Ricardo Affonso
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  • Luiz Fernando
  • Applied Aeronautics
  • Alexandre Mainardi (Nuvem UAV)
  • Felipe Vaz
  • SERGIO TERUEL
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Latest Activity

Marcelo Velasquez Ferreira replied to Ricardo Affonso's discussion Mosaicos e pós-processamento in the group BRAZILIAN GROUP DRONE
"Opa... bom dia, comecei a trabalhar com o photoscan agora tb (testando) e gostaria de saber se vcs tem alguma dica de foto, iluminação, posicionamento..... onde melhore o processamento das imagens para o 3D.  Eu cheguei a tirar…"
Sep 22, 2015
Ricardo Affonso replied to Robby's discussion Solar Powered Drone Project
"well, with 12h days, you probably could make 3 flights max, with a full battery on the start of the day, and 2 full recharges. you never get the max power output of the cells, and on the start and end of the days, unless you have a method to track…"
Feb 9, 2015
Ricardo Affonso replied to Samuel Shao's discussion Heavy Octocopter For Plant Protection
"The CoG could give you trouble, beeing low with the full tank and getting up when the tank depletes. be careful, and test it on both situations with same gains to see what happens, then tune it for the worst case."
Feb 9, 2015
Ricardo Affonso replied to Tamás L. Páll (Tom)'s discussion Maja +APM help needed.
"its snaking around, but the course is the same everytime, it just need some PID adjustments. the gains seems too big, so it overshoots everytime. have you already tried the autotune? what about navl1_period? one more things is the roll to yaw…"
Jan 13, 2015
Ricardo Affonso replied to Michal Rus's discussion Allowed frequencies for UAV in Brazil in the group BRAZILIAN GROUP DRONE
"welcome to Brazil. this crap rules over here."
Oct 8, 2014
Ricardo Affonso replied to Michal Rus's discussion Allowed frequencies for UAV in Brazil in the group BRAZILIAN GROUP DRONE
"first of all, are you going to use it for comercial purposes or just hobby fpv flying? second, do you mind breaking some rules? the fact is, the use of drones is not yet really defined here, some people say its gray area, but it is actually…"
Oct 8, 2014
Ricardo Affonso replied to Christian Stallings's discussion APM / Pixhawk systems with COA aproval
"these guys have a wonderful plane, i talked to them a few weeks ago, and they have their own autopilot, but are also using apm/pixhawk stuff. in their site they claim 60+ COA, maybe you can get in touch with them. http://uasusa.com/#/tempest-50/"
Aug 27, 2014
Ricardo Affonso replied to Luiz Fernando's discussion Projeto VANT para TCC (Ciência da computação) in the group BRAZILIAN GROUP DRONE
"bom, aí você que vai ter que definir qual seu objetivo. multicopteros normalmente são mais práticos, voam em qualquer lugar (inclusive dentro da sala de defesa do tcc), e vários modelos são bem resistentes a…"
Aug 3, 2014
Ricardo Affonso replied to Luiz Fernando's discussion Projeto VANT para TCC (Ciência da computação) in the group BRAZILIAN GROUP DRONE
"Luiz, você já tem alguma experiência com aeromodelismo? caso positivo, asa é uma boa. caso negativo, aconselho um treinador básico e 6 meses de aula de aeromodelismo (com simulador, e instrutor ou algum amigo que…"
Aug 1, 2014
Ricardo Affonso commented on Exmaps's blog post EXmaps - Online log storage releases update
"ah, just one more thing. it would be nice to generate a report for each battery, i got a few ones, and keep a record of how many flights each one has by marking them when i recharge."
Jun 24, 2014
Ricardo Affonso commented on Exmaps's blog post EXmaps - Online log storage releases update
"i also tried, no luck with .tlog, i got the same error. but i tried uploading logs i already had, i´ll try to configure my gps and attitude as described on your guide( http://exmaps.com/guide ), the idea of automatically getting reports…"
Jun 24, 2014
Ricardo Affonso commented on Arthur Benemann's blog post DroidPlanner 2.3.3 - New version, new features
"Arthur, not sure if the best place to ask is here, but please, add a tab with a huge GPS clock. this way, after connected, its easy to take a picture of the time on the tablet (with seconds too, please!) and see the time diference from the camera,…"
May 19, 2014
Ricardo Affonso replied to Essam's discussion Small UAV with Near InfraRed Camera and GPS (Autopilot)
"theres a simple option. just carry two cameras, one RGB and one NIR-modified. then, after the flight you get 2 data sets. process them separately, and after everything is done, just put the two maps together.  if you don´t wish to make a…"
Jan 9, 2014
Splat01 commented on Ricardo Affonso's blog post Emergency parachute trigger options
"Were any tests done when the plane was in a stall or free fall? Tripping the parachute right after killing the throttle seems like an artificial situation."
Dec 19, 2013
Ricardo Affonso commented on Ricardo Affonso's blog post Emergency parachute trigger options
"this video is not mine, its from Team Echelon FPV. Randy, a set of sensors that actually detect a huge problem and decide to trigger the parachute would be awesome, but for now i just want a way to set a servo. in the future i'll use a…"
Dec 19, 2013

Developer
Randy commented on Ricardo Affonso's blog post Emergency parachute trigger options
"Nice camera work. By the way, there's a discussion going on for the multicopters related to parachutes here. I suspect we will make a parachute library so it can be shared between copters and planes but I'd only be able to write the…"
Dec 18, 2013

Profile Information

About Me:
Electrical engineering student, RC experience since 2000, aerial photography experience since 2007, FPV and multirotors since 2010, APM2.0 user since 2012.
Please tell us a bit about your UAV interest
ortophoto generation for agricultural use.
Hometown:
Valinhos-SP, Brazil

Ricardo Affonso's Blog

Emergency parachute trigger options

Posted on December 18, 2013 at 11:30am 6 Comments

I´m finally finishing the setup of a new airframe, wich now has a parachute system released by a servo (almost like this):

http://www.youtube.com/watch?v=XSkEhjy5PLY

 

Now comes the tricky part: how to setup a good way of activating the parachute from…

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