Gender
Male
About
About Me:
Software Engineer & R/C Pilot. i have been flying for about two years. Interested in programming an auto pilot and stabilization system. Using a low level programming environment will be a nice change of pace. My winter build project is a Carden 35% Extra 260.
Please tell us a bit about your UAV interest
waves.ky
Hometown:
Mustang, Oklahoma 73064
Activity Feed
"I think the Wiring environment (wiring/arduino) is pretty cool because its not very intimidating. Its a great teaching platform and very approachable.
I do software engineering in my day job so I have worked in lots of languages and environments.…"
I do software engineering in my day job so I have worked in lots of languages and environments.…"
I finally got my Wiring board form Sparkfun! Wiring is a platform similar to the Arduino but using an AVR atmega128 chip. This chip is clocked at 16Mhz while the Arduino is clocked at 20Mhz. The advantage of the 128 is the increased RAM, ROM & Flash…
"Bad luck guys, A/C sucks. I hope the presentation was well received.
Lesson 3 is a big one. No matter how tempting, don't mess with the software right before its deployed/used/demoed. You will get bit in the 4$$.
Can we see the presentation or the…"
Lesson 3 is a big one. No matter how tempting, don't mess with the software right before its deployed/used/demoed. You will get bit in the 4$$.
Can we see the presentation or the…"
"Good show guys!"
"So just what is going on here?:
return timer0_overflow_count * 64UL * 2UL / (F_CPU / 128000UL);
Here is what I do understand:
The timer overflows once every 256 ticks. It ticks once ever 64 clock cycles. The CPU runs at 20 MHz and that value is…"
return timer0_overflow_count * 64UL * 2UL / (F_CPU / 128000UL);
Here is what I do understand:
The timer overflows once every 256 ticks. It ticks once ever 64 clock cycles. The CPU runs at 20 MHz and that value is…"
We are interested in reading the number of microseconds that a digital pin is set to HIGH. Wiring natively lacks a micros() function to tell us this so we need to write an accurate one.This is the actual implementation of millis() in wiring.c for…
"So are you reading the PPM signal off the Rx now? This is what Paparazzi does. They also dedicate a chip with more power than an Arduino just to do PPM decode and PWM output.
I saw some code you posted that had a function to get the ticks from…"
I saw some code you posted that had a function to get the ticks from…"
"Paparazzi is based on UBlox gen 4 GPS units. They seem to think they are well worth the price. These new Gen5 modules are priced the same as the Gen4 at $99. They support I2C (Two Wire Interface) which could save you a serial port.
"u-blox keeps…"
"u-blox keeps…"
"I ordered a Wiring board and an SD card holder to do some testing.
After thinking it over I would guess that the R/C receiver manufacturers care more about accuracy and latency than execution speed. After all, they only have to drive servos so it…"
After thinking it over I would guess that the R/C receiver manufacturers care more about accuracy and latency than execution speed. After all, they only have to drive servos so it…"
"Cool! i have been looking at this all day and I figured out the Parallel Pulse thing just a little while ago.
Basically you set all servo pins to HIGH and then turn them off at he right time. It should only take 2ms to run as many servos as you…"
Basically you set all servo pins to HIGH and then turn them off at he right time. It should only take 2ms to run as many servos as you…"
"I read at least one good paper on driving servos with the Arduino and they are driven by the digital out pins. It said the PWM pins on the Arduino were basically useless for driving servos because the frequency they ran at was too high.
So is that…"
So is that…"
"If you re going to use a separate board to control servos then I agree that it is irrelevant to the platform choice. Its is another part to add but if it keeps the overall cost and complexity down (because you don't need a faster controller) then…"
"Looking at Wiring vs. the Arduino. Wiring has more RAM, Flash and IO pins which could be really useful. Also they are about to come out with a 'Wiring Mini' thats even smaller than the Arduino and costs roughly the same. That would be a suitable…"
