User Guide

The FB2-LED clock can be controlled via a mini-program or an Android app. It can also control multiple clocks within range simultaneously through the data link connected via the Android app.

I. Mini-Program

1. Login with a password to prevent unauthorized operations by others. The password can be obtained from the Run8 Cloud timing backend. The password changes every 24 hours, but it can also be manually modified for timely updates.
2. Turn on the clock, then click to connect to the clock via Bluetooth. You can connect to multiple nearby clocks that need to be controlled one by one.
3. After successfully connecting the Bluetooth of the clock, the red area in the top left corner will display that the Bluetooth is connected to the "xxx" clock. You can control the clock's display and show the required time information using the software feature buttons.
Notes:
  1. Click the "Start" button, and the clock will start counting forward.
  2. Click the "Stop" button, and the clock will stop at its current state.
  3. Click the "Zero" button, and the clock will reset to zero, displaying 0:00:00.
  4. Click the "Plus" button, and the clock will add one second to its current time.
  5. Click the "More" button, and the clock will add or subtract time in its current state.
  6. Click the "Minus" button, and the clock will subtract one second from its current time.
  7. Click to enter the count-up operation.
  8. Click to enter the appearance operation.
  9. Click to enter the countdown operation.
  10. Display internal time.
  11. Display Beijing time.
  12. Enter a valid time in the time logic within the dial frame and click the set dial button to displ-ay the time information you set.

II. APP

1. Enter the clock (Event Timing) APP and go to the main interface.
2. Click the "Cloud Manage" button in the bottom-right corner to proceed to the next step.
3. Click "Login" in the top-left corner and enter the account username and password, e.g., username: 2020shmls, password: 123456.
4. After entering the account username and password, you can see all the clocks under this account.
5. Click the "Bluetooth" option in the bottom-left corner, then click the button to connect to the clock via Bluetooth to proceed to the next step.
6. Once the clock you need to control is connected and the connection is successful, you can use the feature buttons in the APP to control the clock.
Notes:
  1. Click the "Start" button, and the clock's display starts counting upwards.
  2. Click the "Pause" button, and the clock's display stops at the current time.
  3. Click the "Back to zero" button, and the clock's display will reset immediately, showing 0:00:00.
  4. Click the "Add 1 second" button, and the clock's display will add 1 second to the current time.
  5. Click the "Minus 1 second" button, and the clock's display will subtract 1 second from the current time.
  6. Click the "equivalent start time" button, set the time for the event start signal, and the clock will start counting from the set time.
  7. Enter a valid time value inside the clock display frame, click the set display button, and the time information you set will be displayed. Enter one of the following commands: "92221," "92222," or "92223," then click the set display button. After clicking the start gun signal button, it can be used to synchronize with the start gun and the clock. After synchronization, the start gun will control the corresponding timer. A single clock can be synchronized with up to three starting guns, and all three synchronized starting guns can control the clock.
  8. When the clock is counting or paused, click the countdown button, and the clock will start counting down. The clock will stop when it reaches 0:00:00.
  9. Timer result display feature: The clock connects to a UHF chip reader, reads the UHF electronic tag EPC code information, and accesses the Run8 Cloud timing backend via the Bluetooth-connected mobile APP. The clock will display the finish results corresponding to the UHF tag. You can also manually input the runner's number to display the corresponding results.
  10. Equivalent start time: Input the start time in Beijing Time and click to start the clock from that time. The clock will display the elapsed time since the start time.
  11. Sleep the clock: Put the clock into low-power mode, and it can only be operated after being woken up.
  12. Deep sleep: Put the clock into low-power mode and turn off the clock's network. It can only  be operated after being woken up.
  13. Wake up the clock: Wake up the clock from its sleep state.
  14. Scheduled wake-up: After the clcok is in sleep mode, you can schedule it to automatically wake up after a certain period. This can be used for deep sleep or normal sleep mode to wake up the clock.
  15. Soft reboot of the clock: Reboot the main program of the clock.
  16. Refresh display: Push all digital segments of the clock to refresh them.
  17. Test display: Test all digital displays (0-9) to check if the digital segments are working properly.
  18. Countdown to the target time: Select a time after the current time, and the clock will count down to that time and reset to zero or start counting upwards.
  19. Display 12/24 hour format: Switch between 12-hour and 24-hour time display modes for the clock.
  20. Sync the phone time with the clock: Use the current Beijing Time of the phone to synchronize with the clock. This is commonly used to synchronize the reference time across multiple clocks.
  21. Data chain: After connecting the data chain and the mobile APP, you can synchronize or unsynchronize the data chain with the clock via Bluetooth. The data chain can control the clocks it is synchronized with, and unsynchronized data chains cannot control the clock. The synchronized data chain can control multiple clocks within its range. The range is wide, and the connection is stable, commonly used for timing the start and finish points of large-scale events.
  22. Map: In the map interface, click "Global Settings" in the top-left corner to set the 5/6-digit display and 12/24-hour time format.

