Hello, I need your help. I am currently working on a project, where I try to take photos of falling objects using a Raspberry Pi. In order to achieve a good image quality I need a decent flashgun or strobe. Here comes the catch, I have some requirements for the flash:

• It should be able to flash 1-2 times a second
• It should be able to trigger it externally with a cable (optimally)
• It should not be locked down to a specific brand like Nikon (since I'm using a Raspberry Pi camera)
• It should be possible to power the flash with a cable
• The flash should be somewhat durable
• Optional: The flash should'nt be to expensive

The flash will be used in a stationary setup, and is expected to run for hours on end, since I want to take quite a lot of photos using my project. I would really appreciate if you could give me some form of recommendations for flashes/strobes that could fit my requirements. If you are'nt sure, if a model fits my requirements, please point me to it anyway. I will then see if it fits for my project.