Zest_Carrier_Extension

Overview

The Zest_Carrier_Extension board with fully symmetrical connectors provides a simple solution for expanding the functionality of the application with a wide range of specialized Zest daughter boards. It permits to split the stack to facilitate the test and to extend the functionality of the application: for example, simultaneous use of a camera and of PIR sensors, or the implementation of multiple environment sensors.

Specifications

Connectivity	2 x 80-pin 6TRON headers
Board size	80 x 80 mm
Power Supply	Passive board
Category	Zest_Carrier

Block Diagram

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

Power Management

The Zest_Carrier_Extension board comes with two connectors with difference in power management:

• J1 must be used to plug at least the main Zest Core and the power source for the whole assembly,
• J2 is powered exclusively from the sources on J1, as its VIN_EN signal is grounded. All power sources from boards plugged on J2 are deactivated.

This is why the J2 side has the following inscription on the PCB: "Daughter boards only / No power source".

Serial / UART Management

Be aware that the signal MD is set to 0 (GND) on J2. Consequently, a Zest Core plugged on the J2 stack has its UART1_TX (pin 69) and UART1_RX (pin 71) signals inverted, to be able to communicate properly with the main Zest Core on J1.

See any Zest Core datasheet for additional information about MD signal ("Mother/Daughter").

80-pins 6TRON header

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

Description	6TRON function	Pin number	Pin number	6TRON function	Description
External Power Supply	VJACK	1	2	VJACK	External Power Supply
External Power Supply	VJACK	3	4	VJACK	External Power Supply
High Voltage External Power Supply	VHV	5	6	VHV	High Voltage External Power Supply
High Voltage External Power Supply	VHV	7	8	VHV	High Voltage External Power Supply
I/O	DIO8	9	10	VIN_EN	Disable 6TRON stack power supply from Core
I/O	DIO7	11	12	DIO9	I/O
I/O	DIO6	13	14	DIO10	I/O
Mother or daughter detect	MD	15	16	DIO11	I/O
I/O	DIO5	17	18	DIO12	I/O
Ground	GND	19	20	GND	Ground
Ground	GND	21	22	GND	Ground
6TRON Stack Power Supply	VIN	23	24	VIN	6TRON Stack Power Supply
6TRON Stack Power Supply	VIN	25	26	VIN	6TRON Stack Power Supply
Enable 6TRON stack power supply from daughter	VB_EN	27	28	DIO13	I/O
Power Zest output signal	VB_OUT	29	30	DIO14	I/O
Analog Output	DAC1	31	32	DIO15	I/O
Analog Input	ADC4	33	34	DIO16	I/O
Analog Input	ADC3	35	36	DIO17	I/O
Analog Input	ADC2	37	38	DIO18	I/O
Analog Input	ADC1	39	40	GND	Ground
Global Reset	EXT_NRST	41	42	GND	Ground
I/O	DIO4	43	44	VREF	Reference Voltage
I/O	DIO3	45	46	DIO19	I/O
I/O	DIO2	47	48	DIO20	I/O
I/O	DIO1	49	50	DIO21	I/O
System wake-up	WKUP	51	52	DIO22	I/O
PWM Output	ICAPT	53	54	DIO23	I/O
PWM Output	PWM3	55	56	DIO24	I/O
PWM Output	PWM2	57	58	DIO25	I/O
PWM Output	PWM1	59	60	DIO26	I/O
SPI Chip select	SPI1_SS	61	62	DIO27	I/O
SPI Clock	SPI1_SCK	63	64	DIO28	I/O
SPI MISO	SPI1_MISO	65	66	DIO29	I/O
SPI MOSI	SPI1_MOSI	67	68	DIO30	I/O
UART core to Zest	UART1_TX	69	70	DIO31	I/O
UART Zest to core	UART1_RX	71	72	DIO32	I/O
I2C Data	I2C1_SDA	73	74	DIO33	I/O
I2C Clock	I2C1_SCL	75	76	DIO34	I/O
CAN core to driver	CAN1_TX	77	78	DIO35	I/O
CAN driver to core	CAN1_RX	79	80	DIO36	I/O

Environmental impact

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

Eco-score details

BOM

Component	data	unit
Passive electronic component	0,00	g
Active electronic component	0,11	g
LED	0,00	g
COther component	0,00	g
Connectors Switchs	2,00	g
Logique type integrated circuit	0,00	g
Memory type integrated circuit	0	g
PCB	3120	mm²

Consumption

Low voltage electricity voltage France
Current	20	mA
Supply voltage	5	V
Autonomy	100	h
% use	75	%
Power	0,0075	kWh

Ressources

• Schematic
• Assembly Drawing
• Bill Of Materials