Hi,
I am a noob to the forum and somewhat electronics in general. I can solder components together and reasonably figure things out. I am wanting to create something that I can use in my lab to expedite my projects. I will explain what I am wanting to do and I hope someone would have advice on how to get started.
In a broad description: I wash tissue in a small petri dish with a saline solution 6 times for 10mins a cycle. By hand I place liquid into the petri dish, about 2-3 ml, suck it out and replace. I would like to build a rig that would do this for me.
What I have thought is that I need a power controlled regulator that will dispense liquid (i am thinking like a stop-cock that would be motored). Gravity will be used to dispense the liquid and thus valve would just impede the flow. This would need to be open for variable amount of time (i guess some sort of pot or trim pot could be used to adjust for amount of volume). So I could flip on a button and this valve would open for a few seconds then close for 10mins before opening again. It would repeat this cycle until I turn it off.
I plan to place a hole in the bottom of the petri dish and thus liquid can flow out, this will also use gravity to evaucate the contents, but will need a valve at the bottom. Essentially this would be same circuit as above but offset in time so that the tissue in the perti dish would not ever become completely dry.
I presume that this would require use of two timers, some motorized valve for the most basic set-up. I am not experienced enough to even know where to start other than conceptually visualizing how this would work.
Any help on this would be greatly appreciated.
Thanks,
Chris
I am a noob to the forum and somewhat electronics in general. I can solder components together and reasonably figure things out. I am wanting to create something that I can use in my lab to expedite my projects. I will explain what I am wanting to do and I hope someone would have advice on how to get started.
In a broad description: I wash tissue in a small petri dish with a saline solution 6 times for 10mins a cycle. By hand I place liquid into the petri dish, about 2-3 ml, suck it out and replace. I would like to build a rig that would do this for me.
What I have thought is that I need a power controlled regulator that will dispense liquid (i am thinking like a stop-cock that would be motored). Gravity will be used to dispense the liquid and thus valve would just impede the flow. This would need to be open for variable amount of time (i guess some sort of pot or trim pot could be used to adjust for amount of volume). So I could flip on a button and this valve would open for a few seconds then close for 10mins before opening again. It would repeat this cycle until I turn it off.
I plan to place a hole in the bottom of the petri dish and thus liquid can flow out, this will also use gravity to evaucate the contents, but will need a valve at the bottom. Essentially this would be same circuit as above but offset in time so that the tissue in the perti dish would not ever become completely dry.
I presume that this would require use of two timers, some motorized valve for the most basic set-up. I am not experienced enough to even know where to start other than conceptually visualizing how this would work.
Any help on this would be greatly appreciated.
Thanks,
Chris