This document is for MR601 from version 1.9, other versions can be found
via the table on page
http://micronrc.co.uk/mr6xx_version.
MR601a Bottom
MR601a Top
The MR601a receiver is designed for use in smaller scale
model rail locomotives and road vehicles.
It provides a 1.2A reversible ESC for brushed motors and 5 auxiliary
outputs for lighting, sound triggers, couplers, etc.
It operates on 2.4GHz and is compatible with any Spektrum DSM2 or DSMX
transmitter including all of the Micron
model rail transmitters.
The voltage range is 2.7V to 13V.
MR601 requires binding with your
transmitter before use.
If purchased with a transmitter, it will be already bound to that transmitter.
Once bound, the transmitter should be switched on before the MR601.
If the transmitter is not switched on,MR601 will automatically enter
bind mode 10 seconds after switch on.
The MR601 free-air range, when used with a Micron low-power transmitter,
is 40m-50m and approximately 200m when used with
a full-power (100mW) transmitter.
This range will be reduced indoors due to absorption by furniture / fittings
and reflections from metal surfaces.
Range is also reduced if the receiver aerial is enclosed within
a metal body. In this case, the extended aerial should be used
and this is routed so that the active tip (last 30mm) is outside the
vehicle body - e.g. though a small hole into the cab space.
The aerial should not be cut short or made longer as this will
affect operation of the receiver.
It is important to perform a range check after installation to ensure
you have full control of your loco/vehicle at all positions around the layout.
Features (top)
- Compatible with all DSM2 and DSMX transmitters with up
to 10 R/C channels, both Micron
model rail and aero model stick type transmitters.
- 2.7V to 13V working voltage range.
- 5 auxiliary outputs: 2 x 'F' which are normally open switches
capable of passing up to 0.5A; and 3 x 'P' which are 0V/3.3V logic outputs
capable of supplying up to 20mA each. P outputs may also be configured
to drive servos.
- Supports the Selecta feature
for compatibility with multi-loco transmitters, MR601 must
be re-bound to change Selecta switch position.
Multi-Select can be enabled by programming so that ##RX# may be
bound to multiple Selecta positions on the same transmitter. This
is useful where 2 locos are to be run either separately or coupled
together.
- 4 pre-installed configurations providing a usable set of
receiver output to transmitter control mappings - see
Configurations (end of document).
- Most pre-installed configurations provide auto-switched front and rear
LED lights on P1 and P2 or F1 and F2
- The receiver on-board LED can be repeated to any non-servo output
(this is called the LED2 function). The default for LED2 is on P1.
- Cruise control is enabled by default - the motor keeps running if
the transmitter signal is temporarily lost. This can be disabled
using a power-on configuration change or by programming.
- A rich set of features are available
to extend MR601 functionality. These include: ESC behaviour;
servo output, momentary, latching and repeated on/off output;
automation (e.g. station stop).
- All functionality may be configured by programming using a
suitable transmitter (most Micron tx or a stick type
model aircraft tx).
Usage (top)
- Do not bend the receiver circuit board
- Connect the positive and negative input pads to a suitable battery or
power supply, via a on/off switch in the positive lead.
A resettable fuse must be placed in the battery positive lead
to protect the battery in the event of a wiring or component fault.
- Connect the 'M' pads to your vehicle motor, removing any connections
to track pickups. The motor should be fitted with suppression
capacitors to avoid injecting excessive electrical noise
into the receiver; 100nF across the motor terminals and 100nF from each
terminal to the motor case. If symptoms of motor noise interference
persists, 10uH chokes in each motor lead usually solves the problem;
the chokes must be rated for the maximum motor current.
- Connect any auxiliary circuits to the F and P pads; the 3.3V pads may
be used for powering auxiliary circuits with a maximum of 20mA per pad.
- Protect the receiver board before applying power for testing.
It must not be allowed to touch anything metal.
If MR601 was purchased with the heatshink cover supplied loose,
slide this over the circuit board.
- MR601 requires binding to a transmitter before use;
if purchased with a transmitter, it will be ready bound
(at Selecta pos #1, if the transmitter has a Selecta switch).
