v1.0.0

TAT image

General Information
Microcontroller ESP32-S3-WROOM-1
Modem NB-IoT/LTE-M with GSM fallback - Embedded Nano-SIM Holder
GNSS GPS, BeiDou, Galileo, GLONASS and QZSS
Power Supply Battery (rechargeable), USB, Solar Panel
Onboard Diagnostic Sensors Temperature/Humidity based on the SHT40 sensor IC
Misc Header for firmware flashing/debugging through UART
Power/Debugging through USB (debugging not fully supported yet, use UART instead)
Support for external switch
Software Micropython (aligned with version 1.19)
Open-source libraries & demo scenarios @ Github
WiFi based Web Configurator wizard
Dimensions (L x W x H) (+ WiFi antenna) 78 (83.5) x 57.2 x 16.7 mm
Weight 28 g
Enclosure IP65/IP67

Example Applications & Sensors Support

  • Precision Agriculture/Apiculture
    • Soil Moisture, Soil/Water Electrical Conductivity, Weight (beehive)
  • Environmental/Industrial monitoring
    • Indoor Air quality, Outdoor Temperature & Humidity
  • Cyclic Economy
    • Weight (waste)
  • Asset tracking & Road Quality Detection
    • Location, Speed, Acceleration, Magnetometer

Communication

  • Wireless technologies
    • WiFi
    • Bluetooth
    • GSM / NB-IoT / LTE-M
  • Transport protocols
    • TCP/UDP over IPv4/IPv6
    • MQTT
    • CoAP

Power Supply
USB Port (Port ID) Input Voltage
Micro USB (J2) Min. Typ. Max. Units
4.5 5 5.5 V
Battery Port (Port ID) Nominal Characteristics
JST (J1) 1 x Rechargeable LiPo 1S1C 3.7-4.2 V
Solar Panel Port (Port ID) Input Voltage
Fixed Terminal Block with push-in connection Min. Typ. Max. Units
No tools required (J4) 5.5 6 6.5 V

Operating Conditions
Microcontroller Operating Voltage 3.3 V
Charging Current Limit 440 mA
Maximum Drawn Current 3 A
Operational Temperature 0 – 60 C
Charging Temperature 0 – 60 C

Indication LEDs

Charging State Indication (RED LED)

Charge cycle state LCR LED
No input OFF
Temperature fault BLINKING
No battery BLINKING
Charging ON
Charge complete OFF

Modem State Indication (RED LED)

Modem state LCR LED
Disabled OFF
Network Search BLINKING SLOWLY (OFF most of the time)
Idle BLINKING SLOWLY (ON most of the time)
Transferring Data BLINKING QUICKLY

Operational State Indication (RGB LED)

Operational State RGB LED
Deep Sleep OFF
Web UI Loaded (waiting for connection) MAGENTA (BLINKING)
Booting/Sensors reading BLUE
Trying to attach to Network RED
Connected to Network, ready to send data GREEN

Switches

Switch Name Details
S1 Controls power supply to the micro-controller (the battery charging process is not affected)
S2 Tactile switch for resetting the micro-controller
S3 Tactile switch for activating the micro-controller’s bootloader (needed only for fw upgrade)
EXT SW External latching switch to control micro-controller’s power (the battery charging process is not affected)
SNSR_GND Electronic software-controlled ground switch for enabling/disabling power supply to sensors on-demand

Switch combinations & power supply

External switch (EXT SW - J4) On-board switch (S1) Circuit
Open ON ON
Open OFF OFF
Closed ON ON
Closed OFF ON

Energy Consumption Profiling
Battery Voltage Accurate Measurement of battery voltage even at charging state

External components required/recommended

  • Battery
    • 2200-4000 mAh
  • Solar Panel
    • 6V/1-2W
  • Flexible Cellular Antenna
  • Flexible GPS Antenna
  • SIM card

Expansion Capabilities

Sensor Board Expansion

General Description
  • Position: Top-right
  • Type: 1 x Single-Row (R1) & 1 x 2-row (R2-1 & R2-2) 10-pin Female Socket Header
  • Number of exposed pins: 30 x power/analogue/digital pins (IOs)
  • Usage
    • attaching insigh.io add-on boards
    • create custom applications in breadboards
Pins mapping

Note: Orientation as in the board picture

R1 R2-1 R2-2
IO2 IO40 IO35
IO1 IO18 IO36
V_SW IO17 IO37
GND IO11 IO41
3.3V IO9 IO42
GND IO8 IO43
3.3V IO7 IO44
V_ESP IO6 IO48
GND IO5 SCL
S_GND IO4 SDA
Pins Description

  • Power Pins (Output Only)

    • 3.3V : Constant 3.3V Output from LDO used also to power the micro-controller
    • V_SW : Physical switch output voltage before the regulator (post-charger output)
    • V_ESP : Used for breaking the micro-controller’s power line if needed (see custom configurations)
    • GND : Common Ground
    • S_GND : Electronically-controlled Ground Pin (ground switch through IO12)

  • Other Sensor/Control Pins (Input/Output)

    • SCL (IO38) : I²C Control Line (Already Pulled-up)
    • SDA (IO39) : I²C Data Line (Already Pulled-up)
    • IO43 : UART TXD0 for Debugging/Firmware Flashing using USB-to-Serial Cable (also exposed in separate header “J5”)
    • IO44 : UART RXD0 for Debugging/Firmware Flashing using USB-to-Serial Cable (also exposed in separate header “J5”)
    • IO4-9 : General I/O, can be used as ADC pins
    • All other pins, except reserved pins mentioned below, can be freely used as digital IOs and power pins with low (up to a few mA) current requirements

  • Reserved Pins (Used for internal purposes only)

    • IO3 & IO14 : Measure the battery state (voltage)
    • IO12 : Control (Enable/Disable) the additional ground pin
    • IO21 & IO47 : Control (Power/Set) the RGB LED
    • IO10 & IO13 : Control (Reset/Enable) the Cellular Modem
    • IO15 & IO16 : Serial (UART) Pins for communicating with the Cellular Modem
    • IO19 & IO20 : D-/D+ pins for native USB control (under development)

Note: You could also check the ESP32-S3-WROOM-1 Datasheet for further information on the annotated pins

Radio/GPS Expansion

General Description
  • Position: Mid-left
  • Type: 1 x 2-row (R3-1 & R3-2) 5-pin Female Socket Header
  • Number of exposed pins: 10 x power/analogue/digital pins (IOs)
  • Usage
    • attaching insigh.io special radio (LoRa/GPS) add-on board Comment: Information about pins and mapping are provided in the LoRa radio expansion board

Special configurations

(Please consult us before making these changes)

  • By default R20 (0 Ohm) is not mounted and R15 (0 Ohm) is mounted. In case you need to bypass the charger and power the board solely through a battery then R15 should be removed and R20 should be mounted.
  • By default R26 (0 Ohm) is mounted. In case you need to break the micro-controller’s power line (e.g. for adding a hardware watchdog) then this should be removed.

Marking
CE planned
FCC planned
RoHS planned

Custom designs

The existing boards are highly configurable and expandable so if the existing boards do not fit your need, get in contact with us and we will tailor a solution for you with your customizations.