HMR3100
SENSOR PRODUCTS
Solid State Electronics Center
•
www.magneticsensors.com
(800) 323-8295
Page 1
Digital Compass Solution
User’s Guide
Страница 1: ...HMR3100 SENSOR PRODUCTS Solid State Electronics Center www magneticsensors com 800 323 8295 Page 1 HMR3100 Digital Compass Solution User s Guide ...
Страница 2: ...urrent Normal Mode Average Sleep Mode Calibration 0 1 6 1 0 2 7 3 0 5 1 17 3 mA µA mA Digital Interface USART USART 9600 N 8 1 2400 9600 19200 Baud Update Continuous or Polled 2 20 Hz Connector 8 Pin Physical Dimensions Circuit Board Assembly 19 x 19 x 4 5 mm Weight 1 5 grams Environment Temperature Operating Storage 0 40 70 110 C C Circuit Description The HMR3100 Digital Compass Solution circuit ...
Страница 3: ...cture is a single ground system for single ended supply sources and ground return Note the North Arrow printed on the HMR3100 circuit board top side This is the mechanical reference for product alignment purposes When placed on the development kit s RS 232 motherboard assembly this arrow also points toward the 9 volt batterypin block on the motherboard away from the RJ 11 jack Pin Configuration Pi...
Страница 4: ... and RXD Pin 6 to select the three active modes of operation Normally RTS and RXD input lines are left high until data or hard iron calibration is needed from the HMR3100 The RXD line is left high unless a calibration is requested The RTS line will be either be pulsed low or held low to initiate an active mode Otherwise a low power sleep mode is the default state The RXD and RTS data inputs are pa...
Страница 5: ...ion mode This calibration is only for nearby magnetized metals hard iron that are fixed in position with the HMR3100 At a moderate rate 5 seconds or more per rotation rotate the HMR3100 host assembly two complete circles on a flat non magnetic surface if possible to allow the HMR3100 to take measurements for compass calibration At the completion of the rotations return the RXD to a high logic leve...
Страница 6: ...wo Development Kit The HMR3100 Development Kit includes additional hardware and Windows demo program software to form a development kit for electronic compassing This kit includes the appropriate HMR3100 Printed Circuit Board PCB module soldered to an intermediate circuit board using a 0 8 spacing pin arrangement The intermediate board assembly plugs into an RS 232 motherboard with a serial port c...
Страница 7: ...well reserves the right to make changes to improve reliability function or design Honeywell does not assume any liability arising out of the application or use of any product or circuit described herein neither does it convey any license under its patent rights nor the rights of others 900284 02 04 Rev A ...
