Version 1.0
2021-07-23
Lemon Microbrick Reference
G
uide
Contents
Introduction .......................................................................................................................................... 2
Features ............................................................................................................................................ 3
Applications for the Microbrick ........................................................................................................ 3
Supply Voltage .................................................................................................................................. 4
Speed Controller and Failsafe .......................................................................................................... 4
Basic Setups .......................................................................................................................................... 4
Connecting the Microbrick ................................................................................................................... 5
Setting Up the Microbrick .................................................................................................................... 5
Specific Issues ..................................................................................................................................... 10
Rudder Steering .............................................................................................................................. 10
Throttle Features ............................................................................................................................ 10
Indicator LEDs ................................................................................................................................. 11
Binding ............................................................................................................................................ 11
Programming ...................................................................................................................................... 11
Transmitter or Microbrick? ............................................................................................................ 11
Programming the Microbrick ......................................................................................................... 12
Swapping the Functions of the Onboard Servos ........................................................................ 12
Changing Stabilization Response Direction ................................................................................ 12
Selecting a Receiver Mix ............................................................................................................. 13
Enabling Dual Aileron Stabilization ............................................................................................ 14
Mixing Considerations .................................................................................................................... 14
Master Gain ........................................................................................................................................ 16
Troubleshooting ................................................................................................................................. 16
ANNEX A: Tips, Tricks and Modifications ........................................................................................... 18
The Variants of the Microbrick. ...................................................................................................... 18
Adding an External Bind Function. ................................................................................................. 18
Mounting the Microbrick with double sided tape. ........................................................................ 19
Power Supply Voltage and the Onboard Speed Controller............................................................ 19
Page 1: ...Binding 11 Programming 11 Transmitter or Microbrick 11 Programming the Microbrick 12 Swapping the Functions of the Onboard Servos 12 Changing Stabilization Response Direction 12 Selecting a Receiver M...
Page 2: ...er onboard servo Channel 5 On Off control of stabilizer internal to the receiver Channel 6 Aux1 or Left Aileron in dual servo aileron setups Channel 8 Master gain control of stabilizer sensitivity int...
Page 3: ...eplacement for the popular Spektrum AR6400 style integrated micro receiver with two onboard linear servos found in many UMX size micro models from E Flite and others It is also attractive to scratch b...
Page 4: ...lses to the ESC The ESC then knows that the signal is lost and the motor should stop with slight delay Not all small ESCs will do this and you should test to be sure For the small models for which thi...
Page 5: ...2 or later Spektrum transmitter 3 results in correct control directions for Throttle Channel 5 Mode switch and Channel 8 Master Gain knob That is throttle stick up increases speed switch A forward tur...
Page 6: ...t sometimes it needs to be 3 4m from the transmitter Nearby metal objects such as a furnace fence or vehicle can also prevent binding as can a Wi Fi router or nearby active RC transmitters After the r...
Page 7: ...repeatedly Also make sure the bind button is accessible 6 Set up servos Power on If stabilization is enabled use the channel 5 switch to turn the stabilizer OFF both green and red LEDs ON 1 If you hav...
Page 8: ...R rudder Instructions for changing the response direction are given on page 12 THIS IS VITALLY IMPORTANT If stabilization moves the surfaces the wrong way i e to increase the disturbance your model ma...
Page 9: ...stop after a couple of seconds and the control surfaces should stay in their current positions If you have Master Gain on channel 8 set it to the middle of its range 11 Perform a test flight If stabil...
Page 10: ...ific Issues Rudder Steering For a model steered by rudder that does not have ailerons the above instructions still apply but there are two options 1 Set it up just like an aileron model as above but i...
Page 11: ...follow or understand as lot of it is time dependent It is easiest to understand the green red and blue LEDS if we consider it by intended function Binding Start with the transmitter off or in System...
Page 12: ...en the onboard servos you can do this on the Microbrick Essentially this action shifts the rudder servo to channel 3 and the elevator servo to channel 4 Nothing else changes 1 With the transmitter off...
Page 13: ...manent until they are deliberately changed LED A E R Mixer function None Normal wing and tail V Tail Surfaces connect to onboard servos operated by channels 3 and 4 Elevon Delta Surfaces connect to on...
Page 14: ...ould be used for ailerons and Normal must be set as the wing type in Spektrum transmitters 2 If dual aileron is set then the Microbrick actively stabilizes on both channels 2 and 6 Dual Ail or Flapero...
Page 15: ...are involved but here the mixing is done in the transmitter Let s take a look specifically at how these three types of control setup are dealt with in relation to the Lemon Microbrick The actual setti...
Page 16: ...ponse for an axis use the push button switch and blue LEDs as previously indicated Master Gain Master Gain multiplies the three individual gain values set by the three gain pots by a constant factor I...
Page 17: ...100 to 100 when the switch moves from one side to the other If not you may have to adjust servo travel on channel 5 The stabilizer is ON between 100 and 0 and OFF between 0 and 100 If you have assign...
Page 18: ...eople seeking minimum weight can remove the header pins and solder directly to the PC board pads Hint Cut the plastic header spacer between each pin and remove them one at a time LM0070M2 This one is...
Page 19: ...y only four solder pads This is perfectly adequate for a unit that is protected in a case but to save weight the Microbrick is not so protected If you mount the Microbrick using double sided tape ther...
Page 20: ...will see a maximum of 4 2v External 1 7 1 9g servos of the 5320 5330 type and linear servos intended for 1s AR6400 type bricks work fine 2 Supply is from an external brushless speed controller Typica...
