Deltang Rx66 DSM2/DSMX Receiver for Land-Based Vehicles

Please take a look at this notice on Rx66 availability.


Rx66 Top
Rx66 DSM2/DSMX 13V/18V Receiver with 4A Bi-Directional ESC

Rx66 is a 2.4GHz DSM2/DSMX receiver which includes one integrated 4A reversable controller for brushed motors (ESC). The motor stall current must be less than or equal to the ESC current rating; this can be increased to 6A using a heatsink. The voltage range is 3V-13V in standard form or 8.5V-18v with add-on regulator. This allows the use of 1-4S LiPo, 1-5 LiFe, 3-12 NiCd/NiMH or 1 PP3.

Size:46 x 26 x 4 mm
Weight:2.2 gm
Voltage Range:3V - 13V(18V)
Max Current:4A (6A with heatsink)
wiring adds 0.5gm ~ 2gm to the bare board weight
Rx6x Receiver Features (Deltang website)
13V operation in standard form, 18V with upgraded regulator

Rx66 is available as board-only for you to add wiring or with a range of pre-wired leads / connectors. - see the Wiring Options tab for details. If the options below do not exactly meet your needs, please contact us to discuss your requirements.

An enormous range of programming features are provide to enable you to customise the operation of Rx66 to suit your model. See Rx66 v611 Programming (Deltang website) for full details. Access to programming is either via a stick type transmitter or using the PROG3 programmer. A selection of program setups are provided as variants (-1, -2, etc.) - view the Variants tab for details.

Rx66 Top
Rx66 With Heatsink
Rx66 Connections
Rx66 With 4 Way Terminal And Heatsink
Rx66 With All Lead-Outs
Rx66 With Upgraded Regulator

Rx66-1Settings for 'trains' with separate controls for speed and direction
Rx66-2Train controller with centre-off throttle
Rx66-22As above but with Selecta enabled (for use with Tx22)
Rx66-3Mostly servo outputs
Rx66-4Settings for 'cars'
Rx66-6Settings for 'boats'

The default receiver setting is for the Low Voltage Cutoff (LVC) threshold to be determined from the voltage seen on initialisation - basically, the receiver firmware makes a 'guess' at the battery type. 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; this is done by programming the receiver.

Instructions for programming receivers using your DT transmitter are at the bottom of the information leaflet that came with the transmitter.

The receiver programming steps for LVC are:

disable LVC: 7 2 1
set LVC: 7 2 3 units tenths

e.g. to set the LVC to 6.5V, the programming steps are: 7 2 3 6 5

The basic form of the the Deltang receivers is a bare board with solder pads for you to add your own wiring. As not all modellers are able to attach wires to the tiny circuit board pads, several wiring options are available to simplify the installation. Please contact us to discuss your needs if one of the options, described below, is not ideal.

If you select one of the wiring options, and that is all you need for connecting the receiver into your vehicle, you should also select the heat shrink tube to be applied to the receiver. Otherwise, a length of heat shrink tube is provided for you to apply yourself.

Power & Motor Lead-Outs
100mm bare-end lead-out wires on the battery input and motor output using appropriately sized flexible wire, red/black for the battery input and yellow for the motor output.
Power, Motor & L Lead-Outs
Same as above plus grey lead-out wire for the 'L' pad. This option must be selected if you are using a single LiPo cell with voltage booster. The 'L' input allows the receiver to monitor the LiPo cell voltage and implement motor-cutoff when the cell is discharged.
Full Wiring (3xF, 8xP)
100mm lead-out wires on power, motor, L input and all P outputs.
Connection Wire
Battery0.15mm2 red/black
Motor2 x 0.15mm2 yellow
F1/Athick blue All unused lead-out wires must be insulated to avoid accidental contact with other wires or the loco body/chassis - this is almost certain to damage the receiver microprocessor
F2/Bthick green
F3/Cthick pink
Lthin grey
P1thin orange
P2thin turquoise
P3thin brown
P4thin purple
P5thin blue
P6thin pink
P7thin green
P6thin yellow

There have been several reported issues when using Rx66 above 14V and with a noisy motor - e.g. due to worn brushes or commutator. The electrical noise finds its way into the Rx66 regulator circuit and causes the device to operate outside its safe area. This regulator supplies the receiver microprocessor and radio transceiver with 3.3V.

The usual result is a dead regulator which is seen as no activity on the receiver LED. Suppressing the motor with 100nF capacitors and 10uF chokes in series with each motor lead does help but we cannot guarantee the Rx66 when used above 13V in standard form.

Deltang are working on a solution to the problem but there is currently no ETA for a fix.

Micron has developed an add-on regulator which addresses the problem. This is a small board mounted on the bottom of the Rx66 (see photo). The original regulator chip is removed and the new regulator supplies the receiver. When fitted with this option, we guarantee Rx66 operation up to 18V. If you wish to use Rx66 above 13V, please select 'upgraded' from the Receiver Regulator menu below.

Please contact Micron if you want additional information on the issue.

The receiver is normally supplied as a bare board, with wiring options as specified in the menus below. If you want the receiver protected against accidental contact with metal parts, please select the 'heatshrink' option.

The heatsink is attached to the Rx66 with a non-metalic screw through the hole in the center of the group of ESC devices. If using the heatshrink cover, this must be fitted and a rectangular hole cut into it above the ESC devices before the heatsink is attached - see More Images.

Price: from £45.00


Spare 150mm aerials are available for the extended aerial version of Rx65 and Rx66: £ 1.15 The remote aerial will not fit the standard wire aerial version of the receiver as this does not have the required socket; only the remote aerial version of the receiver has the socket.


© Micron Radio Control