- MR601 has a single LED on the top near the 'L' input pad (see
the diagram below). After switching on:
- the LED will slow flash while MR601 is searching for
its bound transmitter;
- if not already bound, approx 10 seconds
later the receiver will go into bind mode and the LED will
show a rapid flash; switch your transmitter on in bind mode and
the LED flashing will slow while the transmitter and receiver
are synchronising and then light continuously.
If the LED continues rapid flashing or the slower flashing does
not stop, try again with the transmitter slightly further away
from MR601 - for most transmitters, 50cm separation works well.
- When bound:
- the LED will be on to show receipt of good data
from the transmitter,
- the LED may flicker due to electrical (e.g
motor) noise, signal
fades caused by reflections,
interference from WiFi or Bluetooth signals,
or overloading from the transmitter (this will happen if the
transmitter is too close)
- the LED will show a slow repeated flash if the transmitter
signal is lost - e.g. if the vehicle has gone out of range for
more than 1 second or you have switched the transmitter off
- the LED will show a repeated double flash when MR601
is deselected (transmitter Selecta switch is moved)
- the LED will show a repeated 5 flash if the low voltage
cutoff has triggered
- After testing, apply the heatshrink cover if not already fitted.
- Fix the receiver in place and route the aerial so that the last
30mm can 'see' the transmitter for best range.
Double sided foam-cored sticky tape is ideal for mounting the receiver.
Connections (top)
MR601 has solder pads for:
- power input (positive & negative battery)
- motor output
- 3.3V from the on-board regulator which can supply a max of 200mA
- NO NOT use to power servos
- an additional battery negative connection (0V) - useful for wiring
LEDs to P pads
- L: used to monitor battery voltage when
a booster module is used, e.g. to raise a single LiPo cell to 12V.
- P1..P3: these are logic level outputs, 0V when off and 3.3V when on;
they can be configured for on/off switching or to output a servo signal
- F1 % F2: these are FET switches capable of up to 1A;
they are open circuit when off and
connected to battery negative when on; a load should be wired
between the F pad and battery positive, or the 3.3V pad for low
current loads; labelled A & B on the receiver board and
numbered 4 & 5 for programming
LEDs on P pads should be connected between the pad and battery negative (0V)
with a series resistor appropriate to the required brightness.
There is a series 120 ohm resistor on the PCB to protect the microprocessor
IO port.
LEDs or incandescent lamps on F pads should be connected between the pad
and battery positive or the 3.3V pad and with a series resistor appropriate
to the voltage and required brightness.
Sound card inputs are usually 5V open circuit and are triggered
when connected to negative. They should be connected to an F pad.
A P pad may be used if you have more trigger inputs than F pads, or
a P to F converter is available from Micron - this is a small board
containing 1, 2, 3 or 6 FET switches.
If the P output is used directly for sound card trigger,
a 4k7 ohms resistor must be connected in series to avoid stressing
the MR601 microprocessor; the P output should be configured for 3.3V
idle and 0V when the Tx control is actioned.
Take care when soldering wires to the battery, motor, P and
F pads as these are easily damaged by prolonged application of high
temperature. A temperature controlled iron used with thin flux cored
solder is best.
Also, if using stranded wire, ensure that none of the strands 'escape' to
short across adjacent pads.
The recommended technique is to fill the
pad hole with solder and then attach the wire to the top of the pad
- i.e. don't pass the wire through the pad hole.
Low Voltage Cutoff (top)
MR601 can be powered from a battery of 2.7V up to 13V. The speed
controller will stop the motor if the battery drops below 5V but the
other receiver functions will continue to operate down to 4V.
The default receiver setting is for the Low Voltage Cutoff (LVC)
threshold to be determined from the voltage measured at switch on.
This is auto mode which is essential when the receiver is powered using
a Lithium battery (LiPo or LiIon) as these must not be discharged
below 3V per cell.
The algorithm used for this calculation
means that a 9V Alkaline or NIMH battery can often be interpreted
as an almost discharged 3S LiPo.
The solution is to either disable LVC, or set it to the correct value
for your battery.
Switching between auto and disabled can be done using a
power-on configuration change
and the LVC threshold can be set to a specific value by
programming
the receiver.
