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.
This reference design is a BeagleBone Black add-on board that allows users to explore TI's powerful Programmable Real-Time Unit (PRU) core and basic functionality. The PRU is a low-latency microcontroller subsystem integrated into Sitara's AM335x and AM437x family of devices. The PRU core is optimized for deterministic real-time processing, with direct access to I/O and ultra-low latency requirements. Featuring LEDs and buttons for GPIO, audio, temperature sensors, optional character display, and more, this add-on board provides schematics, bill of materials (BOM), design files, and design guides to allow designers to learn the basics of the PRU.
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.
TIDA-00891 is designed to evaluate the HD3SS3220 device for UFP implementation. This reference design also serves as a hardware reference design for any implementation using the HD3SS3220 with a USB-C™ connector. Reference design files are available upon request to assist in PCB design using the HD3SS3220. This design provides layout files to guide you through the routing/location rules schematic to implement the TUSB321A. This reference design provides an onboard USB Type-A plug to connect to legacy USB systems. Please note that this reference design may contain test components that are intended for evaluation and are not suitable for production.
This design is a sensored three-phase brushless DC motor controller that uses a single PWM input to control speed and three active-high Hall sensors to detect rotor position. The DRV8305's integrated communication table simplifies the microcontroller firmware required for correct commutation. The DRV8305 automatically handles dead time insertion and gate drive current control, both of which are adjustable through the driver SPI interface.
The MAXREFDES1180 is centered around the MAX17501 ultra small, high-efficiency, high-voltage, synchronous stepdown DC-DC converter with integrated MOSFETs. This design provides a -12V output and up to 150mA of load current with an input voltage range of 4.5V to 5.5V. Unlike a traditional design, this reference design is configured to work in an inverting buck-boost topology to produce negative output voltage from positive input voltage.
Li-Ion battery formation and electrical testing require accurate voltage and current control, usually to better than ±0.05% over the specified temperature range. This reference design proposes a solution for high-current (up to 50 A) battery tester applications supporting input (bus) voltages from 8 V–16 V and output load (battery) voltages from 0V–5V. The design utilizes an integrated multi-phase bidirectional controller, LM5170, combined with a high precisiondata converters and instrumentation amplifiers to achieve charge and discharge accuracies of 0.01% full scale. To maximize battery capacity and minimize battery formation time, the design uses highly-accurate constant current (CC) and constant voltage (CV) calibration loops with a simplified interface. All key design theories are described guiding users through the part selection process and optimization. Finally, schematic, board layout, hardware testing, and results are also presented.
Three techniques for charging lithium-ion (Li+) batteries are described. Linear, switch-mode, and constant-current pulse circuits are shown for each charging method.
The TIDA-01333 Isolated High Voltage Analog Input Module Reference Design has eight channels, each supporting voltage and current measurements. In addition, 4 of the channels support common-mode voltages up to ±160V. The device provides isolation of the +5V line and serial peripheral interface (SPI) communications within a single chip via the ISOW7841. The design uses the ADS8681, a 16-bit analog-to-digital converter (ADC) that can handle input voltages up to ±12.288V. This eliminates the need for any preprocessing of standard input voltages found in industry.
The ornamental fish tank controller is studied, developed and verified based on the Arm® Cortex®-M23 core GD32E231C-START evaluation board provided by GigaDevice for this competition. Finally, the GD32E231C8T6 microcontroller chip donated by GigaDevice was used to realize the status control of the fish tank circulating water pump, the three-stage brightness control of the LED lighting, and the granular bait feeding control using the 315MHz remote control receiving and transmitting device and other related peripheral equipment. As well as an ornamental fish tank controller with functions such as water temperature collection and digital tube display.
MAXREFDES89# is an mbed®-compatible shield for the rapid development of brushed DC motor applications. The shield contains four MAX14871 full-bridge DC motor drivers for driving up to 4 motors. A MAX17501 DC-DC converter allows the system to operate from a single 7 to 36VDC power supply. Four MAX4704 4:1 multiplexers permit setting the current regulation mode of the MAX14871, while two MAX5387 digital potentiometers provide the ability to set the motor current limit. A MAX7300 GPIO expander supports interfacing each motor driver circuit to the mbed enabled microcontroller platform.
This article develops and implements a WiFi module based on STM32 on an embedded development platform. Combined with the above new concepts of the Internet of Things, it enables users to monitor the environment in real time through the network. This system enables users to grasp and control the situation they want to know in real time. Home information (temperature and humidity information, light information, PM2.5) is obtained through various sensors, and users can control this information on the Android interface.
The NXP Gen 2 USB Type-C shield works with the MCUXpresso SDK and USB power delivery stack, giving you access to your choice of Kinetis®, LPC and i.MX RT development platforms via the USB Type-C connector. And it uses NXP’s easy-to-use hardware and MCUXpresso software and tools (the only similar solution on the market) to shorten the learning curve. It enables Type-C to seamlessly support Display Port alt mode and provides extensive overvoltage protection services for a simple and efficient design.
The MAXREFDES1043 is designed for SpO2 measurements based on Maxim’s new-generation biosensor—the MAX30102.
The QC4.0/4.0+ 18W Mobile Charger enables the design of power supplies featuring low standby power with the output voltage in full regulation, very high-efficiency and high-reliability. The NXP® chipset used is targeting mobile and notebook power supplies with power requirements up to 100W. Supplies can be designed easily and with a minimum number of external components.
This TI precision verification design circuit converts the differential current output of an audio DAC into a single-ended voltage that can drive low-impedance headphones. This design achieves the high-fidelity performance levels currently being promoted in cell phones and mobile audio players.
BabyCareAssistant is a children's toy "black box" based on SensorTile.box. It can be used to dynamically display motion data, real environment data, assist in monitoring children's activities, cries, etc.
Freedom Sensor Shield expansion board for MMA8491. Compatible with FRDM development boards, sensor toolbox and ISF
The single cell Lithium-ion (Li-ion) battery charger that does not dissipate power (no heat) can also use a low cost linear AC adapter. This application note discusses how to design a simple and low-cost Li-ion charger.
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