Christchurch, NZ
MReX-PCB User Guide V1.02
MReX-PCB
Mini Transmitter
User Guide
© WTE Limited, 2021 – Christchurch New Zealand
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Page 1: ...Christchurch NZ MReX PCB User Guide V1 02 MReX PCB Mini Transmitter User Guide WTE Limited 2021 Christchurch New Zealand Page 1 of 13...
Page 2: ...Contents Introduction 3 Electrical 4 PCB Pinout 5 Programming the MReX Module 6 Inputs 6 LEDs Outputs 7 LED Piezo Resistor Configuration 8 Piezo connection 10 Physical Dimensions 12 Disclaimer 13 WTE...
Page 3: ...to a system and incorporates the MReX 460 Module For command use and detailed operation consult the MReX 460 User Manual Not shown is the antenna connection This may be an SMA connector fitted to the...
Page 4: ...Christchurch NZ MReX PCB User Guide V1 02 Electrical The following schematic shows how the MReX 460 module is routed to connection pads WTE Limited 2021 Christchurch New Zealand Page 4 of 13...
Page 5: ...trically tied to pin 7 7 Green LED Cathode open drain output 8 Green LED Anode not connected if LED is powered externally 9 Piezo This pin is electrically tied to pin 8 10 Contact Input 4 Connection t...
Page 6: ...loading configuration or uploading new firmware Do NOT apply voltage to this pin if batteries are fitted Note Serial connection is 3 3V TTL The MReX PROG USB to serial adaptor can be provided for seri...
Page 7: ...rminal screw or external connection ESD devices should be fitted If the output is to be used to control a small relay it is essential that a flyback diode is fitted across the coil of the relay Only t...
Page 8: ...ezo sounder is fitted R1 47R R2 is used by the piezo to improve audio response 1K typically The resistor fitted should ideally be selected to produced the greatest audio output R3 is used to limit cur...
Page 9: ...Christchurch NZ MReX PCB User Guide V1 02 WTE Limited 2021 Christchurch New Zealand Page 9 of 13...
Page 10: ...Christchurch NZ MReX PCB User Guide V1 02 Piezo connection The following images guide the connection of the piezo and required resistors WTE Limited 2021 Christchurch New Zealand Page 10 of 13...
Page 11: ...Christchurch NZ MReX PCB User Guide V1 02 WTE Limited 2021 Christchurch New Zealand Page 11 of 13...
Page 12: ...Christchurch NZ MReX PCB User Guide V1 02 Physical Dimensions Overall board dimensions WTE Limited 2021 Christchurch New Zealand Page 12 of 13...
Page 13: ...hat are imposed on importation No User Serviceable Components There are no user serviceable components within the product RoHS and WEEE Compliance MReX is fully compliant with the European Commission...
