Internet of Things teaching development board

Abstract

The utility model relates to a teaching development board for the Internet of Things. The teaching development board comprises a substrate, a control module, a driving module and a first expansion port, the control module is arranged on the substrate; the driving module is arranged on the substrate, a first input end and a second input end of the driving module are electrically connected to a first universal end and a second universal end of the control module in a one-to-one correspondence manner, and a first output end and a second output end of the driving module are used for being connected to a motor; the first expansion port is arranged on the substrate, and the input end of the first expansion port is electrically connected to the second universal end of the control module. According to the utility model, the driving module is matched with the control module, so that conventional driving can be realized. And data accessed to the sensor and the controlled device can be increased through the first expansion port, so that the utilization rate of the control module can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the development board technical field, concretely relates to a thing networking teaching development board. BACKGROUND

[0002] As a popular tool in the field of hardware design and engineering development, the development board has been widely concerned by students, technical experts and product developers. In order to help these groups quickly master the development board technology, special learning development boards, also known as experimental boards, have appeared on the market.

[0003] At present, the modules of the development board are usually pre-configured, lacking scalability. In the process of teaching, the potential of learners to comprehensively explore the functions of the development board is limited, thereby reducing the diversity of experiments and causing the functions of the control module to be idle. UTILITY MODEL CONTENT

[0004] Based on the above description, the utility model provides a thing networking teaching development board, aiming at solving the problem of weak scalability of the existing thing networking teaching development board.

[0005] The technical scheme for solving the above technical problem of the utility model is as follows:

[0006] A thing networking teaching development board comprises:

[0007] a substrate;

[0008] a control module arranged on the substrate;

[0009] a driving module arranged on the substrate, wherein the first input end and the second input end of the driving module are electrically connected to the first universal end and the second universal end of the control module one by one, and the first output end and the second output end of the driving module are used for connecting to a motor;

[0010] a first expansion port arranged on the substrate, wherein the input end of the first expansion port is electrically connected to the second universal end of the control module.

[0011] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0012] Further, the driving module comprises a switch and a driving chip, the first pin of the switch serves as the first input end of the driving module, the second pin of the switch serves as the second input end of the driving module, the second pin and the third pin of the driving chip are electrically connected to the fourth pin and the third pin of the switch one by one, the eighth pin of the driving chip serves as the first output end of the driving module, and the seventh pin of the driving chip serves as the second output end of the driving module.

[0013] Further, a serial port download module is arranged on the substrate, and the first output end and the second output end of the serial port download module are electrically connected to the first general end and the second general end of the control module in one-to-one correspondence.

[0014] Further, a key module is arranged on the substrate, and the first output end and the second output end of the key module are electrically connected to the first input end and the third input end of the control module in one-to-one correspondence.

[0015] Further, a second expansion port is arranged on the substrate, and the input end of the second expansion port is electrically connected to the second general end of the control module.

[0016] Further, a display module is arranged on the substrate, and the second input end and the first input end of the display module are electrically connected to the first output end and the second output end of the control module in one-to-one correspondence.

[0017] Further, a power supply module is arranged on the substrate, and the power supply module is used for supplying power to each module and each expansion port.

[0018] Further, the power supply module comprises a first power supply unit, the first power supply unit comprises a voltage regulator and a fast recovery diode, the anode of the fast recovery diode is electrically connected to the second pin of the voltage regulator, and the cathode of the fast recovery diode serves as a power supply end.

[0019] Further, the first power supply unit comprises a first capacitor filter circuit, the input end of the first capacitor filter circuit is connected in parallel between the second pin of the fast recovery diode and the anode of the fast recovery diode, and the output end of the first capacitor filter circuit is grounded.

[0020] Further, the power supply module comprises a second capacitor filter circuit, and the output end of the second capacitor filter circuit is electrically connected to the third pin of the voltage regulator.

