The UK's Finest Independent Forum for Shooters and Gun Owners. Est 2010.

Supporting all legal firearm owners, collectors, enthusiasts, shooters and competitors by promoting and encouraging legitimate gun ownership and use in the UK through unity, advocacy and discussion.
It is currently Sun Jun 16, 2019 5:33 pm

All times are UTC


Forum rules


Should your post be in Grumpy Old Men? This area is for general shooting related posts only please.



Post new topic Reply to topic  [ 10 posts ] 
Author Message
PostPosted: Wed Apr 17, 2019 2:07 pm 
Offline
Site Supporter Since 2015
User avatar

Joined: Fri Nov 05, 2010 8:27 pm
Posts: 22864
Location: The Lincolnshire Wolds, UK
Home club or Range: North Coates Butts UK. Grove Small Arms, Barton Road UK. Ulfborg Skyttecenter DK. BASC Trade Member
I am considering a bell target for myself for practising here in the workshop. I want it to look like a proper original version so steel plate and box however with a modern twist:

Two LEDS, one green showing ready to shoot and one red if the 'bell' is rung.
An audible output such as a buzzer or even a WAV file to replace the bell
A remote control to reset from green to red for the next shot if required.

Is this a Raspberry Pi candidate or a simple circuit project, bearing in mind I am crap at electronic design and I equally would like to keep costs down.

Thoughts anyone?

_________________
/d

Du lytter aldrig til de ord jeg siger. Du ser mig kun for det tøj jeg har paa ...

Shed Journal
Binbrook UK Live Weather


Top
 Profile Send private message  
 
PostPosted: Wed Apr 17, 2019 2:34 pm 
Offline
Site Supporter Since 2015

Joined: Wed Aug 31, 2011 7:05 pm
Posts: 1186
Interesting project - Could be done with a hinged plate and a micro switch to momentarily sound a buzzer/LED but you would need a transistor/capacitor circuit to set some sort of delay so buzzer sounds for half a second or so.

Could certainly be done with a Ras Pi, although I've never used one. Could be done with an Arduino with a bit of thought, they're as cheap as chips, you could set your sound/lights on delay to whatever you want.

You could detect your shot with a microphone.

_________________
TARGETMASTER
an altogether better trickler
www.targetmasteruk.com


Top
 Profile Send private message  
 
PostPosted: Wed Apr 17, 2019 2:40 pm 
Offline

Joined: Sat Jul 23, 2016 9:50 pm
Posts: 83
Home club or Range: Invicta Bristol, Frome and District PC
I considered doing this (though I've yet to get round to it, using one of the plug in accelerometer modules for the raspberry pi.

Stick the module to the back of a hanging steel plate, and hopefully the accelleration caused by an impact will supply an output.


Top
 Profile Send private message  
 
PostPosted: Wed Apr 17, 2019 2:51 pm 
Offline
Site Supporter Since 2015
User avatar

Joined: Fri Nov 05, 2010 8:27 pm
Posts: 22864
Location: The Lincolnshire Wolds, UK
Home club or Range: North Coates Butts UK. Grove Small Arms, Barton Road UK. Ulfborg Skyttecenter DK. BASC Trade Member
An accelerometer is a nice idea however the .177 pellet is going to be striking at anything up to around 10-11ft lbs energy which is enough to sting a bit so I do wonder how long the printed circuit would last.

Arduino is an alternative I had not considered.

_________________
/d

Du lytter aldrig til de ord jeg siger. Du ser mig kun for det tøj jeg har paa ...

Shed Journal
Binbrook UK Live Weather


Top
 Profile Send private message  
 
PostPosted: Wed Apr 17, 2019 2:59 pm 
Offline
Site Admin
User avatar

Joined: Sat Nov 06, 2010 4:57 am
Posts: 17748
Location: Sutherland and Co Durham
Home club or Range: The Highlands of Scotland. Cycling Proficiency 1964. Felton & District rifle club. HBSA full voting member. Durham Constabulary Gun Club Catterick. Teesdale Pistol and Rifle club. St Giles Yarners Durham.
"An audible output such as a buzzer or even a WAV file to replace the bell"

That is just so wrong on every level.

Why make a "not a bell target"! wallhead

Just because you can doesn't mean you should, is nothing sacred from digital destruction?

