ELECTRONIC ACCESSORIES

This Lite-On LTR-4206 Phototransistor is a fully RoHS compliant through hole component. This component has been used in our Inventors Kit (from V1.7) for the BBC microbit and replaced the LDR from previous versions. The phototransistor is also much more sensitive and precise than the LDR that it replaced.

There are several different types of phototransistor on the market that are calibrated for certain wavelength bands, such as infrared. The LTR-4206 Phototransistor, however, has been calibrated for visible light and its conductivity is directly affected by the level of ambient light that falls on it. They can also be used as a replacement in circuits for similarly rated LDRs, including circuits featuring voltage dividers such as night lights.

The LTR-4206 Phototransistor has been lensed for high light sensitivity and has been constructed from plastic to ensure that it also offers very good value for the money. They are supplied as a pack of 10.

Features:

Lensed for high light sensitivity.

Low cost plastic package.

Supplied as a 10 pack.

They can be used as an alternative to LDRs.

The flat side denotes the collector. The non flat side denotes the emitter, and the light level falling on the lens determines the base voltage.

RoHS compliant

Contains:

10 x LTR-4206 Phototransistors.

Dimensions:

Package Length: 6mm.

Pitch: 2.54mm.

Diameter: 4mm.

Suitable for 2016, 2020, 2025 and 2032 type coin cells

Low profile for high density packaging

Ideal for memory back up applications

Clearly marked polarity (+)

Viewable solder tail assures reliable joint inspection

Compatible with vacuum and mechanical pick and place machines

Safe for soldering and reflow operations

This simple yet effective Grove buzzer module is a standard board mounted piezo sounder. It can be added to a digital output and will emit a tone when the output is high. It can also be attached to an analogue pulse width modulation (PWM) output and can generate various tones and effects. It has an operating voltage of between 3.3V - 5V and the board is fitted with a standard Grove connector.

Features:

Add sound to your Grove projects with this plug and play module.

A piezo buzzer module that can used with both digital and analogue outputs.

It has an operating voltage of between 3.3V - 5V.

The board featured a standard Grove connector.

Length: 24mm, width: 20mm, height: 9.8mm

Requires:

A Grove compatible interface.

A Grove compatible connector cable.

A miniature PCB Mount Piezo Buzzer. Requires external drive circuit to produce sound.

Voltage: 1-30V DC.

Current: 2 mA.

Dimensions: 17 dia, 8 high.

This item is contained in the Inventors kit so is a handy replacement part for that kit.

This is a 4 pack of wires that are pre-terminated with an alligator (crocodile) clip on one end and a hookup pigtail (male jumper connector) on the other. Alligator clips are a staple part for any workbench and with these cables you will be able to easily incorporate those clips into a breadboard, development platform, or anything else that you would normally be able to attach a male jumper connector to.

Each Alligator Clip with Pigtail cable has a wire length of 30cm (that’s a little less than 1ft) and a male pin that easily inserts into a standard 0.1" connector. Each pack consists of two red cables and two black cables.

These connector wires can also be used to connect a BBC microbit to a prototyping board as an alternative to an edge connector.

Features:

Wires with a croc clip on one end and a male jumper cable connector (pigtail) on the other.

Enables you to connect a BBC microbit to a prototyping board as an alternative to using an edge connector.

Contents:

2 x Red alligator to male jumper connector leads.

2 x Black alligator to male jumper connector leads.

Dimensions:

Length: 30cm.

4xAA Covered Battery Holder with built-in on/off power switch and leads. Supplied with 150mm colour coded flying leads. Features a sliding cover for easy access to battery compartment. Case is hard plastic and is resistant to sudden impacts and vibrations. Ideal in any project kit requiring AA battery power.

Note: this product does not have the JST connector to connect to the micro:bit

Features:

On/off power switch.

Holds 4 x AA batteries.

Sliding case for easy access.

150mm colour coded flying leads

Case resistant to sudden impacts and vibrations.

Contents:

1 x 4xAA Covered Battery Holder with Switch and Leads.

Dimensions:

Length: 68mm.

Width: 65mm.

Height: 19mm.

Compatible with:

Raspberry Pi Pico

Micro:Bit

2 x AA Battery Cage with leads, with 150mm colour coded flying leads. This battery cage houses two AA batteries and is barely bigger than the batteries it is designed to hold. This makes it a suitable choice for the smaller projects when a discrete and easy to hide battery cage is what is called for.

It also features colour coded 150mm flying leads, making for easy integration into your projects.The battery cage can easily be soldered directly to a board or connected to your project via terminal blocks.

Features:

Small discreet size.

150mm colour coded flying leads.

The leads are suitable for soldered connections.

The leads are suitable for terminal block connections.

Contains:

1 x 2 AA Battery Cage with 150mm colour coded flying leads.

Dimensions:

Leads: 150mm

This 90RPM in-line geared TT hobby motor is a great cost-effective solution for adding some movement to your buggy/robot builds. It can be used with our matching wheels and with our motor driver boards, such as our Motor Driver Board for Raspberry Pi Pico and the Compact Motor Driver Board for the BBC micro:bit, to name just two. Note: when using a microcontroller, do not drive these motors directly with the microcontroller, always use them in conjunction with a motor driver board.

Despite their low price point, these brightly coloured 120:1 motors are quite durable and are likely to last through multiple builds with ease.

Although there is a gearbox between the motor and the shaft, there are no rotary encoders. When connected to an appropriate motor driver, like the two listed above, you get forwards/backwards/stop. Simple yet effective. With 2 motors connected to a motor driver, you can also have directional control by turning off one motor and not the other. As is sometimes the case with servos and motors, there can be some small RPM differences between motors which can be overcome when coding, a little trial end error and the odd pause is usually all it takes.

These hobby motors have an operating voltage of between 3V and 6V, with 4.5V being nominal. This makes them suitable for powering with batteries. At 4.5V, they have a speed of 90RPM no-load and 72RPM at load. Torque at the nominal 4.5V is 0.3Kg/cm and they have a stall torque rating of 1.4Kg/cm. See Datasheet for more information.

Note:When using a microcontroller, do not attempt to drive these motors directly with the microcontroller, always use them in conjunction with a motor driver board.

Features:

A cost-effective movement solution for your buggy/robot builds.

Use in conjunction with a microcontroller, motor driver board, and wheels.

A simple yet durable design with a ratio of 120:1.

They are rated for an operating voltage of between 3V and 6v, with 4.5V being nominal.

They can be powered with batteries.

At 4.5V, they have a speed of 90RPM no-load and 72RPM at load.

Torque at the nominal 4.5V is 0.3Kg/cm and they have a stall torque rating of 1.4Kg/cm

Decoratively coloured!

Contents:

1 x In-Line Geared TT Hobby Motor.

Dimensions:

Length: 64.2mm.

Width: 22.5mm.

Height: 18.8mm.

Compatible with:

Raspberry Pi Pico

Micro:Bit