Wifi Modules ESP8266 Node MCU WeMos Witty for Arduino and Raspberry Pi pyboard Micro python

02 euro ESP8266 serial WIFI module adapter plate

04 euro WeMos D1 min Proto board adaptor

05 euro WeMos D1 min Base plate adaptor

10 euros NodeMCU Motor Shield Board L293D

15 euro New version ESP-12E (replace ESP-12) ESP8266 remote serial Port WIFI

15 euro New version ESP-12F (STM8 controller inside) ESP8266 remote serial Port WIFI

18euro New ESP-WROOM-02 (low power 32 bit) wifi module with 10bit ADC remote serial Port WIFI

18 euro D1 mini - Mini NodeMcu 4M bytes Lua WIFI Internet of Things development board based ESP8266 WeMos

18 euro Smart Electronics ESP8266 serial WIFI Witty cloud Development Board ESP-12F module MINI nodemcu

18 euro V3 4M bytes (32Mbits) FLASH NodeMcu Lua WIFI Networking development board Based ESP8266

18euro WeMos Shield
http://www.adverts.ie/other-electronics/wemos-d1-esp8266-shield-robot-motor-control/13339001

30euro ESP 32 WiFi+Bluetooth Ultra-Low Power Consumption
http://www.adverts.ie/other-electronics/esp-32-wifi-bluetooth-esp8266-ardunio/13139410?notification=a4c75088cf150eaac4c7da6eb8d83371-1497520454

Arduino UNO MEGA Leonardo Duemilanove
http://www.adverts.ie/other-electronics/arduino-uno-mega-leonardo-duemilanove/11153588

More cheap boards
http://www.adverts.ie/other-electronics/arduino-pro-mini-atmega-boards/10952659

Wireless Modules
http://www.adverts.ie/other-electronics/nrf24l01-433mhz-rf-wireless-module-arduino-raspberry-pi/10894925

LCD modules
http://www.adverts.ie/other-electronics/lcd-modules-for-arduino-and-raspberry-pi/11153649

#pyboard
Micro Python