_________________
Image

Come on Bambi get some

Imperial Good Metric Bad
Analogue Good Digital Bad

Reunite Gondwanaland

For fine firearms and requisites visit

http://www.pukkabundhooks.com/


Top
 Profile Send private message  
 
PostPosted: Wed Apr 17, 2019 3:09 pm 
Offline

Joined: Sat Jul 23, 2016 9:50 pm
Posts: 83
Home club or Range: Invicta Bristol, Frome and District PC
Ovenpaa wrote:
An accelerometer is a nice idea however the .177 pellet is going to be striking at anything up to around 10-11ft lbs energy which is enough to sting a bit so I do wonder how long the printed circuit would last.

Arduino is an alternative I had not considered.



If its behind a suitably sized lump of steel, it will be fine, the physics means the g-forces experianced by a 200gram lump of steel when struck by a 0.5gram pellet shouldn't be too excessive (I did the maths a while ago for .22LR and a ~2Kg plate and it was well within the limits of the cheap one I'd found which i think was 60 or 80g.) Think of it as lorry vs smartcar.. the lorry often won't notice the collision.


Top
 Profile Send private message  
 
PostPosted: Sat Apr 20, 2019 7:35 am 
Offline
Site Supporter Since 2015
User avatar

Joined: Fri Nov 05, 2010 8:27 pm
Posts: 22864
Location: The Lincolnshire Wolds, UK
Home club or Range: North Coates Butts UK. Grove Small Arms, Barton Road UK. Ulfborg Skyttecenter DK. BASC Trade Member
Well that is an Arduino Uno R3 clone (Elegoo) ordered and a fairly random selection of sensors to detect the impact, plus some LEDs and a buzzer as an output.

The potential issue is going to be isolating the striker from everything else so 5.1 hits are detected and those to the target plate ignored. This design has an LED light bar underneath so a hit is lit up and will reflect down and back onto the rear plate, this will show for 5 seconds along with the buzzer. Sensing is via a swinging plate at the back, isolated by studs and springs and will have either a tilt sensor or a Piezo device.

Right now it has cost me a couple of hours of thought/design and under twenty quid for the Arduino stuff.

Many thanks to 1066 for providing inspiration :)

Attachment:
Box.PNG
Box.PNG [ 204.23 KiB | Viewed 221 times ]

_________________
/d

Du lytter aldrig til de ord jeg siger. Du ser mig kun for det tøj jeg har paa ...

Shed Journal
Binbrook UK Live Weather


Top
 Profile Send private message  
 
PostPosted: Sat Apr 20, 2019 8:37 am 
Offline
Site Supporter Since 2015

Joined: Wed Aug 31, 2011 7:05 pm
Posts: 1186
:) You could incorporate a musical doorbell sounder - you could then switch it to play Jingle Bells at Christmas.

_________________
TARGETMASTER
an altogether better trickler
www.targetmasteruk.com


Top
 Profile Send private message  
 
PostPosted: Sat Apr 20, 2019 1:34 pm 
Offline
Site Supporter Since 2018
User avatar

Joined: Tue Sep 15, 2015 8:48 am
Posts: 1356
Home club or Range: NRA Bisley
I just checked out my remote doorbell push.........a suitable steel disc over the plastic button with a steel surround over the plastic body of the thing, and Bob's your mothers brother..............

But I have to say, I'm with Dromia on this one................

Pete

_________________
"Tantum religio potuit suadere malorum" Lucretius


Top
 Profile Send private message  
 
PostPosted: Sat Apr 20, 2019 5:33 pm 
Offline
Site Supporter Since 2015
User avatar

Joined: Fri Nov 05, 2010 8:27 pm
Posts: 22864
Location: The Lincolnshire Wolds, UK
Home club or Range: North Coates Butts UK. Grove Small Arms, Barton Road UK. Ulfborg Skyttecenter DK. BASC Trade Member
Ah, but this is far more interesting :)

Well everything arrived, plugged into the PC, it found the correct comms port instantly, I sent the few lines of code needed and that was it, done, tested and finished. Next job is to add to the code and make it far more complex for the sake of it....

_________________
/d

Du lytter aldrig til de ord jeg siger. Du ser mig kun for det tøj jeg har paa ...

Shed Journal
Binbrook UK Live Weather


Top
 Profile Send private message  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 10 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group