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Wow! Your braille cell looks promising! Did you also "drill" the holes with the laser engraver? Yes you are right my tests often do not give the expected results and the reason of the failure most often remains unclear to me. So now i focus on using the normal latches even if they use more air. Let's see how many of them i can "power". I have started to design a pcb of a shift register and binary counter using up to 4 master slave fluidic flip flops made by using 8 latches and 4inverters.
I tried the two circuits on the left. The valves leak some air indeed but with the bottom left circuit the state remains stored indefinitely at the cost of a slight air consumption. A problem occured though when trying to cascade several of these latches. As vacuum is transfered from one latch to the following one e.g. when trying to build a master slave flip flop, the state of the first latch is lost.
What kind of circuit would be needed to periodically or on request refreshing the state of such latches??
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Thank you for the suggestion. I will certainly test these new schemes. Meanwile you can find a video of my testing of 6 independent fluidic latches made according to your previous scheme here.
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I have connected the chip as suggested by you to make a gated latch and ..yes it works ! great ! The two states "vacuum" and "atmospheric" pressure are stored indeed. I had made latches previously but only by using an external resistor or as a custom designed gated latch fluidic chip..however your scheme is a much more elegant solution. Thanks. The challenge now will be to see how many of such latches I can connect together to make useful circuits such as shift registers or counters. I have tried this previously but as the number and length of connection tubes increases the circuit "consumes" more air and eventually switching is relatively slow. However there is a clever way to scale down the size of the valves and resistors as described in this work http...see more »I have connected the chip as suggested by you to make a gated latch and ..yes it works ! great ! The two states "vacuum" and "atmospheric" pressure are stored indeed. I had made latches previously but only by using an external resistor or as a custom designed gated latch fluidic chip..however your scheme is a much more elegant solution. Thanks. The challenge now will be to see how many of such latches I can connect together to make useful circuits such as shift registers or counters. I have tried this previously but as the number and length of connection tubes increases the circuit "consumes" more air and eventually switching is relatively slow. However there is a clever way to scale down the size of the valves and resistors as described in this work https://www.youtube.com/watch?v=IKfNbzCGHf0 which was also made by CNC milling and laser hole drilling. Also I think I can use evensmaller tygon connection tubes (0.01 inch inner diameter instead of 0.02 inch) I just need to scale down also the conical tube connections.
There is actually a mistake in your tube routing scheme. A should open on the inverted B "output channel" and inverted A should switch on the B "output channel". So the correct tube routing scheme is as in the picture below. When connected in this way the circuit works indeed as a XOR gate with very few tranistors ! wow ! Thanks for the suggestion.
I was just now having a more carefull look at your proposed scheme and now i understand. Great idea! I will definitely try tomorrow. Thanks a lot for your interest and great insight! I will let you know the result.
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and here is the fluidic NAND gate assembled following your scheme. Works fine as well ! I have assembled the two circuits "on the fly" just in few minutes for you. Please excuse the image quality. I hope this convinces you that you should really try to make these circuits..you'll have a lot of fun indeed ! In any case if you have further curiosities (simple circuits please) I may assemble them rapidly and show you the result
I have just rapidly tested your proposed NOR gate using the 5 inverter chip which for convenience I have sticked onto a LEGO brick. Similarly connectors have been sticked on LEGO bricks so that I can assemble easily any circuit. It works fine indeed as you can see
Yes. You can do it of course. In addition you need to make a separate fluidic resistor or you can directly design the whole flip flop onto a single chip as in the paper you found.
You need very small tubing as the one i pointed out in the instructions otherwise you need to scale up all the circuits snd chips. You can do it but you will need a more powerful vacuum source
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You are right.I am curious to see this fabricated by those guys. For myself it is a little bit too much work.
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