Hello All
Please excuse my ignorance, but what is the simplest and most elegant way to control a voltage range with a relatively small variable resistor?
Let me explain:
I'm using a little joystick (SparkFun Electronics - Thumb Joystick) to control a bot using XBees. I need to send as wide a range of voltages into an ADC pin on one XBee as possible. Vref will be 3.3V and I'd like to vary the input as much as possible with the full throw of the 10k pot while still keeping battery usage low. The more I can vary the voltage into the ADC the more precise the signal I can send to the bot.
No doubt there's a simple way of doing this, but I'm a software person and need all the help I can get when it comes to basic hardware!
Thanks
Andy
Please excuse my ignorance, but what is the simplest and most elegant way to control a voltage range with a relatively small variable resistor?
Let me explain:
I'm using a little joystick (SparkFun Electronics - Thumb Joystick) to control a bot using XBees. I need to send as wide a range of voltages into an ADC pin on one XBee as possible. Vref will be 3.3V and I'd like to vary the input as much as possible with the full throw of the 10k pot while still keeping battery usage low. The more I can vary the voltage into the ADC the more precise the signal I can send to the bot.
No doubt there's a simple way of doing this, but I'm a software person and need all the help I can get when it comes to basic hardware!
Thanks
Andy