Usage
This mod adds the Heartbeat Sensor weapon attachment from Call of Duty: Modern Warfare 2 (2009) as a weapon gadget in PAYDAY 2. It functions in much the same way that the original did- see the video for a demonstration:
<div class"spoiler">
Spoiler!
Know what kind of heat's just around the corner.Never again be caught flat-footed in a fight.
VR Footage, shared by VxWolf:
https://i.imgur.com/UmVBfgB.gifv
Stats:
* -1 Concealment
* -3 Stability
The Heartbeat Sensor sweeps the surrounding 25-meter radius area for heartbeats and displays their locations on the readout screen.
Friendly IFF signals are denoted in blue; neutral/unregistered or potentially hostile signals will appear in white. (This includes civilians, so watch your fire!)
Applicable Weapons
This attachment is generally only available for primary-slot Assault Rifles, Sniper Rifles, or Shotguns. (As a notable exception, the Piglet is also included, because why not?)
The reason that this gadget is not universally available is that I have to manually set the position of the HBS gadget for each weapon. If I didn't, the gadget would likely be somewhere on the gun that is not visible to the user, rendering it useless.
This mod works on the following PAYDAY 2 weapons:
- Eagle Heavy Rifle
- Union 7.62 Rifle
- CAR-4 Rifle
- AK Rifle
- AK 7.62 Rifle
- Golden AK 7.62 Rifle
- AMR-16 Rifle
- UAR Rifle
- JP36 Rifle
- Bootleg Rifle
- Queen's Wrath Rifle
- M308 Rifle
- Valkyria Rifle
- Gecko 7.62 Rifle
- Little Friend 7.62 Rifle
- Falcon 7.62 Rifle
- Gewehr 3 Rifle
- DesertFox Sniper Rifle
- Thanatos Sniper Rifle
- IZHMA 12G Shotgun
- Steakout 12G Shotgun
- Piglet Grenade Launcher
This mod work on the following PAYDAY 2 user-created add-on weapons:
- Remington ACR https://modworkshop.net/mod/19917
- FN MK 17 MOD 0 https://modworkshop.net/mod/26539
Please note that you can only apply the Heartbeat Sensor attachment to these weapons when they have a left-side optics mount/rail. Certain attachments may be incompatible- make sure that the game does not tell you that you have incompatible attachments for these weapons.
Credits:
- The concept and execution of this weapon attachment originated in Activision/Treyarch's game Call of Duty: Modern Warfare 2 (2009).
- The model used in this mod was uploaded by Asagrid.
- The model and materials were ported to a Diesel-friendly format by Alcat101.
- The scripted functionality, sensor readout screen bitmaps, in-game descriptions, and mod page images were created by Offyerrocker.
Support and Known Issues
Here is a list of known issues with this mod:
- Heist environment bloom settings affect the screen. This means that the screen may be unreadably bright on certain heists, such as Yacht Heist, or merely very difficult to read, such as on Heat Street.
- Light sources and certain objects may render through the screen.
- Detected heartbeats "blips" may rarely linger for a few seconds longer than they should (cause unknown)
- SWAT Turrets will not show up on the Heartbeat Sensor readout, owing to the fact that they do not possess heartbeats. This is intentional.
- Zombie faction enemies (as may be encountered on Cursed Kill Room) still show up on the Heartbeat Sensor readout, even though they don't have heartbeats. This is not intentional.
Planned features:
- Flipping the gadget open or closed when activating it
- Back mesh behind the screen to prevent bug #2, and allow a workaround for bug #1
Questions? Comments? Feedback? Bug reports? Feel free to post it here, or contact me on Discord.
I don't normally make weapon attachment mods- this is my first- so feedback is especially welcome.


I stopped using this a while ago due to getting kicked for the cheater tag, glad to see it's been fixed.
On another note, could you try making a binoculars mod, something like the in-game zoom in Far Cry, War thunder, Crysis, or other games. Kinda like this.
Sounds interesting. The shaders to simulate thermal vision or such might be beyond my capabilities, but the HUD element + FoV zoom is perfectly doable by itself. How are you envisioning this being activated? Just a keybind?
@Offyerrocker Yeah, activated by keybind, maybe synced with an animation like Casing mode coughing? There's a comparable mod for Gmod with some models here, also in lua, if you can use that. Perhaps try just the HUD element, and if that works then a separate version with the animations, called Immersive Binoculars or the like, would be cool. And yeah, thermal vision would be unnecessary considering how useful this would be on it's own.
@Offyerrocker Is everything going well? Have you used an animation for the zoom, or model? If there's a way I could help with this project, I'd be glad to. Also, I've found another mod which may or may not be a good model for this, https://www.nexusmods.com/skyrim/mods/30473/?tab=description, and another one which I think likely is. https://modworkshop.net/mod/20475 Thanks.
@Blasteraxe I haven't had time to even start it lately. Even if I was given a model or animation, I don't have the technical know-how to convert that type of asset into the format that PAYDAY 2 uses. If it was already converted, that might be a different story, but on the whole, my skillset is best suited to scripting and implementation. Also, giving it an actual animation/model would be a lot more work, since then there would need to be a lot of code in place to account for interactions between other player states and actions (having a weapon out, ADSing, etc). Not impossible, but a heck of a lot of work compared to just a HUD element/overlay + FoV zoom and maybe a sound effect.
@Offyerrocker Alright, I figured that part would get complicated. Initially less so than this heartbeat sensor, but I stand corrected there. I'll think on this some more, and look for some better models, or someone to port them. When you have the time, I'd still like to see the HUD mod, no rush obviously. Thanks for the information by the way👍.
@Blasteraxe Yeah, the only reason I was able to complete the HBS mod was because Alcat was kind enough to find and convert the assets (and generate a lot of the BeardLib mod xml required).
Anyway, if/when I get around to that zoom mod, I'll let you know. At the absolute least I can probably make a really quick and dirty one that just zooms the FOV when you hold the keybind or something, but of course whenever possible I always like to make the best thing possible.