Velleman Adjustable Timer Solder Kit

Price match guranteePrice match guarantee

We can price match this item if found elsewhere. Call us on:

0333 400 9500

Quoting product code: VT27E


Our delivery options

Free standard delivery (orders over £10)
3-5 working days 9am-5pm
Standard delivery (orders under £10)
3-5 working days 9am-5pm
Next day delivery
Mon - Fri, order by 6pm
From £5.99
Specific day/time delivery
Choose am / pm OR before 9am / 10.30am
From £5.99
Same day delivery with Shutl
Choose a 1 hour time slot
Prices vary

Specific options for this product are available in the checkout. Read more delivery information

About this product


  • Control a flashing light, slide projector or modelling applications
  • Set a time interval between 2.5 and 60 seconds with a relay output
  • Easy and fun to solder with 15 parts

Product overview

• Control a flashing light, slide projector or modelling applications
• Set a time interval between 2.5 and 60 seconds with a relay output
• Easy and fun to solder with 15 parts
• Requires a 12V DC power supply (not included)

What can do with this kit?
Create a timed pulse with this interval timer (manufacturer’s code MK111). Use to control a flashing light, slide projector control, in model creation or video /photo single frame shooting. Set a pause time for 2.5 to 60 seconds and a pulse (on) time of between 0.5 and 5 seconds. With a 40mm x 85mm this kit can fit almost anywhere. This 15 piece kit is suitable for all levels from beginners to experts.

What can I learn from this signal generator kit?
Practise soldering and learn about electronics and circuits with this signal generator kit. It uses resistors, capacitors, potentiometers, a relay and a microchip, and will help you learn how to connect a circuit. The two potentiometer controls the pause and pulse time of the circuit, and the relay triggers the on/off output. The relay can connect to a 24V 3A output. With screw terminal connections for your output and input, this kit is easy to connect to. This kit requires a soldering iron and solder, and may require wire cutters.

How easy is this kit to solder?
This is a great kit those looking to improve their soldering skills, or wanting to expand an existing project with an adjustable timer kit. Once you’ve put the kit together you may want to create an enclosure (not included) for the kit to protect the electronics taking care not to block the inputs, outputs or potentiometers. This kit requires a DC 12V battery (not included).

Rated 4 out of 5 by from Nice Little Circuit - Poor Title This item is called MK111 Adjustable Timer Kit with Relay. The packaging describes it as an Interval Timer. However I think it would be better to call it an Intermittent Timer - as (as I understand it) once the circuit triggers the relay then this circuit will continue to turn on and off, at adjustable rates, what you have attached. I was under the mistaken impression that this would delay that output (a variable amount) and the output could vary in length of, and this would happen the once. I should have done more RESEARCH before ordering, as I wanted a circuit that would activate something for five seconds after a button was pressed for a split second, and this kit does not do that. It was a good kit, only two MINOR niggles with it some of the points you have to soldier are very close together (closer than any other kit I've done before) and the pause and pulse components were the same colour - Pulse is marked 0 and Pause is marked with a tiny Z - I had to get a magnify glass out and check the photo to find this out.
Date published: 2015-05-17
Rated 5 out of 5 by from Great kit for beginners For the project I have planned this little board is perfect. It was easy to assemble and I found the instructions clear to follow. I had fun messing around with the pulse and pause rate, making lights flash and motors stop and start. Bought a second one as I can see it coming in handy in future.
Date published: 2017-02-10
  • y_2018, m_1, d_22, h_8
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.6
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_2
  • loc_en_GB, sid_VT27E, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_maplin-en_gb


Product Specifications

Soldering Required:


Dimensions & Weight





I assume there is an external switch to start the timing relay to close a contact & if so does the relay open after the set time even if the external switch stays closed & resets again when the switch opens. We need a 9VDC timer as this

Asked by: Johnny
The only details we have for the item can be found in the link below
Answered by: Dominic
Date published: 2017-08-07

Hi,Ive built one & its set for 30sec intervals but when connected to a 4 ohm coil,that reduces to 6-7 seconds,any ideas?

Asked by: Ernie
Connecting it shouldn't affect it's timing. I've ordered one from stock to check.
Answered by: DaveB
Date published: 2017-07-27

is this a repeating cyclic function and do you do the same device with adjustment 0-10 mins

Asked by: mick
Sorry but neither of these functionalities are supported by the device.
Answered by: Les
Date published: 2017-05-18

In the mk111 kit (not constructed) there are Two Trim pot both black, there are no identifying marks or numbers that i can see ,one should be 1meg (rv1 on circuit diagram) and 1 47k (rv2 on circuit diagram) . how do i Identify them.

Asked by: cliff
They used to be stamped to show which was which, but it seems this has now been removed, so we would advise testing resistance with a multimeter.
Answered by: Russell
Date published: 2015-12-11

a) Do I need to "press a button" or does the unit go straight into switching sequence when power is applied. And (b) when the sequence starts does it start with a "pause" or a "pulse"?

Asked by: watfordih
The unit is activated as soon as power is applied, there is no button. The second question is dependent on what the board is currently set at, as these variables can be changed.
Answered by: Brad
Date published: 2015-12-06

How can you tell which trim pot is pause & which is pulse? The only writing on them is Y & B. They are both the same colour? The LED just stays on permanantly. Thanks Chris

Asked by: Clarky
The image on the manual we have on the web shows the layout of the kit when built and has a line coming from it over to the function.
Answered by: Dominic
Date published: 2015-11-23

Does this require a button to be pressed to start the timer or does it start automatically power is attached? I need a timer that starts as soon as power is attached and doesn't require a button start.

Asked by: nefarious
I am sorry but the item in question does not support use in your intended application.
Answered by: Russell
Date published: 2017-03-21

Can it just switch power without the timer function

Asked by: Dublindevil
I am sorry but the item in question does not support use in your intended application.
Answered by: Dominic
Date published: 2015-10-06
  • y_2018, m_1, d_22, h_8CST
  • bvseo_bulk, prod_bvqa, vn_bulk_2.0.6
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_17
  • loc_en_GB, sid_VT27E, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_maplin-en_gb