (more…)

Gallery- one transistor FM transmitter

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step11- another angle StripBoard with columns The back side of the strip board connection of wires to stereo jack step3- fix 10pF (C5)capacitor Step 15- Solder the antenna Step 14- Fix 9V connector step 13- Solder the stereo speaker jack Step 13- Another angle Step 13- a close view Step 12- Solder inductor (2) Step 12- solder inductor Step 13- a close view (2) Step 11- Fix the electret microphone step 11- microphone step 11- solder 30PF(C6) step 11- another angle1 Step 10- Fix R¤ and R3- 33Ohm resistors step 10- another angle step 8- top view step 9- another angle step 9- Solder C8(0.1uF) Step 7- Solder 0.1uF(C2) step 8- another angle Step 8- Solder R1(2.2K) Step 6- Fix 680pF(C3) and a jumper wire connecting to GND Step 5- Fix 30PF(C4 ) and a jumper wire connecting to GND step 4- Fix 30pF(C7) step 1- solder S9018(Q1) transistor step 2- fix 22k(R2) and 2.2K(R3)

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How to make one transistor FM transmitter on a stripboard- page 2/2

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Continued….

Now, solder C8 (0.1uF- code 104) capacitor. One terminal of the capacitor is connected to the +ve and the other to the -ve terminal of battery. After connecting C8, it is not necessary to connect C1 because both have the same purpose in the circuit. So, you can simply ignore C1.

(more…)

USBtinyISP V2 AVR ISP Programmer

Officially supported by Arduino IDE, it can burn Arduino bootloader onto chips, and practically program any Atmel AVR microcontroller by this powerful AVR ISP programmer.

Summary

  • Assembled and ready to use
  • 6-pin AVR-standard interfaces
  • 2 LEDs to indicate “USB/Power good” and “Busy”
  • USB powered
  • USB cable (A to B type) is NOT included

How to use USBtinyISP V2 AVR ISP Programmer ?

  1. Download driver, unzip and install
  2. When you see “USBtinyISP AVR Programmer” in device Manager, the USBtinyISP is ready to use.
  3. There’s a jumper sticking out near the USB cable, PWR . When the jumper is in place (connecting the two wires), that means that the USBtinyISP is providing 5V power to the device being programmed. If you don’t want to power the device then just take the jumper out. We will need the jumper in place when burning bootloader for Arduino
  4. Connect USBtinyISP and ICSP of Arduino with the 6-pin cable included. Then connect USBtinyISP to the computer by USB cable (A to B type), this cable is not included
  5. After the hardwares are connected, we can start the Arduino IDE. Under the list of “Tools”->“Board” , choose your Arduino version. Then click “Tools” -> “Burn Bootloader” -> “w/ USBtinyISP” to start burning Arduino bootloader
  6. During burning, you will see the “BUSY” Led flashing
  7. It will take a while to burn (but still faster than USBasp ). You will see “Done burning bootloader” at Arduino IDE when it is done.

Package Content:

  • 1 x USBtinyISP AVR ISP  Programmer

TSA8635 – Bluetooth Audio Receiver + Enclosure

TSA8635 is a compact size and easy to use Bluetooth audio receiver. This Bluetooth music receiver connects to the Line-In or Aux input on your home audio system. You can also stream audio from your Bluetooth enabled cell phone or mp3 player to your home audio system.

 

Note: We can provide OEM/ODM service for this product.

Features:

  • Size: 41*41*20mm
  • Bluetooth 4.0
  • Stereo receive
  • Effective transmission distance: 10-15 meters
  • Micro USB female port for powering the receiver from any USB power source(5VDC)
  • Compatible with all Bluetooth devices that support media audio, including iPhone

This product can be purchased from here:

TSA7010 – Digital Bluetooth Audio Receiver Board (I2S+DAC)

This digital Bluetooth music receiver connects to the Line-In or Aux input on your home audio system. You can stream audio from your Bluetooth enabled cell phone or mp3 player to your home audio system.

It comes with an I2S output digital AudioB plus Bluetooth module. I2S digital output and music resampling frequency is 48KHz. Apt-X supported. It is based on CSRA64215. The base board is a DAC(PCM5122PWR) board which can convert the I2S digital audio to analog output.

 

Note: TSA7010 can auto-detect the Aux in/Line in Audio input. Bluetooth Audio source has higher priority. When Bluetooth audio is paused or Bluetooth is disconnected TSA7010 will auto select the Aux in/Line in audio source.

Note: You need to set the onboard switch to SPI when you are programming the module.

Features:

  • Size: 42*32*11mm
  • Bluetooth 4.2
  • Apt-X supported
  • Stereo receive
  • Effective transmission distance: 10-15m
  • Micro USB female port for powering the receiver from any USB power source(5V DC)
  • Compatible with all Bluetooth devices that support media audio, including iPhone

Documents:

This product can be purchased from here:

TSA6175 – Bluetooth 5.0 Multipoint Audio Receiver(Apt-X)

TSA6175 is a Bluetooth 5 multipoint audio receiver. You can have many TSA6175s paired and work together. You can also let it work like a normal Bluetooth audio receiver.

