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Member #6929

Member Since: August 7, 2006

Country: United States

  • In terms of fault tolerance, error recovery, and just about every other aspect of a design, I ask myself: "Does it matter to the customer?"

    Does the customer care how fancy my algorithm is? Does the customer care about some obscure error code, or should I just do something reasonable and keep going? Does the customer really care about a bunch of detailed status messages? Did I leave my fascinating debug code in place that stops a device working and pisses my customer off?

    1. That's what I call a giant chocolate chip Mr. Rebus!
    2. No more fighting. I'll give you a big kiss, and you take that big chip off your shoulder.
  • Same here. I have gotten some nice beefy gear motors from Pololu. They also have drivers, controllers, encoders, etc.

  • Granted, but the only "food safe" part is the tubing. Also, see my comment above about the additional parts and software. I figure the additional parts would only be $30, so you'd still come out ahead. OTOH, there's some value to getting a working setup.

  • I have some experience with this type of pump in prosthetics R&D. I use it in a manikin to deliver fake sweat at a precise rate. This type of pump is also used as a vacuum pump in prosthetic applications. The pump is so simple to build that it hardly seems worth the price quoted here. I don't see much added value in the processor, motor driver, etc. since you can get them for 20 or 30 bucks. Not that hard to calibrate it using an 8 oz. coffee cup, since it's not lab grade anyway.

  • I really like this kit, and the specs look really good for general use.... I ordered one for my lab assistant.

    Looking over the design specs, it looks like it's made for easy modification. I'd probably replace the push buttons with some knobs. I got one of those Nano V3 scopes from Sparkfun to play with, and I never use it because it's too slow and clumsy to navigate through all the menus.

    P.S. About dual channel: The schematics show that most of the guts of the thing are taken up with the single channel circuitry (see the link above). Maybe a cheap way to add a second channel would be to order two of the kits and modify the software to multiplex them onto a single I2C bus LCD somehow.

  • Just ordered this for my birthday present. I wanted a heavy bag, but my wife said I had to get something practical. :)

  • Here's a USB->WiFi adapter based on GS1011M that I found in a quick search. Key thing is that this one has an AT style interface so you could easily connect it to an Arduino-type environment without the need for drivers. http://www.arduino.com.au/Data/USB-WIFI.pdf

  • Agree with VccDood. If the Imp just had the wifi drivers and the serial interface without all the programming/serial numbering/cloud stuff then I'd prefer that for connecting with an Arduino-like environment. Otherwise, I'd just use a wifi shield for prototyping. To go super-compact, I'd be much more inclined to spend $15 to $20 on a micro USB dongle (e.g. http://www.mobilefun.co.uk/usb-wifi-dongle-p11590.htm) and get the stack working than to try something like the Imp. Arduino-ish already has IP and USB connectivity, so it shouldn't be all that hard to get a dongle working. Google "arduino wifi dongle" and you can see folks are already working on it either via USB or Ethernet to the dongle.

  • Here is an online example: http://www.smalltime.com/haiku.html

No public wish lists :(