Kitronik Mono Amplifier V3.0 Pre-Built

This quick assemble box is a fantastic choice for housing your MP3 mono amplifier kit.

Perfect for those times when you want to do an electronics focused practical task without spending weeks on the enclosure. The box is supplied flat and folds up easily. When assembled there is compartment to house the speaker, a seperate compartment for the PCB and another for the batteries. The cardboard case can be painted, varnished, drawn on or covered with fabric creating a high quality sturdy enclosure quickly and effectively.

Note: Supplied as a single piece of cardboard that folds into a 3 compartment enclosure for your amplifier project. Supplied as a box of 20 individual Cardboard Mono Amplifier Cases.

Features:

Easy and quick to assemble.

Compact and simple 3 compartment design.

The plain cardboard is easy to decorate and personalise.

Contents:

20 x Cardboard Mono Amplifier Case (for Amp kit)

Dimensions: (when assembled)

Length: 78mm.

Width: 73mm.

Height: 74mm.

Version 3 is the newest version of our best selling Mono Amplifier Kit that can be used with any personal stereo equipment, including MP3 players, making it an ideal kit choice for an amplifier case design project.

It uses an NCP2890 audio amplifier IC which is pre-mounted on the underside of the board (see image below) and can output 1.0W of power. The NCP2890 is an audio power amplifier designed for portable communication device applications such as mobile phone applications and PDAs. The IC also features an onboard “Pop and Click” at startup and closedown Noise Protection Circuit.

The kit is supplied with a pre-built jack cable, an 8ohm 66mm speaker, and a AA battery pack and can run off any voltage from 2.2 to 5.5 Volts (Absolute Maximum 6V). For a full list of parts, see the Contents section below.

Previous versions of this amp included a PP3 power connection and were designed to operate around 9V, V3.0 has been designed for use with 2 x AA batteries. There are several advantages to using AA batteries over PP3, they include; AA batteries are much cheaper, more readily available and will also last significantly longer than PP3 batteries, anything up to ten times longer.

Features:

Great value electronic project kit.

Works with any stereo equipment, including computers, phones, and tablets that can accept the jack lead.

Contents:

1 x 15K Resistor.

1 x 100K Resistor.

1 x Ceramic Disk Capacitor 100nF.

2 x Capacitor, Electrolytic, 50V, 1uF.

1 x 3.5mm Mono Jack Lead, 50cm length.

1 x 8 ohm 66mm Speaker.

1 x AA battery Cage with Leads.

1 x Mono Amplifier PCB with pre-installed NCP2890 audio amplifier IC.

Dimensions:

PCB Length: 44.5mm.

PCB Width: 35.5mm.

PCB Height: 1.6mm.

The LED kit contains red, green & yellow LEDs in 3mm, 5mm and 10mm round sizes as well as some Colour Changing and Tri colour LEDs plus some 5mm LED panel mounting holders. 105 parts are supplied in a multiple compartment storage box.

Features:

Large selection of LEDs.

3mm, 5mm and 10mm Red LEDs.

3mm, 5mm and 10mm Green LEDs.

3mm, 5mm and 10mm Yellow LEDs.

5mm LED holders.

Colour Changing LEDs.

Tri colour 5mm diffused LEDs.

Contents:

10 x 3mm Red LEDs.

10 x 5mm Red LEDs.

5 x 10mm Red LEDs.

10 x 3mm Green LEDs.

10 x 5mm Green LEDs.

5 x 10mm Green LEDs.

10 x 3mm Yellow LEDs.

10 x 5mm Yellow LEDs.

5 x 10mm Yellow LEDs.

10 x 5mm Panel Mount LED Clips.

10 x Colour Changing 5mm LEDs.

10 x Tri Colour 5mm LEDs.

1 x LED Kit box.

Kit Box Dimensions:

Length: 174mm.

Width: 140mm.

Height: 32mm.

Compatible with:

Raspberry Pi Pico

Micro:Bit

The MI:sound board is a speaker board for the BBC microbit. It features on-board; speaker, CR2032 battery holder, thumbwheel volume control and an easy access on/off switch. The MI:sound board can either be powered by the CR2032 battery (provided) or via the micro:bit USB or JST connections. It has been designed to work with micro:bit V1 and micro:bit V2.

The speaker on MI:sound can be used in conjunction with the micro:bits onboard speaker or instead of. The micro:bit speaker can be turned off as there is a command/block for that in the MakeCode editor. Why would you want to? Volume! MI:sound's speaker is loud, and the potentiometer gives you control over its volume without the need to head back into the code. Super convenient!

To use the MI:sound speaker board, the BBC micro:bit should be attached using the supplied bolts, spacers and nuts. Only Pin 0, 3V and GND need to be connected. Crocodile clips can also be used.

When assembled, the MI:sound board is connected directly to the 3V, GND and P0 connections on the micro:bit. The 3V and GND connections provide power to the micro:bit and the built in buzzer is connected to P0, which is the default output pin when using the audio functions in the MakeCode software. The board has an easy to access on/off switch, which makes it easy to turn a project on and off.

Like the MI:power board, MI:sound offers an elegant solution for micro:bit projects on the move. Both boards provide power to micro:bit, feature an on/off switch and allow you to output sound. Sound though is a much bigger feature on the MI:sound board. Where the MI:power board features a buzzer, MI:sound has an actual speaker with a thumbwheel volume control. Not only is the speaker more versatile than a simple sounder, it is also much much louder. So, in brief; the MI:power board is more compact and MI:sound is better for projects where sound is an integral part of the project.

Features:

Power your BBC micro:bit from a stylish PCB.

It features an on-board speaker and it's loud!

There is a thumb wheel operated potentiometer volume control.

There is an onboard CR2032 battery holder.

The board features easy access on/off switch.

Designed to work with micro:bit V1 and micro:bit V2.

Contents:

1 x MI:Sound speaker board for BBC micro:bit V2.

3 x 12mm M3 Countersunk Screw.

3 x M3 Steel Nuts.

3 x Nylon Spacers.

1 x CR2032 Coin Cell.

This is the perfect speaker for projects that produce sound but where space is tight or where the speaker needs to be discreet. These speakers work well with the BBC microbit; you can code the microbit to play music or emit a beep as an alarm and this little speaker will do an admirable job.

This a 0.25W, 8ohm speaker is only 40mm in diameter and just over 4mm thick making it very similar in size to those found in talking greeting cards, you could even design a microbit talking greeting card that has the built in micro:bit as a present as well as part of the card.

Features:

8ohm speaker that is ideal for use with the BBC microbit.

4mm thick, making it ideal for use as a discreet speaker.

Contents:

1 x 0.25W, 8ohm speaker.

Dimensions:

Diameter: 40mm.

Thickness: 4mm.

Requires:

Soldering Iron.

Solder.