[0021] Compared with the prior art, the technical scheme of the present application has the following beneficial technical effects:

[0022] (1) The utility model discloses a drive module and control module cooperate, can realize conventional drive. And through the first expansion port can increase the data of access sensor and controlled device, thereby can promote the utilization rate of control module.

[0023] (2) The utility model discloses when the first expansion port accesses sensor or other controlled device, switch off, make control module and drive chip between break, prevent voltage fluctuation and produce interference to drive chip.

[0024] (3) The utility model discloses a serial port download circuit is with program downloaded to the memory of control module, thereby make control module realize corresponding logic processing. Such can ensure the flexibility of control module, realize the on -line programming and debugging of program. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the circuit connection diagram of a kind of Internet of Things teaching development board provided in the utility model embodiment;

[0026] Figure 2 It is the circuit schematic diagram of control module in the utility model embodiment;

[0027] Figure 3 It is the circuit schematic diagram of drive module in the utility model embodiment;

[0028] Figure 4 It is the circuit schematic diagram of first extension port in the utility model embodiment;

[0029] Figure 5 It is the circuit schematic diagram of serial port download module in the utility model embodiment;

[0030] Figure 6 It is the circuit schematic diagram of key module in the utility model embodiment;

[0031] Figure 7 It is the circuit schematic diagram of second extension port in the utility model embodiment;

[0032] Figure 8 It is the circuit schematic diagram of display module in the utility model embodiment;

[0033] Figure 9 It is the circuit schematic diagram of power supply module in the utility model embodiment;

[0034] Figure 10 It is the front view of a kind of Internet of Things teaching development board provided in the utility model embodiment;

[0035] Figure 11 It is the rear view of a kind of Internet of Things teaching development board provided in the utility model embodiment.

[0036] Reference Signs Description:

[0037] 1, base plate;

[0038] 2, control module;

[0039] 3, drive module;31, drive chip;32, switch;

[0040] 4, first extension port;

[0041] 5. Serial port download module; 51. Conversion circuit; 52. Automatic download circuit;

[0042] 6. Button module; 61. Reset unit; 611. First resistor voltage divider circuit; 612. Reset button; 62. Start unit; 621. Second resistor voltage divider circuit; 622. Start button;

[0043] 7. Second expansion port;

[0044] 8. Display module;

[0045] 9. Power supply module; 91. First power supply unit; 911. First voltage regulator; 912. Fast recovery diode; 913. Indication circuit; 9131. Light-emitting diode; 9132. Resistor; 914. First capacitor filter circuit; 92. Second capacitor filter circuit; 921. Second capacitor; 93. Switch button; 94. Second power supply unit. Detailed Implementation

[0046] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0048] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0049] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0050] Reference Figures 1-4 As shown in Figures 10 and 11, this utility model provides a technical solution: an Internet of Things (IoT) teaching development board, comprising a base plate 1, a control module 2, a drive module 3, and a first expansion port 4; the control module 2 is disposed on the base plate 1; the drive module 3 is disposed on the base plate 1, and the first input terminal and the second input terminal of the drive module 3 are electrically connected to the first general-purpose terminal and the second general-purpose terminal of the control module 2 in a one-to-one correspondence, and the first output terminal and the second output terminal of the drive module 3 are used to connect to a motor; the first expansion port 4 is disposed on the base plate 1, and the input terminal of the first expansion port 4 is electrically connected to the second general-purpose terminal of the control module 2.

[0051] For example, the control module 2 can be an ESP-12F (ESP8266MOD), etc.

[0052] In this embodiment, the first general-purpose terminal and the second general-purpose terminal can serve as motor control terminals. The control module 2 sends drive signals to the drive module 3, enabling the drive module 3 to control the motor operation according to the drive signals. The first general-purpose terminal and the second general-purpose terminal can be input terminals or output terminals. The first expansion port 4 is connected to sensors or other controlled devices to realize data reception or control functions, thereby improving the utilization rate of the control module 2.

