Features & Specifications + Fully open source design + Modular architecture + Full range autoswitch AC input (115 / 230 VAC) + Minimalist wire harness for simplified assembly and servicing + Up to three peripheral modules (3U, 35 mm wide) + STM32F7 ARM 32-bit MCU + 4.3” (480 x 272) TFT touchscreen display + Front panel AC power switch + Front panel bootloader switch for the main MCU (firmware upload via USB DFU) + Incremental encoder and user-defined switch + USB 2.0 OTG and 10/100 Mbps Ethernet connectivity + Four power relays for coupling various power outputs + Dedicated full-duplex SPI for each module + Dedicated bootloader control for each module (firmware upload via UART, SPI, or I²C) + Low noise Ø80 mm cooling fan with speed control + Remotely controlled by 300+ SCPI commands using EEZ Studio or similar SCPI controllers + Open source HMI with multiple color themes + Custom made aluminum enclosure with compact size: 290 mm (W) x 123 mm (H) x 240 mm (D)

makerPower Solar is a combination intelligent solar battery charger and 5 V power supply. It allows technical professionals and hobbyists to take their embedded systems and Internet of Things devices off the grid and locate them anywhere. It can operate as a simple stand-alone power supply or as a peripheral capable of fully reporting power conditions. A true maximum-power point (MPPT) algorithm extracts every joule of energy from all solar conditions.

Features and Specifications + USB2 High-Speed Hub + 4x USB2 High Speed (480 mbps) downstream ports + 1x USB2 High Speed (480 mbps) upstream port + 5th endpoint on USB hub exposes I2C, SPI, UART, and 2x GPIO + Data lines to each USB port can be disconnected via software commands. This allows errant USB devices to be “unplugged” virtually and re-enumerated. + USB digital signals can be boosted to help drive long cables. + Power Monitoring & Control + 5 V power on each downstream port can be individually turned on and off + Monitor the power consumed by each port at up to 200 Hz at a resolution of 13 mA + Adjustable (per-port) current limits between 0.5 A and 2.6 A + Onboard regulator supports 12 V to 24 V power input and generates 6 A of 5 V power for downstream USB devices; both voltages can be monitored by the internal MCU. No power is drawn from the upstream USB port. + Input power is protected from over-voltage events and reverse-polarity connection. + Physical IO + mikroBUS header to add additional sensors and connectivity. Solder jumpers allow the UART and SPI pins to connect to either the USB hub or the MCU. + JST GH connector with UART and 2x GPIO, controlled by the USB hub. + 2x Sparkfun Qwiic connectors enable easy attachment of I2C sensors to the USB hub or to the internal MCU. + 5x RGB status LEDs to visualize port power draw + 5x RGB status LEDs to visualize port connection types

The CircuitSetup Split Single-phase Energy Meter is an affordable, accurate, remote energy monitoring device for your entire home. It can monitor energy usage in real time, independent of your power utility’s meter, and can be easily hooked up to any wireless micro-controller (like an ESP8266, or ESP32) to transmit energy data into a program like EmonCMS. It can also be used to monitor solar systems to keep track of how much power you are generating from the sun. It uses safe current transformer clamps to sample current - no AC wiring is required.

Features & Specifications: + IC: MicroChip ATM90E32 + Connectivity + SPI Interface to connect to any Arduino compatible MCU + Two IRQ interrupts, and one Warning output + Energy pulse output (pulses correspond to four LEDs) + Zero crossing output + Real Time Data Sampling + Two current channels + One voltage channel (expandable to two voltage) + Measurement Error: 1% when calibrated + Dynamic Range: 6000:1 + Gain Selection: Up to 4x + Voltage Reference Drift Typical (ppm/°C): 6 + ADC Resolution (bits): 16 + Calculates + Active Power + Reactive Power + Apparent Power + Power Factor + Frequency + Temperature + Other Features + Can use more than one at a time to measure as many circuits as you want, including solar power generation + Uses standard current transformer clamps to sample current + Includes built-in 500mA 3v3 buck converter to power MCU board + Compact size at only 40 mm x50 mm

