Board Pin setup
The WiFi-car signals are also mentioned.
| Functio Description |
PWM_A |
Motor PWM_B |
Dir_A |
Dir_B |
EN |
RST |
3V3 |
GND
|
| NodeMCU Pin |
D1 |
D2 |
D3 |
D4 |
EN |
RST |
3V3 |
GND
|
| ESP8266 Pin |
IO4 |
IO5 |
IO0 |
IO2 |
EN |
RST |
3V3 |
GND
|
| Other Pin |
VM |
A+, A- |
B+, B- |
VIN
|
| Description |
- Motor Power Supply Only
- You can power motor alone
- (VM): 4.5V ~ 36V
|
Motor Control A |
Motor Control B |
- Power for Motor or|and Nodemcu Board
- Select by switch and jumper
- (VIN): 4.5V ~ 9V (10VMAX), If motor power over 9V, you should use VM power alone, otherwise will burn
|
| Configuration |
Description
|
| Jumper ( VIN->VM<-NC) |
Select VIN power for Motor VM power or not
|
| Switch (VIN->NodeMCU) |
Turn on / off power for control board nodemcu or not
|
| Lead out pin - digital IO |
Lead out pin - analog IO |
Lead out pin - digital IO |
SPI
|
| D0, D5-D8 |
A0, AD |
SD2, SD3 |
SD1, CMD, SD0, CLK
|
| IO16, IO 14,12,13,15 |
Analog sampling input, and output (=A0/330*100) |
IO9, IO10 |
-
|
Reference