Lemon Microbrick Reference Guide
Page 18 of 20
ANNEX A: Tips, Tricks and Modifications
Some stuff that may be useful.
The Variants of the Microbrick.
Lemon sell four different variants of the Microbrick. Here they are in the likely order of popularity:
LM0070M1.
Has a Molex Picoblade 1.27mm pitch 2 pin battery lead and a 3 pin (only two are used) Nano 1.27mm round pin
motor connector. The battery lead and Nano connector are the same as those found on the vast majority of
UMX type models that have the Spektrum AR6400 brick receiver with onboard linear servos. The white JST-SH
connectors on the Microbrick are the same as the AR6400 as well. Basically, this is a drop-in replacement for the
extremely popular Spektrum linear servo bricks. The outer servo arms even move the same way as the linear
bricks and a UMX brushed gearbox motor plugs straight into the two left sockets of the Nano connector.
LM0070H.
Has a 5pin 0.1” header soldered to the PC pads. This one has two main applications.
It is the obvious choice for 2s applications which will normally have a speed controller to run a brushless motor.
The throttle lead from the speed controller plugs on to the 3 right hand pins and also supplies power to the brick
and any external servos from its BEC. The two left hand pins are ignored.
It is the “general purpose” version. You can solder anything you require to the 5 pins easily. People 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 identical to the LM0070M1 except it has a Molex 2.00mm pitch 51005/6-0200 connector. This is
commonly called a Losi or Walkera connector, and comes on many 1s or 2s quad LiPo batteries – but check the
polarity carefully as the Losi and Walkera versions are different and the Microbrick is not protected against
reverse polarity! It is intended for 1 or 2s brushed applications with those batteries.
LM0070JST.
This one is identical to the LM0070M1 except it has a JST-RCY 2.50mm pitch connector. This is the well-known
but old “JST Red” connector, and also comes on many 1s or 2s LiPo batteries. It is intended for 1 or 2s brushed
applications with those batteries.
NOTE: Although the Nano connector on the LM0070M1, LM0070M2, and LM0070JST has three sockets it is NOT
suitable for connection of a brushless motor. There is no onboard brushless speed controller on the Lemon
Microbrick.
Adding an External Bind Function.
The Lemon Microbrick has a Bind Button on the PC board.
This has two significant advantages:
1. It cannot be lost like a Bind Plug. And it is smaller and lighter than a bind pin connector which matters on
this micro receiver.
2. It’s much more reliable than the Autobind function found on many of the 1s micro receivers such as the
Spektrum™ AR6400 UMX bricks. Anyone who has tried to rebind one of those in an indoor stadium
swamped by Wi-Fi 2.4GHz signals will appreciate that.
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