LED Error Codes (top)
If the receiver firmware detects a fault,
all functions are disabled and the LED will
display a repeated pattern of 0.5 seconds
rapid flashing followed by a N-flash where N is the error code
Flash Count | Error |
1 | Rx firmware failed startup checks |
2 | radio transceiver failed initialisation |
3 | failed to read or write the configuration data |
4 | failed to write the configuration backup |
5 | failed to restore configuration from backup |
6 | a port (P or F output) is in an unexpected state |
If your receiver displays an error code, cycle the power and contact Micron
if the error persists.
Binding (top)
MR601 must be bound to a transmitter before use. Once bound, MR601
remembers the transmitter identity and searches for this when it is
switched on.
To bind a receiver, it is switched on with no transmitter active
(for normal operation, the transmitter should
be switched on before the receiver).
The default configuration is for autobind where the
receiver automatically goes into bind mode approx 10 seconds after
switching on with no pre-bound transmitter active.
Manual binding may be configured by programming - this could be useful,
for example, if the loco is to be used by children who could forget
to switch the loco/receiver on first.
- auto bind:
- The receiver enters bind mode approximately 10 seconds after power-on
if it has either never been bound or it fails to find its
bound transmitter.
- manual bind:
- Pad P3 must be connected to 0V before switching the receiver on.
If the receiver is inaccessible, a switch can be wired between P3 and 0V.
Bind mode is indicated by a rapid flashing of the receiver LED
and the following steps should be followed to bind with your
transmitter:
- transmitter switched off
- if Selecta
is enabled, move the transmitter loco selection switch to
the required position
- switch on the receiver in bind mode (manual or auto)
- only when the LED is flashing rapidly, hold down the
transmitter bind button and switch on
- wait for the transmitter to indicate that it is in bind mode and
then release its bind button (the power LED on Micron model rail
transmitters will flash when binding)
- after a short delay, the MR601 LED flashing will slow for 2-5 seconds
and then light continuously
- the receiver is now bound to the transmitter
If the receiver LED does not come on solid (no flash)
within 10-15 seconds, the bind process has failed.
This can happen for several reasons and does not normally indicate a fault.
During binding, the receiver searches for
the transmitter's signal and this can be distorted by holding the transmitter
and receiver too close.
So, if you get a bind fail, try again after moving them slightly further apart
or changing the relative orientation of the aerials.
Binding is most reliable when no other 2.4GHz transmitters are turned on.
Loco Selection - Selecta (top)
Many Micron model rail transmitters have a 12 way switch to allow control of up to 12 locos - Deltang originated this feature and called it 'Selecta'. Using the switch, locos are brought under control one at a time. When not selected, receiver outputs hold their current setting (e.g. a loco which is moving when deselected keeps moving) and the LED shows a 2-flash pattern. The default 'keep going' behaviour can be changed to stop when deselected by programming the receiver.
The Micron implementation of Loco Selection / Selecta is fully compatible with the Deltang Selecta feature and uses R/C channel 2 by default. When Selecta is enabled, the controlling R/C channel (e.g. 2) may still be mapped to a receiver output but, of course, this will not change as the transmitter switch is rotated.
The receiver has a 800ms delay before enabling when the transmitter Selecta value is changed. This is to avoid obeying the transmitter while the Selecta switch is being moved - e.g. a receiver on Selecta #4 should not change any outputs while the transmitter Selecta switch is moved from #3 to #5.
Selecta may be enabled by default (see the receiver configuration information) and may be enabled or disabled by using a power-on configuration change (see Power-On Configuration Changes) or by programming.
If Selecta is enabled, the transmitter's Selecta switch value will be saved when the transmitter and receiver are bound. A new Selecta value (i.e. switch position) can be stored either by rebinding or by using the power-on changes to disable and then re-enable Selecta.
Note: when the Selecta switch is changed to control a different loco, the newly selected loco responds to the transmitter control settings. The current range of Selecta enabled transmitters have no model memory so cannot have different throttle settings, etc. for each loco. Thus, although Selecta may be used to manage many moving locos, this must be used with care and is not recommended. Micron intends to introduce a transmitter with model memory but the release date is not known.
