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This modification uses an electroluminescent panel behind the LCD to provide the backlight. This is preferred to an LED lighting scenario due to the uniform lighting from behind as shown in the picture. I have created technical instructions which provide full color photographs to guide you through the whole process, as well as a list of parts and where to get them. Please contact me here if you would like to order a copy of the instructions for $5.00 or if you have additional questions.  FAQs
Q: What format does the technical document come in? A: The document is delivered in an Adobe PDF format. Q: What is included in the price? A: The complete technical instructions to accomplish the modification, a parts list, and required tools list. Q: How much current does this modification draw? A: My configuration shown above was measured at 38 mAh. Q: How long will this modification take? A: This modification should take an average modeler about 2 hours to complete. Q: Do I need any special tools? A: Anybody that has been into modeling for any time at all should have all the tools necessary to complete the job. A soldering iron will be required. Q: Can I turn the backlight on and off? A: The modification that I completed does not include a switch , but I did include a schematic and switch part numbers if a switch is desired. Q: Will this modification void my warranty? A: I have not personally confirmed this with Spektrum, but I would expect that it does void your warranty. Q: How much will the parts cost? A: The parts for my modification cost $38.00 including shipping. Q: Can these instructions be used for other models of transmitters? A: Although I have not modified another type of transmitter, you should be able to modify any LCD display that is accessible from the back side.
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This charger, like it's predecessor, charges at a rate that, in my opinion is too high for the LiPo batteries (0.3A stated, 0.25A measured). The nice thing about the Celectra is that the charge rates can be adjusted between 0.1A and 0.3A for each port by adjusting the pot switches inside the unit (see photo). The inside of the unit can be accessed by removing the 8 small screws from the bottom of the unit (6 inside the battery compartment, and 2 under the rubber feet on the bottom like it's predecessor).
The connectors can be purchased separately, or you can salvage them from other places (i.e. the female end can be salvaged from an old single port charger and the male end can be salvaged from a dead battery). Once the adapters have been made, plug the male end into one of the charger ports, plug the battery into the female adapter, choose the current setting on your meter and adjust the pot to the desired current.
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Dan BlanchardThis is my collection of tips, tricks, and projects that I have made over the years while enjoying my various hobbies. Categories
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