JHEMCU SPP SBUS/PPM/PWM Signal Conversion Module, 8CH Receiver Signal Interchanger, 3.3-20V

Overview

The JHEMCU SPP is an RC receiver signal conversion module designed to convert between SBUS, PPM (CPPM), and PWM signals with automatic input-signal recognition (plug and play, no manual switching). It uses a 32-bit microcontroller for signal acquisition, processing, and conversion, and supports up to 8 channels of input/output.

Key Features

• Wide input voltage range: 3.3V–20V
• Supports input signals: PPM (CPPM), PWM (common receiver signal), SBUS (including Futaba R7008SB series, FrSky, etc.)
• 8-channel support (CH1–CH8)
• Automatic input signal recognition; plug and play
• Status indication via three LEDs (PPM green, SBUS blue, PWM red)

Specifications

Signal Conversion (Input → Output)

• SBUS input → PWM + PPM outputs simultaneously
• PWM input → PPM + SBUS outputs simultaneously
• PPM input → PWM + SBUS outputs simultaneously

Indicator Light Logic

• No signal input: all three indicators are ON (PPM green, SBUS blue, PWM red)
• With signal input: the input signal indicator stays ON; output signal indicators flash
• Example: PPM input → PPM indicator stays green; PWM (red) and SBUS (blue) indicators flash

Channel Description & Wiring Instructions

• CH1–CH8: PWM signal input/output channels
• SBUS channel: SBUS signal input/output channel
• PPM channel: PPM signal input/output channel

• When any one or more of CH1–CH8 input PWM signals: PPM channel outputs PPM, and SBUS channel outputs SBUS.
• When the PPM channel inputs a PPM signal: CH1–CH8 output PWM, and the SBUS channel outputs SBUS.
• When the SBUS channel inputs an SBUS signal: CH1–CH8 output PWM, and the PPM channel outputs PPM.

What's Included

• SPP conversion module x1
• 8P x 2.54 mm x 3-pin straight header x1
• 8P x 2.54 mm x 3-pin header x1
• 6P x 2.54 mm header x1
• 6P x 2.54 mm straight header x1

Note: Pin headers require self-soldering.

For wiring guidance before installation, contact [email protected] or visit https://rcdrone.top/.

Details

Convert RC receiver outputs between SBUS, PPM (CPPM), and PWM with automatic signal detection on up to 8 channels.

Clear onboard labels help wire SBUS/PPM inputs and CH1–CH8 PWM pins, with a wide 3.3–20V supply range.

Pin headers are included for self-soldering, making it easy to integrate into compact RC builds.