
🔹 Adjustable output voltage with precision potentiometer
🔹 Built-in thermal shutdown & short-circuit protection
🔹 High conversion efficiency & low ripple
🔹 Compatible with Arduino, Raspberry Pi & IoT projects

🔹 Adjustable output voltage with precision potentiometer
🔹 Built-in thermal shutdown & short-circuit protection
🔹 High conversion efficiency & low ripple
🔹 Compatible with Arduino, Raspberry Pi & IoT projects


⚡Specifications
Input Voltage: 3V–6V DC
Output Voltage: Up to 400KV
Output Visibility: Electrical arcs
Dimensions: Length 65mm × Width 25mm
Application: Science experiments, Tesla coil projects, DIY electronics
Safety: Operate under supervision, keep away from sensitive electronics
Size: Compact and lightweight
Material: High-quality PCB & components

Input Voltage: 3.7V–6V DC
Output Voltage: Up to 1000kV (extremely high voltage arc)
Module Type: High Voltage Generator / Arc Ignition Module
Operating Mode: Pulsed High-Voltage Output
Ideal Use: DIY ignition, stun gun prototype, high-voltage demo, science project
Wiring: Red = Positive, Black = Negative
Output: Dual high-voltage terminals
Build Quality: High-temperature coil, strong insulation, stable performance
Size: Compact lightweight module
Recommended Power Source: 18650 battery or DC supply
Safety Note: Handle with care; high-voltage output


Build your own 2.1-channel audio system with this TPA3116D2 amplifier board, available from Electrica.


The CA-MT21 Bluetooth Amplifier is a 2.1 channel audio amplifier module featuring Bluetooth 5.0 and AUX audio input. It offers an advertised output of 2×50W stereo + 100W subwoofer and supports compatible 4–8Ω speakers.
Key Features:

Amplifier IC: TPA3116D2 Class-D Audio Amplifier
Audio Output: 2-Channel Stereo
Output Power: 2 × 50W (Advertised)
Input Voltage: 12–28V DC
Preamplifier: Integrated TL074C Operational Amplifier Section
Volume Control: Separate Left and Right Channel Adjustment
Amplifier Architecture: Efficient Class-D Design
Cooling: Onboard Heatsink
Speaker Connection: Screw-Terminal Connectors
PCB Dimensions: 92 × 68mm
Applications: DIY Stereo Audio Projects

The USB QC3.0 QC2.0 Fast Charger Module is a compact DC-to-USB charging solution designed for DIY projects, custom USB chargers, and electronic power supply applications. It supports 6V–32V DC input and provides up to 24W rated output power with QC3.0 and QC2.0 fast-charging compatibility.
KEY SPECIFICATIONS
Input: 6V–32V DC
Output: USB Type-A
Power: 24W
Voltage: 5V
Protocols: QC3.0 / QC2.0
Terminals: IN+ / IN−
Design: Compact PCB
Application: DC-to-USB Charging

The XH-M602 Battery Charging Control Module is a digital automatic charger cut-off controller featuring real-time battery voltage monitoring, adjustable start/stop thresholds, and an onboard relay for switching an external battery charger.
Important: An external compatible charger is required. The XH-M602 is not a standalone battery charger or BMS.

The UNI-T UT353 Mini Sound Level Meter measures noise from 30 to 130 dBA with ±1.5 dB accuracy and 0.1 dB resolution. Fast mode follows changing sounds, and Slow mode gives a steadier reading. The backlit LCD, MAX/MIN mode, and Data Hold make it easy to check noise from fans, appliances, machinery, and speakers.