[0053] Reference Figure 3 As shown, in some embodiments, the driving module 3 includes a switch 32 and a driving chip 31. The first pin of the switch 32 serves as the first input terminal of the driving module 3, the second pin of the switch 32 serves as the second input terminal of the driving module 3, the second pin and the third pin of the driving chip 31 are electrically connected to the fourth pin and the third pin of the switch 32 respectively, the eighth pin of the driving chip 31 serves as the first output terminal of the driving module 3, and the seventh pin of the driving chip 31 serves as the second output terminal of the driving module 3.

[0054] For example, the model of the toggle switch 32 can be SW-2P, etc. The model of the driver chip 31 can be DRV8870DDAR, etc.

[0055] In this embodiment, when the first expansion port 4 is connected to a sensor or other controlled device, the switch 32 is turned off, disconnecting the control module 2 from the drive chip 31 to prevent voltage fluctuations from interfering with the drive chip 31.

[0056] Reference Figure 1 , 5 As shown in Figures 10 and 11, in some embodiments, the IoT teaching development board includes a serial port download module 5, which is disposed on the substrate 1. The first output terminal and the second output terminal of the serial port download module 5 are electrically connected to the first general terminal and the second general terminal of the control module 2 in a one-to-one correspondence.

[0057] In this embodiment, the user can download the program into the memory of the control module 2 via a serial port download circuit, thereby enabling the control module 2 to perform corresponding logic processing. This ensures the flexibility of the control module 2 and enables online programming and debugging of the program.

[0058] Reference Figure 5 As shown, in some embodiments, the serial port download module 5 includes a conversion circuit 51 and an automatic download circuit 52. The first input terminal and the second input terminal of the automatic download circuit 52 are electrically connected to the second output terminal and the first output terminal of the conversion circuit 51 in a one-to-one correspondence. The first output terminal of the automatic download circuit 52 serves as the first output terminal of the serial port download module 5, and the second output terminal of the automatic download circuit 52 serves as the second output terminal of the serial port download module 5.

[0059] In this embodiment, the conversion circuit 51 performs USB to TTL conversion to facilitate the control module 2 in parsing the user-input program code. After completing the USB to TTL conversion, the automatic download circuit 52 changes the voltage levels of its first and second output terminals.

[0060] Reference Figure 1 and 10 As shown, in some embodiments, the Internet of Things teaching development board includes a button module 6, which is disposed on the substrate 1. The first output terminal and the second output terminal of the button module 6 are electrically connected to the first input terminal and the third input terminal of the control module 2 in a one-to-one correspondence.

[0061] In this embodiment, the button module 6 sends a reset signal and a start signal to the control module 2 to control the reset and start / stop of the Internet of Things teaching development board.

[0062] Reference Figure 6As shown, in some embodiments, the button module 6 includes a reset unit 61 and a start unit 62. The reset unit 61 includes a first resistor voltage divider circuit 611 and a reset button 612. The output terminal of the first resistor voltage divider circuit 611 serves as the first output terminal of the button module 6. One end of the reset button 612 is electrically connected to the input terminal of the first resistor voltage divider circuit 611. The start unit 62 includes a second resistor voltage divider circuit 621 and a start button 622. The output terminal of the second resistor voltage divider circuit 621 serves as the second output terminal of the button module 6. One end of the start button 622 is electrically connected to the input terminal of the second resistor voltage divider circuit 621. The other ends of the reset button 612 and the other ends of the start button 622 are both grounded.

[0063] In this embodiment, when the reset button 612 is pressed, the voltage divider circuit 611 generates a reset signal that meets the threshold requirement at the first input terminal of the control module 2, causing the control module 2 to perform a reset operation or the serial port download module 5 to stop downloading. When the start button 622 is pressed, the voltage divider circuit 621 generates a start signal that meets the threshold requirement at the second input terminal of the control module 2, causing the control module 2 to start downloading via the serial port download module 5.

