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The ESP8266 is an impressive, low cost WiFi module suitable for adding WiFi functionality to an existing microcontroller project via a UART serial connection. The module can even be reprogrammed to act as a standalone WiFi connected device – just add power! 802.11 b/g/n protocol Wi-Fi Direct (P2P), soft-AP Integrated TCP/IP protocol stack This module is a self-contained SOC (System On a Chip) that doesn’t necessarily need a microcontroller to manipulate inputs and outputs as you would normally do with an Arduino, for example, because the ESP-01 acts as a small computer. Thus, you can give a microcontroller internet access like the Wi-Fi shield does to the Arduino, or you can simply program the ESP8266 to not only have access to a Wi-Fi network, but to act as a microcontroller as well, which makes the ESP8266 very versatile.

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Functionality, structure and handling of a power module For readers with first steps in power management the “Abc of Power Modules” contains the basic principles necessary for the selection and use of a power module. The book describes the technical relationships and parameters related to power modules and the basis for calculation and measurement techniques. Contents Basics This chapter describes the need of a DC/DC voltage converter and its basic functionality. Furthermore, various possibilities for realizing a voltage regulator are presented and the essential advantages of a power module are mentioned. Circuit topologies Circuit concepts, buck and boost topologies very frequently used with power modules are explained in detail and further circuit topologies are introduced. Technology, construction and regulation technology The mechanical construction of a power module is presented, which has a significant influence on EMC and thermal performance. Furthermore, control methods are explained and circuit design tips are provided in this chapter. Measuring methods Meaningful measurement results are absolutely necessary to assess a power module. The relevant measurement points and measurement methods are described in this chapter. Handling The aspects of storage and handling of power modules are explained, as well as their manufacturing and soldering processes. Selection of a power modules Important parameters and criteria for the optimal selection of a power module are presented in this section.

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The SparkFun GPS-RTK2 raises the bar for high-precision GPS and is the latest in a line of powerful RTK boards featuring the ZED-F9P module from u-blox. The ZED-F9P is a top-of-the-line module for high accuracy GNSS and GPS location solutions, including RTK capable of 10 mm, three-dimensional accuracy. With this board, you will be able to know where your (or any object's) X, Y, and Z location is within roughly the width of your fingernail! The ZED-F9P is unique in that it is capable of both rover and base station operations. Utilizing our handy Qwiic system, no soldering is required to connect it to the rest of your system. However, we still have broken out 0.1"-spaced pins if you prefer to use a breadboard. We've even included a rechargeable backup battery to keep the latest module configuration and satellite data available for up to two weeks. This battery helps 'warm-start' the module decreasing the time-to-first-fix dramatically. This module features a survey-in mode allowing the module to become a base station and produce RTCM 3.x correction data. The number of configuration options of the ZED-F9P is incredible! Geofencing, variable I²C address, variable update rates, even the high precision RTK solution can be increased to 20 Hz. The GPS-RTK2 even has five communications ports which are all active simultaneously: USB-C (which enumerates as a COM port), UART1 (with 3.3 V TTL), UART2 for RTCM reception (with 3.3V TTL), I²C (via the two Qwiic connectors or broken out pins), and SPI. Sparkfun has also written an extensive Arduino library for u-blox modules to easily read and control the GPS-RTK2 over the Qwiic Connect System. Leave NMEA behind! Start using a much lighter weight binary interface and give your microcontroller (and its one serial port) a break. The SparkFun Arduino library shows how to read latitude, longitude, even heading and speed over I²C without the need for constant serial polling. Features Concurrent reception of GPS, GLONASS, Galileo and BeiDou Receives both L1C/A and L2C bands Voltage: 5 V or 3.3 V, but all logic is 3.3 V Current: 68 mA - 130 mA (varies with constellations and tracking state) Time to First Fix: 25 s (cold), 2 s (hot) Max Navigation Rate: PVT (basic location over UBX binary protocol) - 25 Hz RTK - 20 Hz Raw - 25 Hz Horizontal Position Accuracy: 2.5 m without RTK 0.010 m with RTK Max Altitude: 50k m Max Velocity: 500 m/s 2x Qwiic Connectors Dimensions: 43.5 x 43.2 mm Weight: 6.8 g

