Modern and science fiction LARP in the UK.

Laser-Tag equipment sellers

With the demise of consumer Laser-Tag equipment members of the UKLTA reverse-engineered the protocol and then expanded it to create our proprietary DOT system.

Some members of the organisation make equipment to satisfy demand from new players or custom weapons for specific events or genres.

Spartan Designs

Phil Higgins of Spartan Designs was responsible for the current generation of our Laser-Tag protocol and still makes short runs of weapons, sensors and electronics for use in your own DIY conversions. Recently these are excellent 3D printed replicas of actual or fictional weapons.

For DIY builds, two styles of board are currently available, along with lens assemblies and other sundries you might need.

TTG board

A small circuit suitable for use where space is at a premium (L31 x W19 x H16.5mm). Can be built to run from either 3-5v or 6-12v power supplies (please specify which upon ordering).

Uses trigger and reload inputs and has outputs for 1x Infra Red and 1x muzzle flash as well as a single LED for ammo status and outputs for a 4- 8 ohm speaker. Circuit makes use of several sounds for output and operational feedback.

Programming can be customised to suit the Laser-Tag blaster you want to build. Please contact Phil with your requirements.

The latest generation of TTG circuit supports 5 different configurations. The circuit will remember the last selected mode and use that one if the selection isn't updated. These are selected at power on by cycling through them using the trigger. Each mode is identified by a sound prompt.

Upon choosing the configuration mode you want, wait a few seconds and the mode will be selected. The circuit will then start a delay timer. This is to stop reset of the circuit bypassing the ammunition timeouts. For normal single damage configurations the timeout is 6 seconds. For configurations that have a special damage component the timeout is 60 seconds.

During the startup timeout the Status led will flash indicating that the circuit is waiting (same as it does when reloading). When the timeout is complete the circuit will play a startup noise and then be ready to operate.

Pulling the trigger will fire the circuit. This could be single shot, burst fire or fully automatic depending on how that configuration has been set up.

When you run out of ammunition the circuit will light up the status led and each time the trigger is operated you will get a suitable sound effect played.

You can reload by operating the reload switch. Reloading can be performed at any point, even when you have ammunition remaining. However if you do that any remaining shots in that magazine are discarded.

Each configuration can be programmed with a different sized magazine and also with a different number of reloads. Operating the Reload switch will play a sound effect. It will also start the reload timer. Reload times depend on magazine capacity. The larger the magazine the longer it takes to reload. The minimum time meets the definition set in the Interclub rules. If you run out of reloads the circuit will play another suitable sound effect and you will be out of ammo. You will need to power cycle the circuit to reset the ammunition remaining. Please wait at least 10 seconds between switching the circuit off and switching it off again. If you would like to change configuration you will also have to power cycle the circuit.

Each configuration can be set with the following settings

There are several different sound effects programmed onto the sound modules the circuit uses. I can set each configuration to use a different sound effect for firing. I generally use the sound most appropriate to the blaster being simulated. So for example a pistol will get a pistol noise. If the configuration was set to do stun damage then it's likely that the zat'nik'atel noise would be selected.

Please be aware that I have some internal guidelines as to allowable configurations. If you asked for 3 damage with 100 shots and unlimited magazine for example then the request would be declined. Basically if it exists as a real world firearm the chances are it would be acceptable or if you are doing some particular sci-fi blaster then its likely to be ok too. The guidelines I use are designed to promote fair play with nothing being exceptionally over powered. In general circuits with more than 1 damage are limited in the amount ammunition they have available. They also tend to be set to fire slower.

TTM board

Slightly larger than the TTG (L50 x W25.5 x H16.5mm)

Can be built to run from either 3-5v or 6-12v power supplies (please specify which upon ordering).

Uses up to 4 inputs (trigger, reload, mode and an optional special/pump/grenade switch). Has 2x IR and 2x muzzle flash outputs as well as a dual LED for ammo status. The 2 IR channels make possible low/high power options in my purpose built blasters or can be used for normal/grenade output configurations for things like Pulse Rifles. Uses a 4-8 ohm speaker. Circuit makes use of several sounds for output and operational feedback.

Programming can be customised to suit the Laser-Tag blaster you want to build. Please contact Phil with your requirements.

The TTM can also be fitted with an optional 4 digit 7 segment display instead of the normal dual LED - please enquire (Not available on the TTG).

Like the TTG the TTM also supports 5 configurations. They are selected in the same manner and circuit operation is essentially the same. There are a few differences though due to the extra hardware available on the TTM. Firstly the Status led can use 2 pins. In normal use these are connected to a bicolour led (usually with red/green colours). This allows the display of Red/Amber/Green for ammunition status. These are set to Green= plenty of ammunition, Red=5 rounds or less and Amber is used to indicate Unlimited. The Status led colour also indicates the amount of Magazines remaining during the reload timeout in a similar manner to ammo.

The TTM also has a mode input. This can switch between 2 different fire modes. Commonly used to select between single shot and burst/auto.

The other big difference on the TTM is that it can support 2 separate IR/Muzzle flash channels. This means the circuit can fire IR channel 1 or IR Channel 2 for each shot. Common uses for this are to simulate a separate shotgun or grenade launcher on your primary weapon, such as a Pulse Rifle. When configured in this way the 4th input is used to load a shell and the next trigger press fires it. This secondary weapon can be set up differently to the main shot and has its own loading and firing sound effects too.

The other common use for it that is getting more and more use is to shoot the blaster in a low power mode. By building the circuit slightly differently with this in mind the 2 IR channels can be wired up to the same IR and Muzzle Flash Led's. Firing in a normal mode will use full power on the IR but firing in low power mode drastically cuts down on the amount of IR produced. This makes use indoors possible. You still have to be cautious but you can shoot inside without hitting everybody including yourself. With a narrow focus lens unit it is possible to target just one person in a row of people.

Each configuration can be set with the following settings

Short Lens Unit

This lens unit (size approx 110mm x 17.5mm ) that makes use of a 16.5mm lens. As used in the PPG and Phaser

Long Lens Unit

This lens unit (size approx 165mm x 17.5mm) also uses a 16.5mm lens but one with a longer focal length. Fitted as standard to the Sword range of blasters and the long barrelled PPG.

Interchangeable Lens Unit

Designed to fit onto 3/4 inch thin wall tube - options include base, short or long lens attachment and 35mm Silencer lens attachment.

Draziw Industries

Under the name Draziw Industries, James Bloodworth makes tools often used or issued by game organisers. These are built to order, contact James for details and prices.


The BDC is a tool to configure Laser-Tag sensors with settings not accessible by pressing the buttons. Typically these are used by game organisers to give 'antagonists' regeneration, large numbers of hits, armour and so on.

PDFThe August 2015 edition of the BDC guide


The SIAB is 'SAMS in a box', an implementation of the long-used UKLTA medical system in hardware which also sets a sensor to 'heal' after a certain time. If you play a medic in one of our games you are likely to be issued with a SIAB. You can also build one yourself.

PDFThe August 2018 edition of the SIAB User Guide

Splinter Faction

Splinter Faction is a group of people who do weapon conversions to order and make calibrated lens units for your own builds.