If your address is a remote area, please check your post code here beforehand, in case any extra charge that need be applied.

What is a remote area?

A ‘remote area’ within the logistics context generally refers to a location that is identified by a postcode or, in its absence, a suburb or town name, which is considered challenging to serve.

Essentially, if a location falls outside our regular pickup and delivery paths, it is classified as ‘remote’. This could include areas such as distant towns, secluded islands, or sparsely populated rural areas.

Understanding Remote Area Surcharge for Deliveries

Please find the zipcode checklist here. Or search on google.

The post Remore Area Shipping Address Surcharge 2025 appeared first on ElectroDragon.

The board allows to send TTL serial TX and RX signal input and output via the plastic fiber.

Please note the plastic fiber is a cost-efffective solution, it is (1mm core) about 10 times bigger than glass fiber which is 0.1 mm.

The fiber solution is best for against signal interferences, useful application scenarios like drones signal, home domestic audiso system, etc. Read more info in our POF wiki page.

Board Features:

• Based on the standard chip application design.
• Advertised transmission distance up to 2KM. Howevery our real test is about 30-40 meters, may need further tuning.
• Use a general current limit resistor for most common case, but you can also switch to a poteniometer to tune for best transmission.
• Jumper connected 5V and VCC power supply, 5V on TXD side, and VCC on RXD side. Normally no need to change.
• Connect any serial TTL debug cable in TXD-RXD, RXD-TXD loop to test.

Documentation please see on this page. 

The post POF Plastic Fiber Cable TTL Serial Transceiver Board appeared first on ElectroDragon.

Based on ESP8266 nodemcu board this one. Please buy this alone.

Enhanced the motor driving capbility by motor chips DRV8871 (3.6A continuous, 6A peak — suitable for medium-to-high torque gear motors)

This is the V2 Version of the old board V1 here.

V2 Features:

• Backside DCDC step-down regulator MP1584 embedded on the back to provide on board power system 5V
• 2x High torque motor drive chip DRV8871
• Enlarged power trace for maximium current delivery. Get extra heatsink this one here.
• More V1 Features please see the old version.
• On board reserved power supply capacitor footprint.

V2 Note: The chip does not have enable pin and using logic inverter to save used pins.

Please hold your rover on the air for a second while powering up, otherwise it may spin motor to rush. Or find other better ways by yourself.

Docmentation please see on this page.

The post RC WIFI Rover Motor Board V2, DRV8871 appeared first on ElectroDragon.

V2 Version Features:

• Added new wiring method, the load cable can go through the current sensor directly.
• Added current sensor version 30A, default offering 10A and 30A version.
• Reserved other sensor’s footprint.
• V2 board images color green.

V1 Version Features:

• Based on HLW8032 full isolated scheme design, use isolated current and voltage sensor.
• Device support up to 380VAC, 10A.
• On board LDO LM7805, power supply for HLW8032 from 5V-24V.
• Serial data output from TX pin of HLW8032, baudrate 4800bps, please notice.

Please do not touch anywhere on the side of the sensors while using.

Board Use guide please see here. HLW8032 use guide please see here.

Energy meter series：

• HLW8032 Opical-coupler version R1.
• HLW8032 Isolated version R2.
• HLW8012 energy sensor.

The post VAC Energy Meter Power Sensor Board, HLW8032 Isolated V2 [Amp] appeared first on ElectroDragon.

Lead out all the pins to use from the A7670 module. Very cheap full function LTE CAT-1 solution.

• Default already lead the all ncessary antenna port: Network, Blutooth and GNSS. Flexible and verstible antenna socket 3-in-1 antenna port.
• Default amount SIM1 nano socket.
• GPIO controllable IO pin or manual power boot button,  default set to power on directly boot by the jumper.
• USB power and modem Port
• Network status LED and power supply LED indicator via the jumper.
• Default VBAT power supply via USB by a drop diode as a cost-effective option, but customizable as a DCDC regulator.
• Chip option A7670C and A7670SA available.

Smaller and mini size option please find here.

Documentation please see this page. 

The post A7670 LTE CAT-1 GSM GNSS BT Full Function Module [VER] appeared first on ElectroDragon.

• Simple USB Lithium Battery Charge cables with different output cable connectors.
• Default charge rate set at 1A.
• Useful for your battery with built male connectors, or as the RC toys accesories, etc
• Easy to use, plug into USB to use directly.

Cable Version VC1 == V1, 4x 2-pin female type connectors:

• XH2.54 2P
• PH2.0 2P
• 1.25 2P
• SM2.54 2P

Cable Version VC2 == V2, 2x 4-pin female type connectors:

• XH2.54 4P
• SM2.54 4P
• Note all red and orange are positive
• Useful for 2x series wiring battery but capable to charge seperatly.
• Check how to do it here (## Simple 1S to 2S management Solutions)

Note: Please triple check the postive and negative wiring, all the wirings on the PCB top side is positive RED, and bottom side is negative BLACK.

The post Handy USB Lithium Battery Charge Cable [VER] appeared first on ElectroDragon.