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Scrolling text display with eight 8 x 8 LED dot matrix displays (512 LEDs in total). Built around an ESP-12F Wi-Fi module (ESP8266-based) programmed in the Arduino IDE. ESP8266 web server allows control of displayed text, scroll delay and brightness with a mobile phone or other Wi-Fi-connected (portable) device. Features 10 MHz Serial Interface Individual LED Segment Control Decode/No-Decode Digit Selection 150 µA Low-Power Shutdown (Data Retained) Digital and Analog Brightness Control Display Blanked on Power-Up Drive Common-Cathode LED Display Slew-Rate Limited Segment Drivers for Lower EMI (MAX7221) SPI, QSPI, MICROWIRE Serial Interface (MAX7221) 24-Pin DIP and SO Packages

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NRF24L01 is a universal ISM band monolithic transceiver chip works in the 2.4-2.5 GHz. Features Wireless transceiver including: Frequency generator, enhanced type, SchockBurstTM, mode controller, power amplifier, crystal amplifier, modulator, demodulator The output power channel selection and protocol settings can be set extremely low current consumption, through the SPI interface As the transmit mode, the transmit power is 6 dBm, the current is 9.0 mA, the accepted mode current is 12.3 mA, the current consumption of the power-down mode and standby mode are lower Built-in 2.4 GHz antenna, supports up to six channels of data reception Size: 15 x 29 mm (including antenna)

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This camera module adopts a SmartSens SC3336 sensor chip with 3 MP resolution. It features high sensitivity, high SNR, and low light performance and it is capable of a more delicate and vivid night vision imaging effect, and can better adapt to ambient light changes. Also, it is compatible with Luckfox Pico series boards. Specifications Sensor Sensor: SC3336 CMOS size: 1/2.8" Pixels: 3 MP Static resolution: 2304x1296 Maximum video frame rate: 30fps Shutter: Rolling shutter Lens Focal length: 3.95 mm Aperture: F2.0 FOV: 98.3° (diagonal) Distortion: <33% Focusing: Manual focus Downloads Wiki

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The flexibility of the Artemis module starts with SparkFun's Arduino core. You can program and use the Artemis module just like you would an Uno or any other Arduino. The time to first blink is just 5 minutes away! We built the core from the ground up, making it fast and as lightweight as possible. Next is the module itself. Measuring 10 x 15 mm, the Artemis module has all the support circuitry you need to use the fantastic Ambiq Apollo3 processor in your next project. We're proud to say the SparkFun Artemis module is the first open-source hardware module with the design files freely and easily available. We've carefully designed the module so that implementing Artemis into your design can be done with low-cost 2-layer PCBs and 8mil trace/space. Made in the USA at SparkFun's Boulder production line, the Artemis module is designed for consumer-grade products. This truly differentiates the Artemis from its Arduino brethren. Ready to scale your product? The Artemis will grow with you beyond the Uno footprint and Arduino IDE. Additionally, the Artemis has an advanced HAL (hardware abstraction layer), allowing users to push the modern Cortex-M4F architecture to its limit. The SparkFun Artemis Module is fully FCC/IC/CE certified and is available in full tape and reel quantities. With 1M flash and 384k RAM, you'll have plenty of room for your code. The Artemis module runs at 48MHz with a 96MHz turbo mode available and with Bluetooth to boot!

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This Wi-Fi module is based on the popular ESP8266 chip. The module is FCC and CE certified and RoHS compliant. Fully compatible with ESP-12E. 13 GPIO pins, 1 analog input, 4 MB flash memory.

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This mini WiFi board has 16 MB flash, external antenna connector and built-in ceramic antenna based on ESP8266EX. Features 11 digital input/output pins Interrupt/pwm/I²C/one-wire 1 analog input (3.2 V max input) 16 MB Flash External antenna connector Built-in ceramic antenna CP2104 USB-TO-UART IC Specifications Operating Voltage 3.3 V Digital I/O Pins 11 Analog Input Pins 1 (3.2 V max) Clock Speed 80/160 MHz Flash 16 MB Size 34.2 x 25.6 mm Weight 3 g Pin Configuration Pin Function ESP8266 Pin RX RXD RXD A0 Analog input, max 3.2 V A0 D0 IO GPIO16 D1 IO, SCL GPIO5 D2 IO, SDA GPIO4 D3 IO, 10k Pull-up GPIO0 D4 IO, 10k Pull-up, BUILTIN_LED GPIO2 D5 IO, SCK GPIO14 D6 IO, MISO GPIO12 D7 IO, MOSI GPIO13 D8 IO, 10k Pull-down, SS GPIO15 G Ground GND 5V 5 V - 3V3 3.3 V 3.3 V RST Reset RST Included 1x Wemos D1 mini Pro (based on ESP8266EX) 2x Pin header (short) 2x Female connector strip (short) 2x Female connector strip (long)

