● Input voltage up to 4.75V-40V
● Built-in 20mΩ High-side NMOS
● Built-in 20mΩ Low-side NMOS
● Supports 4A continuous output current
● Supports 98% duty cycle
● Output voltage and current adjustable (2.5V-20V)
● Constant current accuracy ±6%
● Constant voltage accuracy ±2% (VFB=1.0V)
● No external compensation required
● 110kHz fixed switching frequency
● Cable voltage drop compensation
● Short circuit protection (SCP), overheat protection (OTP), overvoltage protection (OVP)
● Built-in SW cycle-by-cycle detection mode to avoid short circuit damage to the RSENT current-limiting resistor.
● SOP-8L package
, 24V input, 5V output, 2.4A test passed,
protocol chip recognition is normal.
PDF_CX8850 step-down module verification board.zip
Altium_CX8850 step-down module verification board.zip
PADS_CX8850 step-down module verification board.zip
BOM_CX8850 step-down module verification board.xlsx
96790
3D printing motor drive module interface to RJ45 interface to servo interface
The 3D printer replaces the stepper motor module, with an RJ45 interface, providing enable, direction, step, and other alarm signals. The Z zero-point signal is currently unused.
This is a custom-made adapter board for connecting servo motors via Ethernet cable. The standard Ethernet cable crimping sequence is T586B: white-orange-orange-white-green-blue-white-blue-green-white-brown-brown. The other end connects to the SCSI 50 servo connector. I'm using a Panasonic A5 servo motor.
The wiring is as follows: color, function, SCSI terminal number:
white-orange = pulse -, 4 orange = pulse +, 3
white-green = direction -, 6 green = direction +, 5
blue-white = Z phase, 19 blue = alarm, 37
white-brown = common negative, servo enable negative 29, the last two are optional (Z phase negative 25, alarm negative 36),
brown = 24V (servo enable), 7
PDF_3D Printing Motor Driver Module Interface to RJ45 Interface - Servo Interface Converter.zip
Altium 3D Printing Motor Driver Module Interface to RJ45 Interface - Servo Interface Converter (zip file)
PADS 3D Printing Motor Driver Module Interface to RJ45 Interface - Servo Interface Converter (zip file)
BOM_3D Printing Motor Driver Module Interface to RJ45 Interface - Servo Interface Converter.xlsx
96791
Deceptive Dice
The Baby-Cheating Dice (An electronic dice with hidden cheating features)
The "Trick Dice" (an electronic dice with a hidden cheat function)
is normally a regular electronic dice, but it has a hidden cheat function. If you roll a 1, 3, 1, 4 in sequence, and then land on the cheat number, the next roll will always be the cheat number. It can be used to fool children.
A demonstration video can be found on Bilibili.
[Trick Dice - Bilibili] https://b23.tv/gc1DQ0X
Second Generation: https://www.bilibili.com/video/BV1tt4y1f7kG/
Improved Charging Stand: https://www.bilibili.com/video/BV1ScydYdEgj/
Charging dock case.STL
PDF of the "Trick-or-Treat Dice" game, source code uploaded. zip
Altium_Trick Dice, source code uploaded. zip
PADS_Trick-or-Treat Dice, source code uploaded. zip
BOM_Liar's Dice, source code uploaded.xlsx
96792
21 Shenggong LHS-Multifunctional Power Module
A multi-functional 12V to multi-gradient adjustable amplitude power supply module built using voltage regulator chips such as LM7805, LM2596R, and AMS1117-3.3.
In this project, I redesigned a 12V to multi-gradient, adjustable voltage power supply module, referencing the design of @不想写代码的我的设计.
This module utilizes voltage regulator chips such as LM7805, LM2596R, and AMS1117-3.3 to convert the 12V signal into a multi-functional power supply module capable of outputting 5V, 3V3, and 1V~12V adjustable voltage signals. The module can be used with a battery to input a stable 12V voltage signal via a power connector. It then uses these voltage regulator chips to convert the 12V signal into an adjustable voltage signal with integrated outputs of 5V, 3V3, and 1V~12V.
This module can be used in various electronic design projects requiring multi-gradient voltage signal sources such as 3V3 and 5V.
PCB_Multifunctional Power Supply Module_2023-12-10.pdf
SCH_Multifunctional Power Module_2023-12-10.pdf
video_20231210_122618.mp4
PDF_21 Shenggong LHS-Multifunctional Power Module.zip
Altium_21 Biotech LHS-Multifunctional Power Module.zip
PADS_21 Shenggong LHS-Multifunctional Power Module.zip
BOM_21 Shenggong LHS-Multifunctional Power Module.xlsx
96793
electronic
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