Hello,
I currently have an arduino uno receiving serial input from a computer with instructions. With these instructions, I would like to activate the buttons on the radio controller in the image provided. Additionally, the controller was originally powered by 2 AAA batteries (To my understanding 3V).
My question is regarding the suitable approach for activating these buttons and powering the controller (Would the 3.3V provided by the arduino be sufficient?).
Thanks in advance for any help.
If the controller is happy with 3.3 volt and a reasonably low number of mA that can work.
How is that "Arduino" powered? Decided which Arduino?
Railroader:
If the controller is happy with 3.3 volt and a reasonably low number of mA that can work.
How is that "Arduino" powered? Decided which Arduino?
Thanks for the response, the Arduino chosen (as it's the only suitable one in my possession) is attached to my post and it is powered through USB from the computer.
if that controller transmits, you may end up using your Arduino as a fuse
Have you tried decoding and replicating the IR commands using an IR library?
Why? I don't see any problem.
aarg:
Why? I don't see any problem.
Looking closely at the picture..... 3.3 volt from an UNO powered by USB. What current draw does the spec allow? A number of radio users, nrf....., have been grounded that way.
Railroader:
Looking closely at the picture..... 3.3 volt from an UNO powered by USB. What current draw does the spec allow? A number of radio users, nrf....., have been grounded that way.
IIRC it's 300mA, but I didn't check. It's an UNO clone, which adds some uncertainty. But the AMS1117 regulator will happily go into current limiting if it's shorted. Everything will be fine after power is removed. Nothing will blow.
Okey, no smoke but a transmitter grasping for power....
A fresh alkaline battery is about 1.65 V, so two in series is 3.3 V, so it should be safe to operate the remote controller from the Arduino 3.3 V.
The two LEDs on the top of the photo and the lack of anything that looks like an antenna suggest this is an infrared controller, not a radio controller.
The four push buttons are elastomeric switches, the rubbery thing conducts when compress, nominally shorting the two traces going into either side of the squiggly line on the circuit board. With an Ohm meter, I'm guessing you'll see the trace leading to the chip is pulled up to Vcc and the other side is ground. To activate the switch, you'd apply a low level with the Arduino to trace that goes to the control chip under the black blob on the circuit board.
As suggested in post #4, rather than hacking up the remote control board, it might make more sense to figure out the control codes and generate them directly with the Arduino and a IR LED.
MrMark:
A fresh alkaline battery is about 1.65 V, so two in series is 3.3 V, so it should be safe to operate the remote controller from the Arduino 3.3 V.The two LEDs on the top of the photo and the lack of anything that looks like an antenna suggest this is an infrared controller, not a radio controller.
The four push buttons are elastomeric switches, the rubbery thing conducts when compress, nominally shorting the two traces going into either side of the squiggly line on the circuit board. With an Ohm meter, I'm guessing you'll see the trace leading to the chip is pulled up to Vcc and the other side is ground. To activate the switch, you'd apply a low level with the Arduino to trace that goes to the control chip under the black blob on the circuit board.
Thanks for the detailed reply Mark and others respectively. I have a good idea of what to look at doing now.
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