Embedded Planet epConnected Asset, Product User Manual

Page 1: ...www embeddedplanet com Embedded Planet Inc v1 0 1 05 APR 2022 epConnected Asset 4G LTE M Cellular Modem GNSS Tracking Bluetooth Sensors Product User Manual ...

Page 2: ...ted Asset device For elaboration on drawings software or other specific product details there may be other sources of information to which this document points as reference For the latest documentation including document certification updates please always refer to the Embedded Planet documentation page https www embeddedplanet com product documentation Product Web Page The epConnected Asset produ...

Page 3: ...meter U8 15 9 5 Sensors Temperature Humidity U14 16 10 Indicators 17 10 1 Indicators RGB LED 17 10 2 Indicators Battery Status LEDs 17 11 Memory 18 12 Power 18 12 1 Power Battery 18 12 2 Power Battery Charging 19 12 3 Power Battery Monitor 19 12 4 Power USB Connector 19 12 5 Power Battery Connector 20 12 6 Power nRF52840 Power Control 20 12 7 Power Sensor Power Control 20 12 8 Power Chronos Power ...

Page 4: ...ing Requirements 36 18 9 FCC Additional Testing Part 15 Subpart B Disclaimer 36 19 Revision History 37 Table 1 Part Number Configurator 5 Table 2 Board connectors 6 Table 3 Key board components 7 Table 4 Key Board Components Bottom 8 Table 5 Device specifications 10 Table 6 RGB LED pin details 17 Table 7 MCU Pinout 22 Table 8 Mini tectonic edge pinout 24 Table 9 Mini Tectonic Edge Resistor options...

Page 5: ... to leverage the attached Chronos module on board sensors Device sensors include a barometer altimeter a 3 axis accelerometer a 6 axis IMU and a 9 axis IMU An ultra low power timer is present to enable long battery life applications Rechargeable LiPo battery compatibility is also supported Acquired data can be stored in the provided on board flash memory Data can be transferred over the cellular c...

Page 6: ...N 2 Battery Charger N None L42 Lithium 4 2V 3 USB Connector N None B USB Micro B 4 Flash Memory N None 16 16MB 5 Inertial Measurement N None 3 3 axis accelerometer 6 3 axis accelerometer 3 axis gyroscope 9 3 axis accelerometer 3 axis gyroscope 3 axis magnetometer 6 Barometer N None M MPL3115A2 7 Temperature Humidity N None S Si7021 A20 8 Low power Timer N None T TPL5110 9 GNSS N None G GNSS 10 Cel...

Page 7: ...ts Connectors Interfaces TABLE 2 BOARD CONNECTORS Category Reference Designator Component Type Description Purpose Connector J3 JST Battery For use with external LiPo battery Connector J2 Micro USB Battery charging and data transfer Connector J5 Expansion Header SPI GPIO 3 0V I O ref battery voltage Connector Mini Tectonic Edge Board Edge Finger Mini Tectonic Edge for programming J3 Battery J2 USB...

Page 8: ...Power 2 Battery through holes Alternate option to the JST connector LED 3 RGB LED Useful as a status indicator or for debug LED 4 Red Green LEDs Indicate battery charging status MCU 5 nRF52840 Main processor that controls the system Antenna 6 GNSS antenna Onboard option for GNSS antenna Flash 7 External NOR Flash Dedicated flash memory for nRF52840 Antenna 8 Cellular antenna Onboard option for Cel...

Page 9: ...ence Component Type Description Purpose Label 1 Label Serialization board identification Modem 2 Chronos modem module Cellular GNSS connectivity modem LED 3 Red LED Status debug indication SIM 4 Nano SIM SIM usage default SIM 5 eSIM embedded SIM SIM usage optional Cell module 6 Telit cellular module Cellular GNSS connectivity 1 Serial Number Board ID label 2 Chronos modem 8 Chronos Telit module 3 ...

Page 10: ...5 Block Diagram ...

Page 11: ...link up to 1Mbps Downlink up to 588kbps SIM Removable 4FF nano SIM card slot Soldered down MFF2 Internal Telit simWISE Cellular Certifications PTCRB Complete Chronos AT T Complete Chronos Verizon Complete Chronos GNSS Specifications Constellations GPS GLONASS BeiDou Galileo QZSS Tracking Sensitivity 159dBm Navigation Sensitivity 155dBm Cold Start Sensitivity 144dBm Power Supply For battery chargin...

Page 12: ...to the epConnected Asset board through U FL to U FL cables Section 15 Antennae goes into further detail on these connections 8 MCU The MCU on the epConnected Asset is Nordic s nRF52840 U1 Details of this MCU can be found here https www nordicsemi com Products Low power short range wireless nRF52840 The nRF52840 is used to control power to the on board sensors and to Chronos using GPIO The sensors ...

Page 13: ...perature Humidity U14 9 1 Sensors 3 Axis Accelerometer U15 The onboard 3 axis accelerometer option is the Memsic MC3479 This device accommodates an I2 C operating frequency of up to 1MHz The I2 C address is 1001100b 0x4C The accelerometer has programmable full scale ranges of 2g 4g 8g 12g and 16g The accelerometer has a 16 bit ADC and the internal sample rate can be set from 0 5Hz to 1kHz The ADC ...