III. Clock Panel Introduction

1. Side Panel

Note
The switches on the side control panel are all toggle switches. Except for the synchronization toggle switch, which is a three-position switch, all other toggle switches are two-position switches. The two-position toggle switches are turned on when the rocker is facing up and turned off when the rocker is facing down. The three-position toggle switch is turned on when the rocker is facing up, turned off when the rocker is in the middle position, and turned on again when the rocker is facing down. The specific features of each toggle switch are as follows:
1. Top three toggle switches (R, G, B) on the side control panel: These switches control the color of the clock, with 6 adjustable colors: red, green, blue, yellow, purple, and cyan.
Toggle switch RToggle switch G Toggle switch BColor
red
green
blue
yellow
yellow
yellow
purple
cyan
2. This knob adjusts the brightness of the clock. The brightness has 11 levels: 0%, 10%, 20%...100%. The 0 position is the minimum brightness, and the other positions increase the brightness as the value increases. 
Note
It is recommended to rotate the brightness knob to align with the percentage markings to avoid sudden changes in brightness.
3. The score display is connected to the score sensing board to show the score.
4. Front zero display toggle switch controls whether the front zero display is shown. When the toggle is facing up, the front zero is displayed. When the toggle is facing down, the front zero is not displayed. In this state, only the second digits and a small dot are lit on the display. As the timer progresses, the minute and hour digits light up sequentially. The purpose of this design is to save power.
5. Battery display toggle switch controls whether the battery display module is active. When the toggle is facing up, the battery level is displayed. When the toggle is facing down, the battery display is turned off.
6. Synchronization toggle switch controls whether the clock synchronizes with other clocks. It requires synchronization lines to be connected to another clock. The synchronization toggle switch has three positions: when the toggle is facing up, the synchronization feature is enabled, and an external driving signal is required to work; when the toggle is in the middle position, the clock is off; when the toggle is facing down, the clock uses its own driving signal to operate.
Note
The concept of synchronization here refers to making the time displayed on two clocks completely synchronized, with no deviation. The application scenario is when both clocks need to display the time simultaneously. The original intention of designing the synchronization feature is to ensure that the time on both clocks is fully synchronized. When the synchronization feature is activated, the signal from one clock directly feeds into the other clock, ensuring that there will be no time deviation as the time increases. Therefore, when synchronization is not needed, make sure the synchronization toggle switch is in the down position to keep the clock in normal working mode.
7. There are three states for key lock switch: on, off, and charging. When the key is turned to the charging position, a Type C charger can be used to charge the clock.
Note
When the clock is in normal operation, do not use a Type C charger to charge it. Ensure the key is turned to the switch lock charging position before using the Type C charger. The clock only supports Type C chargers with PD fast charging. It is recommended to use a charger with a power rating greater than 60W for optimal charging performance. It is recommended to use a Type C charger and data cable with PD fast charging support, with a power rating above 60W, preferably based on gallium nitride (GaN) technology. This charging feature is a backup in case the main charger fails or is lost, for emergency use.

2. Top Port Introduction

The top port of the clock from left to right: wireless serial port (data link), main charging port, and synchronous cable port.
1. The wireless serial port needs to connect to 170M rubber rod antenna for using. It can receive signals from starting pistol and data link to achieve wireless control functions such as starting or stopping the clock.
2. The main charging port is used with the charger provided by our company.
Note
The main charging port can charge the clock regardless of whether the clock working or not, which is different from Type-C charging. Be careful not to charge the clock with main charger and Type-C charger at the same time, or will damage the battery. If clock needs high brightness or long time working, you can connect the main charger to an external power supply to use.
3. Synchronous cable port: When the synchronization function of clock 1 is turned on, the driving signal is obtained from clock 2 by using a synchronous cable connection.
Note
The synchronization function requires two clocks be used in conjunction with a synchronous cable. If clock 1 uses the synchronization function, the toggle should be turned up, for clock 2, the toggle should be turned down. After connecting two clocks with synchronous cable, clock 1 will use the drive signal from clock 2 to work, thereby ensuring that the timing of two clocks is completely synchronized.
2025-09-19