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0.28-inch Dual LED Digital DC Voltmeter and Ammeter
0.28-inch dual LED digital DC voltmeter and ammeter for battery, solar, and power supply monitoring.
The 0.28-inch Dual LED Digital DC Voltmeter and Ammeter is a compact and reliable panel meter designed to simultaneously measure DC voltage and current in electronic systems. Featuring a bright dual-color 0.28-inch LED display, it clearly shows voltage and current readings in real time for easy monitoring.
This module is ideal for battery monitoring, DIY power supplies, solar systems, automotive applications, charging circuits, and embedded electronics projects. With its small size and panel-mount design, it fits easily into control boxes and enclosures. The module ensures stable performance, accurate readings, and simple wiring for quick installation.

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Arduino LilyPad 328 ATmega328P Main Board 16M Compatible with Arduino
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- Digital I/O Pins: 14
- PWM Channels: 6
- Analog Input Channels: 6
- DC Current per I/O Pin: 40 mA
- Board will run from 2V to 5V.
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HC-06 4Pin Bluetooth Module Without Reset Switch
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- Use the CSR mainstream Bluetooth chip, Bluetooth V2.0 protocol standards.
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- Bluetooth protocol: Bluetooth Specification v2.0+EDR
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Text to Speech TTL Module (Serial to Speech)
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- Â Communication: Asynchronous 9600 bps serial (8N1)
- Dimensions: 1.25″x1.5″x0.37″
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Text support rate is better
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 Interface operation is simpler
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5V single power supply.
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Output directly connected to the speaker, can drive 4 ohms 3W / 8 ohm 2W speakers
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Busy status output, can be connected to the microcontroller IO or indicator light, no need to be left floating.
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 Voice effect optimization
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 Module miniaturization and easy integration
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Dimension: 33*27.5mm
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With mounting holes
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WH0201102 ABS 1.75 mm 1 kg Filament-Wanhao
- Material: ABS
- Color: White
- Material Diameter: 1.75mm
- Printing Temperature: 220° to 230°C
- Roundness Accuracy: +/- 0.5mm +/- 0.5mm
- Density: 1.31g/cm3 1.01g/cm3
- Mounted: Spool Mounted
- Net weight: 1kg
- Packaging Vacuum-sealed with desiccant to protect the filament from humidity
- Highly Detailed & Quality Outputs.
- Tried and Tested by Makenica.com
- Compatible with any FDM 3D Printer.
- ABS is stronger than PLA
- Easy to post-process.
- Environment friendly – ISO 9001 and ROHS certified

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