FRDM-FXS-MULT2-B: Freedom development platform for NXP sensors with Bluetooth®

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CN0290

Extending the low-frequency range of high-performance phase-locked loops

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12V and 24V brushless DC external rotary motor reference design

This 6cm motor is packaged and ready; connect to power and run! The simple and reliable design is easily modified to support speed and current system needs. The DRV5013 Hall-effect sensor senses the magnetic rotor position, and the DRV8307 controller determines when to drive the CSD88537ND FET that energizes the coil .

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PocketSprite: a handheld game console based on ESP32

PocketSprite is more than just a small gaming device that clips to your keychain, it's an open source, powerful and mature hardware development platform.

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CN0240

Bidirectional Isolated High-End Current Sense Module with 270 V Common-Mode Rejection

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Designing a buck-boost LED driver using the MAX16834

This reference design is for a buck-boost LED driver. The MAX16834 current-mode high-brightness LED driver is featured, and the MAX16834 EV (evaluation) kit is used to implement the design. The application note shows the design specifications, schematic, bill of materials (BOM), and performance data.

Design of automatic goldfish feeding robot based on GD32E231

If you are away from home for a long time on a business trip, the goldfish at home will starve. Therefore, in order to prevent goldfish from starving when the owner is not at home, an automatic feeding robot was designed based on a 4-degree-of-freedom robotic arm and GD32E231. GD32E231 controls the robotic arm by generating PWM. At the same time, it picks up fish food from a fixed place and puts it into the fish tank according to the preset time. Through multiple manual trainings, the robotic arm automatically calculates the feeding based on the manual training data. eating position. At the same time, you can also add some auxiliary functions. You can roughly obtain the internal temperature of GD32E231 and the lighting conditions around the fish tank through the serial port or onboard ADC and photoresistor. You can turn on lighting equipment such as desk lamps when it is dark.

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15-Cell Li-Ion Battery Controller Analog Front-End Reference Design

The TIDA00255 reference design utilizes the bq76940 analog front end (AFE) IC. It can measure battery voltage, mold temperature or external thermistor voltage using a 14-bit ADC. Current is measured individually by a separate 16-bit coulomb counter. The design turns off the low-side power FET to stop discharging or charging based on selected hardware limits. A microcontroller not included in this design will be part of the battery controller to communicate with the AFE to set protection thresholds, enable the power FETs, provide fault recovery, and shut down the FETs during over/under temperature conditions. Battery controller designs may include additional features that are not part of this reference design, such as secondary overvoltage protection, measurement, and isolated communications to inform the system of battery status.

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Sub-1GHz and 2.4GHz Antenna Reference Designs

This antenna board reference design contains multiple low-cost antenna solutions for sub-1 GHz and 2.4 GHz short-range wireless systems.

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FRDM33771BTPLEVB: MC33771 evaluation board with isolated daisy chain communication

MAXREFDES27#: IO-LINK proximity detection light sensor

Maxim's MAXREFDES27# reference design is a tiny, low-power IO-Link ^® optical proximity sensor compliant with IEC 61131-9. It contains an infrared (IR) receiver, matching IR LED driver, IO-Link transceiver, and efficient step-down converter. The entire design fits on an 8.2mm x 31.5mm printed circuit (PC) board.

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Color card password lock

Password locks are relatively common in life. There are various types of locks. The most common ones are in the form of numbers. Generally, you need to enter a few numbers to complete the password. This project uses color to complete the password lock. There are many types of colors, which are more complicated than numbers. Using color cards to set the password and unlock the lock is more difficult to crack, and it is relatively safer.

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Acontis EtherCAT Master Protocol Stack Reference Design

The Acontis EC-Master EtherCAT Master stack is a highly portable software stack that can be used on a variety of embedded platforms. EC-Master supports high-performance TI Sitara MPUs and provides an advanced EtherCAT Master solution that customers can use to implement EtherCAT communication interface boards, EtherCAT-based PLCs or motion control applications. The EC-Master architecture is designed so that users do not need to plan additional tasks, so the full stack functionality is available even on platforms without an operating system (such as TI Starterware supported on AM335x). This architecture combined with high-speed Ethernet drivers allows users to implement EtherCAT master on the Sitara platform with very short cycle times of 100 microseconds or less.

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pet monitor

The Renesas Pet Activity Monitor is a practical reference design created in celebration of the Year of the Dog. This device can track your dog’s barking and activity, and data can be viewed and downloaded from your PC.

DER-717 - InnoSwitch3-CE based 15 W adapter with ±30 kV ESD capability

15 W isolated flyback power supply using InnoSwitch3-CE (INN3164C-H101) with ±30 kV ESD Capability

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A PCB violin made by ATtiny microcontroller

mini-violin is an open source project for violin design, and the circuit schematic is quite simple. The ATtiny85 controls two LEDs and a piezo buzzer, in addition to a button to switch songs. What's particularly interesting is that the violin strings are connected to the analog inputs of the microcontroller so that they can be controlled by contacting conductive materials. Come play the violin.

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1/8 brick power module based on ADP1051

The 1/8 brick power module in this reference design is designed based on the 1/8 brick power supply standard defined by the Distributed Power Open Standards Alliance (DOSA). This power module uses an Analog Devices ADP1051 to control the energy conversion from input to output.

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JN5169XK010: ZigBee Universal Node Extension Kit

"Piranha" based on ESP32

Just like piranha and mimosa, when your hand comes close to the petals, you can quickly close the 6 petals. It can be opened automatically after leaving~

Schematic PCB

24V dual-channel brushless DC motor driver reference design for dishwasher water pumps

TIDA-00447 is a 24V, dual brushless DC (BLDC) motor drive reference design that can be used to drive circulating water pumps and drain pumps in dishwashers. The circulating water pump and drainage pump drive stages are designed for continuous operation of 100W and 30W respectively. The drain pump driver is based on a single-chip, low external component count three-phase motor driver with integrated power MOSFETs and provides a proprietary sensorless control scheme enabling continuous sine wave drive. In addition, it features an integrated buck/linear regulator that efficiently reduces the supply voltage to 5V or 3.3V to power internal and external circuitry. The circulating water pump is implemented using a discrete solution with MCU, external MOSFET driver with protection mechanism and current sensing function, and external power MOSFET. This architecture allows the flexibility to adjust drive power levels as needed. The MCU is programmed through the InstaSPIN-BLDC software, which enables sensorless trapezoidal control of the BLDC motor using an anti-EMF integration approach, and can also be used to configure and control the speed of the drainage pump stage. A separate UART interface allows the drive unit to communicate with the main user interface controller. This reference design has been fully tested with current and motor stop protection mechanisms operating at full load.

Schematic PCB