Header Pinout¶

The HARDWARIO TOWER - Industrial IoT Kit emphasizes hardware modularity and reusability. In order to achieve such goal, the proper interconnection system has to be used. HARDWARIO sticks to a well-known and widely accepted standard - the so-called headers with a 2.54 mm (0.1 inch) pitch.

Core Module pinout¶

Cloony pinout¶

Eagle footprint library¶

You can download HARDWARIO TOWER library for Eagle EDA software which contains Standard Module and Cloony format.

Module Drawing & Pinout - Standard¶

Module Drawing & Pinout - Large¶

Module Signals¶

This is a summary of basic peripherals available on the module header:

18x GPIO channels (General Purpose Input/Output)
6x ADC channels (Analog-to-Digital Converter)
2x DAC channels (Digital-to-Analog Converter)
3x UART channels (Universal Asynchronous Receiver Transmitter)
2x I²C bus (Inter-Integrated Circuit)
1x SPI bus (Serial Peripheral Interface)

The following table defines signal assignment on module header:

Warning

Do not connect anything on the VDD_OFF and BAT_OFF signals unless you are sure what you are doing.

Pin	Signal	Description	STM32 GPIO
1	P0 A0 TXD0	GPIO channel 0 ADC channel 0 UART channel 0 - TXD signal	PA0
2	P1 A1 RXD0	GPIO channel 1 ADC channel 1 UART channel 0 - RXD signal	PA1
3	P2 A2 TXD1	GPIO channel 2 ADC channel 2 UART channel 1 - TXD signal	PA2
4	P3 A3 RXD1	GPIO channel 3 ADC channel 3 UART channel 1 - RXD signal	PA3
5	P4 A4 DAC0	GPIO channel 4 ADC channel 4 DAC channel 0	PA4
6	P5 A5 DAC1	GPIO channel 5 ADC channel 5 DAC channel 1	PA5
7	P6 RTS1	GPIO channel 6 UART channel 1 - RTS signal	PB1
8	P7 CTS1	GPIO channel 7 UART channel 1 - CTS signal	PA6
9	P8	GPIO channel 8	PB0
10	P9	GPIO channel 9	PB2
11	RESET	System reset Also button “R” on Core Module R1	NRST
12	BOOT	Boot mode	BOOT0
13	VDD_OFF	From top side: VDD_OFF_OUT From bottom side: VDD_OFF_IN
14	BAT_OFF	Battery disconnect signal
15	GND	System GND (ground)
16	VDD	System VDD (positive rail)
17	SCL0	I²C bus 0 - SCL signal	PB10
18	SDA0	I²C bus 0 - SDA signal	PB11
19	INT	System interrupt signal	PC13
20		Key - no signal
21	P10/RXD2	UART channel 2 - RXD signal	PA10
22	P11/TXD2	UART channel 2 - TXD signal	PA9
23	P12/MISO	SPI bus - MISO signal	PB14
24	P13/MOSI	SPI bus - MOSI signal	PB15
25	P14/SCLK	SPI bus - SCLK signal	PB13
26	P15/CS	SPI bus - CS signal	PB12
27	P16/SCL1	I²C bus 1 - SCL signal	PB8
28	P17/SDA1	I²C bus 1 - SDA signal	PB9

Module Format¶

Format Module defines:

Spacing and signals between two rows of 14-pin headers (see table below)
Four mounting hole positions and their diameter
Position of mechanical key (filled hole in header) preventing reverse insertion
Position of sockets from top view
Position of pins from the bottom view
Recommended PCB height 55 mm
Recommended PCB thickness 1.5 mm
Radius of rounded corners 3.8 mm

Tag Format¶

The primary purpose of tag format is to provide signal break-out for I²C peripheral in a compact form-factor. It can be anything I²C-related - e.g. sensors, memories, RTCs, etc.

Format tag defines:

Signals on a 5-pin header (see table below)
Letter “D”-shaped PCB outline
Mechanical dimensions 16 x 16 mm
Recommended PCB thickness 1.5 mm
Radius of rounded corners 3.8 mm

Tag Drawing & Pinout¶

Tag Signals¶

The following table defines signal assignment on tag header:

	Signal	Description
1	GND	System GND (ground)
2	VDD	System VDD (positive rail)
3	SCL	I²C bus - SCL signal
4	SDA	I²C bus - SDA signal
5	INT	System interrupt signal