Silvair SF-103 User manual
October 2019
UART
Evaluation Board
User manual
Date: 14.10.2019
SF-103 Rev. 4
www.silvair.com
UART Evaluation Board User Manual Rev. 4
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UART Evaluation Board User Manual Rev. 4
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UART Evaluation Board User Manual Rev. 4
Table of Contents
1. Introduction 2
1.1 Kit contents 4
1.2 Features 4
2. Hardware description 5
2.1 Power supply 5
2.2 Light Module Factory Reset 5
2.3 Teensy LC Module status LED 6
2.4 UART bus configuration 6
2.5 I2C connector (CLIENT mode only) 7
2.6 Sensor connector (SERVER mode only) 8
2.7 0-10V Module connector (SERVER mode only) 8
2.8 LED OUT (SERVER mode only) 9
2.9 Lightness switch (CLIENT mode only) 10
2.10 Delta switch (CLIENT mode only) 10
2.11 Tact switches (CLIENT mode only) 10
2.12 External MCU Socket 11
2.13 Schematic 12
3. Support 13
4. Document revisions 14
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UART Evaluation Board User Manual Rev. 4
1. Introduction
The Silvair UART Evaluation Board is an evaluation platform for testing and evaluation of
Firmware developed on customer’s microcontroller unit in cooperation with Silvair UART
Modem to deliver communication with Bluetooth Mesh network. It gives possibility to test:
●0-10V Analog output
●PWM output
●Analog sensor input
●LED Outputs
●Button, slider/potentiometer and rotary encoder input
●UART, I2C interface
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UART Evaluation Board User Manual Rev. 4
1.1 Kit contents
The Silvair UART Evaluation Board kit comes with the following:
●UART Evaluation Board
●Light Module 2.2
●Teensy LC Module
●USB Power Supply Cable
1.2 Features
You can power up the following features on a Silvair UART Evaluation Board:
●Server
○On-board LED output
○0-10V or 1-10V output (depending on hardware configuration)
○PWM output
○Sensor input
○Information about PIR and ALS status on an LCD 16x2 Alphanumeric Display
●Client
○Lightness control via slider potentiometer
○Delta control via rotary encoder
○ON/OFF and scene control via tact switches
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UART Evaluation Board User Manual Rev. 4
2. Hardware description
2.1 Power supply
UART Evaluation Board is powered by two options: micro USB connector on Teensy LC Module or via DC
connector 2,5mm/5,5mm J19 with 12V. They can be used simultaneously. If micro USB is the only power source,
the minimum output current should be 60mA. Shining POWER LED indicates a properly supplied board.
NOTE:For 0-10V or 1-10V output, please provide 12V on J19 connector.
2.2 Light Module Factory Reset
A Factory Reset restores the device to default settings and removes it from a Bluetooth Mesh
network. Depending on the configuration, settings can be restored to default values by
pressing and holding the Factory Reset button for 5s.
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UART Evaluation Board User Manual Rev. 4
2.3 Teensy LC Module status LED
D4 Status LED duplicates LED indicator which is on Teensy LC module board on pin 13.
2.4 UART bus configuration
On UART Evaluation Board there are two 2x1 headers. Jumpers need to be placed on the board as indicated
below for a proper communication.
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UART Evaluation Board User Manual Rev. 4
Additionally, there are two LEDs on the Modem side which are connected to RX (green LED)
and TX (amber LED).
The diagram below shows how to connect the MODEM and external MCU.
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UART Evaluation Board User Manual Rev. 4
RX/TX signals are also connected to the J25 connector for debugging purposes.
2.5 I2C connector (CLIENT mode only)
On UART Evaluation Board I2C connector is placed, which by default provides 5V logic signal from Teensy LC
module pins:
●SDA - pin 18
●SCL - pin 19
For a 3.3 V logic signal, the R40 and R41 resistors must be removed and 10kΩ resistors R42,
R43 must be placed.
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UART Evaluation Board User Manual Rev. 4
2.6 Sensor connector (SERVER mode only)
PIR and ALS sensors can be connected to UART Evaluation Board with a RJ9 connector shown on the below
board as (J15). Another way to connect signals from sensor is to match them to J5 header connector.
There is a PIR LED for occupancy indication. By default, PIR LED is set to positive logic. For a negative one, Q2,
R6, R14 need to be disassembled and 4k7Ω resistor mounted to R4.
By default, board provides 3V3 power supply for a sensor. For 5V, remove R19 and assembly 0Ω to R21.
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UART Evaluation Board User Manual Rev. 4
2.7 0-10V Module connector (SERVER mode only)
On board there are also connectors for 0-10V Module (which may also cut off the mains power supply). If you
want to use only 0-10V functionality, you can use the signal only from J26 without 0-10V Module board.
To use 0-10V from 0-10V Module orJ26 connector, place a jumper as shown on the board.
2.8 LED OUT (SERVER mode only)
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UART Evaluation Board User Manual Rev. 4
To simulate external lamp behaviour,D2 LED OUT can be used. A jumper must be placed on the
LED OUT position.
2.9 Lightness switch (CLIENT mode only)
To change the color temperature message (CCT mesh model), you can use a slide potentiometer R29. This
command sets the absolute value for lightness to change.
2.10 Delta switch (CLIENT mode only)
For sending delta message, you can use an encoder switch SW5. By default, it is set to 10%.
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UART Evaluation Board User Manual Rev. 4
2.11 Tact switches (CLIENT mode only)
Tact switches SW1, SW2 are used to send ON/OFF messages, SW3, SW4 are used to recall preset scenes in
zones. For example these messages may allow the user to turn off all the lights, enable automation or recall a
specific scene.
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UART Evaluation Board User Manual Rev. 4
2.12 External MCU Socket
UART Evaluation board is designed for use with Arduino compatible “Teensy LC” which is based on
MKL26Z64VFT4 (ARM Cortex-M0+ processor at 48 MHz, 62K Flash, 8K RAM, 12 bit analog input & output,
hardware Serial, SPI & I2C, USB, and a total of 27 I/O pins). More details can be found at
https://www.pjrc.com/teensy/teensyLC.html
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UART Evaluation Board User Manual Rev. 4
2.13 Schematic
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UART Evaluation Board User Manual Rev. 4
3. Support
If you have any questions, or need clarification please contact us at [email protected].
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UART Evaluation Board User Manual Rev. 4
4. Document revisions
Rev
Date
Editor
Changes
3
28.02.2019
IK
Changed outdated content.
2
22.11.2018
IK
Updated reference design. 3
1
21.03.2019
MI
Initial release.
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