Search found 26 matches

by Arachnivore
Sat Jan 29, 2011 11:55 am
Forum: New Product Ideas
Topic: Adding a GLONASS + GPS module
Replies: 2
Views: 3622

Re: Adding a GLONASS + GPS module

Wow! I've never heard of GLONASS and I used to work for a firm that builds Geo-location systems. Now it makes sense why you would want a receiver with a few dosen channels. GNSS sounds pretty amazing. Do you know what kind of accuracy you can get by using multiple constellations? That chip is really...
by Arachnivore
Tue Jan 25, 2011 2:16 pm
Forum: New Product Ideas
Topic: New PSoCs look real purdy
Replies: 1
Views: 681

Re: New PSoCs look real purdy

Ok, I'll post some of the highlights: ARM Cortex M3 MCU @80 MHz, 256k flash, 64k RAM USB full-speed + other standard peripherals implemented in programable logic 24 "Universal Digital Blocks" (UDBs) each with two PLDs, an 8-bit ALU, and control logic A configurable 8 to 20-bit delta-sigma ADC at up ...
by Arachnivore
Sat Jan 15, 2011 9:37 pm
Forum: New Product Ideas
Topic: New PSoCs look real purdy
Replies: 1
Views: 681

New PSoCs look real purdy

by Arachnivore
Thu Jul 29, 2010 9:37 am
Forum: New Product Ideas
Topic: Open Neural Nets
Replies: 5
Views: 1452

Re: Open Neural Nets

Whenever I talk to other engineers about neural nets, they always point out that neural nets are slow or have never been scaled past pet projects in a research lab. It's true that the field of artificial neural networks (ANNs) has run into several pitfalls, but progress is still being made and I thi...
by Arachnivore
Wed Jul 21, 2010 11:36 am
Forum: New Product Ideas
Topic: Open Neural Nets
Replies: 5
Views: 1452

Open Neural Nets

Can we get the ball rolling on some open neural network stuff? I have a neural net fetish but there aren't many hobbyist tools out there to play with. Introduction: The great thing about neural nets is that instead of programing a new algorithm for each system you want to control, you program one al...
by Arachnivore
Mon Jun 28, 2010 10:00 pm
Forum: New Product Ideas
Topic: Designing the Ultimate IMU
Replies: 37
Views: 13700

Re: Designing the Ultimate IMU

Forget about Kalman filters. This baby needs a neural-net processor (a learning computer). I'm thinking a MCU married to a low cost FPGA. Then it needs a 3-axis accelerometer and a 3-axis gyro for 6-degrees of relative freedom; and 3-axis magnetometer and gps for 6-degrees of absolute freedom (refer...
by Arachnivore
Tue Feb 16, 2010 12:42 pm
Forum: New Product Ideas
Topic: FPGA - Robotic
Replies: 6
Views: 2451

If you want to leverage the arduino community, you could try out one of the AVR soft cores provided for free on OpenCores:

Make sure you're doing more than just emulating an MCU in the FPGA. Otherwise you're not getting your money's worth.
by Arachnivore
Wed Jan 20, 2010 10:03 am
Forum: New Product Ideas
Topic: FPGA - Robotic
Replies: 6
Views: 2451

There's a robot control library at OpenCores , although the status on that project is blank, so it might be incomplete. I'm not sure which Spartan 2 board you're talking about. Sparkfun carries a Spartan 3E board and a Cyclone 2 board, but no Spartan 2 board. At any rate; you probably don't want to ...
by Arachnivore
Sun Jan 17, 2010 11:36 am
Forum: SparkFun Product Questions
Topic: Fabricating mechanical parts
Replies: 3
Views: 606

If you're really ambitious, you could put together a rep-rap machine. I suppose if you're scavenging gears from old RC cars, you might no be ready to sink $400+ into a fabrication device. Since you are scavenging gears, make sure they have the same pitch or else thy won't thread together very well.
by Arachnivore
Fri Jan 15, 2010 8:39 am
Forum: New Product Ideas
Topic: zany idea
Replies: 7
Views: 1571

You could use a Wiimote if you've got one. It might take care of some of the processing for you. I'm not sure, I haven't played around with one. I think you might also be able to modify a cheap web cam to see only the IR spectrum (take out the IR filter and replace it with film that has been exposed...
by Arachnivore
Thu Jan 14, 2010 4:16 pm
Forum: New Product Ideas
Topic: zany idea
Replies: 7
Views: 1571

Yeah, I thought about that too (although i had no idea they could hear up to 64kHz!). It might be easier to put an IR LED or two on the cat's collar and track it with a camera. Then you're no longer in the realm of micro controllers though. Also, it would be harder to make it omni-directional, but I...
by Arachnivore
Thu Jan 14, 2010 2:48 pm
Forum: New Product Ideas
Topic: zany idea
Replies: 7
Views: 1571

I actually did a project similar to this in college (you clap and a laser points at your hands). What you want to make is a microphone array. the cat only needs one chirping transmitter. Measure the time difference of arrival (TDOA) between microphones and solve Appollonius' Tangency Problem where t...
by Arachnivore
Wed Jan 13, 2010 1:24 pm
Forum: New Product Ideas
Topic: USB current display
Replies: 1
Views: 874

Is there any reason why you couldn't just put a 0.1 ohm resistor in series with the 5V line and use a multimeter to measure the voltage across the resistor (multiply by 10 to get current)? that should leave your USB lines relatively clean without the need for a hall effect sensor.
by Arachnivore
Wed Jan 13, 2010 12:08 pm
Forum: SparkFun Site Questions/Comments
Topic: Appease Angry Customers
Replies: 72
Views: 12091

I agree that Sparkfun should appease the angry mob. Host free day round 2. Give away $100k worth of Gerber peas and carrots for all the whiny babies out there. Seriously. It's 100 bucks, guys. Get over it. First of all. $100K is quite a lot of money for a company with less than 80 employees to just ...
by Arachnivore
Tue Jan 12, 2010 7:43 am
Forum: SparkFun Site Questions/Comments
Topic: Spammer List
Replies: 686
Views: 137374

McDaniel http://forum.sparkfun.com/viewtopic.php?t=19166 http://forum.sparkfun.com/viewtopic.php?t=19165 http://forum.sparkfun.com/viewtopic.php?t=19164 http://forum.sparkfun.com/viewtopic.php?t=19163 http://forum.sparkfun.com/viewtopic.php?t=19148 http://forum.sparkfun.com/viewtopic.php?t=19161 htt...