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swampdonkeykami last won the day on June 8 2016
swampdonkeykami had the most liked content!
About swampdonkeykami
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Rank
Level 1
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Website URL
http://arduinoforgoodnotevil.blogspot.ca/
Profile Information
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Gender
Male
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Interests
Gold mining, arduino, hydraulics, msp430
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FAAAAACK! Gotta sooper sleuth the Gee Dee passive values. Seriously, it doesn't cost a thing to have them in the schematic.
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I'm putting this together now. BOM is horrible. What values are ALL the resistors? P.S. Why, why why SMT? PITA, no?
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Got an interesting problem with my second kit. Turn on. No display. randomly mash buttons. displays 0000000 for split second, then blank. Check power and pin voltages... 1- 3V 2-7 1.3V 8-13 0.3V 14-15 1.3V 16 3V 17-18 0V 19 0.3V 20 0V I assume I did something wrong like insert LEDs wrong way. Start cutting leads off (hate de-soldering) Bingo. LEDs light up missing a couple segments. LED installed correctly. Faulty/fried bubble module?
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I'm in for a deluxe version. Let me know where to send da moneys.
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CHEAP air cylinder positioning with 43oh and flow meter
swampdonkeykami replied to swampdonkeykami's topic in Projects
*thinking* or we could install a pressure transducer and have the 43oh calculate the volume of air @ X pressure and base all movements on that baseline pressure, then don't need any fancy geometry algorithms for axies! THANKS FOR THE INSPIRATION GUYS!!!!! -
CHEAP air cylinder positioning with 43oh and flow meter
swampdonkeykami replied to swampdonkeykami's topic in Projects
Glad you like! More fun in the works! No, this came out of a gold mining machine. I'm re-purposing for something completely useless. ;-) As for varying loads, yes and no. If you are talking lifts various weight of items, shouldn't make a difference because the cylinder volume is constant. You put in 3 litres of compressed air @ 30psi, the cylinder moves 500mm. You put in 3 litres of compressed air @ 200psi, the cylinder moves 500mm. The trick is, the 43oh needs to return to a known position (full retract, full extend, or limit switch) prior to changing the load. But if the load v -
CHEAP air cylinder positioning with 43oh and flow meter
swampdonkeykami replied to swampdonkeykami's topic in Projects
Now that we know it works, I'm bustin' out more cylinders and joystick controls! :thumbup: -
Hi Guys! I've been toying with an idea, that I didn't think would work, and set up a test jig. Using an air compressor, a solenoid valve, a flow meter and a 43oh I found that we can get a repeatable cylinder position, like +-2.5 mm! The flow meter is measuring the volume of air that we've fed to the cylinder and the 43oh opens or closes a solenoid valve depending on the cylinder position.http://arduinoforgoodnotevil.blogspot.ca/2013/10/accurate-ish-pneumatic-cylinder.html