Page 14: ...ccelerometers are factory calibrated and nominally independent of supply voltage The MEMS accelerometer has programmable full scale ranges of 2g 4g 8g and 16g A wake on motion interrupt user programmable interrupts and self test features are all available The accelerometer has a 16 bit ADC that provides output in 2 s complement format The ADC sample rate is programmable from 3 9Hz to 4kHz 9 2 2 U6...

Page 15: ...ice can be found at https www st com en mems and sensors lsm9ds1 html Shown without U FL cables connected for visual reference only The device must have its U FL cables connected 9 3 1 U7 3 Axis Accelerometer The MEMS accelerometer has the following specifications Programmable full scale ranges of 2g 4g 8g and 16g 16 bit ADC word length Programmable ADC sample rate from 14 9Hz to 952Hz 9 3 2 U7 3 ...

Page 16: ... zero pressure reference vacuum sealed inside the reference chamber of the die during manufacturing Absolute pressure is reported as 20 bit unsigned data in Pascals and fractions of a Pascal The value is represented in Q18 2 fixed point format 18 integer bits and 2 fractional bits 1LSB 0 25Pa 9 4 2 U8 Altimeter In altimeter mode all pressure data is converted to equivalent altitude based on the US...

Page 17: ...measurement has been made the results may be converted to C by using the following expression Where the variable Temp_Code is the 16 bit word returned by the Si7021 9 5 2 U14 Humidity The operating range of the humidity sensor is 0 100 relative humidity non condensing The typical accuracy is 2 in the 0 80 RH range and 3 in the 80 100 RH range Once a relative humidity measurement has been made the ...

Page 18: ...nnels and a pair of red green single color LEDs to indicate battery charge status 10 1 Indicators RGB LED An RGB LED LED1 is provided on board for user feedback This RGB LED is under the control of the MCU nRF52840 and can be configured according to the programmed application TABLE 6 RGB LED PIN DETAILS Color Pin Name Resistor Red N1 P0 08 R9 Green U1 P0 12 R10 Blue R1 P1 09 R11 10 2 Indicators Ba...

Page 19: ...T connector J3 The battery must be a secondary 1SxP lithium battery A 3 7V nominal lithium ion or lithium polymer battery is the suggested battery choice for the epConnected Asset The battery should be chosen with the consideration that the minimum required voltage is 3 2V and the charge termination voltage is 4 2V The capacity of the battery may vary based on the needs of the end application The ...

Page 20: ... designed to run off battery power the USB connector is for battery charging while the JST connector is for powering the device during operation More on the Microchip MCP73831 can be found at https www microchip com en us product MCP73831 12 3 Power Battery Monitor The epConnected Asset includes a battery voltage monitor that is connected to an ADC input AIN0 on the nRF52840 This allows the system...

Page 21: ...he nRF52840 remains on for a long as is needed to perform the actions required When all tasks are complete the nRF52840 indicates to the timer that it is DONE and the timer resets The timer can also be configured in timer mode with the timing set by the resistors on the Delay M_DRV pin Overall battery life can be maximized by using the nRF52840 timer control to power the MCU only while it is neede...

Page 22: ...put of REG0 is set for 3 0V and is used to power the external sensors and flash while enabled by sensor power load switch U5 This also means that the I O reference voltage on the nRF52840 is 3 0V REG0 can supply up to a collective 25mA to these components when the nRF52840 s radio is off or transmitting at 4dB or less REG1 of the nRF52840 is also set to DC DC configuration The output of REG1 power...

Page 23: ...2 LED_GRN O 0 off 1 on W1 VDD VNRF Power Output of nRF52840 REG0 Default 1 8V SW should set to 3 0V to run peripherals AB2 DCCH none Power Y2 VDDH VMCU Power 5V maximum AC5 DECUSB none n a Bypass capacitor AD2 VBUS VBUS I USB power detection AD4 D USB_D_N I O USB data negative AD6 D USB_D_P I O USB data positive AD8 P0 13 DEBUG AUX_TX O Debug UART AC9 P0 14 CELL_RTS O Cell modem UART AD10 P0 15 CE...

Page 24: ...mmon H23 ANT none I O Bluetooth antenna E24 DEC6 DEC4_6 Power Bypass capacitor D23 DEC3 none Power Bypass capacitor B24 XC1 none n a 32MHz crystal A23 XC2 none n a 32MHz crystal A22 VDD VNRF Power Bypass capacitor A20 P1 10 P1 10 I O J5 pin 7 B19 P1 11 BAT_MON_EN O Turn on battery voltage monitor 0 off 1 on Pin Pin name Net Name Direction Notes A18 DEC2 none Power Bypass capacitor B17 P1 12 P1 12 ...

