OLED RF Frequency Counter Module

Add a continuous frequency readout to an appropriate electronics project. The PLJ-096OLED-L1 module combines a compact OLED with RF input, configurable gate time and UART data output.

✅ Keep the frequency visible in the assembly - The OLED provides a local reading without a separate full-size counter.

✅ Choose refresh and resolution - Two gate settings offer different display intervals and increments.

✅ Use the result in another system - UART output provides a data path for a compatible controller.

Build the Readout Around the Signal

A transceiver or oscillator project needs the input signal and reference to suit the counter. Check the RF level and coupling arrangement before connecting it, then choose the gate and IF settings required.

This is a module, not a protected general-purpose probe. Use it within the stated 1kHz-100MHz range and verify the actual input limits. Prepare a suitable DC supply and enclosure, and use a reliable reference for calibration.

Technical details

• PLJ-096OLED-L1 frequency-display module
• Detailed range: 1kHz-100MHz
• 0.96-inch OLED
• 0.1s/1s gate; UART output
• 4.5-9V DC, 5V recommended
• RF/power cable accessories described; verify package

Match the signal and build a visible frequency reference into the project.