Directional Lighting (top)
Most configurations have
pads P1/P2 or F1/F2 setup to drive front and rear lights;
P1/F1 powers a forward light and P2/F2 a backward facing light.
The directional lighting pins can be changed
by programming the receiver.
P1/P2 should be used for LEDs and F1/F2 for high voltage (e.g.
incandescent) lights.
MR601 has an on-board 3.3V regulator and 120 ohm resistors in series
with the P1 to P3 so limits the LED current to approximately 20mAh.
Most high brightness LEDs require much less than this so an additional
resistor should be used - e.g. 100 - 1k ohms.
The LED should be connected between P1/P2 and battery negative (0V).
LEDs or high voltage lights should be connected
between F1/F2 and either the 3.3V pad or battery positive (with
and appropriate value series resistor).
The directional LEDs follow the throttle channel if configured for
centre-off, changing when the throttle passes though the off position.
If the throttle is configured for low-off, the LEDs change only
when the throttle is at zero - i.e. the direction control can be altered
at any time but the LEDs (and motor direction) changes only when
the throttle is closed.
The throttle mode (centre or low off) can be changed by programming or
by using one of the power-on configuration changes
Cruise Control / Failsafe (top)
If the receiver loses the signal from the transmitter,
for example when going through a tunnel or behind a garden building
or some dense bushes, MR601 outputs hold their current setting
until the transmitter signal is reacquired.
The motor also continues running when a Selecta-enabled receiver
(see Selecta) is
de-selected.
This is a form of 'cruise control' which allows you to
switch off the transmitter if, for example, you are running the loco
round a continuous circuit.
Cruise control can be disabled using a
Power-On Change
or by programming.
If cruise control is disabled, the receiver will
'fail safe' and the motor will be stopped when signal is lost.
Emergency Stop (top)
Any of the transmitter controls can be used as an 'Emergency Stop' function
to rapidly bring the loco/vehicle to a stop.
Emergency Stop is not enabled by default and must be configured
by programming the receiver.
To enable Emergency Stop, you need to choose:
- the R/C channel
- whether a low or high signal is used to trigger
- the delay before stopping - i.e. the number of seconds that
the R/C channel must be in the trigger state before Emergency
Stop is actioned
For example, the Tx22X transmitter button S2 (in-between the 2 toggle switches)
could be used: this controls R/C channel 4 and the signal is low when
the button is pressed.
Power-On Configuration Changes (top)
A few configuration changes can be made without programming.
A simple link across 2 of the auxiliary P pads is used to action
the change. This is easily achieved using some needle nose tweezers
and, if they are sharp pointed, can penetrate the receiver's heatshrink cover.
A change is made by:
- connecting the appropriate P pads with the receiver off,
- switching the receiver on and observing the LED flash pattern,
- waiting until the flash pattern corresponds to the
value you want to set
- removing the connection,
- if the flash pattern is different to the setting before
you started, the change is confirmed by a continuous
rapid LED flash; you need to switch off and back on again
- if you have not changed a setting, MR601
goes directly into receive mode
The changes all toggle (or cycle) the parameter value each time the
process is performed.
The LED flash indicates the new state of the configuration parameter.
The receiver has to be switched off after the change as it will be stuck
in the rapid flash mode to indicate that the change has been made.
If you switch off before removing the P connection, the
configuration is not changed.
This is a summary of the configuration changes that can be made using
a jumper across 2 of the P pads.
Change |
Pads |
LED indication |
Reset, Backup & Progamming |
P1/P2 |
n-flash where 'n' is:
1: do nothing
2: reset
3: backup
4: disable/enable ch2/ch4 programming
5: enter programming mode
|
Selecta |
P1/P3 |
1-flash - disabled
2-flash = enabled
|
Cruise Control |
P1/P4 |
1-flash = disabled, stop in 4s after signal loss
2-flash = enabled
|
ESC Throttle Mode |
P2/P3 |
1-flash = centre-off
2-flash = low-off
|
Configuration Select |
F2/P1 |
n-flash where 'n' is the configuration number |
LVC |
F2/P2 |
1-flash = disabled
2-flash = enabled with battery voltage auto-detect
|
PWM Freq |
F2/P3 |
1-flash = 16kHz, 2-flash = 8kHz, 3-flash = 4kHz, 4-flash = 2kHz
5-flash = 1kHz, 6-flash = 500Hz, 7-flash = 250Hz, 8-flash = 120Hz
|
Each flash count is repeated twice and then increments to the next,
cycling back to 1 when the max is reached.