• The A7670 series is the LTE Cat 1 module which supportswireless communication modes of LTE-TDD/LTE-FDD/GSM/GPRS/EDGE.
• It supports maximum 10Mbps downlinkrate and 5Mbps uplink rate.
• For more detailed information please see this page.
• Support USB driver for Windows, Linux and Android etc, or AT commands software.

Board Features V2: 

• Supported for location GNSS. the tested defaulting locating timing by GNSS in open area is around 5-15 seconds, should be faster when SIM AGPS also activated.
• Tested also supported bluetooth, wifi scan functions.
• Refer for the new dimension and pin definition in wiki page NGS1141.

Board Features:

• On board USB port for power supply and data communication, driver free on windows 10
• On board DC-DC converter, support up to 18Vin, provide up to 2A power supply.
• On board logic shifter of the serial interface for 5V or 3.3V system.
• On board nano sim card slot (smallest)
• On board netlight and power led, reset button
• Default IPEX UFL antenna connector, also can be replaced to SMA.

Version we are currently supply, please also refer more information in wiki page.

• A7670C (basic) V2 only basic LTE data functions and limit LTE bands
• A7670SA (advanced) V2 supports GNSS, bluetooth, wifi scan, etc all functions

Full pin out version please see here.

More documenation please see on this page.

The post A7670 LTE CAT-1 GSM GNSS BT Mini Module V2 [VER] appeared first on ElectroDragon.

AC Current Sensing

• Based on YHDC non-invasive AC current sensor, monitoring the energy consumption.
• Support all versions including 30A or 100A, etc.
• None invasive option to measure AC mains current.
• 3x channles supported

Features:

• Support Display EDS TFT LCD 1.8”, which has SD card slot (On the backside)
• Support RF Wireless module NRF24l01
• Nokia 5110 LCD (Not supported for 2025 new version)
• EDGPU serial LCD (Not supported for 2025 new version)
• Two buttons to control (operate one analog pin)
• On board IIC, and serial standalone interface
• Fully compatible with Ethernet Shield (Wiznet 5100 + SD)
• Lead out extra pins are listed on board, easy to find and use.

Documentation: Please see the demo code on this page.

The post Arduino Energy Monitoring Shield EMS V3, YHDC CT Based appeared first on ElectroDragon.

This versatile audio board is built around the ESP32 and designed to support key audio functions such as I2S microphone recording, microSD card file playback (WAV, MP3, etc.), and amplified audio output. It’s ideal for embedded audio projects and can be extended with AI features as needed.

Key Features

Microphone Recording

• Dual onboard I2S microphones with:

  • High Signal-to-Noise Ratio (SNR) of 65 dBA

  • Wideband frequency response

  • ±1 dB sensitivity tolerance

MAX98357 Class D Audio Power Amplifier

• Output Power:

  • 3.2W @ 4Ω, THD 10%

  • 1.8W @ 8Ω, THD 10%

• I2S Sampling Rate: 8kHz – 96kHz

• No master clock (MCLK) required

• Selectable amplifier gain: 3dB / 6dB / 9dB / 12dB / 15dB

• Plug-and-play functionality

Integrated Audio Amplifier

• Built-in Anti-Clipping Function (ACF) to reduce distortion

• Excellent EMI suppression across full bandwidth

• Free digital filter modulation with direct speaker drive

• High SNR: 95 dB (VDD = 6.5V, Av = 24dB, THD+N = 1%)

• Output Power: 2.8W @ 5V (RL = 4Ω, THD+N = 10%)

• Ultra-low quiescent current

microSD Card Interface

• Bit-3 MMC mode support for reading files

• Compatible with Bit-1 SPI mode as well

Onboard DC-DC Regulator

• Wide input voltage range: 4.2V – 18V

• Output current: up to 2A

Compatibility Notice

This board is only compatible with our NWI1100 or NWI1206 boards. Please ensure proper pin alignment when using. You can search for these models for more details.

Resources

Documentation, demo code, and further technical details are available on this page.

The post Record and Playback Audio Assist Board, ESP32-Based appeared first on ElectroDragon.

Version 2M Resolutions:

• Plug and play
• ov2659
• support OTG
• 1600*1200
• all-in-one advertising machine notebook built-in

The standard cable length of the camera module is 1 meter (delivered with wiring)

Version 0.3M Resolutions

Cheap enough camera, now you can add a nice camera for any of your projects on a very low budget, like robots, cars, home system, etc.

Features:

• Chicony OEM on board camera PCB Board
• 0.3M resoultion, 30FPS
• Operational voltage from 3V3-4V for long term stable work
• Adjustable focus from 0.5CM to infinite, can be used for macro photography (remove the glue by knife on the lens and turn it to change focus)
• Directly recognize by Windows 7 PC (“HP Build in camera”)
• Can DIY it to a USB camera, serial connect two 1N4148 on VCC to step down the USB voltage from 5V to 3V3, black “-” label to 3V3 of camera.
• Pin definition on the back of the board
• Special 0.8mm connector

Package includes the one of the camera PCB board, a cable with 0.8mm connector and two 1N4148 diodes

Documentation please see on this page. 

The post Laptop Build-in Camera PCB [Resolutions] appeared first on ElectroDragon.