mcbridejc
Water Drop Timing Electronics
I did kind of a lazy job on these setup shots, and wish they were better, but I wanted to post something about the setup. This is the behind the scenes electronics. I'm using an STM32 microcontroller to drive the timing, and the custom protoboad is just some MOSFETs and connectors to drive the output signals to the valve, camera, and flash. I've written the software so that an application on the laptop defines and triggers the firing sequence, so it is quick to edit delays, valve open times, etc. Also, I've been tethering my D90 using DCamCapture so that the photos are downloaded for preview right away. A 12V lead acid battery is used to power the solenoid valve.
Water Drop Timing Electronics
I did kind of a lazy job on these setup shots, and wish they were better, but I wanted to post something about the setup. This is the behind the scenes electronics. I'm using an STM32 microcontroller to drive the timing, and the custom protoboad is just some MOSFETs and connectors to drive the output signals to the valve, camera, and flash. I've written the software so that an application on the laptop defines and triggers the firing sequence, so it is quick to edit delays, valve open times, etc. Also, I've been tethering my D90 using DCamCapture so that the photos are downloaded for preview right away. A 12V lead acid battery is used to power the solenoid valve.