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Solderless Female to Female Jumper Leads in a set of 40
This set of coloured female to female jumper leads can be used together or peeled apart into smaller sets or single leads. They are great for prototyping with boards like Arduinos and Raspberry Pi.
With 10 different colours and 4 of each colour, it's easy to keep track for quick fault finding.
Colours: Red, Orange, Yellow, Green, Blue, Grey, Purple, Brown, Black and White
5V relay module for Arduino and other microcontroller projects
This module has 4 x 5V changover relays with the option of using them through optocouplers. There is an LED for each relay to indicate when it has been activated.
The relay allows the low current microprocessor outputs to switch higher currents and voltages. With the optocouplers it fully isolates the live side of the relays from your microprocessor, this will require a seperate 5V supply to power the relays.
Trigger voltage : 5VDC
Supply Voltage : 5VDC (only needed if using optoisolators)
AC Switch ratings : 250V 10A
DC Switch ratings : 30V 10A
Combustible gas and smoke sensor module for Arduino and other microcontroller projects
This module has a sensitive gas sensor that can measure smoke and various combustible gases. It can measure compunds such as LPG, Propane, Methane and smoke. The sensor outputs a varying voltage on the analogue pin depending on the level of gases present and it has a comparator to give you a digital output when the level of combustible gases reaches a certain level. This can be set with the built-in potentiometer.
Please note, this sensor needs to warm up for a couple of minutes before it will give a stable reading.
Voltage : 5VDC
Current : 150mA
Sensitivity : 300 to 10000ppm