Article

GoNotify, a Flexible IoT Sensor Interface

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Labs Project

Based on a Labs project | December 2016 | Find it here

IoT; the Internet of Things; IIoT, connected devices, fridges… we keep hearing a lot about it. Industry watchers predict a huge market and billions of connected devices in a few years’ time, but you still have to walk over to a wall-mounted switch to turn on a light in your home. Now those dark days are over, because with GoNotify you too can connect whatever you like to the Internet.

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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.

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PCB

Download Gerber file: 160333-1-v5-gerber.zip

Extra info / Update

* Universal wireless sensor interface
* Supports Wi-Fi and ESP-Now
* Ultra low-power
* Arduino compatible
* Grove compatible

Component list

From the Store
160333-1: GoNotify PCB, unpopulated
160333-41: ATmega328PB microcontroller with bootloader
Component List
Resistors
Default: 1206
R1,R5,R11 = 1kOhm
R2,R7,R8,R12 = 47kOhm
R3 = 976kOhm*
R4 = 562kOhm*
R6 = 56Ohm
R9,R10 = 4.7kOhm
R13 = 100kOhm
R15,R16 = 27Ohm
Capacitors
C1,C3,C5 = 10µF 16V, tantalum, 1206
C2 = 100µF 6.3V, tantalum, 1206
C4,C7,C10,C11 = 100nF, 0805
C6 = 1µF, 16V, tantalum, 1206
C8,C9 = 47pF, 0805
Inductors
L1 = 4.7µH, Irms=1.72A, 0.082Ohm
Semiconductors
D1 = BAT760
LED1 = green, 2012
T1,T3,T4 = NTS2101PT1G
T2 = 2N7002
IC1 = ATmega328PB-AU
IC2 = MCP1642D-ADJ*
IC3 = NCP1117ST33T3G
IC4 = FT230XS
Divers
BUZ1 = buzzer, 12mm diameter, 6.5mm pitch
K1 = 2-pin pinheader, 0.1" pitch
K2 = 8-pin (2x4) pinheader, 0.1" pitch
K3 = Micro USB Type AB connector
K4 = 8-way (2x4) pinheader socket, 0.1" pitch
K5 = 6-way miniature DIN socket or 4-way Grove connector*
RE1 = reed switch, glass length 15mm max.
SW1,SW2 = tactile switch, SMT, 6.2x6.2mm
Miscellaneous
Battery holder, 2x AA (Keystone 2462)
ESP-01S ESP8366 Wi-Fi module
PCB # 160333-1
* see text