Now with option to run at 18V
Rx65 is a 2.4GHz DSM2/DSMX receiver which includes one integrated 3A reversable controller for brushed motors (ESC) plus 11 auxiliary outputs (8xP, 3xF) for lighting, sound trigger, couplers, ... The voltage range is 3-13v in standard form or 8.5V-18v with add-on regulator.
The data on this page is for the latest version, Rx65c. Information on previous versions of the Rx65 maybe found on the Deltang web page. If your motor has a stall current greater than 3A, take a look at the Rx66 which can handle up to 18V and 6A.
|Size:||38 x 14 x 4 mm|
|Voltage Range:||3V - 13V or 8.5V - 18V|
| wiring adds 0.5gm ~ 1gm to the bare board weight |
Rx6x Receiver Features
13V operation in standard form, 18V with upgraded regulator
Rx65 is available as board-only for you to add wiring or with a range of pre-wired leads / connectors. 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 Rx65 to suit your model. See Rx65 v611 Programming 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.
- More Images:
|Rx65-1||Settings for 'trains' with separate controls for speed and direction|
|Rx65-2||Train controller with centre-off throttle|
|Rx65-22||As above but with Selecta enabled (for use with Tx22)|
|Rx65-3||Mostly servo outputs|
|Rx65-4||Settings for 'cars'|
|Rx65-6||Settings for 'boats'|
- Low Voltage Cutoff:
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
- Rx Regulator:
The Rx65c voltage limit was reduced to 13V due to issues with the on-board regulator device with input voltage over 14V. The Deltang view was that electrical noise from a motor with badly worn brushes or commutator was finding its way into the Rx65 regulator circuit and causing the device to operate outside its safe area. This regulator supplies the receiver microprocessor and radio transceiver with 3.3V.
The usual result was a dead regulator 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 the number of failures meant that operation above 13V could not be guaranteed.
Micron has developed an add-on regulator which addresses the problem. This is a small board mounted on the bottom of the Rx65 (see photo). The original regulator chip is removed and the new regulator supplies the receiver. When fitted with this option, we guarantee Rx65 operation up to 18V. If you wish to use Rx65 above 13V, please select 'upgraded' from the Receiver Regulator menu below.
Please contact Micron if you want additional information on the issue.