The most commonly used lithium battery protection circuit drawing, 4 strings
MiniQ is a mini quadcopter that is open source from hardware design to control algorithm. The algorithm used for the Altitude Heading Reference System (AHRS) is the DCM complementary filter. The system calculates the height and controls the output PWM of the four motors 1600 times per second. It can be controlled remotely via Bluetooth (Bluetooth Serial Port Profile).
3W 5V Flyback 180 to 265VAC Reference Design An offline isolated 3W 5V power supply based on the CoolSET™ ICE3RBR4765JG current mode controller.
The overall idea of the project is to use the GD32E231 development board as the main control unit, use the LCD5110 display screen and two user buttons as the human-computer interaction module, use the infrared probe for monitoring, and use the AT24C02flash chip to save and record the triggering time of the monitoring alarm, so that Initial implementation of basic intelligent functions.
The i.MX RT1060 EVK is an evaluation kit for the i.MX RT1060 crossover processor, which uses NXP's advanced Arm Cortex-M7 core implementation.
PN7150 development kit for RaspberryPi, BeagleBone Black and boards with Arduino interface, including: LPCXpresso, Kinetis Freedom and i.MX boards.
LED brightness dimming changes the brightness by changing the LED's on-time. The longer the LED's on-time per unit time, the higher the brightness. In practical applications, it is controlled by changing the duty cycle. It can be seen from the light efficiency conversion characteristics of LED that when the same duty cycle is increased, the brightness increases more at low gray values than at high gray values. At the same time, at low gray values, every time the gray value changes by one In small units, the value of the light intensity increase rate D is relatively large. As the brightness increases, the light intensity increase rate D decreases, and the human eye's sensitivity to light changes also decreases. That is to say, the level jump is very obvious at low brightness. The brightness jump is particularly sensitive to human vision and cannot achieve a flexible effect of gradually brightening or dimming. The principle of smooth dimming is to improve the dimming effect of LED by changing the linearity of LED dimming curve.
Analog audio input, Class D output via ADAU1701 SigmaDSP codec, low-power SSM2306 Class D amplifier and ADP3336 LDO regulator
The MAXREFDES1263 is a reference design for the TWS (True Wireless Stereo) application base.
This reference design provides a banknote counting machine solution based on CIS sensors, which can implement identification technologies such as white light image analysis, infrared light image analysis, edge image processing (with related algorithms, serial number recognition can be achieved).
The composition and working principle of the micro thermal printer based on NUC501MCU are analyzed in detail, and the design and implementation of thermal head overheat protection and stepper motor drive module are given.
TTWR-K65F180M is a development board for Kinetis K26, K65 and K66 180 MHz 32-bit Arm ® Cortex ® -M4 MCUs. It uses Kinetis MK65FN2M0VMI18 low-power MCU with 2MB flash memory, 256 KB SRAM, HS USB connectivity and Ethernet MAC.
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