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Baby Squirrels, FS4, Ham Radio, High Altitude Balloon

Flying Squirrel #4, the Movie

Posted on June 24, 2019

The Flying Squirrel #4 High Altitude Balloon took flight on June 17th, 2019 10:09Am PDT. This movie visualizes the GPS data collected on the flight via a radio link using FT8 telemetry protocol. Flying Squirrel #4 flew to an altitude of 83,936 feet before the balloon burst. Some data was lost during the drop due […]

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Baby Squirrels, FS4, FT8, HAB, High Altitude Balloon, Telemetry schedule

FS4 Telemetry Schedule and Data Format

Posted on June 11, 2019

Flying Squirrel 4 transmits FT8 data on 28.075Mhz  (Normal 10m FT8 Freq + 1kc) Flying Squirrel sends telemetry data on every even minute. The telemetry is broken into four 15 second FT8 transmissions, Type 1 through Type 4. The Type1 message starts at 0 seconds and send a station ID: KJ6FO FS4 HAB Type 2 […]

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Baby Squirrels, Flying Squirrels, FS2, Launch Announcement

FS2 Launch update – May 15th, 2018

Posted on May 15, 2018

Weather for FS2 launch on May 19th 10 AM is looking very good. Light winds and warm weather are predicted. Things can change so stay tuned. Here is a prediction run this morning (May 15th 2018). 73s de Don KJ6FO Please follow and like us:

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Baby Squirrels, Ham Radio

Baby Squirrel – Can we talk (on Ham Radio)?

Posted on December 12, 2017

CQ CQ CQ de KJ6FO If you are Licensed Ham radio operator, we can talk on the air. I run an Allstar node running at my home QTH. This node is accessible from any other Allstar node in the world. You can also connect via EchoLink from anywhere across the globe if you have an […]

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Arduino, Baby Squirrels

Baby Squirrels – Arduino current limitations

Posted on July 15, 2017

I found this helpful diagram on how much current an Arduino can handle on its pins.   Please follow and like us:

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Baby Squirrels, Circuits

Baby Squirrels – A simple transistor switch circuit

Posted on July 15, 2017

Sometimes you need to be able to turn devices on and off from your Arduino.  If the current being drawn is low enough (under 40 Ma MAX, 20Ma recommended) then you can just use the IO pins of the controller to turn the device on and off. The Blink example program does exactly this with […]

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Recent Posts

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