Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

help converting a servo output to on/off

Status
Not open for further replies.

cobra1

New Member
i am currently working on a little project, i have a 2.4ghz transmitter and receiver.

the receiver is setup for use with servos which i belive require a pulsed signal, and the transmitter uses a potentiometer to control the pulsed signal to the servo,

what i want to do is remove the potentiometer and replace it with a push button, and at the receiver end intead of a pulsed output i get an on/off output.

i tried potential divider, so i could get a setpoint at which i would get an on/off output, but all i get is a dimmer, the output is always on but it goes dim when i press the button.

does anyone have any other ideas??
 
It might be easier to look up "kill switch". All of the larger gasoline powered models have them. The early ones were electro-mechanical (i.e., used a servo and microswitch). Modern ones are purely electronic.

John
 
hi john

this isnt for use on a model its going to be used as a launch system for high powered rockets.

i would like to use all 4 channels if possible, 1 channel per launch pad
 
The principle is the same, isn't it. A kill switch grounds the ignition, but you could wire it another way or use a P-channel mosfet to provide real power by grounding its gate.

My recommendation was based on using something that is essentially already incorporated into the 2.4 GHz TX and RX, rather than hacking into them. Most modern TX used for models have several switched channels that are proportional, but can be set up to effectively be on or off.

Of course, if you are using homemade RX/TX, then that is not the case. Still, there are designs on the Internet for electronic switches based on either short blips or pulse width from typical hobby transmitters.

They are so inexpensive, that I have not bothered to make one.

John
 
Last edited:
ohh now i see what you mean, i missunderstood your first post.

i am using a shop bought unit that i has just took apart for its circuits.

i will have a look for this kill switch and see if it will work for me
 
Status
Not open for further replies.

Latest threads

New Articles From Microcontroller Tips

Back
Top