Newt: a low-power, open-source, 2.7-inch IoT display powered by the ESP32-S2 module and powered by Sharp’s Memory in Pixel (MiP) screen technology

Newt is a battery-operated, always-on, wall-mounted display that can retrieve weather, calendars, sports scores, to-do lists, quotes...anything on the internet! It is powered by the ESP32-S2 microcontroller and you can program it using Arduino, CircuitPython, MicroPython or ESP-IDF. We think Newt is the next step in the evolution of low-power display panels. Sharp's Memory in Pixel (MiP) technology is ideal for manufacturers, avoiding the slow refresh times associated with E-Ink displays. To support timers and alarms, we also added a real-time clock (RTC). Finally, we designed the Newt with battery operation in mind—every component on the board was chosen for its ability to run with low power consumption.

Schematic PCB

Smarthome-dashbutton: smart home control button

This is what smart home enthusiasts want to control their entire lights, thermostat, or any other smart device from their couch without having to activate a wall switch.

Schematic PCB

Picoclick: Small and simple IoT button

Picoclick is a simple IoT button in a very small package. The size of the PCB is only 18x20mm, and the height with the 300909 battery is only about 10mm. It's able to connect to your local WiFi at an impressive speed of about 1.5 seconds on average. Yes, since it calls IOT-Button, it uses WiFi of course! This opens up countless possibilities for that little device.

Schematic PCB

Sony's super powerful IoT kit based on its own CXD5602 (open source information)

The biggest highlight of this kit is Sony's own 6-core microcontroller CXD5602, which comes with 1.5MB of general-purpose SRAM, 64KB of backup SRAM, and a main frequency of 156MHz. There is also an M0+ core assist processor for IO control management, which comes with 256KB of general-purpose SRAM. The built-in GNSS receiver supports GPS and GLONASS. Others include 2D graphics acceleration (supporting rotation, scaling, mixing, etc.); dedicated sensor acquisition peripherals (with its own 40KB FIFO and supporting preprocessing) supporting SPI, I2C and other interface methods; DCMI camera interface and I2S audio peripherals All pretty good too.

Schematic PCB

MAXREFDES9001: Securing IoT LoRa sensor nodes using DS28S60 and Google Cloud

The MAXREFDES9001 is a complete Internet-of-Things (IoT) security reference design featuring a LoRa radio based

Schematic PCB

DER-874 - 0.48W non-isolated power supply, using LinkSwitch-TNZ to generate AC zero-crossing signals losslessly

0.48 W non-isolated power supply with lossless generation of AC zero-crossing signal using LinkSwitch-TNZ (LNK3302D)

Schematic PCB

DER-879 - 10W isolated flyback power supply, using LinkSwitch-TNZ to generate AC zero-crossing signal and X capacitor discharge losslessly

10 W isolated flyback power supply with lossless generation of AC zero-crossing signal and X capacitor discharge using LinkSwitch-TNZ (LNK3317D)

Schematic PCB

RDR-877 - 6W isolated flyback power supply, using LinkSwitch-TNZ to generate AC zero-crossing signals losslessly

6 W isolated flyback power supply with lossless generation of AC zero-crossing signal using LinkSwitch-TNZ (LNK3306D)

Schematic PCB

RDR-866 - 2.5W non-isolated power supply using LinkSwitch-TNZ to generate AC zero-crossing signals losslessly

2.5 W Non-Isolated Power Supply with Lossless Generation of AC Zero-Crossing Signal using LinkSwitch-TNZ

Schematic PCB

DER-865 - 2-wire normal/inverting BLE smart dimmer using LinkSwitch-TNZ and lossless AC zero-crossing detection

Two-wire forward/reverse phase Bluetooth low-energy (BLE) smart dimmer switch using LinkSwitch-TNZ (LNK3302D) with lossless AC zero-crossing detection

Schematic PCB

RDR-623 - Low standby current, non-isolated flyback power supply using LinkSwitch-TN2

Low Standby Current, Non-Isolated Flyback Power Supply Using LinkSwitch-TN2 (LNK3202D)

Schematic PCB

RDR-721 - 2.75W non-isolated buck converter for home automation using LinkSwitch-TN2

2.75 W non-isolated buck converter for home and building automation using LinkSwitch-TN2 (LNK3207D)

Schematic PCB

SC18IM704-EVB: UART to I2C ^bridge evaluation board ^new

PCF2131-ARD: PCF2131/PCA2131 Arduino ^® Shield expansion board

SC18IS604-EVB: SPI to I2C ^Bridge Evaluation Board ^new

SC18IS606-EVB: I ² C to SPI Bridge Evaluation Board ^new

small home weather station

It consists of two parts: the outdoor end (Outdoor) and the indoor end (Indoor). The Outdoor end can be placed outside the window to monitor real-time outdoor temperature, humidity, air pressure, illumination and other information. The Indoor is placed indoors to receive weather data and display it.

Schematic PCB

Smart IoT student dormitory based on RSL10

In view of the characteristics of students' dormitory life, an IoT smart dormitory system is built using ON Semiconductor's RSL10 low-power Bluetooth chip to implement several functional nodes, and a very convenient WeChat applet is used on the control end to monitor data. Through the functional units composed of RSL10 boards for data collection or action control, and realizing the monitoring function of WeChat applet, this project is a simple intelligent control solution for student dormitories, which can be used as courses/graduation projects for students in related majors. Or a case study of ON Semiconductor University planned courseware.

Schematic PCB

Filter circuit (various design solutions + schematic diagram).rar

Filter circuit (various design solutions + schematic diagram)

Schematic PCB

Design of dual-tone doorbell circuit based on 555 timer

Design of dual-tone doorbell circuit based on 555 timer

Schematic PCB