Kitronik Audio Cable for the BBC micro:bit

Sensor:bit is a breakout board based on micro:bit. It has extended all available IO ports on micro:bit, and lead out them in the form of GVS. With this board, we can extend various 3V electric brick modules like LED light, photocell, etc.. On the board, it has integrated a buzzer and an audio jack, which allows you to hear music from the buzzer or with headphones.

FEATURES

Extend most IO ports on micro:bit by GVS pins.

Independently lead out IIC interface. Enable to plug in IIC components like OLED, BME280, etc..

Integrated a buzzer and an audio jack.

Support interface.

Mark out each IO port with silk printing.

This 3V vertical submersible low power water pump is an ideal solution for creating a small indoor water feature or as part of a plant watering system. At the heart of the pump is a 3V DC motor that runs quietly and only draws approximately 100mA.

The pump needs priming before use and should be kept fully submerged during use as it will only pump water not air. Also, it only works in one direction as a pump, you cannot reverse the connections and have it move water in the other direction.

It's 3V, 100mA power requirements are such that you could use a microcontroller with suitable drive capacity to switch it on or off. As the new micro:bit now has 200mA available for powering external devices, this pump can be powered directly by the micro:bit V2.

The micro:bit can only drive 15mA from its pins, so a transistor or FET is required to control it from the pins, either in an on/off capacity, or, with PWM to vary pumping rate. If using the original micro:bit or if the microbit is already controlling other devices, this pump can also be powered and controlled via a motor driver board, or similar.

Note: This pump is not supplied with any tubing.

Features:

Vertical type submersible pump.

Operating power requirements are; 3V and 100mA.

Low noise DC motor.

Can be controlled with a simple on/off switch or microcontroller/motor driver board.

Ideal for small water features or plant watering systems.

A flow rate of 80L/H @ 3V and 100L/H at 4.5V.

Contents:

1 x 3V Vertical Submersible Water Pump.

Dimensions:

Length: 38.5mm.

Width: 23.9mm.

Height: 42.6mm.

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.

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.