Product Name: simple controller The original function of this controller remains unchanged, and the function of generating PWM signal is added. There is a needle skipping on the board, which can be set and selected. By default, it is set at the position of generating pulse frequency signal. Req is to generate pulse frequency signal PWM is to generate PWM signal L * w * H: about 73 * 51 * 37mm 1、 Product Descriptions:1. When the controller generates pulse frequency signal, it can supply step driver as signal. To control the stepper motor, you must also have a driver. This simple controller + step driver + stepping motor + DC power supply can form a simple control platform. 2. The controller can generate pulse frequency signal or PWM pulse width signal. There is a jumper on the board, which can be set to select. By default, it is set to generate pulse frequency signal. Req is to generate pulse frequency signal PWM is to generate PWM signal 3. When the controller generates pulse frequency signal, there are three kinds of frequency signals, which are high, medium and low, which can be selected by jumping needle. The frequency parameters are about: Height: 5.8khz-127khz Medium: 590hz-15.8khz Low: 82hz-2.3khz, Frequency measurement: it can measure two ports of pul and GND. 4. There are two groups of power input for power supply, and only one group of power supply is used for two groups. It is recommended to use more than 15V power supply. If it is connected to the power supply of 2-bit terminals, the positive and negative power supply should not be reversed One group is the power supply connected to DC 15-160vdc, and it is recommended that the working voltage be 15-80vdc. The other group is 5-12vdc. When used with the driver, it is recommended to use 12V at least, not 5V power supply, not too much at 5V, positive connection of power supply "5-12v in", negative connection of power supply to "commo