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.
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.
I have solar panel on a motorhome unit and would like to use this relay to switch in a trickle charge to the engine start batteries once the leasure battery is charged up. To do this I want the relay to operate at 13.8 volts please can you advise how to modify the circuit to allow upto 14volts both as power supply and signal . I have tried the link on previous question i.e. 2144-relay-board.html but nothing was found. Thanks for help
Posted byon Friday, 8 April 2016
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.
Thanks for the prompt reply. Yes we had come to the same conclusion, but wondered if adding your timer kit No:2111 to the input of the relay board kit would give us a delay on. If so could you help us with the correct way to connect the two kits please? Graham
Posted byon Thursday, 21 January 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.
Thanks for the prompt reply. I’m using the invert function and the time delay function. This gives me delay off. Is it possible to have a delay on and delay off? The block diagram, page 2 doesn’t give us this information. Graham
Posted byon Thursday, 14 January 2016
Unfortunately you aren’t able to delay on then wait and delay off with this kit.
The relay kit gives me an adjustable delay off, is it possible to also have a delay on. Possible with another kit on the input? Graham
Posted byon Wednesday, 13 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.
Thank you for your prompt reply to my question (Your question: Please can you tell me, if I was to replace the LED1 and R3 with relay, what voltage or coil resistance should I use? Also what changes should I make to run with a supply voltage of 12 volts dc, please? Graham Answer: Although it would be technically possible to use this kit, we do sell a relay board kit which would be more suitable for what you plan on using the kit for, https://www.kitronik.co.uk/2144-relay-board.html) If I purchase this kit and build the Automatic greenhouse plant watering system in your example, will I be able to have the LDR activating the relay with light rather activated with dark? Thank you. Graham
Posted byon Friday, 18 December 2015
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.
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