I have finished my Arduino based pulse width modulated (PWM) hot wire cutter controller. It allows precise USB or analog temperature control of a hot wire of length from 10cm to 2m for use with manual cutters or CNC based cutter. The PSU is extermal…Continue
Just wanted to inform you all that I have sucessfully modded and flown William Premerlani's UDB2 board (red board) with the invensys gryo board designed by Russell Duffy. The AP / stab code was MatrixPilot r466 and the planes were a Fun Jet and an Easystar clone (higher wingloading and with ailerons). …
I have attached an Excel sheet that I made with the equations needed to design a barometric altitude sensor.
For lower altitudes and for small altitude deltas, one can assume that there is a linear relationship between pressure and altitude. Please see the attached Excel sheet for more details.
The SCP1000 pressure sensor seems like a very good candidate for a pressure sensor:…
Here are some photos of my new pulse width modulated (PWM) hotwire foam cutter prototype.
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I use it for cutting foam of all types. Instead of moving the wire, I move the object to be cut. In this way it is possible to make straight and 90 degree cuts referenced to the base plate. I have drilled a hole in the baseplate for the hot wire to run…
I got the telemetry and videolink azimut / elevation antenna tracker prototype up and running the other day. Here is a video of it (without antennas) when it receives ASCII commands from the test software running on my lab PC.
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720 degree azimut rotation range
I have now written some initial telemetry code that extracts data from the internal data structures of the r,p,y code running on the UAV DevBoard. The code generates ASCII telemetry frames.
I will later make a binary telemetry frame format for better efficiency. If you have suggestions to the format, let me know. It would be nice to be compatible with the Ardustation.
What I would like to integrate in my UAV system in…
I have now sucessfully sent rmat data from William Premierlanis green UAV dev board to the PC and displayed it with the pyton code developed by Brian Wolfe. I tailored the datagrams from the UAV Dev board to fit Brians format so I didnt have to recode the Python code.
I use a FTDI board attached to the spare serial port of the UAV Dev board. I send data as ints and…