As a tool, the agency has been widely used in various intelligence and knowledge contest. However, the frequency of use of the testor is low, and some either makes complex, or if reliability is low. As a unit, if you can buy a snapper, although it is economically tolerated, it is extremely used, often due to long-term storage (electronic devices), the trouble and timeliness of the purchase will affect The event is carried out, so this trick is designed.
1, DIY design 8 road trick free download
The 8-channel-controller uses STC89C52 (STC89C52 Data Manual) single chip microcomputer as the main control chip, circuit hardware part design includes: 51 single-chip minimum control system, power interface and instructions, common male digital tube display and buzzer control circuit, etc.
The main functions of the 8-way japome are as follows:
(1) The answer is used for 8 players or 8 team competitions at the same time, respectively, with 8 buttons S0 ~ S7.
(2) Set a system cleanup and answering control switch S, which is controlled by the host. Be
(3) The snapper has a latch and display function. That is, the player is pressing the button, latches the corresponding number and displays on the LED digital tube while the speaker issues alarm sound prompt. The player's answer to the priority latitude, and the number of priority answers has been kept until the moderator clears the system.
(4) The snapper has a timed-answering function, and the time a war is set by the host (such as 30 seconds). When the moderator starts the "Start" button, the timer is subtracted, and the speaker makes a short sound, the sound lasts for about 0.5 seconds.
Scenario: https://www.cirmall.com/circuit/1874
2. Design of intelligent aircraft based on 51 single-chip microcomputer
Project requirements:
(1) Function that enable 16 players (number 1-16)
(2) The host is valid after 9S after the start button, and after the end of the 9S, the answer is ended. If no one answers, the countdown display belongs to 0; until the host announces the next round
(3) To show the number of successful players and answering countdown
(4) In the answer time, one but someone will be successful, others will be invalid.
(5) One but someone is successful, the alarm prompt
(6) Complete related hardware design and production and software debugging
Program implementation:
(1) Single chip micrometer model selection STC89C52 as a controller
(2) The answer button uses a 4 × 4 matrix keyboard to form a 10 answer number (1-16)
(3) A independent button to realize the host announcement to start the answer button
(4) A four-digit co-junction digital tube, the first two digits used to display the number of answers, the third display '-', the fourth display countdown
(5) Using buzzer to achieve a successful alarm
Scenario: https://www.cirmall.com/circuit/10224
3. Based on STM32 single-chip knock controller Proteus simulation (schematic + source)
STM32 single-chip tapping design
This design is composed of STM32F103 microcontroller circuit + LCD1602 liquid crystal display circuit +8 button circuitry + prompt light + sound prompt.
1. After the system is powered on, the LCD1602 liquid crystal display the first key to press the corresponding reference numeral. The first button is pressed first, then the liquid crystal is displayed 1. The second button is pressed first, then the liquid crystal is displayed 2. The third button is pressed first, then the liquid crystal is displayed 3. The fourth button is pressed first, then the liquid crystal is displayed 4. The fifth button is pressed first, then the liquid crystal is displayed 5. . . . . . Or until 8.
2. LCD can only display 1 number.
3, the moderator button is pressed and starting a new round of answers.
4. Responding to the success and sound tips.
The Proteus software version is 8.9, and the software download address is provided.
Scenario: https://www.cirmall.com/circuit/17619
4,51 single-chip eight road rimer alarm system (PCB + source + circuit diagram + reference document)
Product function description:
This system is composed of STC89C52 microcontroller core, 4-bit digital tube display, button control, buzzer control, and power supply.
1. Button Description: From the up to the lower reset button, the host key, set the key. The lowermost row button is the 8th player button, from left to right 1 to 8 players.
2, when the moderator does not press the button, if the player presses the button, it is considered a violation, and the number of "ff" and illegal players will be displayed on the digital tube and the buzzer alarm prompt.
3, when the moderator presses the button, the answer begins, the system will automatically count down, in 30 seconds If there is a player presses the button, the digital tube will correspond to the number of the player and the remaining time, in The last 5s buzzer that is warning will make a sound prompt.
4. Press the setting button to set the answer time, then press the No. 8 and 7 key to add subtraction and subtraction, and have power-down save function.
