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Parameters
1 driver chip: L298N double H bridge DC motor drive chip
2 driving part terminal power supply range Vs: + 5V ~ + 35V; if need take power from plate, the power supply range of Vs:+7V to +35V
3 driving part of the peak current Io:2A
4 logic terminal power range Vss: + 5V ~ + 7V (can be + 5V electric board inside)
5 logic parts working current range: 0 ~ 36mA
6 control signal input voltage range:
  Low level: 0.3V ≤ Vin ≤ 1.5V
  High level: 2.3V ≤ Vin ≤ Vss
7 signal input voltage range:
  Low level: 0.3 ≤ Vin ≤ 1.5V (control signal.)
  High level: 2.3V ≤ Vin ≤ Vss (effective control signal)
8 the maximum power consumption: 20W (temperature T = 75 degree)
9 storage temperature: - 25 ~ 130 degree
10 drive plate size: 48mm*43mm*33mm (with fixed column and the height of the fin)
11 drive plate weight: 33g
12 other extensions: control the direction indicator light, logical part plate electric interface

Instructions for use
Stepper motor driver: onboard ENA and ENB are high level, the level is the TTL level. ENA A1 and A2 enable terminal, ENB B1 and IB2 enable terminal. BJ stepper motor end
Stepper motor control logic as shown below, one of A, B, C, D is stepping motor four coils, 1 mean current flows, 0 means no current flows. Coil connection diagram as shown below (four phase stepper motor for example)