Features & Specifications + USB Power Monitoring + Range: 0–500 mA (constant), 0-24 V + Resolution: 0.025 mA, 10 mV + Accuracy: ±1% current, ±1% voltage + VIN Power Monitoring + Range: 0–6 A (constant), max 8 A (spike), 0-24 V + Resolution: 0.25 mA, 10 mV + Accuracy: ±1% current, ±1% voltage + OLED Display + Display voltage and current for USB and/or VIN + Room for three to four digits + Display available for use by your application + I2C Interface + Configure shield + Query measurement values + Open Source (to be released when shipping begins) + firmware + hardware + documentation + Dimensions + Size: 69 mm x 18.2 mm x 18.5 mm + Weight: 10 grams + Power + USB connector: mini Type-B + Current draw: ~10 mA

Features + Easy to install + Cool and modern design + Combines all the intelligence in a compact space: 24 cm x 22 cm x 8 cm + Weight: ~2 Kg (with enclosure, + without cable) + Working temperature: from -20° to 55° Celsius + IP57/IK08 protection

The wESP32 is an ESP32-based core board with wired Ethernet connectivity and power over Ethernet (PoE). It was designed to help you quickly create zero-setup, single-wire-installation network-connected devices. By combining a powerful microcontroller with excellent community support, 13 W of available power, reliable connectivity, and a compact footprint, the wESP32 gives you a head start in your next IoT design and lets you focus on your application.

Features & Specifications + Processor + Espressif Systems ESP32-WROOM-32 + Power + Default 12 V output setting for V+ provides 12.95+ W of power + Optional (bridge solder jumper) 5 V output setting for V+ provides 5 W of power + IEEE 802.3at Type 1 Class 0 compliant PoE + 3.3 V output with up to 6 W of power (taken from V+) + Support for applying external power to V+, in case PoE is unavailable + Support for powering via the wESP32-Prog USB port (limited to 5 V on V+) + Compatible with both PoE Mode A (power over data pairs) and PoE Mode B (power over spare pairs) + Connectivity + High-performance RJ-45 jack with optimized data path has excellent data throughput (iperf UDP scores up to 90 Mbit/s) + Ethernet auto-MDIX, allowing the use of both straight and cross-over Ethernet cables + Wi-Fi 802.11 b/g/n is available as a back-up if Ethernet connectivity is unavailable + Bluetooth v4.2 BR/EDR (basic rate/enhanced data rate) and BLE (Bluetooth low energy) + Programming + Optional wESP32-Prog module for programming + USB serial console via same wESP32-Prog module + Expansion + 20-pin header footprint with 3.3 V, V+ power, and 15 of the ESP32 GPIOs available for your application + wESP32-Prog module can be plugged in as needed or permanently soldered + Physical Characteristics + Full data and power path isolation in compliance with the IEEE 802.3at 1500 Vrms isolation requirement + Compact 75 mm by 40 mm footprint with 4 mounting holes compatible with common M2.5 or 4-40 screws + High-quality PCB with two oz copper and mounting hole designed to sink heat away from the PoE PD controller for optimal thermal performance

