Armor plate drive plate

The task requires
designing a light strip to drive the armor plate of the old RoboMaster referee system. The light strip should be nearly identical in brightness to the official new armor plate. It should be handheld, rechargeable, and simple to use.
The problem analysis
addresses this requirement for the vision team. It necessitates measuring the wiring sequence of the LED strip on the old official referee system. A lithium battery is needed to store power, allowing for handheld use without requiring an external power source.

The overall design scheme includes a block diagram,
schematic diagram, and design description .

The lithium battery charging circuit uses a TP4056 lithium battery charging chip, with green and red LEDs to indicate whether it is fully charged.
The design concept is based on the fact that only red and blue are used in the game, and these colors are mutually exclusive. Therefore, only two identical voltage regulator circuits are needed, with a switch selecting which regulator circuit to power to achieve color switching.
The circuit design controlling the armor plate brightness uses a PW5100 chip, a 5V boost voltage regulator chip for lithium batteries, capable of outputting a maximum current of 1.5A. In the diagram, SW1 is a 4-pin switch with three positions. Position 1 is used in the off state, where neither of the two voltage regulator circuits receives power and neither operates. Position 2 provides regulated output power to the red LED, and position 3 provides regulated output power to the blue LED. The two rectifier diodes U6 and U7 are to prevent 5V voltage from entering the lithium battery during charging or USB power supply, which could damage the battery.
PCB Design Notes:

For PCB design, traces requiring current flow are recommended to have a width of 20mil or more. Special attention should be paid to R11 and R12, which are current-limiting resistors for the red and blue LEDs respectively. These need to carry current, so the packages should be changed to 1206. Most resistors will have sufficient power rating. LED brightness can be adjusted by resoldering resistors of different resistance values. In actual testing, using a 20R resistor for current limiting resulted in the LED strip's color difference closest to the official brightness.
Physical Demonstration: The

PCB
is relatively easy to solder. The smallest resistor and capacitor is only a 0603 package; simply solder them according to the schematic.
The PCB installation diagram
shows the same hole positions as the official original circuit board. In practice, installation simply involves removing the official PCB and replacing it with our custom-made one. Regarding wiring, just connect the two wires of the LED strip to the two GH1.25-4P connectors. Both connectors are identical, and all materials are sourced from the original mounting plate (except for the circuit board).
Important notes
:
After installation, pay attention to protecting the lithium battery and the circuit board.
A demonstration video

is attached.