SDR1064-dat
Info
product url - NodeMCU Motor Drive L293D Shield, WifiCar
Applications, category, tags, etc.
Board map
- Motor Power Supply - VM (V_motor)
- Board Power Supply - VIN
Input Pins: SD2, SD3, IO8, IO7, IO6, IO5, IO4, IO3, IO2, IO1, IO0
Motor Control: Phase_A, Phase_B, VIN, V_Motor
Pins
| nodemcu | right | func1 | func2 | SDR1064-dat |
|---|---|---|---|---|
| D0 | I016 | USER | WAKE | |
| D1 | I05 | PWM_A | ||
| D2 | I04 | PWM_B | ||
| D3 | I00 | FLASH | Motor_1 | |
| D4 | I02 | TXD1 | Motor_2 | |
| 3.3V | ||||
| GND | ||||
| D5 | I014 | HSCLK | ||
| D6 | I012 | HMISO | ||
| D7 | I013 | RXD2 | HMOSI | |
| D8 | I015 | TXD2 | HCS | |
| D9 | I03 | RXDe | ||
| D10 | I01 | TXDE | ||
| GND | ||||
| 3.3V |
Shield setup
- Motor power supply (VM): 4.5V ~ 36V, can be powered separately
- Nodemcu Control power (VIN): 4.5V ~ 9V (10VMAX), can be powered separately
- Logic Operating current Iss: ≤60mA (Vi = L), ≤22mA (Vi = H)
- Driver IC: L293, drive = PWM (Pulse Wide Modulation)
- Drive part of the work current Io: ≤1.2A
- Maximum power dissipation: 4W (T = 90 ℃)
- Control signal input level: High: 2.3V≤VIH≤VIN; Low: -0.3V≤VIL≤1.5V
- ESP12E Dev Kit Control Port:
- GPIO0: Motor DirA, Button FLASH; GPIO5: Motor PWMA
- GPIO2: Motor DirB; GPIO4: Motor PWMB
- The screw terminal is labeled with the signal names.
- The push button switch connects VIN to the board.
Demo Code and Video
SDR1064 drive hacked toy rover by #esp8266
ESP8266: NodeMCU Motor Shield Review
Demo code JS Web Control
It is not simple to setup the WiFiCar with the provided software. You should have good knowledge of network handling, and Arduino and C programming.
- Install the Arduino IDE (Integrated Development Environment) and the ESP8266 plugin Links #17 for programming the NodeMCU.
- With Arduino IDE upload my program wifi-car-AP.ino (Access Point mode) to the NodeMCU of the car.
- Power Up the NodeMCU, and try to find the WiFi hotspot (name: wifi-car) on IP address 192.168.4.1.
- Upload the provided JavaSript program wifi-carAP.js to the NodeMCU, via the URL http://192.168.4.1/upload (you will be asked for the File name/path). #With an Android Smartphone connect with WLAN to the WiFicar Hotspot (name: wifi-car).
- Enter in your Web browser the URL http://192.168.4.1 . A HTML file is loaded (embedded in the C program) and the Java script file is loaded and executed.
- As soon, as you tilt the smartphone, the WiFicar will move in that direction.
- You should be able to see the interface similar to the right.