Features & Specifications + Two battery size options: + 18650 size: 1500 mAh 3.2 V LiFePO4 cell (full specification) + 14500 size: 600 mAh, 3.2 V LiFePO4 cell (full specification) + High continuous load current whether on battery or external power + 18650 size: maximum 2 A continuous load current + 14500 size: maximum 0.75 A continuous load current + Smart charge controller: + Over-charge protection: allows the device to stay plugged in continuously and provides UPS functionality. + Auto-adjusting charge current: charge current up to 1.5 A when used with high-power chargers, but automatically reduces current as needed to not overload low power sources. + Customizable maximum power point (MPP) voltage: obtain maximum efficiency when powered directly from suitably sized solar panels. + Smart power manager: + I2C communication: two-way communication with the Raspberry Pi enables easy configuration, monitoring, and clean shutdown. + Power manager and daemon: work together to ensure clean shutdowns and provide over-discharge protection, resulting in long life and high reliability. + Continuous monitoring: input voltage, battery voltage, output voltage, and load current are continuously measured and checked against user-programmable thresholds for boot, shutdown, and hard power down. + On/off button: provides convenient boot/shutdown triggers even in headless setups, with press and hold function to prevent accidental activation (external button can be added). + Green PWR LED: indicates the Raspberry Pi power state, provides feedback to the user (external power LED can be added). + Red CHRG LED: indicates power drawn from external input, whether to charge the battery or power the load (external charge LED can be added). + Wake timer: allows the Raspberry Pi to be off most of the time and wake up as needed for low duty cycle applications. + Real-time clock: keeps track of time when the Raspberry Pi is off and restores system time on boot, with the ability to wake up at an absolute time. + Auto boot: can maximize uptime by making the Raspberry Pi run whenever there is sufficient battery power or when external input power is present. + Auto shutdown: can automatically shut the Raspberry Pi down when input power is removed, either immediately or after a programmable amount of time. + Application watchdog: can alert a user by flashing the PWR LED or trigger a shutdown/reboot if the user application fails to service the timer within a configurable amount of time. + Open source host-side tools (see GitHub repo): + LiFePO4wered daemon: takes care of shutdown and RTC management. + Command line tool: allows simple configuration and access to all features. + Shared library, language bindings: C/C++, Python, and Node.js bindings allow integration into user programs. + Compact physical dimensions + 18650 size: 52 mm x 75 mm + 14500 size: 47 mm x 65 mm

Features & Specifications + Dimensions: 35 x 20 mm + Max Voltage: 24 V + Max Current: 5 A + Max Power: 100 W + Supported USB Spec Version: PD 2.0 / PD 3.0* + Power Consumption: ~10 mA (may vary based on voltage)

The Microchip ATM90E26 is a utility-grade energy monitoring chip for those of us who care about a stable, sustainable power system and who want to understand how we are using electricity so we can make savings that will benefit our families and hip-pockets. This devkit allows the flexibility to build a custom energy monitoring system using the ATM90E26 with libraries supporting major Arduino flavours, mbed, Particle, and Raspberry Pi.

Features & Specifications + Main ASIC: ATM90E26 + Connectivity: Tested with Wi-Fi, Bluetooth, LoRa, and 3G host boards + Accuracy: Nominally 1:5000 accuracy of the ASIC, actual accuracy will depend on choice of current and voltage transformers + Compatibility: Arduino, mbed, and any SPI capable host processor + Power Consumption: Total power consumption is depenedent on host-processor and network usage + Dimensions: Depends of reward level chosen, DIN-Rail unit uses standard M2 enclosure + Weight: Depends of reward level chosen, DIN-Rail unit weighs 120 g

USB connections can transfer both information and power. UsbSafe² is a device for protecting USB-connected hardware from both excessive voltage, current and unauthorized data access. Unfortunately, the practice of “juice jacking” (accessing data from a device connected to a public charging station), has become all too common. UsbSafe² provides a unique combination of an anti-juice jacking mode with protection from faulty power sources. With UsbSafe² you’ll feel safer knowing that your valuable gadgets are protected and secured, wherever you go and whatever you plug into!

Features & Specifications + Over-voltage protection. (activated at 6.5 V or over) + Current monitoring: five levels (user selectable): 0.5 A, 0.9 A, 1.5 A, 2.1 A, 2.4 A + Max. voltage drop: 200 mV @ 2.4 A + Max. input voltage: 15 V + Data integrity mode (set by user) + Power settings stored at power loss + USB 2.0 verified + Indoor use only Size: 72 x 26 x 12 mm (2.8 x 1 x 0.47 in.)

Features snapVCC uses a buck converter for efficient regulation of battery voltage. snapVCC has an LED power indicator, reverse polarity protection, and you can switch between 3.3V and 5V by just switching a jumper.