SeanReynoldsCS

Member Since: February 7, 2008

Country: United States

Profile

Programming Languages

C, C#, Java, ObjectiveC, C++

Universities

Washington University Saint Louis Concordia University Seward Nebraska

Websites

www.sean-reynolds.com www.seanreynolds.net

Publications

WashUAV

  • Product SEN-10955 | about a year ago

    Can you Offer Variations of this with different I2C Addresses? It would be great to be able to read several of these at once. I see there are provisions for handling two variations, but I’d like a couple more.

    It would be simple if you would mark them 1A,1C,1E and give a different versions. then the with the SDA line make them shift to 1B, 1D, 1F.

    That would make it easy enough to chain 6 together for more complicated solutions using single I2C lines.

    Thank you, -Sean Reynolds

  • Product SEN-11207 | about 2 years ago

    Will this sensor register a small pressure size, say from the end of a ball point pen? Or will this sensor only register large distributed forces?

  • Product SEN-09376 | about 2 years ago

    I’m having trouble getting this sensor to register small touches. It registers if I squeeze the entire surface with a flat object, but not if I just squeeze a part of it with two fingers.

    It basically works if I squeeze all of the surface, but it does not register if I only squeeze a small point on the surface really hard.

    I’m using a 10k resistor. Should I drop that down? I’m using a pull down wiring setup as described in the first section of the guide.

    Thoughts??

  • Product DEV-10615 | about 2 years ago

    Yeah I bought a second one because of an issue like this. I tried changing the switch voltage to 7v for the servo pins by removing the switch and putting a voltage regulator in its place.

    The second one I took extra precaution to try and isolate the voltage, I reinforced the power and ground lines on the servo pins… But… I accidentally left the voltage switch in tact which likely caused a problem. This time, I kept it to 5v… but I smelled a little smoke.

    After poking around a bit, I realized the pull up resistors. Which means the chip is grounding the signal lines to produce it’s servo signal. I’m not sure if this is good for heavier duty servos or not. I’m not sure how much current the “SIGNAL” line draws for a servo…

    I’m weary about ordering a third just to bust it too… I’m thinking about just making one that kinda does what I was trying to do, but just uses the arduino’s Digital IO lines instead…

    I need to drive 12+ servos now. Mine are higher current as well. I tried the pololu, but the examples really sucked and it only does 8.

    Any bright ideas?

  • Product DEV-10615 | about 2 years ago

    Does anyone know what the Max current is for the PWM?

    I have great performance with 2 “big” servos, but when I add a third servo they start acting really funny… I’ve tested two servo’s on many pins, so it’s not a signal issue.

    The only thing I can think it might be is the Current. I’m driving some: http://servocity.com/html/hs-7980th_servo.html Servos… Unfortunately they are not updated with current requirements. Though I would expect them to be similar to: http://servocity.com/html/hsr-5990tg_servo.html servos at around 360mA each.

    Any ideas about the limitations here? I’m running the source through the Ethernet Arduino.

    The next thing to try would be to reinforce the traces on the power rail for the servo’s and then plug the servo rail in directly to the source with my voltage regulator.

    Any Thoughts??

  • Product GPS-08785 | about 4 years ago

    Does this have I2C?? I dont see it anywhere.

  • Product BOB-08745 | about 4 years ago

    I’d really like to use this to Power a 3.3v circuit.
    I’m guessing it will do that just fine, but is there some kinda current limit on this I should be aware of?
    Everything on the page talks about communications but I really just care about power.
    Would this work for that too?

No public wish lists :(