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Kitronik Mono Amplifier Kit Version 3.0

Manufacturer: Kitronik

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.

SKU: KI 2165

Availability: 69 in stock

€4.75

Qty:

i h

Product Resources / Datasheet

Teaching Notes.

Essential Information.

Which Amplifier kit is right for you?

Guitar Amp enclosure design.

Clip together mono amp case design.

3D Printed pocket-sized Mono Amp enclosure design.

3D Printing Resources.

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Kitronik Prong Soil Moisture Sensor for micro:bit

KI 5647

Due back in stock early December

The Prong soil moisture sensor for BBC microbit is a sensor board that can be directly mounted to a BBC micro:bit to monitor the moisture present in the soil. The two conductive tines are placed into the soil. Any water or moisture in the soil will conduct to give an analogue voltage that can be read by the BBC micro:bit.

Prong is powered from the 3V supply of the BBC micro:bit. Use either the USB or JST connector on the BBC micro:bit to power the circuit. Prong and the BBC micro:bit can also be powered from the Mi:Power board to create a compact stand-alone unit.

The board has been designed so that the BBC micro:bit can be bolted on using 3 x M3 nuts and 3 x M3 screws. Place the screws through the P1, 3V and GND holes of the PCB and BBC micro:bit, then use the M3 nuts to fasten together on the back of BBC micro:bit. Alternatively, croc-clips can be used to connect between the Prong and the BBC micro:bit.

If using the Mi:Power board then additionally connecting P0 means the BBC micro:bit can sound an alarm if the soil becomes too dry. When fitted to the Prong moisture sensor, the micro:bit can be coded via any of the micro:bit editors, such as the Microsoft MakeCode editor.

Note: To ensure that the Prong moisture sensor has a long and fulfilling life, it is better to write your code to perform a moisture check every so often rather than continuously. When the check is performed continuously it promotes rapid erosion of the electrodes.

Features:

Measure soil moisture levels.

Attaches directly to the microbit.

Use in conjunction with the Mi:Power board to provide power and an audible alarm.

Code with any microbit coding editor.

Contents:

1 x Prong Soil Moisture Sensor for microbit.

3 x M3 Hex Nuts.

3 x M3 Countersunk Screws.

Dimensions:

Length: 68mm.

Height: 53mm.

PCB Thickness: 1.6mm.

€5.50