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ESP8266

presentation for OSHCamp 2015
by

matthew venn

on 6 May 2016

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Transcript of ESP8266

antenna
ESP8266
Flash memory
crystal
typical schematic
Flash
Crystal
GPIOs
deep sleep 18uA
transmitting 70mA
3 hrs on CR2032
580 days on CR2032
deep sleep requires GPIO16 connected to reset
https://www.sparkfun.com/news/1842
Power consumption
ESP8266-01
ESP breakout family
prototyping modules
£3.91
external antenna
breadboard friendly
2MB flash
£10
onboard LIPO charger
USB serial
breadboard friendly
500k flash
Olimex MOD-WIFI
Sparkfun Thing
Adafruit Huzzah
£6.36
regulator
level translation
breadboard friendly
NodeMCU dev board
£10
USB serial
breadboard friendly
Wireless SoC supporting WPA/WPA2
~300m range
80MHz
RISC architecture
Integrated low power 32-bit MCU
SPI, UART, I2C, GPIO
Released August 2014
Espressif ESP8266
ESP-12
https://github.com/mattvenn/kicad/tree/master/esp8266-12-breakout-smt
£6 for 3xPCB (oshpark.com)
regulator
breadboard friendly
total per board inc ESP £8.80
£3.50 free postage from the UK
£2 free postage from China
11 GPIOs
FCC certified
https://github.com/mattvenn/kicad/tree/master/esp8266-12-breakout
hackspace dust sensor
MQTT galvanometer
http://www.mattvenn.net/2015/08/01/esp8266-investigation-and-an-internet-connected-galvanometer/
temperature sensor
https://github.com/mattvenn/kicad/tree/master/esp8266-temp
http://bristol.hackspace.org.uk/dust-sensor/html/graph.html
esp: 27302 / 39405 = 81%
pi: 33194 / 39405 = 90%

https://data.sparkfun.com
https://github.com/mattvenn/arduinosketchbook/tree/master/dial-guage
3.3v logic
USB serial
£3.29 UK free postage
ftdi chips supply only 50mA on 3.3v
Programming/interfacing
http://www.instructables.com/id/ESP8266-Wifi-Temperature-Logger/
ESP + Microcontroller
3.3v serial
AT instruction set
https://github.com/pfalcon/esp-open-sdk
Developing for the ESP8266
GCC toolchain (C++)
Arduino (C++/Wiring)

http://nodemcu.com/index_en.html
https://github.com/esp8266/Arduino
NodeMCU (Lua)
What?
Availability
Use/Programming
Projects
What next?
OSHCamp 2015
@matthewvenn www.mattvenn.net
ven.nz/oshcamp-esp
http://frightanic.com/nodemcu-custom-build/
https://hackaday.io/project/6456-esp8266-din-8-channel-wifi-relay-controller
8 channel relay controller
ven.nz/esp-workshop
http://github.com/mattvenn/esp8266
References, Notes & Links
AT & Arduino tutorial
can connect and send in 2ms
http://l0l.org.uk/2014/12/esp8266-modules-hardware-guide-gotta-catch-em-all/
Mirobot
http://mirobot.io/
Contact
Presentation
The button
http://benlo.com/esp8266/esp8266Projects.html
1 post per minute, started 2015-07-19T12:00
after a few months, developed a fault due to insufficient power supply.
https://hackaday.io/search?term=esp8266
765 Results for "esp8266"
ESP OSHCamp workshop

try the ESP with Lua tomorrow with Omer
35 minutes to setup, 3.5GB
2 minutes setup, 200MB
Disrupting the IoT by dominating the ESP8266 for big data and leverage of startup.
Can you spot the fake?
http://weputachipinit.tumblr.com/
Reminding you to breathe
The problem with communication is that it’s just not cryptic enough. We’ve solved that by putting a chip in a stone.
“Connecting you with your trash can like never before”
http://www.internetofuselessthings.io/
BookMk II stores your progress securely in the Cloud.
Sends condolences to your nearest and dearest when your heartbeat stops
Gamify your toilet experience

https://github.com/jeelabs/esp-link
http://blog.squix.ch/2015/06/esp8266-3d-printed-case-for-weather.html
http://analog.io/#/sH2
ESP treasure hunt
#oshcamp2015
Full transcript