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andydasmith
Pulcino
United Kingdom
59 Posts |
 Posted - 21/02/2020 : 12:49:46
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Hi, I've posted a shakey phone video of the current state of development of this project. The vario uses readily available,low-cost parts and was designed to complement LK8000 running on Kobo readers. It incorporates a stepper motor, MS5611 pressure transducer and ADXL345 accelerometer. These are driven by an Arduino processor running open-source software.
It provides speech audio warnings generated by LK8000 (eg airspace, turn-point) and Flarm warnings when connected to a Flarm or T-beam running SoftRF. It's been developed and flown over the past two years in the UK and Australia in a Ventus 2cxt. PCB and case 3d printer files are available. Total cost of the parts is about 40 Euros. All the info required to participate in the project or build a unit will be published on my blog and github.
Blog: https://cotswold-club-vario.blogspot.com/2019/06/a-low-cost-diy-speech-synthesis.html
Video: https://www.youtube.com/watch?v=oU0J3tjPbks
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Edited by - andydasmith on 21/02/2020 13:50:18 |
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andydasmith
Pulcino
United Kingdom
59 Posts |
Posted - 24/07/2020 : 15:33:26
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The Cotswold Vario project has progressed. There is now a fully functional Vario/Speed Director available incorporating the Teensy 3.2 processor. The system retains the speech functionality developed to supplement Kobo sytems and is now multi-tasking so that audio and speech functions are maintained simultaneously with the vario stepper motor indication. It is designed to be very simple to operate, a middle push button cycles through the menu options with the top button increasing the menu value and the bottom decreasing. It contains XCSoar polars and the following can be configured: Glider type, MacReady, Kalman time constant, Cruise airspeed trip, Thermal airspeed trip, Speed to fly audio deadband, Bugs, Ballast. In cruise mode the vario displays airmass movement (netto). Both basic vario and speed director share a common pcb and case and can be operated stand-alone. Video: https://www.youtube.com/watch?v=TLILrTkEUwQ.
The audio is controlled by a simple potentiometer which can be mounted lower right or left. PCB, Arduino software and case cad files are available at https://cotswold-club-vario.blogspot.com/2019/06/a-low-cost-diy-speech-synthesis.html. |
Edited by - andydasmith on 24/07/2020 16:03:26 |
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Cotswold Opensource Speech Vario