Brother clamour for mother buy toys everyday, so I think just do your own play a phone APP remote control car to him (isn't that all the big brother should do for his brother!)

Contents include:

Buy car chassis (optional)
Esp12f (8266)
L298N motor driver module
18650 battery
Motor (here I only took 2)
Involved in the content:

PWM (pulse width modulation)
8266 connection ali cloud MQTT server
The MQTT protocol on
Java multi-thread
App MQTT link
Written with Android App Studio, overall is relatively easy to use, source address, https://gitbook.cn/gitchat/activity/6016e1a6bc59d71b294d3ffb