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The CubeCell series is designed primarily for LoRa/LoRaWAN node applications. Built on the ASR605x platform (ASR6501, ASR6502), these chips integrate the PSoC 4000 series MCU (ARM Cortex-M0+ Core) with the SX1262 module. The CubeCell series offers seamless Arduino compatibility, stable LoRaWAN protocol operation, and straightforward connectivity with lithium batteries and solar panels. The HTCC-AB02S is a developer-friendly board with an integrated AIR530Z GPS module, ideal for quickly testing and validating communication solutions. Features Arduino compatible Based on ASR605x (ASR6501, ASR6502), those chips are already integrated the PSoC 4000 series MCU (ARM Cortex M0+ Core) and SX1262 LoRaWAN 1.0.2 support Ultra low power design, 21 uA in deep sleep Onboard SH1.25-2 battery interface, integrated lithium battery management system (charge and discharge management, overcharge protection, battery power detection, USB/battery power automatic switching) Good impendence matching and long communication distance Onboard solar energy management system, can directly connect with a 5.5~7 V solar panel Micro USB interface with complete ESD protection, short circuit protection, RF shielding, and other protection measures Integrated CP2102 USB to serial port chip, convenient for program downloading, debugging information printing Onboard 0.96-inch 128x64 dot matrix OLED display, which can be used to display debugging information, battery power, and other information Using Air530 GPS module with GPS/Beidou Dual-mode position system support Specifications Main Chip ASR6502 (48 MHz ARM Cortex-M0+ MCU) LoRa Chipset SX1262 Frequency 863~870 MHz Max. TX Power 22 ±1 dBm Max. Receiving Sensitivity −135 dBm Hardware Resource 2x UART1x SPI2x I²C1x SWD3x 12-bit ADC input8-channel DMA engine16x GPIO Memory 128 Kb FLASH16 Kb SRAM Power consumption Deep sleep 21 uA Interfaces 1x Micro USB1x LoRa Antenna (IPEX)2x (15x 2.54 Pin header) + 3x (2x 2.54 Pin header) Battery 3.7 V lithium battery (power supply and charging) Solar Energy VS pin can be connected to 5.5~7 V solar panel USB to Serial Chip CP2102 Display 0.96" OLED (128 x 64) Operating temperature −20~70°C Dimensions 55.9 x 27.9 x 9.5 mm Included 1x CubeCell HTCC-AB02S Development Board 1x Antenna 1x 2x SH1.25 battery connector Downloads Datasheet Schematic GPS module (Manual) Quick start GitHub

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Specifications CM4 socket Suitable for all variants of Compute Module 4 Networking Gigabit Ethernet RJ45 connectorM.2 M KEY, supports communication modules or NVME SSD Connector Raspberry Pi 40-PIN GPIO header USB 2x USB 2.0 Type A2x USB 2.0 via FFC connector Display MIPI DSI display port (15-pin 1.0 mm FPC connector) Camera 2x MIPI CSI-2 camera port (15-pin 1.0 mm FPC connector) Video 2x HDMI port (including one port via FFC connector), supports 4K 30fps output RTC N/A Storage MicroSD card socket for Compute Module 4 Lite (without eMMC) variants Fan header No fan control, 5 V Power input 5 V Dimensions 85 x 56 mm Included 1x CM4-IO-BASE-A 1x SSD mounting screw Downloads Wiki

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The AD584 4-ch Voltage Reference Module is designed to provide stable and accurate reference voltages of 2.5 V, 5 V, 7.5 V, and 10 V. It incorporates the AD584 integrated circuit, known for its high accuracy and stability. Features Multiple Output Voltages: The module can output four different reference voltages (2.5 V, 5 V, 7.5 V, and 10 V) accessible through a single port. Microcontroller-based Switching: An onboard microcontroller facilitates switching between the four voltage outputs, with LED indicators displaying the active selection. User-Friendly Operation: A single button allows for easy cycling through the available reference voltages. Transparent Housing: The module is encased in a transparent housing, offering protection while allowing users to view the internal components. Power Supply Options: It can be powered via a built-in lithium battery (not included) or through a 5 V DC input. A charging indicator provides status updates during charging. Output Interface: Equipped with 4mm banana sockets for secure and reliable connections. Included 1x AD584 4-ch Voltage Reference Module with Housing Downloads Datasheet

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