May 19, 2010
I started playing with electronics in the mid-1960s, and with computers shortly after Neil Armstrong took “one small step”. I got a degree in CS in 1980, and started working then as an engineer.
News - It's Arduino Day!
Thank you! I had been curious. It seems to me that it wasn’t the “feeding frenzy” it was last year.
As I previously noted, I’m still working on the stash from last year, plus the Pro Minis I’ve ordered since, so didn’t order as much stuff this year. BTW, if I had not had the Pro Minis on hand after last year’s Arduino Day, I very well might have gone in a different direction with the projects that got me to order more. (While I’m on Pro Minis, I appreciate that Adafruit is also carrying them. I’d really like SF to reciprocate and add Trinkets, as they are good for some projects.)
News - It's Arduino Day!
about 3 days ago
Methinks you’re not going to see quite the feeding frenzy that last year’s Arduino Day brought, but that’s probably OK.
Unfortunately you’re out of the SMD Uno R3, and that’s the one Arduino I would have ordered more of. I did order a couple of shields, though. I might have ordered a few more accessories (e.g., the breadboard and the Arduino and Breadboard Holder), but they weren’t discounted. I can leave those till later when I’m trying to get to free shipping. I did get there by adding a few other items off my personal wish list (like the 5mm PTH NeoPixels for my “Santa Hat” project).
Anyway, thanks, Spark Fun!
about 4 days ago
FWIW, I looked at the specified website. They’re based in Bulgaria, and this raises a few issues for customers in the US trying to order directly from them: Some credit card companies will refuse charges from Bulgaria (thanks to some fraud), though it’s much more prevalent for them to refuse charges for things going TO Bulgaria. Some credit cards (but not all) ding you for charges from outside the U.S. (I found this out the hard way when I ordered some parts from a company in Canada.) And then there’s the issue of shipping charges and customs.
One way to bypass these, of course, is to use U.S. distributors. Both Mouser and Digi-Key are listed on the Olimex web site as “Distributors”, and both have stock of a lot of items, but NOT these, at least not yet.
Can I give this thing a fixed IP? (I’ve looked through the Instructables, and only found it as a question without an answer.) My network has DHCP turned off (long story), so I have to manually assign each device an IP address.
BTW, off hand it looks like a good match for a 3V Arduino Pro Mini.
I presume that this does NOT come with FCC approval? This means that it’s OK for “prototype” (pronounce “a few around your house”) usage, but if you include it in something you’re (“reader you”, not SF) are going to sell, you’ll have more hassles.
BTW, this is probably one of the big reasons it’s so cheap. If it had the regulatory approvals, it would likely cost more like $12, at a guess. At the moment, I don’t need it, so am not willing to research, but I’d be surprised if there isn’t already a functionally comparable module that has FCC/CE/etc. approvals.
Adafruit.com carries an adapter product 2102 that should make this “breadboard friendly”. The adapter is 2x5, but that’s OK. It looks like it also comes as a socket and a header, but for this you’d just use the socket. Price is a whopping $0.95.
Maybe we could get SF to carry this gadget? Or maybe the 2x4 version from the OEM?
about 4 days ago
Reminds me of the time, maybe 20 years ago, when I took a class in OOP, and as a “demo” we wrote a program to simulate a (no sensor) traffic signal. I was first playing with PEEL (and electrically erasable PLA), and “simulated” the 60 or so line program with just two ICs (the other being a 555 to generate a roughly 1 Hz clock).
Thanks for the quick response, Byron! The thought had crossed my mind for a rather simplistic robot that has a sensor for when it encounters an obstacle, it backs up (and turns?), then when the obstacle is no longer triggering the sensor, it returns to going forward. (Yeah, I first saw such at the likes of Radio Shack many years ago, but this device would make it simple to do.)
It would be nice to be able to some how “read out” the PWM values that the CPU is actually using. I can see a use for this in that you could use it as a “calibration harness” for a more sophisticated robot – unplug the servo from the “normal” controller, temporarily plug it into a WIG-13118 and adjust the range to get the “end points”, read out the values to put into the “normal” controller, move the servo back to the normal controller, and repeat for the next servo.
Yeah, you could guesstimate the values from the pot positions, but a digital readout would be more accurate.
At the moment, I don’t have the immediate need for it, but it’s something that crossed my mind as I looked at it. (I rather suspect that there could be something with using the ISP as a SPI bus, but it’s likely going to take an upgrade to the program.)
Under the idea that “the only stupid question is the one that isn’t asked”: What happens when you hook one of these to a continuous rotation servo?
No public wish lists :(
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