5. When you answer once, press the reset button, press the host key, you can start answering from the new.
Scenario: https://www.cirmall.com/circuit/17924
5, STM32 wireless answers (original)
Principle:
The wireless responses use STM32F103Zet6 (STM 32F103Zet6 Data Manual) chip master, while using Bluetooth Modules HC-05, Voice Module ISD1760 (ISD1760 Manual), digital tube, colorful light and other components, when the host presses the answer button When the digital tube enters inverse, the player is ready, when the digital tube is changed from 9 to 0, multiple players will be acknowledged by the virtual button on the mobile phone, and the voice broadcast is the answer, and the player's answer is displayed on the display.
Features:
Function 1, the wireless responder can be used at the same time for eight sets of answers, and the eight buttons of the remote control uses 1-8 numbers.
Function 2, the answer has a timed answering function. The countdown time is set by the moderator by pressing the button S1, at the same time, when the timer is subtracted, and displayed on one digit tube, when the digital tube is reduced
When it is displayed as zero, while the red light turns green light, the player will answer.
Function 3, the snapper has a latch and display function, when the player presses the virtual button on the phone, the system immediately locks the player label, voice broadcast.
Function 4, the snapper has wireless remote control. The player, the host is operated by wireless.
Function 5, the snapper has a voice broadcast function. After the buzzer alarm 10s, the voice broadcast system will broadcast "****" will be successful, and the answer is over. "
Function 6, the answer has the display of the player's answer time. When the player grabbed, the display will synchronize the answering time of the player, while the player's corresponding LED light is on.
application:
The answer to the entertainment activities such as some organizations such as schools, radio stations, but there are not many choices, some are too complicated, difficult, and some are too expensive, and cannot achieve economic practical purposes. Both the high-level answers can display the number of the answering player, but can not automatically report the number, show the player's answer time, and can not realize the wireless answer, can not get rid of the wired inconvenience, and not fully reflect the fair and fairness of the game, we STM32-based wireless answers can achieve the above functions, making the competition transparent, more just, better for competition services.
Scenario: https://www.cirmall.com/circuit/1298
6, classic eight road rugging machine design, course design work, information sharing
This is the course design for 51, teacher asking for a semester. The host presses the beginning of the button, the indicator is on, and the eight people start answering. After the answer is successful, the corresponding people's lights are on, indicating the light, at this moment, the other people can no longer answer, the two digital tubes start countdown by 30 seconds, countdown to 0 After the buzzer, the countdown time of the two digital tubes can also be set by themselves, controlled by two buttons, a control ten-bit plus, one control bit.
Program link: https://www.cirmall.com/circuit/9607
7. Based on STM32 single-chip warning time display design [full information]
This design consists of STM32F103C8T6 microcontroller circuit + LCD1602 liquid crystal display circuit +5 key circuit.
1. After the system is powered on, the LCD1602 liquid crystal display the first key to press the corresponding reference numeral. The first button is pressed first, then the liquid crystal is displayed 1. The second button is pressed first, then the liquid crystal is displayed 2. The third button is pressed first, then the liquid crystal is displayed 3. The fourth button is pressed first, then the liquid crystal is displayed 4. The fifth button is pressed first, then the liquid crystal is displayed 5.
2. LCD can only display 1 number.
3, unless the system is powered up again or presses the reset button, start a new round of answers.
Scenario: https://www.cirmall.com/circuit/14603
8. Based on FPGA, call, call, selection device design (source code + schematic + PCB)
The BASYS2 FPGA development board is built around an Xilinx Spartan-3e FPGA chip and an Atmel AT90USB USB controller, which provides a hardware platform that can be used at any time, and it is suitable for each of the basic logic devices to complex control devices. Host circuit. This project introduces the FPGA-based call name, the selection device design, a total of 10 buttons, one start, one reset, the remaining 8 selectable buttons, Digital Tube 9-0 countdown, buzzer sound prompt can call / Select.
Function: Press the start → Digital tube display 9-0 countdown (at this time, the selection is invalid) → After the countdown, the buzzer "droplet" → select the number → display the number of selected numbers. Take this cycle.
Scenario: https://www.cirmall.com/circuit/8909
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Source: Circuit City
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