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Hawk Baseboard and IO Card Details

Written by Matthew Clark-Massera

Updated at January 29th, 2025

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Table of Contents

Please Note Hawk Pro - BaseBoard Hawk Lite- BaseBoard I/O Cards Current Limits I/O Cards Agtech1 Agtech2 RS-1 Card Serial Card Bluetooth+ Card Digital Card 4-20mA Card

The Hawk is sold in components.

Each IO card has 9 available Input/Outputs. This allows for a variety of sensor-monitoring applications and input combinations to be catered for on the same device. Additionally, if you have a specific set of inputs to monitor, we can manufacture a new IO card to cater for your requirements (MOQs apply).

Please Note

With the launch of the Hawk Lite, the original Hawk Baseboard has been renamed the Hawk Pro. 

 

Hawk Pro - BaseBoard

This is the classic version of the HAWK-4G device.

The baseboard handles the cellular connectivity, and external power connections and has a single Digital Input available. There are 9 x I/O pins, which are used by the I/O cards. Their function is determined by what card is inserted.

Hawk Lite- BaseBoard

This version of the baseboard makes it compatible with lower-energy batteries.

The baseboard handles the cellular connectivity, and external power connections and has a single Digital Input available. There are 9 x I/O pins, which are used by the I/O cards. Their function is determined by what card is inserted.


I/O Cards

Allows the device to be connected to various interfaces. Current cards are listed below

Baseboard pinout

The Hawk Pro and the Hawk Lite have the below 12 lines available on its screw-in terminal header

A hand holding a green circuit board

Description automatically generated

I/Os 1-9 are the I/Os used by the specific Plug-in-board. Card specific mappings are detailed below.

DIG1, GND and VIN are standard Hawk and Hawk Lite pins.
 

Current Limits

Hawk Pro

SWGND: 1A

3.3V Out: 150mA

Vboost (5V/12V): 200mA

 
 

Hawk Lite

SWGND: 1A

3.3V Out: 150mA

Vboost (5V): 120mA

Vboost (12V) 50mA

Note: Theoretically higher currents are possible but will drain the Alkaline batteries extremely quickly.

 
 
 


I/O Cards

Agtech1

Hawk IO

Function

1

SDI-12

2

+VBOOST OUT (5V/12V)

3

Switched Ground Output

4

I²C SDA

5

3.3V output

6

I²C SCL

7

Card Digital Input

8

1-Wire

9

4-20mA

 

Agtech2

Hawk IO

Details

1

SWGND

2

SDI-12

3

+3.3V OUT

4

1-Wire

5

Analog Input 1

6

Analog Input 2

7

Analog Input 3

8

Analog Input 4

9

+VBOOST OUT (5V/12V)

 

RS-1 Card                              

Hawk IO

Function

1

Analogue Input 1

2

+VBOOST OUT (5V/12V)

3

RS485 B

4

RS485 A

5

3.3V output

6

SWGND

7

Card Digital Input

8

1-Wire

9

4-20mA

 

Serial Card

Hawk IO

Details

1

SWGND

2

Analogue Input 

3

Digital Input 1

4

Digital Input 2

5

RS232 RX

6

RS2332 TX

7

TTL RX

8

TTL TX

9

+VBOOST OUT (5V/12V)

 

Bluetooth+ Card

Hawk IO

Details

1

4-20mA Input

2

Analog Input 1

3

SWGND

4

Digital Input 1

5

I2C Clock (SCL)

6

I2C Data (SDA)

7

3.3V OUT

8

+VBOOST OUT (5V/12V)

9

SDI-12

Note: The Bluetooth+ Card also has a Bluetooth module: BGM240PA22VNA3.


Digital Card

Hawk IO

Details

1

+VBOOST OUT (5V/12V)

2

SWGND

3

Analog Input 1

4

Analog Input 2

5

Digital Input 1

6

Digital Input 2

7

Digital Input 3

8

Digital Input 4

9

Digital Input 5

4-20mA Card

Hawk IO

Details

1

4-20mA 1 In

2

4-20mA 1 Out

3

4-20mA 2 In

4

4-20mA 2 Out

5

4-20mA 3 In

6

4-20mA 3 Out

7

4-20mA 4 In

8

4-20mA 4 Out

9

+VBOOST OUT (5V/12V)

pin out hawk cards current limit limit current baseboard wiring

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