[Spark Project] Steering gear tester based on HK32F030MF4P6

I made a servo debugger, which is used for ordinary servo debugging and brushless ESC testing. Its functions are basically the same as those sold online, and the cost is cheaper than those sold online. A brief introduction: The project uses HK32F030MF4P6 as the main control, inputs 5V-6V, outputs 4 PWM channels in parallel, outputs 50HZ analog servo signal (signal width 800-2200us) or 125HZ digital servo signal, automatically enters manual mode when powered on, and rotates the potentiometer The knob drives the servo by reducing or increasing the width of the signal, and the digital tube displays the signal width number at the same time. Press the "Mode Switch" button to select the servo centering and automatic rotation modes. Press the "Frequency Switch" key to select pulse width 50HZ or 125HZ output. Main
control: HK32F030MF4P6
Main hardware list:
HK32F030MF4P6 *1 0.9 yuan
0.28-inch 4-bit common anode digital tube *1 0.8 yuan
TM1637 *1 (TM1650 can also be used, the circuit can be simpler, mainly because there are too many 1637s on hand) 0.5 yuan
6x6mm Tact switch (recommended height is 11mm or above) *2 0.1 yuan
vertical two-legged turtle H2.0 tact switch*1 0.1 yuan
AMS1117-3.3 voltage regulator chip*1 0.15 yuan
AO3400*2 0.2 yuan
10k vertical adjustable potential Device*1 0.4 yuan
and some other resistors and capacitors.
 
Prices above 0.5 yuan are for reference only (PCB and casing are made by Lichuang for free and are not included in the cost. Thank you again Lichuang).