Andy Morris has solved an aggravating problem. You can get a remote control for tower fans, but they’re too noisy for the bedroom. Propeller fans are nice and quiet, but they don’t come with remotes. So Andy devised a propeller fan remote control that does not require line-of-sight, which makes it easier to use in the dark.
The gadget comes with off/on, three fan speeds, and multicolored LEDs to indicate the fan’s speed. As a bonus, it beeps to indicate that the fan got your message.
One builder, using his remote volume control (GF case #192) in a commercial setting had trouble from spontaneous volume changes. I made a change that fixed the problem, but slowed down the response of the volume control. While developing another Gadget Freak project, I revisited the remote control system, using a new oscilloscope and saw something I missed before. Using this new information, I rewrote my receiver decoder software to greatly improve speed and noise immunity.
The volume control and this fan control use the same receiver decoder software. Also, there is an issue with the older RF receiver module. Make sure that the receiver module in the remote control you hack up is a small square PCB, about the size of a postage stamp.
If you don't have the means to program a PIC yourself, give me your mailing address and the "channel" your remote is on, and I will send you a PIC programmed with the updated software. If your "channel" is something other than A B C or D, then I will need to know which jumpers are cut in the transmitter or the discarded receiver unit. If you can program a PIC yourself, tell me so and I will email you the updated software.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies.
You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived.
So if you can't attend live, attend at your convenience.