This Bluetooth music receiver connects to the line-In or Aux input on your home audio system. You can then stream audio from your Bluetooth enabled cell phone or mp3 player to your home audio system.

If you have audio systems in different rooms, you can use multiple TSA6175 audio receiver boards and connect all of them together. When your smartphone connects to the master module and plays music, all audio systems will have audio output.

One board works like a normal receiver

Multiple boards work together

How to Use:

Master module:

  1. Power up the module, Blue LED will slowly blink.
  2. Double press S1 to set the module into pairing mode. Blue LED flashes quickly (Voice: Pairing)
  3. Now, your smartphone will be able to find a new Bluetooth device which has name as “CSR8675”. Connect it.
  4. You can play the music now. If you only use one module as a normal receiver, you don’t need to do the following steps.
  5. Press S2, set the module to transmitter mode (Voice: transmitter mode)

Slave module:

  1. Power up the module, Blue LED will slowly blink.
  2. Make sure the master module is already working properly and is in transmitter mode. Press S3 to set salve module into receiver mode. It will automatically search the master module (Voice: receiver mode, searching)
  3. Double press the S2 on the master module. The master module will auto search (30s) the slave module. Both the master and the slave modules will be connected (Voice: searching)
  4. The slave module will have music out now.
  5. If there is any new module that wants to join as another slave module, just press S3 on the new module and double press S2 on the master module.
  6. If you want a slave module to quit, press S2 on that module.

Note: If you don’t want to hear the voice prompt when pressing S2, press the S3 to switch the mode and then press S2 again.

Features:

  • Size: 44*38*11mm
  • Multipoint connection
  • Bluetooth 5.0
  • Apt-X supported
  • Qualcomm cVc audio technology
  • Qualcomm TrueWireless Technology
  • Stereo receiver
  • Effective transmission distance: 10-15m
  • Micro USB female port for powering the receiver from any USB power source(5V DC)
  • Compatible with all Bluetooth devices that support media audio, including iPhone

Documents:

This product can be purchased from here:

3587850928228-tsa6175-bluetooth-5-0-multipoint-audio-receiverapt-x

TSA6175 – Bluetooth 5.0 Multipoint Audio Receiver

$38.28

TSA6015 – Bluetooth Audio Receiver with Microphone Input (Phone call)

This is a Bluetooth audio receiver with phone call function. There are two 3.5mm audio jacks and a phone call answer button on the board. It can work as a normal Bluetooth music receiver.

When this Bluetooth music receiver connects to the Line-In or Aux input on your home audio system, you can then stream audio from your Bluetooth enabled cell phone or mp3 player to your home audio system.

It can also work as a hands-free phone call system. It can connect to your car audio system or a headphone.

 

 

Features:

  • Size: 42*32*11mm
  • Bluetooth 4.0
  • Stereo receiver
  • Microphone input
  • Effective transmission distance: 10-15m
  • Micro USB female port for powering the receiver from any USB power source(5V DC)
  • Compatible with all Bluetooth devices that support media audio, including iPhone

Documents:

This product can be purchased from here:

TSA6014 – Bluetooth Audio Receiver (TWS/Apt-X)

TSA6014 is a compact size and powerful Bluetooth audio receiver. This Bluetooth music receiver connects to the Line-In or Aux input on your home audio system. You can then stream audio from your Bluetooth enabled cell phone or mp3 player to your home audio system. (more…)

TSA6013 – Bluetooth Audio Receiver Board (Apt-X)

This Bluetooth music receiver connects to the Line-In or Aux input on your home audio system. You can then stream audio from your Bluetooth enabled cell phone or mp3 player to your home audio system.

It comes with a new AudioB plus Bluetooth module that supports Apt-X.

 

Note:TSA6013 can auto-detect the Aux in/Line in Audio input. Bluetooth Audio source has higher priority. When Bluetooth audio is paused or Bluetooth is disconnected TSA6012 will auto select the Aux in/Line in audio source. If you need a Bluetooth receiver that has Aux in/Line in audio source with higher priority, please use our TSA6011 receiver board.

Features:

  • Size: 42*32*11mm
  • Bluetooth 4.2
  • Apt-X supported
  • Stereo receiver
  • Effective transmission distance: 10-15m
  • Micro USB female port for powering the receiver from any USB power source(5VDC)
  • Compatible with all Bluetooth devices that support media audio, including iPhone

Documents:

This product can be purchased from here:

TSA6012 – Bluetooth Audio Receiver Board

This Bluetooth music receiver connects to the Line-In or Aux input on your home audio system. You can then stream audio from your Bluetooth enabled cell phone or mp3 player to your home audio system.

It comes with an AudioB plus Bluetooth module.

