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Male


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Santa Clara, CA


About Me:

Enginear in the Bay Area!


Activity Feed

Todd Berk commented on Roberto Navoni's blog post What IDE Do you prefer for Multipilot32 - Ardupilot32 ? Arduino like Framework vs CooCox for Arm MicroController .
"I like this project a lot, I'm a huge fan of STM32. I think the real question here is programming language not IDE. Java based or portable C code. If you use Java based it limits functionality as these don't support DMA and multitasking which will…"
Jan 25, 2011
Todd Berk left a comment for Sergey
"Hi Sergey,
I've gotten your messages, I've not ignored you. My new job has halted progress on my projects, but I would love to share some information to help you out. I will reply via email this weekend at some point with more info. Thanks for being…"
Sep 21, 2009
Todd Berk commented on Chris Anderson's blog post NASA Ames UAV field trip! (Sept 2)
"I'm in the Bay Area, please add me to the waiting list!
Thanks,
-Todd"
Aug 20, 2009
Todd Berk commented on Jordi Muñoz's blog post AttoPilot IR Sensors Now Available!
"Are these sensor designs open source as with everything else? I would be interested to see the schematic of how they are designed. You say we can make our own, and provide a link to digikey, I would like to see the schematics if all possible. Also,…"
Jul 14, 2009
Todd Berk replied to Tom in NOVA's discussion Brushless Motor RPM Sensor
"See my implementation of a BLDC RPM sensor here: BLDC Hall Effect Sensor. The sensor simply uses at least one magnet (I use 4 to get higher update rate) and a hall switch (about $.40 on digikey).

-Todd"
Jul 2, 2009
Todd Berk commented on jlcortex's blog post Simple way to use Google Earth as ground station.
"Im interested in this as well, is there a way to interface either TCP socket or API (and java?) with Google Earth?"
Jun 28, 2009
Todd Berk commented on Chris Anderson's blog post New 9DOF IMU--$400-$500. Looks good
"200 Hertz for 9 degrees of freedom + filtering + DCM / Quaternion calculations is more than sufficient for anything I can think of, since the data is already filtered you need to take that into account.

(AHRS) Attitude Heading Reference System is…"
Jun 22, 2009
Todd Berk commented on Xander's blog post Motion Plus: Even Better Than Expected! (3 axis gyro for $20)
"I believe the documentation / protocol you point to is over the wireless bluetooth (I don't see anything related to I2C adresses / registers and motionplus), has there been anything done towards listening on the I2C, and getting the data straight…"
Jun 18, 2009
Todd Berk replied to Eric Arnal Fort's discussion How to stabilize a tri rotor
"You may want to check out my project which I've documented here: TresCopter and stabilization concepts: Sensing the Gravity Vector."
Jun 15, 2009
Todd Berk commented on Howard Gordon's blog post ST Micro adds multi-axis gyros
"Available now for sampling (likely only OEM's), Q3 for mass production."
Jun 10, 2009
Todd Berk commented on Bill R's blog post Crossing the Atlantic
"I had heard about this and was curious. Thanks for reminding me and pointing this out."
May 31, 2009
Todd Berk commented on Mitch's blog post New InvenSense IMU-on-a-chip
"Hmm... Apparently I2C / SPI can read analog voltages since the accelerometers don't seem to be connected to ADC's like the external gyros in their block diagram."
May 29, 2009
Todd Berk commented on Jordi Muñoz's blog post Wiring up uBlox! (Only for PRO's)
"Let me add before a flame war breaks out - why it is better than the recommended Ardupilot EM-406A or the excellent LS20031, or the new Venus GPS?

Also, could someone explain the swiss made and "crummy asian module", i.e. uBlox 5?"
May 27, 2009
Todd Berk commented on Jordi Muñoz's blog post Wiring up uBlox! (Only for PRO's)
"I'm curious, could you elaborate why ublox is "the best GPS ever"? I'm not up to date on specific GPS units."
May 27, 2009
Todd Berk commented on Brian Wolfe's blog post Pic32 Autopilot Progress.
"Also, what differential pressure sensor are you using?"
May 25, 2009
Todd Berk commented on Brian Wolfe's blog post Pic32 Autopilot Progress.
"I think you could definitely clean the pressure data up a lot using a moving average filter, thanks for pointing out the BMP085 to me, looks like a good simple cheap sensor.

IDG500 is showing about .8 deg/sec RMS drift rate from what I see,…"
May 25, 2009
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