- Nov 14, 2009
- Rocky Mountains
Please do forward the code and pinouts to meThe Arduino code on the websites I found have errors and are incomplete. I got the Arduino, wrote the code for airspeed, and to display the speed up to 110 kts or 125 mph (limit for the 2 kpa sensor) on three 7-segment LEDs. It's actually pretty accurate! I can forward the code and pinouts if needed.
#include <Esplora.h>I'm using 3461BS LED chip, which comes in different colors, only using the right three digits. The pressure transducer is the common MPXV7002DP . I'm using a small switch to select knots or mph. I prefer knots, but when its set to mph, the decimal points on the chip light up to tell the pilot he's looking at MPH. I'll write down the pinouts later, here's the code:
What might work better is actually just doing like bill did, but outputting via Bluetooth serial, then it's just getting the app builder to add a way to take and display that data.Hi all! This got me thinking. I just bought a Stratux that works wonderfully on ipad. I use aerovie as the nav and backup attitude app. Connected to the Stratux I get a great and very accurate EFIS. However, all airspeed is really GPS Groundspeed. As a back up that is not a problem. It is almost more precise than the gps groundspeed on my Garmin aera 500. Attitude AHRS sensors are muuuuch better. I would say even better than my mechanical gyro of the C172 I rent.
Could it not be a better idea to get those Baro pressure/differential pressure sensors integrated to something like the Stratux and get the whole picture? Stratux receives ADS-B so it would definitely become a turn key solution. Furthermore, new iPhones and iPad are equipped with a baro sensor. Can´t they be all rolled into one to display both sensor dynamic/static pressure airspeed and alt as well as GPS groundspeed? I have NO CLUE of electronics or electrics but would think that half or more has already been done and integrated to Stratux. There is also this new wingbug thing https://www.wingbug.com which mounts out on the wing. But for $950 dollars I'd much better wnat to integrate the above to Stratux and have a whole system for around 300 bucks! For 950 I'd buy the AvMap ultra EFIS
I started playing with the Arduino about a year and a half or so agoGood write-up by Adam Drees on the 3461BS 4-digit, 7 segment LED chip. I chose that chip because the digits were the right size for my needs: https://www.adamdrees.com/tag/3461bs/
The chip uses 12 pins to light up the LEDs. Here are the chip pins (left column) and the pins I connected them to on the Arduino Mega (A/M). I didn’t know anything about Arduino a few months ago, and just ordered the Mega.