Note:TSA6012 can auto-detect the Aux in/Line in Audio input. Bluetooth Audio source has higher priority. When Bluetooth audio is paused or Bluetooth is disconnected, TSA6012 will auto select the Aux in/Line in audio source. If you need a Bluetooth receiver that has Aux in/Line in the audio source with higher priority please use our TSA6010 receiver board.

Features:

  • Size: 42*32*11mm
  • Bluetooth 4.0
  • Stereo receiver
  • Effective transmission distance: 10-15m
  • Micro USB female port for powering the receiver from any USB power source(5V DC)
  • Compatible with all Bluetooth devices that support media audio, including iPhone

Documents:

This product can be purchased from here:

TSA5000 – Bluetooth 5.0 Audio Transmitter Board (AptX)

This is a compact size Bluetooth 5.0 audio transmitter. Maybe your music player (TV, Computer, DVD, Radio etc.) does not have Bluetooth function and you don’t want to use a cable to connect with our amplifier board. You can use this little thing to let your audio player connect with your Bluetooth amplifier board wirelessly. (more…)

TSA1110 – Smartphone Bluetooth Remote Audio Volume Controller – (Andorid/iOS)

TSA1110 is a smartphone Bluetooth audio volume controller. It has integrated a digital potentiometer and a powerful Bluetooth and its control distance is up to 30m (outdoor).

After it gets connected to your audio amplifier, you can use an Android or iPhone App to control the audio volume from the smartphone.

There are 3 ports for Audio in, Audio out and DC 5V. Connect this TSA1110 to your smartphone via Bluetooth first, then rotate the virtual knob.

The internal potentiometer value will change as you rotate the knob and the audio volume will also change accordingly.

A real physical volume knob is also designed for you to adjust the audio volume by simply rotating it.

Smartphone App:

1. Install the smartphone App, Android users can download the Android APP apk file directly and install it on your phone. iPhone/iPad users can search “Lazybone dimmer BLE” on App store and install that APP.

2. Open the App, if your phone Bluetooth is off, it will prompt a message to turn it on.

3. Click the Menu and then ‘Connect device’ . Phone will search for the bluetooth devices, you will find a new Bluetooth device which has name as “TSA1110”. Connect it.

4. Now, you can adjust the audio volume by rotating the knob. Click the button on the upper left corner to set it into mute state.

Features:

  • Dimension: 96x41x20(mm)
  • Working voltage: DC5V (DV12V – We have changed to 12V in latest version to get better performance,Please check the voltage label on the board)
  • Control distance: 30m (outdoor)
  • Bluetooth BLE 4.0
  • External audio volume knob
  • Support Android: Above V2.2/ iPhone 4s or later

Applications:

  • Personal computer
  • Background music system
  • Musical instrument amplifiers
  • Home DIY projects
  • Car audio

Download:

This product can be purchased from here:

TSA1020 Digital Audio Volume Controller – RCA

TSA1020 is a digital stereo Bluetooth/Single-ended audio volume controller board. It has an RCA audio input/output ports and a BVC port (only for some Bluetooth amplifier boards).

You can use it to control audio volume any normal amplifier board. The audio out signal will increase/decrease when the user rotates the knob, Bluetooth audio volume control port will also increase/decrease audio signal.

 

 

TSA1020 external volume control board

Pins define:

Port name Pin name Direction Description
BVC

Bluetooth volume control

 

5V
GND
INC Digital Out Bluetooth audio volume +
DEC Digital Out Bluetooth audio volume –
SEL Digital In Bluetooth/Single-ended select

1-Bluetooth,

0-Single-ended select

Features:

  • Size: 8.1cm x 3.8cm
  • Bluetooth audio volume control
  • Singal-ended audio volume control
  • An external audio volume knob
  • Working voltage: DC 8V-39V

This product can be purchased from here:

TSA1010 Digital Audio Volume Controller

TSA1010 is a digital stereo Bluetooth/Single-ended audio volume controller board. It has two 3.5mm audio jack and a BVC port.

You can use it to control the audio volume of any normal amplifier board. The audio out signal will increase/decrease when a user rotates the knob and Bluetooth audio volume control port will also output an increase/decrease in the control signal.

 

TSA1010 external volume control board

 

Pins define:

Port name Pin name Direction Description
BVC

Bluetooth volume control

 

5V
GND
INC Digital Out Bluetooth audio volume +
DEC Digital Out Bluetooth audio volume –
SEL Digital In Bluetooth/Single-ended select

1-Bluetooth,

0-Single-ended select

 

Features:

  • Size: 6.6cm x 3.8cm
  • Bluetooth audio volume control
  • Singal-ended audio volume control
  • An external audio volume knob
  • Working voltage: DC 8V-39V

This product can be purchased from here:

Protoboard for electronic projects

We make electronic projects for exhibitions, hobby and academic assignments and all the projects need a power supply. Most of the hobbyist projects operate at 3.3V, 5V, 9V and 12V power supply. Keeping this requirement in mind, we have a designed a PCB that resembles a Mini breadboard and has an inbuilt power supply on it.

(more…)

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