- The flash count for 'Reset, Backup & Programming' always starts
at 1,
- all others start at the currently configured value - e.g. if Selecta
is currently enabled, the flash count for Selecta mode will start
at 2
Remove the connection when the flash count is the value you want.
To avoid hesitation inadvertenly causing the count to skip on to the next
value, remove the connection when you see the first showing of the
LED flashes.
Note:
- when changing the configuration number,
any previous programming or power-on configuration changes
(e.g. LVC or throttle centre/low off) will
be over-written and will need to be done again.
- after making any programming or power-on changes, always
make a backup (P1/P2 or 4,12 program) so that,
should you later perform a P1/P2 reset,
the receiver is restored to the setup you made and not
the factory state.
Receiver Programming (top)
The behaviour for each MR601 pad (ESC, F or P) can be changed
using a bound transmitter.
MR601 must first be put into programming mode and then the
direction toggle switch, or elevator on a stick type transmitter,
is used to enter a program sequence one digit at a time.
The LED (and LED2 if enabled) flashes to indicate the value of
the current step in the programming sequence. For example, if the
current value is 4, the LED flashes 4 times, pauses and repeats -
this is called a 4-flash.
The programming table is large and presented in a separate
document (see micronrc.co.uk/mr6xx_progtable) which lists all of
the functions that may be changed by programming.
The table is split into 5 blocks of related functions each with the
same value in the first column.
The table columns contain the program values which must be entered to change
a particular function. For example, to change the throttle behaviour
from centre-off (forward and reverse on one Tx control) to low-off
(separate throttle/regulator and direction/reverser controls)
the program sequence 1, 1, 2, 1, 3 is entered. Each digit of this
program sequence is taken from the columns, left to right:
1 = ESC Configuration
1 = H1 (there is only 1 ESC on MR601)
2 = Low Off Throttle
1 = Throttle on R/C channel 1
3 = Direction control on R/C channel 3
One function can be changed at a time. The general method is:
- set receiver into programming mode
- enter a program sequence
- repeat until all programming changes have been made
Enter Programming Mode
There are 3 methods of getting the MR601 into programming mode:
- use the P1/P2 power-on jumper to select option 5 (5-flash) to
enter programming mode
- switch the transmitter on and hold channel 2 and channel 4 controls at
high or low extremes and then switch the receiver on;
these are the F1 and F2 buttons on a Tx20v2
and the Selecta switch and S2 button on a Tx22X;
the receiver LED will flash rapidly shortly after a signal is received
from the transmitter,
centre one or both channel 2 & 4 controls (e.g. release the buttons
on Tx20v2 or the S2 button on Tx22X
Note: the receiver always goes through an initialisation
sequence after power is applied, so you must hold the ch2/ch4 control
positions until a signal is received and the LED flashes rapidly.
- switch the transmitter and receiver on (they must be bound),
wait 5 seconds without touching any controls and then tap out morse
SOS (... --- ...) on the transmitter bind
button (or toggle the gear switch high to low for a stick transmitter);
- dots (…) will be a quick press of the button and must be
less than 1 second in duration
- dashes (---) must be greater than 1 second and shorter
than 5 seconds – 2 seconds is a reliable time
- the time between each dot or dash must be less than 5 seconds
When programming mode has been successfully entered, the receiver LED
will show a 1-flash - this is the 1 from the first column
of the programming table.
If you do not get the 1-flash, repeat the procedure to enter
programming mode. It usually takes a couple of
attempts to get the SOS method correct if you have never done it before.
Enter a Program Sequence
One programming change requires up to five choices to be made.
These are called 'levels' and each has several options.
They are documented in the programming table.
Completion of a programming change exits programming mode and requires the
receiver to be placed into programming mode again for the next change.
It is a good idea to write the programming sequence on a piece of scrap
paper and cross off each digit as it is entered so that you
don't lose track of where you are in the sequence.
