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Reversing the Polarity on LiPo Battery JST Connectors

By PTSolns

The 2-Pin JST-PH 2.0 connector is found on many LiPo batteries used in hobby drones, RC cars and toys, and of course, electrical boards and modules. These are handy little connectors, but there is one problem - the polarity convention.

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Thermal Response of Microcontrollers During Deep Sleep and Active Modes

By PTSolns

Thermal imaging reveals how microcontrollers behave in deep sleep vs active mode. See why the ESP32 microWatt outperforms for battery-powered applications.

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51

Teardown of CurrentBody Series 2 and Shark Cryoglow LED Therapy Masks

By bekathwia

Electronics teardown of LED therapy masks: how they manage power, control LEDs, and survive daily wear.

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136

DigiKey to Exhibit at Maker Faire Rome 2025

By Kevin Walseth

Visit DigiKey at Maker Faire Rome 2025 for hands-on demos of Arduino, Adafruit, Raspberry Pi, & other cutting-edge new technologies, plus exclusive giveaways.

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298

Raspberry Pi 500+ Launches with 256GB NVME SSD and 16GB RAM

By Travis Foss

The Raspberry Pi 500+ features a mechanical RGB keyboard, upgrades memory to 16GB, and includes a pre-loaded 256GB SSD with the latest Raspberry Pi OS.

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74

Non-Compliant Use of CH340 V3 Pin: Deep Dive for Engineers

By PTSolns

In this technical post, we explore the widely used CH340 IC from WCH, a popular USB-to-serial converter.

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49

Measuring the Current Draw on BMP280 Sensor Module

By PTSolns

In this post, we measure the BMP280 barometric pressure sensor in Normal mode and Forced mode using the Nordic Power Profiler Kit II (PPK2).

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190

Audio Devices: We Use Them, But What Are They?

By Aaron Gondo

Learn how dynamic and planar magnetic drivers create sound using magnets, diaphragms, and current.

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87

UNIHIKER K10 Update: 4 Programming Platforms On Windows, macOS & Linux

By DFRobot

The UNIHIKER K10 is now fully compatible with major programming platforms.

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81

FireBeetle 2 ESP32-C5 Review: Dual-Band Wi-Fi 6 & Solar Charging

By DFRobot

As Internet of Things (IoT) applications continue to evolve, developers using the ESP32 series often face challenges such as congested 2.4GHz bands, data transmission bottlenecks, and inefficient multi-device collaboration.

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57

Selection Guide of DAC Modules

By DFRobot

DFRobot’s DAC module selection guide, dividing modules into 0-2.5V/VCC, 0-5V/10V, 4-20mA categories. It details each product’s SKU, chip, channels, I/O, resolution, accuracy, features, includes functional diagrams, helping choose the right one.

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FireBeetle V1 vs V2 (ESP32/ESP8266/Arduino) Development Board Selection

By DFRobot

This guide compares FireBeetle V1 vs V2 (ESP32/ESP8266/Arduino versions), breaking down key differences in features, hardware/software compatibility to help pick the best for smart home/IoT.