HMR3100
Advanced Information SENSOR PRODUCTS
Solid State Electronics Center • www.magneticsensors.com • (800) 323-8295 • Page 7
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 wide DIP-style (0.8” spacing) pin arrangement. The
intermediate board assembly plugs into an RS-232 motherboard with a serial port connector. In addition, a four-foot
serial port cable (RJ-11 to D-9F), nine-volt battery clip, demo program software, and user’s guide is included. The
RS-232 motherboard incorporates a 5 volt regulator integrated circuit to provide the necessary voltages to the
onboard RS-232 converter integrated circuit and the HMR3100 daughter-board. A nine-volt battery clip is included,
but other DC input voltages between 7 and 15 volts may be used. Supply currents are nominally around 8
milliamperes plus the HMR3100 current draw.
The RS-232 motherboard also contains a six-contact modular jack (RJ-11) for a compact RS-232 interface to a
personal computer serial port. Ground, RTS, RXD, and TXD data lines are brought out to the jack with two contacts
left open. Figure 4 shows the kit board assemblies.
Figure 4
HMR3100 Kit Hardware