You always start at the top of the first column and 1-flash is
displayed on entering programming mode.
- The flash count for a level is incremented by setting the
R/C channel 3 control low and back to mid.
- The flash count for a level may be decremented by holding
the R/C channel 4 control low while operating the R/C channel 3
control; R/C channel 4 is available on some Micron transmitters
- e.g. F2 on Tx20v2 and S2 on Tx22X and Tx24v2
- The level value is accepted and the flash count for the next
level is displayed by setting the R/C channel 3 control
high and back to mid.
MR601ul>
Most Micron transmitters have a toggle switch on R/C channel 3
which is marked A/B, or forward/reverse for a low-off transmitter:
- pushing the switch down (or toward 'reverse' for a low-off transmitter)
sets the R/C channel to a low value and increments the flash count,
- pushing the switch up (or toward 'forward') sets the
R/C channel to a high value,
accepts the flash count and moves the program sequence
on to next level or exits programming mode if the current level is
the last in the sequence
Always return the toggle switch to centre after pushing down or up.
Refer to the transmitter user manual for specific information
on the R/C channel 3 control - Tx24v2 has a rotary reverse control.
The receiver LED will flash rapidly while R/C channel 3 is high or low and
then return to a slower repeated flash when the control
is back to the middle.
After accepting the flash count for a level, the LED displays
a flash count for the current value of the next level. This could be
higher than 1-flash if the function is set in the receiver configuration
or has been previously programmed. For example:
- the default Selecta R/C channel is 2, so a 2-flash will be
displayed after entering 4, 8, 2
- if P1 is configured as a front light, a 4-flash will be
displayed after entering 3, 1
When the last level for a sequence has been accepted, the LED
will light continously and the receiver is back in normal operating mode.
The maximum number of levels is 5, but not all sequences use all 5;
if level 5 in the table is blank, the LED will light continously
after level 4 is accepted.
Programming changes are accepted only when the LED lights solid
at the end of the sequence.
If a mistake is made mid way through a sequence,
switch the receiver off to abort.
Programming Examples
These examples assume MR601 is in as-received configuration
and a Micron transmitter with toggle switch on R/C channel 3.
Tx24v2 transmitters have a variable control on R/C channel 3 - the Reverser;
the equivalent actions are:
Action | Tx with toggle switch | Tx24v2 type transmitter |
Increment flash count: | toggle down | Reverser fully CCW (reverse) and back to centre |
Accept flash count: | toggle up | Reverser fully CW (forward) and back to centre |
- Set P4 as servo on R/C channel 7
program sequence: 2, 4, 1, 6
- enter programming mode
- LED shows 1-flash (level 1, 1=ESC)
- toggle down and release once,
LED shows 2-flash (level 1, 2=servo)
- toggle up and release,
LED shows 1-flash (level 2, 1=P1)
- toggle down and release 3 times,
LED shows 4-flash (level 2, 4=P4)
- toggle up and release,
LED shows 1-flash (level 3, 1=servo)
- toggle up and release,
LED shows 1-flash (level 4, 1=R/C chan 1 - P4 was prevously a
momentary on/off output)
- toggle down and release 6 times,
LED shows 7-flash (level 4, 7=R/C chan 7)
- toggle up and release,
LED shows 1-flash (level 5, 1=normal speed)
- toggle up and release,
LED lights continously and servo on P4 responds to R/C channel 7
- Reverse servo on P4
program sequence: 2, 4, 7, 1
- enter programming mode
- LED shows 1-flash (level 1, 1=core)
- toggle down and release once,
LED shows 2-flash (level 1, 2=servo)
- toggle up and release,
LED shows 1-flash (level 2, 1=P1)
- toggle down and release 3 times,
LED shows 3-flash (level 2, 4=P4)
- toggle up and release,
LED shows 1-flash (level 3, 1=normal servo)
- toggle down and release 6 times
LED shows 7-flash (level 3, 7=adjust servo
- toggle up and release,
LED shows 1-flash (level 4, 1=reverse servo direction)
- toggle up and release,
LED lights continously and servo on P4 rotates in
the opposite direction
- Set D/F4 as momentary on/off output,
on when R/C channel 4 is low
program sequence: 3, 10, 1, 4, 1
- enter programming mode
- toggle down and release 2 times,
LED shows 3-flash (level 1, 3=On/Off Configuration)
- toggle up and release,
LED shows 1-flash (level 2, 1=P1)
- toggle down and release 9 times,
LED shows 10-flash (level 2, 10=F4/D)
- toggle up and release,
LED shows 1-flash (level 3, 1=momentary)
- toggle up and release,
LED shows 1-flash (level 4, 1=R/C chan 1)
- toggle down and release 3 times,
LED shows 4-flash (level 4, 4=R/C chan 4)
- toggle up and release,
LED shows 1-flash (level 5, 1=idle off, on when ch is low)
- toggle up and release,
LED lights continously and D/F4 switches on when Tx20v2 F2
or Tx22X S2 are pressed)
The programming table for MR601 can be found at
micronrc.co.uk/mr6xx_progtable.