Page 25: ...e that the board reverses its x axis with the change in view sides as if the physical board itself was being flipped over TABLE 8 MINI TECTONIC EDGE PINOUT Pin Direction Description SWO Output Single wire debug output RESET Input nRF52840 reset active low SWDCLK Input Single wire debug clock SWDIO I O Single wire debug data COM n a Board common VBAT Power Input 3 4V to 4 2V input to power the boar...

Page 26: ...ted R1 unpopulated R3 populated R4 unpopulated R4 populated R3 unpopulated 14 3 Expansion Header Pinout J5 The expansion header is a 10 pin header J5 with access to the nRF52840 SPI port additional GPIO the 3 0V IO reference voltage and the battery voltage TABLE 10 EXPANSION HEADER PINOUT Category Pin Description Power 1 VBAT battery voltage COM 2 COM Signal 3 P1 14 Signal 4 P1 13 Signal 5 P1 12 S...

Page 27: ...the epConnect Asset main board The correct connection configuration is depicted in the figure below Note The U FL connection wires MUST be attached between Chronos and the epConnected Asset board for the cellular GNSS functionalities to work 15 1 Antennae Cellular Antenna The onboard PCB mounted 4G cellular antenna ANT2 used on the epConnected Asset is the Antenova SR4L034 L More on this device ca...

Page 28: ...ed with the epConnect Asset device please contact Embedded Planet for details support embeddedplanet com 16 Electrical Specifications 16 1 Absolute Maximum Minimum Ratings TABLE 11 ABSOLUTE MAXIMUM MINIMUMS Board Pin Min V Max V Notes VBUS 0 3 5 5 With respect to COM VBAT 0 3 4 5 With respect to COM All I O pins Mini Tectonic Edge Expansion Header 0 3 VnRF 0 3 With respect to COM 16 2 Recommended ...

Page 29: ...opulated With JST connector and expansion header 28 40mm 56 5mm 12 67mm Dimensions J3 J5 unpopulated No JST connector or expansion header 28 40mm 56 5mm 10 24mm 17 2 Mechanical Drawings Within this section are mechanical drawings provided for the purpose of understanding the general size shape and layout of the epConnected Asset device For the most complete up to date documentation on mechanical d...

Page 30: ...17 2 1 Mechanical Drawings Assembly Views ...

Page 31: ...Connected Asset Product User Manual Document Version 1 0 0 26 Jan 22 Embedded Planet Inc 31225 Bainbridge Rd Suite N Solon OH 44139 216 245 4180 www embeddedplanet com Page 30 of 37 17 2 2 Mechanical Drawings Dimensions Top ...

Page 32: ...onnected Asset Product User Manual Document Version 1 0 0 26 Jan 22 Embedded Planet Inc 31225 Bainbridge Rd Suite N Solon OH 44139 216 245 4180 www embeddedplanet com Page 31 of 37 17 2 3 Mechanical Drawings Dimensions Bottom ...

Page 33: ...Connected Asset Product User Manual Document Version 1 0 0 26 Jan 22 Embedded Planet Inc 31225 Bainbridge Rd Suite N Solon OH 44139 216 245 4180 www embeddedplanet com Page 32 of 37 17 2 4 Mechanical Drawings Dimensions Side ...

Page 34: ...mation 18 1 Cellular Certifications PTCRB Chronos https www ptcrb com device details model 45454 AT T TRENDI Chronos https marketplace att com certified devices Verizon ODI Chronos https opendevelopment verizonwireless com device showcase device 11766 18 2 RoHS Compliance The epConnected Asset device including Chronos complies with the RoHS Reduction of Hazardous Substances directive of the Europe...

Page 35: ...ifferent from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help 18 4 FCC and ISED Compliance If the antenna for the Chronos modem is located farther than 20cm from the human body and there are no adjacent transmitters the FCC and ISED approvals of the modem s Telit ME301G1 W1 cellular module can be reused by the end product If the modem s ant...

Page 36: ...E 15 FCC MAX GAIN BY BAND Omnidirectional Antenna Gain 2 14dBi Band Max Gain for FCC dBi FDD2 11 0 FDD 4 8 0 FDD 5 12 4 FDD 12 11 6 FDD 13 12 1 FDD 25 11 0 FDD 26 12 3 FDD 66 8 0 FDD 71 11 4 FDD 85 11 6 18 7 Antenna Notice ISED The radio transmitter in Chronos has been approved by ISED to operate with the antenna types listed below with the maximum permissible gain indicated Antenna types not incl...

Page 37: ... is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification If the grantee markets their product as being Part 15 Subpart B compliant when it also contains unintentional radiator digital circuity then the grantee shall provide a notice stating that the final host product still requires Part 15 Subpart B compliance testi...

Page 38: ...HISTORY Contact Embedded Planet Embedded Planet 31225 Bainbridge Rd Suite N Solon OH 44139 Phone 216 245 4180 Fax 216 292 0561 www embeddedplanet com Company Email Sales sales embeddedplanet com Information Requests info embeddedplanet com Technical Support support embeddedplanet com Revision Author Description Date 1 0 0 M Trowbridge Initial Release preliminary 26 Jan 2022 1 0 1 M Leopold Correct...