"Hi Roberto,
Great work,I would love to start development on the STM32F4. I had a seminar a few weeks ago about this STM32f4 and got the discoveryboard with it. I was impressed by the presentations about the performance and had the same idea that you…"
Alexander's Discussions
SD746 3D Gyro+ 3D ACC working with APM
Started Aug 16, 2011 0 Replies 0 Likes
Hi Guys, I have been busy with testing the SD746, or lets say get it to output some data so the AMP can work with it.The SD746 combines a 3D accelerometer with a 3D gyroscope and signal conditioning…Continue
Alexander's Page
Latest Activity
Alexander commented on Roberto Navoni's blog post Multipilot32F4 Project Update: board and VRIDE PRO with VR OS 0.0.1 Available for developer
Lorentz commented on Alexander's blog post Look what came out of my reflow oven!"@Alexander
Great! That's exactly what I was looking for.
Thanks also for the offer. In case, I will contact you but I'm still in the early phases of the project.
Thanks again and let us know how the SD746 works.
"
Alexander commented on Alexander's blog post Look what came out of my reflow oven!"@Mike,
The problem with the max7456 based OSDs is the powerdisipation of this chip. But on rembizi OSD is also a linear voltage regulator which is heating up the board even more. What I did is making a small rembizi compatible board without the…"
Lorentz commented on Alexander's blog post Look what came out of my reflow oven!"Alexander,
great accomplishment ! That SD746 stuff looks promising.
I had a look at web site of Sensor Dynamics but it looks like they only sell samples to "entrepreneurs".
Is there any other way to get one of the SD746 for simple mortals…"
Michael Pursifull commented on Alexander's blog post Look what came out of my reflow oven!"I also have Rembizi, but I am very concerned about heat; I have not discussed it yet. Too much heat, surely that is electrical inefficiency? I am talking outside of my experience. I continue to use Rembizi OSD, but worries me. I like the product…"
Kirill commented on Alexander's blog post Look what came out of my reflow oven!"Nicely done! I see it looks very similar to APM with minor changes. How much time did it take you from the very beginning to ready board?"
Alexander commented on Alexander's blog post Look what came out of my reflow oven!"Farooq, there is not much to port, it is based on the apm+oilpan I did a the port for the sd746. I have to do the airspeed sensor and extra servo outputs and the three open drain outputs. But I start first with testing on the basic functions. Maybe…"
Alexander commented on Alexander's blog post Look what came out of my reflow oven!"Mike, I will not going to produce these board in high quantities maybe I will make a few boards if there is interest or sell some bare pcbs so people can assemble them self, but due to the fine pitch and qfn packages it is not an easy job to do. I…"
Farooq Niaz commented on Alexander's blog post Look what came out of my reflow oven!"1. Do you intend to sell these boards (if yes only PCBs or fully stuffed)
2. What about the firmware porting?"
Alexander commented on Alexander's blog post Look what came out of my reflow oven!"Andre, due to my job it's easy to get all the necessary components, especially I'm in close contact and do direct business with Atmel. But you can buy all the components from Farnell, Digikey and for the gyro you can buy them from a German…"
Michael Pursifull commented on Alexander's blog post Look what came out of my reflow oven!"I see a number of well thought out concepts here, perhaps lessons learned from working with ArduPilotMega/IMU?
What do you plan to do as far as software? Are you thinking of producing these boards, or of publishing the layout for others to make?"
Alexander commented on Alexander's blog post Look what came out of my reflow oven!"farooq, that is exactly what i had in mint. I have a Octo with mikrokopter electronics that I want to replace with this autopilot in the future. So having two extra servo outputs is always useful...but first is the axn floater that will get this…"
Andre Lochner commented on Alexander's blog post Look what came out of my reflow oven!"Very nicely done ! How easy was it to source components ? I live in SA and here it is extremely difficult to source components unless you order large quantities, and you have to wait a long time. "
Farooq Niaz commented on Alexander's blog post Look what came out of my reflow oven!"8 + 2 Servo outputs means we can have octo with camera Stabiliztion ?"
Alexander commented on Alexander's blog post Look what came out of my reflow oven!"Patrick, thanks for the compliment, indeed there is no USB converter on my boards, i did this on purpose. Now i can use this uart for ohter things like for instance osd. And THE other big reasion is that i didn't want to have stuff on my boards…"
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Alexander's Blog
Look what came out of my reflow oven!
Posted on September 17, 2011 at 8:30am 18 Comments 2 Likes
Hi guys,
Here I want to show you my new autopilot hardware which I worked on the past weeks.
The layout and the connections of the boards are chosen for my own convenience.
So airspeed sensor, receiver input, GPS, LEDs and I2C connections are at the front of the…
Continue Preview of my wireless modem development
Posted on November 27, 2010 at 7:00am 11 Comments 0 Likes
Here is a preview of my long range wireless modem.
It's based on a Radiocrafts 868Mhz module (RC1180HP) with 450mW RF output power and good receiver…
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