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Micron MR001d 2.4GHz DSM2/DSMX Receiver
MR001d is a small (30 x 18 x 11mm) DSM2/DSMX compatible receiver with 11 servo and on/off outputs. 7 outputs are via 'standard' 0.1 inch pitch pins at the front of the receiver that take JR/Hitec/Futaba connectors and 4 outputs are via an optional JST-SH connector at the rear (aerial end). MR001d is suitable for use in live-steam and large battery electric locos. It can drive speed controllers, servos and LEDs (auto-directional lights and manually switched from the transmitter). The dimensions allow it to fit easily into many 32/45mm steam or diesel locomotives. The voltage range is 3.5V to 8.4V so is best powered from a 4 or 5 cell NiMH battery for live-steam or from the 5V BEC speed controller output for battery electric locos. If you need to power from a single LiPo cell, a 5V or 6V booster may be used. MR001d is compatible with all Micron model rail transmitters, and Spektrum compatible stick-type aicraft transmitters (e.g. DX6). Selecta is supported for use with Tx22 and Tx24 type transmitters. Selecta is disabled by default but easily enabled using the supplied jumper plug. MR001d must be bound to a transmitter before use and will automatically enter bind mode if a previously bound transmitter signal is not found within 5 seconds of switch on. A jumper plug placed across signal pins 5 & 7 will force MR001d into bind mode immediately after switch-on. Auto bind may be disabled if required. All MR001d outputs can be configured for servo or 0V/3.3V switched, the standard configuration provides 5 servo outputs and 2 directional LED outputs on the JR connector pins (P1 to P7) and momentary plus latching switched outputs on the optional JST-SH connector (P8 to P11) (other configurations of servo and switched outputs can be provided to special order).
The current firmware is 1.9 and the current programming table is 1.9. See Version Info for other versions.
MR001d has 11 outputs: - P1..P7: 7 x JR style pin sets at the front
- P8..P11, 0V, 3.3V: JST-SH 6 pin socket at rear
Each output can be configured for servo or on/off switched. 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 jumper change or `by programming. 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, no Selecta |
2: MyLocoSound triggers on P3-P5 (Tx22) |
3: MyLocoSound triggers on P3-P5 (Tx20) |
H1 |
Centre-Off ch1 |
Centre-Off ch1 |
Centre-Off ch1 |
P1 |
Throttle servo or ESC on H1 |
Throttle servo or ESC on H1 |
Throttle servo or ESC on H1 |
P2 |
Servo on ch2 |
Servo on ch7 |
Servo on ch2 |
P3 |
Servo on ch3 |
Momentary on ch3, low 0V |
Momentary on ch2, low 0V |
P4 |
Servo on ch4 |
Momentary on ch3, high 0V |
Momentary on ch4, low 0V |
P5 |
Servo on ch5 |
Momentary on ch5, low 0V |
Momentary on ch5, low 0V |
P6 |
Forward Light on H1 (LED2) |
Forward Light on H1 (LED2) |
Forward Light on H1 (LED2) |
P7 |
Reverse Light on H1 |
Reverse Light on H1 |
Reverse Light on H1 |
P8 |
Momentary on ch3, low 3.3V |
Momentary on ch3, low 3.3V |
Momentary on ch3, low 3.3V |
P9 |
Momentary on ch3, high 3.3V |
Momentary on ch3, high 3.3V |
Momentary on ch3, high 3.3V |
P10 |
Latch on ch3, start 0V, toggle low |
Latch on ch3, start 0V, toggle low |
Latch on ch3, start 0V, toggle low |
P11 |
Latch on ch3, start 0V, toggle high |
Latch on ch3, start 0V, toggle high |
Latch on ch3, start 0V, toggle high |
LED2 |
P6 | P6 | P6 |
Selecta |
Disabled |
Disabled |
Disabled |
LVC |
Disabled |
Disabled |
Disabled |
Sleep time |
1 hour |
1 hour |
1 hour |
Cruise |
Enabled |
Enabled |
Enabled |
Other configurations are available to special order or you can configure yourself by programming (v1.9).
The firmware version is shown on the receiver label, either as a letter (A, B, etc.) or as 2 digits separated by '.' - e.g. 1.4.
MR001 Hardware Version | Release Date | | MR001a, MR001b | 2018-01-01 | First release | MR001c | 2022-09-01 | Combined 'a' and 'b' functionality | MR001d | 2024-02-09 | New hardware base | MR001 Firmware
Weight: 4.5gm, dimensions: 30mm x 18mm x 11mm. From: £22.00
Selecta, Throttle and Wiring Options:
Selecta: | Selecta (loco selection with Tx22, Tx24, etc). When Selecta is enabled, P2 is set to R/C ch7. The default is Selecta disabled.
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Aerial: | Select the extended aerial if MR001d will be enclosed within a metal bodied vehicle
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Throttle Control: | The full-range to centre-off option is for use with external ESC allowing use of a low-off transmitter control. Selection of throttle behaviour affects the auto-direction lights and emergency stop.
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P1-P7 pins: |
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P8-P11 Socket: |
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Output Config: | The standard and alternative output pin configurations are described on the Configuration tab. MR001d outputs can be changed by programming.
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Base Price: £ 22.00
Total Price: £ 22.00
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