@zander Yes, I may be looking for something that doesn't exists. The doppler effect module did spark my interest into there may be a module out there ...

@byron Thanks, I must admit I haven't thought about radar. After looking at the specifications sheets for the RCWL-0516 it looks like only works on do...

Servos require PWM signal to control their positioning. (See:The onboard controls will need to generate these types of signals to move the servos to t...

It will be important to know what type of batteries are in the car. If the pack contains li-ion of li-po batteries a 12V pack will usually have 3 batt...

@sj_h1 A couple more questions out of curiosity. How long do you expect the flight to last? Is there a reason the data needs to be real time transmi...

The 433Mhz radios can be found at a variety of locations and prices. Just search for 433 Mhz RF Module. You didn't mention the type of data you were p...

This may sound like a real kluge but I recently saw where a person used a microcontroller to operate servos to push the buttons on a duplicate remote ...

The publications indicate 100 meters. If you don't need all of the features that the nRF24L01 provides you might want to look at the very inexpensive ...

@foxy In your previous post you had asks if the transmitter could be used to transmit Morris code. And as you indicated it will work that way just f...

GreenBee It might be better to use a counter as a divisor for each motor and the interrupt for the emergency stop. You can sample the pressure and p...

You may want to look at the decision as to which software to start with in terms of the quantity and frequency you plan to design, and the envisioned ...

@codecage Given the tank design didn't need to send any information back to the controller I chose the very inexpensive (less than $3.00 w/ shipping...

@sumanta Yes, TurboCAD is another design CAD software that has been around for a while and at one point was very reasonably priced. Given all of the...