TVR010A locking mode

Hi,

The TVR010A IR remote control is often unwillingly reinitialized to an another mode by pressing a wrong key.

Is there a way to definitely lock it on Sony mode?

Tired to enter the sequence (SB013)...

It is not possible to change the IR Sony mode accidentally, unless you deliberately use the S+B (or remove the battery).

However it may be be that you are simply changing the Sony device by mistake (A - B - C - F - G keys etc - these are different devices such as TV, DVD, Satellite etc)

Simply press 'B' when you next pick up the remote (to make sure it starts in TV device mode) and it should always work fine.

Thanks a lot.

The F and G keys are probably mistakenly pressed by the students, as they are using the arrows to control a robot.

We'll think about a specific IR remote control, using a Picaxe chip, as we only need 5 keys (or a joystick).

Or simply cut off the F and G keys so they cant be pressed. They are not required.

Hi,

We would like to use several TVR010A within the same classroom. They will probably interfere with each other ; definitely not a solution.

So, we will have to build 6 remote controllers (Picaxe based), each one emitting the same address (TV) but different codes.
We need 5 commands for each controller. It is not clear if we can use every code in the range 0 to 98 (100?).

Other way : is it possible to configure the chip (SFR registers) to accept other addresses than TV?

Technoman said:

Hi,

We would like to use several TVR010A within the same classroom. They will probably interfere with each other ; definitely not a solution.

So, we will have to build 6 remote controllers (Picaxe based), each one emitting the same address (TV) but different codes.
We need 5 commands for each controller. It is not clear if we can use every code in the range 0 to 98 (100?).

Other way : is it possible to configure the chip (SFR registers) to accept other addresses than TV?

Click to expand...

Tecnoman...Maybe you could shield each IR receiver so that only signals from the intended "clicker" will be accepted (possibly fit the IR receivers with a small tube to make them more directional). I was able to do this on a project that was in the same room where a "clicker" that controlled my TV interfered with my project. JimS

@jims

I may give a try to your suggestion, but as IR are reflecting on ceiling and walls...
Imagine 6 groups of students, each one driving their robot by this mean not far one to the other. At first they might be surprised to control the next group's robot and later, funny to do it.

Technoman said:

is it possible to configure the chip (SFR registers) to accept other addresses than TV?

Click to expand...

No. The only way would be some type of bit-bashing to read and decode the incoming signal. There is a variety of example code on the forum which may help if you want to do that.

There is a project somewhere in the forum files where an 08M is used as the IR receiver and converts the Sony number code to a letter and then passes the letter on to the main processor for action. The purpose was to avoid making the main processor wait for an IR input but rather have the 08M do that job in a dedicated fashion.

You can program the 08M conversion code any way you want, so theoretically different incoming values could be different for each 08M but then the 08M sends a standardized command to the main processor. You could thus program a variety of 08Ms to transmit a common code to the main processor but do so when receiving different codes from the transmitter. This would work particularly well if you could build your own IR transmitters and program the numerical values for each button yourself and use different values for different transmitters.