- DSMX / DSM2 compatible, 10-channel full-range telemetry stabilizer with full telemetry features including a built-in barometer, altimeter, Voltage probe, Dual Battery back up inputs and internal temperature sensor.
- DSMX / DSM2 compatible, 10-channel full-range telemetry stabilizer with full telemetry features including a built-in barometer, altimeter, energy meter (Current, Voltage, mAh), and internal temperature sensor
- High sensitivity gyro with proprietary stabilization algorithm ensures responsive airplane control for both electric and gasoline engine application
- BEC1 and BEC2 dual inputs allow high-reliability operation while improving setup for high current drain performance servo
- Built-in Delta, V-tail and Normal Wing mixer
- Factory calibrated and tested with Spektrum NX, Radiomaster TX16S, Taranis QX7
| Dimensions: | 66 x 15 x 24 mm |
| Recommended voltage range: | 3.9V to 8.5V (2S LiPo capable) |
| Telemetry Option: | Integrated with Barometer, Altimeter, Energy meter (Requires the use of included V/I sensor probe) and Internal Temperature Sensor |
| Technology: | DSMP™ with GEN2 SDR stack (DSMX / DSM2 compatibility) |
- Stabilization always-on feature
- Real-time variable stabilization gain control on channel 8
- All-channel failsafe
- Firmware health monitoring software stack and ultra-low operational voltage (3.6V) ensures high operation reliability
- Generation 2 SDR stack ensures the fastest channel searching and advanced algorithm for signal recovery with ultra-low-latency experience
- Antenna diversity improves the reliability of the wireless link
- Range equal/better than other proprietary receivers
- Satellite port for additional signal diversity
- Gyro stabilization activation with either AUX2 or Gear channel
- 3 potentiometers for individual gain tuning
- Voltage probe plugs into available positive socket on battery/ balance plug
User manual
- See 7CH Telemetry Essential Instructions R1.0.pdf - Google Drive and also here if you prefer a video
Quick Reference Guide
Reset stabilizer
- Connect power
- Hold F and B buttons (approximately 5 secs+) until all LED flashes randomly
- Press the C button. Multiple LEDs flash a few times to complete the operation
Bind with bind plug
- Insert bind plug on Channel 10
- Connect power
Bind without bind plug
- Connect power
- Hold the B button until the red LED flashes
Bind with a satellite without a bind plug
- Connect power
- Hold the B button until the red LED flashes
- Disconnect power
- Plug the satellite wire connector into the stabilizer
- Connect power
Failsafe
- Connect power to the receiver and ensure the servos are working with the transmitter
- Press the F button for 3 seconds until green changes from off to on and vice versa to change the failsafe setting. Channel value is saved as failsafe default at the time the green LED turns on.
- Turn off the transmitter and wait 2 seconds to ensure the failsafe is activated accordingly by ensuring there is torque generated with finger-pushing the servo linkage if it was to be set. Vice versa.
Stabilization activation switch
- Disconnect power
- Insert bind plug to channel 8
- Hold the C button
- Connect power. Wait for about 1 second until the 6 LEDs flash.
- Release the C button
- Press C to make changes within 3 seconds. Green = CH7, Blue = CH5.
- Wait for 3 seconds and remove the bind plug
Wing Mode and Dual Aileron
- Disconnect power
- Insert bind plug to channel 9
- Hold the C button
- Connect power. Wait for about 1 second until the 6 LEDs flash
- Check the receiver label/user manual to understand the referred LEDs' operation
- Release the C button
- Observe which red LED is flashing and brief press C to select the required mode
- Press C to toggle between settings. On means selected. Exit automatically in 5 seconds.
- Wait for 3 seconds and remove the bind plug
- Ensure transmitter mixing is set accordingly for dual aileron if stabilized dual aileron is to be configured.
Gyro direction
- Check the receiver label/user manual to understand the referred LEDs' operation
- Connect power and wait 1 second
- Hold the C button and wait for about 1 second until the 6 LEDs flash
- Release the C button
- Observe which red LED is flashing and brief press C to select the required mode
- Press C to toggle between settings. On means selected. Exit automatically in 5 seconds.
- Wait for 3 seconds and remove the bind plug.
V/I sensor calibration
- Turn on the receiver and transmitter. The telemetry report page may optionally be checked during and after calibration.
- Plug the V/I sensor. Make sure the required DC loading device such as a brushless motor with ESC as well as the current and voltage meter is connected.
- Press the button for 2 seconds but no greater than 5 seconds
- Observe 3 green LED flashes. Ensure 8.4V is provided to the V/I sensor.
- Press F or C button
- Observe 3 red LED flashes
- Turn on the DC loading device by throttling the transmitter. Ensure 4A is drawing across the V/I sensor. Be careful with the motor spinning if it is to be used.
- Press the B button to save and exit.
V/I probe calibration
- Turn on the receiver and transmitter. The telemetry report page may optionally be checked during and after calibration.
- Plug the V/I sensor. Make sure the required DC loading device such as a brushless motor with ESC as well as the current and voltage meter is connected.
- Press the button for 2 seconds but no greater than 5 seconds
- Observe 3 green LED flashes. Ensure 8.4V is provided to the V/I sensor.
- Press F or C button
- Observe 3 red LED flashes
- Press the B button to save and exit.
Gain setting
- Adjust via the 3 dials or real-time master gain on channel 8 depending on the transmitter channel's availability.
