Infrared timer remote control based on STC8H8K64U

Product Introduction:
This product integrates an infrared transmitter and an 1838 infrared receiver, allowing for customized transmit and receive functions. The default is to receive multiple sets of infrared commands and send them periodically. Multiple sets of data can also be entered, and sent after selecting a number (customization required). It features a USB-A interface for easy program programming; after development, simply plug in a 5V USB charger. Do not plug in a charger with a voltage higher than 5V, as this will directly damage the chip!
The two debugging switches on the back can be removed after development.
The product
has three operating modes:
1. Off Mode: All LEDs are off.
2. Learning Mode: Enter by long-pressing in off mode; the LEDs display a flowing pattern, alternating up and down. When transmitting an infrared signal towards the receiver, the indicator light flashes to indicate successful reception. Multiple commands can be entered continuously, with a default capacity of approximately 20. To exit, short-press to return to off mode.
3. Transmit Mode: Enter by short-pressing in off mode; only one LED illuminates, indicating the timing duration for the given number, with the default unit being hours. Upon entering transmission mode, all recorded infrared signals will be transmitted sequentially, and then transmitted again after the indicator light illuminates for the corresponding time. A short press of the button in transmission mode switches the timing duration. A long press enters the off mode.
The program starts in off mode by default. The first time the button is pressed, the indicator light flashes and then turns off, indicating that there are no infrared commands currently available and infrared signals need to be recorded in learning mode.
Rear debugging button instructions:
1. Open the ISP software, press and hold the rear button, and insert the device into the USB 2.0 interface to automatically enter HID programming mode. If it cannot be recognized, try several times (due to the simple design of the debugging circuit, recognition may fail; if concerned, you can complete the debugging circuit yourself by adding a few components).
2. The toggle switch needs to be slid to the side closest to the USB interface by default, at which point the serial cable is connected. When debugging is complete and it is in regular use, it can be slid to the other end to avoid data signal interference with the LED display (shared pins).
Product features:

Based on STC8H8K64U,
wide operating voltage: 1.9V~5.5V
; infrared wavelength: 940nm;
carrier frequency: 38kHz; transmit/
receive mode: self-receive/periodic transmit.