Gender
Male
About
Location
Wood Dale, IL
About Me:
I am a software engineer by profession am interested in electronics, machining, robotics and RC. I restore vintage test equipment, use my lathe and mill for projects, make aircraft models and tinker with the development of microcontroller based devices. I grew up in Australia but now live in the US Midwest.
Hometown:
Chicago
Activity Feed
"I doubt whether making a Z sensor would infringe FMA's patent on the basic process of using the IR senors for aircraft stabilization. Making a knockoff entire system almost certainly would violate a patent.
Digikey sells the device, but at a high…"
Digikey sells the device, but at a high…"
"Check out this item on Ebay - a $10 foam aircraft which makes the cost of mistakes low.
Crash Special/Newbie Trainer Airplane 3 in 1 Foam Kit
Of course this is just the airframe structure, but that is what breaks when the ground whacks your…"
Crash Special/Newbie Trainer Airplane 3 in 1 Foam Kit
Of course this is just the airframe structure, but that is what breaks when the ground whacks your…"
"I also have been looking at a downlink. I have resurrected an old 27MHz RC unit as a development platform because it has the "sticks" (although not very good ones).
I am at the stage of defining a comms protocol, and believe that I should use…"
I am at the stage of defining a comms protocol, and believe that I should use…"
"Yes, you can split the RS242 serial signal from the GPS and drive more than one device. Just use a Y cable.
Just be careful to keep the cable less than about 100 feet long or much shorter if you want to run at a high baud rate."
Just be careful to keep the cable less than about 100 feet long or much shorter if you want to run at a high baud rate."
"FMA has its IR heads for sales for $42 and as I recall free shipping. Digikey has the devices listed for $22 in small qties. Buying the FMA head and modifying, cannabalizing or using as-is is the logical way to go."
"For Otto. A simple case. Assume three key words, "dog", "cat and "bird". The order keyword table is then -
cat sy_cat
bird sy_bird
dog sy_dog
You have a scalar type declared to define the symbols (tokens) sy_cat etc.
where the second field is the…"
cat sy_cat
bird sy_bird
dog sy_dog
You have a scalar type declared to define the symbols (tokens) sy_cat etc.
where the second field is the…"
"I am a programmer who spent many years writing compilers and similar products requiring efficient parsers. A very successful parser is hand coded and tokenizes the input using a binary search of ordered tables of keywords. By converting to atomic…"
