This is a versatile relay board kit that can easily be configured via jumpers and trimmer potentiometers to do a range of tasks.
Most sensor and switches can be connected to the input of the board and the trigger level set for the input device. This can be inverted if required, then there is the option to feed this straight to the relay or a timer of up to 25 minutes can be used. Irrespective of the state of the invert jumper whenever the sense LED goes from off to on the timer restarts.#
The board can run off any voltage from 4.5 to 6 volts.
The output cans switch DC or mains.
This datasheet details what the board does and how to use it along with some worked examples. A more detailed set of information including the build instructions & how to configure the kit can also be downloaded.
WARNING: Using mains electricity can be dangerous and should only be attempted by qualified people.
This kit includes:
- 3 x 100Kohm resistors
- 3 x 220ohm resistors
- 1 x 47Kohm resistors
- 1 x 1Mohmpotentiometer
- 1 x 10Mohm potentiometer
- 2 x 1N4001 diodes
- 2 x 5mm red LEDs
- 1 x 100uF capacitors, electrolytic
- 1 x 4.7uF capacitors, electrolytic
- 1 x 2N7000 n-channel FET
- 2 x 2 way terminal blocks
- 1 x 3 way terminal blocks
- 1 x LM324 operational amplifier IC
- 1 x 14 pin IC holder
- 2 x 3 way pinstrip
- 2 x Jumpers
- 1 x Relay
- 1 x Relay board PCB
PCB dimensions: 86.5mm x 49mm.
This kit is supplied as a pack of parts and requires soldering.
Teachers can order a sample of this kit (one per school) here. You will need to select the kit from a list of all the sample kits; the stock code for this kit is 2144.
Note: this service is only offered to schools for evaluation purposes only.
This kit is designed and manufactured in the UK by Kitronik.
Hi Steve, Thank you for your patience while we looked into this. The relay board would be perfect for this job, though it might be a little fiddly to get exactly 12 seconds as it can do up to 30 minutes. The output relay has a common connection and then a normally open and a normally closed connections. If the normally closed connection is used (along with the common) connection this will be normally closed and go open circuit or off for the 12 second period. The solenoid circuit is simply 3 items, the 9V supply, the solenoid and the relay (common & normally closed connections). Any switch or sensor can then be connected to the input on the relay board to trigger the timer.Posted byon Friday, 6 January 2017
To be able to switch at the required point you would need to use a micro controller to ensure you switch at the precise point and also an accurate way of measuring the battery charge level. Unfortunately we don’t stock any items which could be used to accurately measure the charge of the battery.Posted byon Friday, 8 April 2016
The easiest way to do this would be to us a microcontroller. You would then program this to delay on for a period of time and then delay off for a period of time. The kit you mentioned couldn’t be used.Posted byon Thursday, 21 January 2016
Unfortunately you aren’t able to delay on then wait and delay off with this kit.Posted byon Thursday, 14 January 2016
You would need to use the invert function on the relay board to do this. All the information for using the invert function can be found in the notes for the product,https://www.kitronik.co.uk/pdf/2144_Relay_board_kit_teach_notes_V1_0.pdf. You would need to look at the block diagram, page 2, Using the relay information and drawing, page 3 and Testing the PCB, page 7.Posted byon Wednesday, 13 January 2016
You would be able to use this kit build the automatic greenhouse plant watering system and then use the invert function on the board to alter when circuit it triggered. All the information for using the invert function can be found in the notes for the product, https://www.kitronik.co.uk/pdf/2144_Relay_board_kit_teach_notes_V1_0.pdf. You would need to look at the block diagram, page 2, Using the relay information and drawing, page 3 and Testing the PCB, page 7.Posted byon Friday, 18 December 2015
Excl. VAT: £6.75 Incl. VAT: £8.10
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