[0064] Reference Figure 6 As shown, in some embodiments, the start unit 62 includes a capacitor connected in parallel between the third general terminal of the control module 2 and the other end of the start button 622.

[0065] In this embodiment, when the start button 622 is pressed, the capacitor stabilizes the voltage through the charging and discharging process, enabling the start unit 62 to work smoothly.

[0066] Reference Figure 1 and 7 As shown, in some embodiments, the IoT teaching development board includes a second expansion port 7, which is disposed on the substrate 1, and the input terminal of the second expansion port 7 is electrically connected to the second general terminal of the control module 2.

[0067] In this embodiment, the second expansion port 7 can increase the number of connected sensors or other controlled devices so that the control module 2 can be fully utilized.

[0068] Reference Figure 1 and 8 As shown, in some embodiments, the IoT teaching development board includes a display module 8, which is disposed on the substrate 1. The second input terminal and the first input terminal of the display module 8 are electrically connected to the first output terminal and the second output terminal of the control module 2 in a one-to-one correspondence.

[0069] In this embodiment, the display module 8 can display the operating status of the motor, etc., to facilitate operation by staff.

[0070] Reference Figure 1 and 9 As shown in ~11, in some embodiments, the Internet of Things teaching development board includes a power supply module 9, which is disposed on the substrate 1 and is used to supply power to each module and each expansion port.

[0071] Reference Figure 9 As shown, in some embodiments, the power supply module 9 includes a first power supply unit 91, which includes a voltage regulator and a fast recovery diode 912. The positive terminal of the fast recovery diode 912 is electrically connected to the second pin of the voltage regulator, and the negative terminal of the fast recovery diode 912 serves as the power supply terminal.

[0072] For example, the voltage regulator model could be AS2830AT, etc.

[0073] In this embodiment, when the voltage regulator outputs the supply voltage, the fast recovery diode 912 can perform reverse voltage clamping, anti-backflow, and high-frequency freewheeling, thereby preventing damage to the voltage regulator.

[0074] Reference Figure 9 As shown, in some embodiments, the first power supply unit 91 includes a prompting circuit 913, which includes a light-emitting diode 9131 and a resistor 9132. The positive terminal of the light-emitting diode 9131 is connected in parallel between the second pin of the fast recovery diode 912 and the positive terminal of the fast recovery diode 912. One end of the resistor 9132 is electrically connected to the negative terminal of the light-emitting diode 9131, and the other end of the resistor 9132 is grounded.

[0075] In this embodiment, when the voltage regulator is powered, the LED 9131 is turned on and emits light, which can remind the user that the power supply module 9 is in a normal power supply state. At the same time, the resistor 9132 can play a current limiting role during this period, on the one hand to prevent the LED 9131 from burning out due to overcurrent, and on the other hand to prevent the voltage regulator from being damaged due to output short circuit or overload.

[0076] Reference Figure 9 As shown, in some embodiments, the first power supply unit 91 includes a first capacitor filter circuit 914. The input terminal of the first capacitor filter circuit 914 is connected in parallel between the second pin of the fast recovery diode 912 and the positive terminal of the fast recovery diode 912, and the output terminal of the first capacitor filter circuit 914 is grounded.

[0077] In this embodiment, the voltage regulator performs layered filtering and optimizes transient response through the first capacitor filter circuit 914 to enhance the stability of the power supply voltage and ensure that the voltage regulator outputs a clean and reliable power supply voltage.

[0078] Reference Figure 9As shown, in some embodiments, the power supply module 9 includes a second capacitor filter circuit 92, the output of which is electrically connected to the third pin of the voltage regulator.

[0079] In this embodiment, when the power supply inputs power voltage to the voltage regulator, the second capacitor filter circuit 92 filters the power supply voltage to prevent voltage fluctuations from damaging the voltage regulator.

[0080] Reference Figure 9 As shown, in some embodiments, the power supply module 9 includes a switch button 93, one end of which is electrically connected to the input terminal of the second capacitor filter circuit 92.