View setting LEDs with all on
- Press the C button briefly (no more than 2 seconds).
2022-10-24
QuickStart Guide
Lemon 7 and 10-channel Stabilized Receivers (LM0086, LM0087)
See Essential Instructions [LINK] for much more detailed discussion and more options. This guide assumes use of a Generation 2 Spektrum transmitter (DX6, DX8G2, NX, iX, etc.) to control an electric powered model. Instructions for earlier Spektrum or other transmitters are coming.
To use receiver without stabilization
• Power is supplied by the throttle connection on CH1, as is usual for electric models.1 • To bind, either use a bind plug before applying power, or Button B after applying power.2 • Put the transmitter into Bind mode (see transmitter instructions).
• Red Status LED on receiver must be flashing during bind and must be solid when completed. • Check that all servos and throttle work correctly.
• Adjust servo directions, throws, control rates, and any required mixes in the transmitter. • By default, the receiver will use No-Pulse Failsafe. The green Setup LED will be OFF.
To use optional Pre-set Failsafe
• Set transmitter controls in the positions desired in case of signal loss.
• Power cycle the receiver. After 3 seconds but within 60 seconds, press and hold the F (Failsafe) button. Release F when the green Setup LED turns ON. This indicates all channels are set.
To use receiver with stabilization (seven or more
channel transmitter)
• Set up the receiver as above. Note that with
stabilization any Elevon or V-Tail mixing MUST be
done in the receiver. See Essential Instructions.
• Activate one of following five options as indicated
by illumination of red LEDs (R1, R2, R3).
A: Delta Wing (Elevons) – R1
B: V-Tail – R2
C: Normal wing, normal tail – R1+R2
D: Dual Aileron, normal tail – R1+R2+R3 E: Dual Aileron, V-Tail – R2+R3
• To select an Option:
Figure 1: Lemon 7 and 10 channel stabilizers. LEDs, buttons and adjustment pots are identical on both.
1. With receiver OFF, place a Bind Plug on channel 9 (10 channel Rx) or 6 (7 channel Rx). 2. Press Button C and hold while powering ON the receiver.
3. Release Button C when all six programming LEDs flash (three red, three green). 4. Red LEDs now show each option for 3 seconds in the following sequence: R1, R2, R1+R2, R3. 5. When the desired option is reached, tap Button C twice in quick succession. 6. Allow the receiver to exit from Option mode.
7. If required, repeat the process to set dual aileron channels (R3) in the same manner. 8. Remove Bind Plug.
• Transmitter channel 7 is assigned to Stabilizer ON/OFF.3 Set up a switch on that channel. • Stabilizer ON is indicated by the green Status LED.
• Channel 8, if available on the transmitter, is assigned to Master Gain. Put a knob or slider on that channel.
1 BEC1 and BEC2 on the 10-channel are used to supply power for more complex setups. See the Essential Instructions. 2If you have attached a satellite receiver and are using Button B for bind, power cycle the receiver at this point. 3 This solves the issue with earlier stabilized receivers that channel 5 was not available for use as the gear channel.
Lemon 7:10-channel Quick Start R1.docx 1
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To use stabilization with a six-channel transmitter
Change Stabilization ON/OFF to CH 5. See Essential Instructions for details.
To set stabilization directions (THIS IS VERY IMPORTANT)
When the plane is disturbed (rotated sharply) the surfaces MUST move momentarily in the direction that will counteract the disturbance.
For example, if the right wing drops, the right aileron should go down briefly to lift the wing. If the nose drops, the elevator should go up briefly to lift the nose. If the plane’s nose yaws right, the rudder should go left momentarily.
To reverse stabilization response on a control axis:
1. Test stabilization on all three axes and note any that need to be reversed. 2. With the receiver powered ON, press and hold Button C for about 3 seconds. 3. Release Button C when all six programming LEDs flash (three red, three green). 4. Each green LED will now turn on in this sequence: G1 (Ail), G2 (Ele), G3 (Rud). 5. When the LED for a surface to be reversed flashes, tap Button C twice in quick succession. 6. Allow the receiver to exit from Stabilization Direction mode.
7. Repeat as required for other surfaces.
8. Check that green LEDs are illuminated for axes to be reversed.
9. Test that stabilization directions are correct on all axes. Check again to be sure!
* Used for Stabilization On/Off on 6 channel transmitters; otherwise, it’s available as a normal servo output.
To adjust stabilization response
See Essential Instructions for details, but the following should be enough for most models. • Set the three receiver gain pots to 10 o’clock. Set Master Gain (if available) to center (0%). • Switch stabilization (green Status LED) OFF to start test flight. Only turn ON at safe altitude. • Watch for oscillation on any of the three axes. If it occurs, land and reduce gain on that axis. • This setup is adequate for basic stabilized flying.
• To optimize gain settings, adjust each gain pot (A, E, R) to give response just short of oscillation. • Increase the sensitivity of each in turn until oscillation in that axis occurs – then back off a bit. • Master Gain (channel 8), if available, can be used to adjust gain in-flight. Center position
(Ch8 = 0%) leaves gains unchanged. Clockwise increases all three gains, CCW reduces them. • Note that these receivers support rate stabilization5 only. They do not support self-levelling.
5 The receiver makes momentary corrections to compensate for turbulence and thus to smooth out flight.
Lemon 7:10-channel Quick Start R1.docx 2