Skip to main content

Zest_Core_FMLR-72

Overview

The Zest_Core_FMLR-72 is an electronics development board for 6TRON opensource platform based on Miromico FMLR-72 LoRaWAN module.

The FMLR-72 is a low-power wide-area network (LPWAN) wireless module. It includes a Semtech SX1272 ultra-long-range spread-spectrum wireless transceiver and STM32L071RZ ARM Cortex M0+ 32 bit microcontroller (MCU) with an internal 192 kB flash, 20 kB RAM and an external 4Mb flash. It is capable of sending with up to 20 dBm and receiving with a sensitivity of -137dBm. The board offers a frequency range from 860 MHz up to 1020 MHz.

The board is equipped with an internal ceramic antenna and has an U.FL connector to plug an external antenna.

The Zest_Core_FMLR-72 board features a high density 80-pins interface connector integrating configurable standard communication interfaces (at least 1 SPI, 1 I2C, 3 Analog inputs, 1 UART, 3 PWM, 11 DIO). See 80-pin 6TRON header.

Zest_Core_FMLR-72 Photo

*Consumption of an average European per year

Specifications

FMLR-72 features

  • Ultra-low power STM32L071RZ core
  • 32 MHz max CPU frequency
  • 192 kB flash memory
  • 6 kB EEPROM
  • 20 kB RAM
  • Ultra-long-range spread-spectrum wireless transceiver
  • Frequency Range 860 to 1020 MHz
  • Power output: up tp 20dBm
  • Receive sensitivity: -137 dBm
FeatureDetails
User Interfaces1 user LED 1 power LED 1 user push button 1 reset button
ConnectivityMicro-USB for UART (through FTDI) Micro-USB device JTAG interface (debug and programming) 80-pin 6TRON headers U.FL connector Ceramic Antenna
Board size39mm x 80mm
Power SupplyMicro-USB JTAG External (VJack) 3-12V
CategoryZest_Core

Block Diagram

The graphics below gives an overview of the board features and connections.

Zest_Core_FMLR-72

80-pin 6TRON header

This table shows how the pinout on Zest_Core_FMLR-72 corresponds to the pinout on the 6TRON BUS connector (the latter shown in the two middle columns).

Description6TRON functionPin numberPin number6TRON functionDescription
External Power SupplyVJACK12VJACKExternal Power Supply
External Power SupplyVJACK34VJACKExternal Power Supply
-VHV56VHV-
-VHV78VHV-
I/ODIO8910VIN_ENDisable 6TRON stack power supply from Core
I/ODIO71112DIO9I/O
I/ODIO61314DIO10-
Mother or daughter detectMD1516DIO11-
I/ODIO51718DIO12I/O
GroundGND1920GNDGround
GroundGND2122GNDGround
6TRON Stack Power SupplyVIN2324VIN6TRON Stack Power Supply
6TRON Stack Power SupplyVIN2526VIN6TRON Stack Power Supply
daughterVB_EN2728DIO13-
Power Zest output signalVB_OUT2930DIO14-
-DAC13132DIO15-
-ADC43334DIO16-
Analog InputADC33536DIO17-
Analog InputADC23738DIO18I/O
Analog InputADC13940GNDGround
Global ResetEXT_NRST4142GNDGround
I/ODIO44344VREFReference Voltage
I/ODIO34546DIO19-
I/ODIO24748DIO20-
I/ODIO14950DIO21-
-WKUP5152DIO22-
-ICAPT5354DIO23-
PWM OutputPWM35556DIO24-
PWM OutputPWM25758DIO25-
PWM OutputPWM15960DIO26-
SPI Chip selectSPI1_SS6162DIO27-
SPI ClockSPI1_SCK6364DIO28-
SPI MISOSPI1_MISO6566DIO29-
SPI MOSISPI1_MOSI6768DIO30-
UART core to ZestUART1_TX6970DIO31-
UART Zest to coreUART1_RX7172DIO32-
I2C DataI2C1_SDA7374DIO33-
I2C ClockI2C1_SCL7576DIO34-
-CAN1_TX7778DIO35-
-CAN1_RX7980DIO36-

Software Support

The Zest_Core_FMLR-72 board provides a demo example developed using Mbed OS. The board can run on Zest Core development boards.

Environmental impact

The Eco score of the Zest_Core_FMLR-72 is expressed in points representing the environmental impact of an average European per year.

Zest_Core_FMLR-72

Zest_Core_FMLR-72

Eco-score details

BOM

Componentdataunit
Passive electronic component0,68g
Active electronic component0,11g
LED0,01g
Other component0,00g
Connectors Switchs3,33g
Logique type integrated circuit0,26g
Memory type integrated circuit0,00g
PCB3120mm²

Consumption

Low voltage electricity voltage France
Current20mA
Supply voltage5V
Autonomy100h
% use75%
Energy0,0075kWh

Ressources