[0081] In this embodiment, the power supply and the second capacitor filter circuit 92 can be turned on or off by the switch button 93.

[0082] Reference Figure 9 As shown, in some embodiments, the power supply module 9 includes a second power supply unit 94, the structure of which is the same as that of the first power supply unit 91.

[0083] For example, the voltage regulator of the second power supply unit 94 can be a model such as 7805CD2T.

[0084] In this embodiment, the first power supply unit 91 can provide 3.3V power supply, and the second power supply unit 94 can provide 5V power supply.

[0085] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An Internet of Things teaching development board, characterized in that, The application relates to a control module for a motor, which comprises the following parts: a substrate (1); a control module (2) arranged on the substrate (1); a driving module (3) arranged on the substrate (1), wherein the first input end and the second input end of the driving module (3) are electrically connected to the first universal end and the second universal end of the control module (2) in a one-to-one correspondence, and the first output end and the second output end of the driving module (3) are used for connecting to a motor; a first expansion port (4) arranged on the substrate (1), wherein the input end of the first expansion port (4) is electrically connected to the second universal end of the control module (2).

2. The IoT educational development board of claim 1, wherein, The driving module (3) comprises a switching switch (32) and a driving chip (31), the first pin of the switching switch (32) is used as the first input end of the driving module (3), the second pin of the switching switch (32) is used as the second input end of the driving module (3), the second pin and the third pin of the driving chip (31) are electrically connected to the fourth pin and the third pin of the switching switch (32) in a one-to-one correspondence, the eighth pin of the driving chip (31) is used as the first output end of the driving module (3), and the seventh pin of the driving chip (31) is used as the second output end of the driving module (3).

3. The IoT educational development board of claim 1, wherein, The application further comprises a serial port download module (5), wherein the serial port download module (5) is arranged on the substrate (1), and the first output end and the second output end of the serial port download module (5) are electrically connected to the first universal end and the second universal end of the control module (2) in a one-to-one correspondence.

4. The IoT educational development board of claim 1, wherein, The application further comprises a key module (6), wherein the key module (6) is arranged on the substrate (1), and the first output end and the second output end of the key module (6) are electrically connected to the first input end and the third input end of the control module (2) in a one-to-one correspondence.

5. The IoT educational development board of claim 1, wherein, The application further comprises a second expansion port (7), wherein the second expansion port (7) is arranged on the substrate (1), and the input end of the second expansion port (7) is electrically connected to the second universal end of the control module (2).

6. The IoT educational development board of claim 1, wherein, The application further comprises a display module (8), wherein the display module (8) is arranged on the substrate (1), and the second input end and the first input end of the display module (8) are electrically connected to the first output end and the second output end of the control module (2) in a one-to-one correspondence.

7. The IoT educational development board of any one of claims 1-6, wherein, The application further comprises a power supply module (9), wherein the power supply module (9) is arranged on the substrate (1), and the power supply module (9) is used for supplying power to each module and each expansion port.

8. The IoT educational development board of claim 7, wherein, The power supply module (9) comprises a first power supply unit (91), the first power supply unit (91) comprises a voltage regulator and a fast recovery diode (912), the anode of the fast recovery diode (912) is electrically connected to the second pin of the voltage regulator, and the cathode of the fast recovery diode (912) is used as a power supply end.

9. The IoT educational development board of claim 8, wherein, The first power supply unit (91) comprises a first capacitor filter circuit (914), the input end of the first capacitor filter circuit (914) is connected in parallel between the second pin of the fast recovery diode (912) and the anode of the fast recovery diode (912), and the output end of the first capacitor filter circuit (914) is grounded.

10. The IoT educational development board of claim 9, wherein, The power supply module (9) comprises a second capacitive filter circuit (92), and an output end of the second capacitive filter circuit (92) is electrically connected to a third pin of the voltage regulator.

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