Servo Throw Adjustment (top)
Servo throws (low and high end points) can be configured using a
bound transmitter, the servo centre position will always be at the mid-point
of the low and high travel.
To adjust a servo, the servo output is selected first
and then the travel adjusted using either the throttle control or
direction toggle if the throttle servo is being adjusted.
The steps below assume a Micron transmitter is being used.
If the transmitter is an aeroplane type stick transmitter then
the elevator stick corresponds to the direction toggle.
- put the receiver into programming mode (see above)
- enter the program sequence 2, P, 7, 2, where P is the output
port number (e.g. 3 for P3)
- within 5 seconds, move the control for the output being adjusted to the
end that needs adjustment:
- use the direction toggle or throttle control to increase
or decrease the servo travel:
- use the throttle control if the direction (R/C channel 3) servo
is being adjusted, or
- hold throttle knob fully CCW to decrease travel
- hold throttle knob fully CW to increase travel
- use the direction toggle for all other servos
- hold toggle down to decrease travel
- hold toggle up to increase travel
the receiver LED will flash twice per second as the servo travel is being
adjusted and stop flashing when the limit is reached.
- centre both controls to finish
the adjustment, the receiver will return to normal operating mode
after the control corresponding to the P port being adjusted
has been centred for 5 seconds.
Only one servo output can be changed at a time. Go through the
above steps to adjust a different servo output pin.
Configurations
This configuration table is for firmware version 1.9.
For other versions, refer to mrxxx_version.
The pre-loaded configurations are shown below. Unless otherwise
specified when the receiver was ordered, config 1 is enabled by default.
The other loaded configurations can be selected using a
power-on configuration change
or by programming.
Port |
1: Centre-off throttle |
2: MyLocoSound triggers on A & B (Tx22) |
3: MyLocoSound triggers on A & B |
4: Road Vehicle |
H1 |
Centre-Off ch1 |
Centre-Off ch1 |
Centre-Off ch1 |
Centre-Off ch3 |
P1 |
Forward Light on H1 (LED2) |
Forward Light on H1 (LED2) |
Forward Light on H1 (LED2) |
Servo on ch2 Steering |
P2 |
Reverse Light on H1 |
Reverse Light on H1 |
Reverse Light on H1 |
Left indicator activate=ch4, steer=ch2 (LED2) |
P3 |
Momentary on ch3, low 3.3V |
Momentary on ch3, low 3.3V |
Momentary on ch3, low 3.3V |
Right indicator |
F1/A/P4 |
Forward Light on H1 |
Momentary on ch3, high closed |
Momentary on ch2, low closed |
Brake Light on H1 |
F2/B/P5 |
Reverse Light on H1 |
Momentary on ch5, low closed |
Momentary on ch4, low closed |
Reverse Light on H1 |
LED2 |
P1 | P1 | P1 | P2 |
Selecta |
Enabled |
Enabled |
Disabled |
Disabled |
LVC |
Enabled |
Enabled |
Enabled |
Enabled |
Sleep time |
1 hour |
1 hour |
1 hour |
1 hour |
Cruise |
Enabled |
Enabled |
Enabled |
Enabled |
Other configurations
are available to special order or you can configure yourself
by programming.