AVR Barometric Altimeter
The project is a plug-in daughterboard that converts a stock AVR Butterfly demo board into a barometric altimeter with one-meter resolution named Monarch. The major enhancements from ATmega169-based system including barometric sensing of air pressure, 10–110 mbar absolute range; Barometric altimeter, 1 meter resolution, >16K meters max; Digital temperature sensing; R/C (radio control) servo pulse decoding; Software controlled On/Off output for flexible switching of external devices; External battery operation (support for up to two power sources); Low battery detection; Voltage measurements extended to 35VDC.
The project, designed by Thomas Black, is used for barometric sensing of air pressure, digital temperature sensing, and RC servo pulse decoding. The software written in C with WinAVR GCC compiler. To install the Monarch software you can use the Butterfly Bootloader or the JTAG method.
Logic Analyzer
Project Detail and Documentation
circuitcellar.com
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12v altimeter, altimeter circuit
