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.
Small Engine EFI (Electronic Fuel Injection) Reference Design for SPC572L MCU and L9177A Driver
Connect to a 5" LCD paired with a Sipeed Tang Nano. This is an 800x480 LCD with RGB888 connections. All 8 bits of each channel are connected via SYZYGY connectors.
STM32 Nucleo-64 development board using STM32F334R8 MCU, supporting Arduino and ST morpho connections
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.
The 56F8013 Demonstration Board is an evaluation module board that includes a NXP 56F8013 digital signal controller (DSC).
The new T1023 WLAN access point system is based on the QorIQ T1023 and is a semi-turnkey platform primarily designed for fast shipping to 802.11ac customers. This WLAN reference design board, jointly developed by NXP and Alpha Networks, can be quickly put into production with the latest 802.11ac capabilities, thus accelerating time to market. Not only does the board feature 2.4GHz and 5Ghz radios, it also comes with a PCIe slot for a potential 60GHz radio.
STM32 Nucleo-144 development board using STM32F446ZE MCU, supports Arduino, ST Zio and morpho connections
The TWR-K21D50M module is a development board for Kinetis K11, K12, K21 and K22 50 MHz 32-bit ARM Cortex-M4 MCUs.
16-bit, 300 kSPS low-power data acquisition system optimized for sub-Nyquist frequency input signals up to 4 kHz
This design is a breakout board for SGMII Gigabit Ethernet PHY DP83867C. It connects to SERDES via a SYZYGY-TXR connector to test and evaluate Ethernet over 1.25Gbps serial channels. 2 channels are used and CDR is required on the RX path. Compared to RGMII, SGMII significantly reduces the number of signals required for routing.
The QorIQ ® T1024 Reference Design Board (T1023RDB) is a high-performance evaluation and development and test platform supporting the QorIQ T1023 communications processor.
Digital MEMS microphone expansion board based on MP34DT06J for STM32 Nucleo
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