1. Remote Sensor Interface for IoT
Martin Hutchins
Nicholas O’Dell
Joe Cooper

2. Scope
Goal: A low-cost remote interface to the Internet of Things via a Raspberry Pi Zero and an AVR

3. IoT Device List
Raspberry Pi zero
Atmel AVR
ATTINY85

4. Deliverables Simple interface for digital, analog, SPI, and I2C I/O
Remote access and control
Solar power with battery
Notification system
Self test feature
Protective case
Dual platform:
Raspberry Pi
AVR

5. Other Components MCP3008 (Analog-to-Digital Converter) for the Pi Zero
LM75 Temperature sensor -> I2C device
TSOP-382(IR Receiver) -> to communicate with the AVR
R Solar Panel
UB v Battery, 5Ah

7. Notification System Research, design and test
Reports system information to user
Self Test Feature - Checks the hardware and the system and reports results to user

8. Remote Interfaces WhatsApp - SMS Twitter - Mass communication
Web page - General information/interfacing

9. Protective Case
After the assembly of all the components a protective case will be designed.
3D print case

10. Troubleshooting Main issues AVR->Space issues
Connecting through Arduino ISP
Alternatively used the tiny programmer
IR receiver -> AVR
Issues with using libraries
Ported I2C code from Arduino to AVR

11. Accomplishments Get RPi working with SPI, ADC, I2C
Get Arduino working with SPI, I2C, IR
Transfer to AVR
Circuit designed, PCB fabricated
Solar panel and battery researched and sourced
RPi remote communication researched

16. Further Steps Look into more AVR’s Transfer data from PI 3 to Zero
Assemble circuit
Incorporate the solar panel and battery
Test circuit, revise as necessary
Competitor comparison
Market research

17. Questions?