HiLetgo 41F/0H41/SH41/SS41F/S41 Bipolar Hall Effect Sensors for Electric Motors (Pack of 20PCS) B00HJF6620
HiLetgo New Version ESP8266 NodeMCU LUA CP2102 ESP-12E Internet WiFi Development Board Open Source Serial Wireless Module Works Great with Arduino IDE/Micropython $9.49 B010O1G1ES