Thrifty Throttle Manual - Files-
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1. AndyMark Inc Thrifty Throttle simple PWM generator for testing speed controllers User Manual Version 1 0 8 19 2014 OVERVIEW As the son of the AndyMark Handheld Motor Meter the Thrifty Throttle is a low cost no frills alternative that allows teams to test their electro mechanical systems before their control software is complete It generates a PWM that can be used to drive motor controllers such as the Talon FEATURES e PWM generation o Standard servo range 1000ms 2000ms o Arduino extended range 540ms 2300ms e Handheld o Comfortable form factor one hand operation o 9V battery operation battery not included o Uses Altiny85 an Arduino compatible microcontroller running custom Arduino firmware GETTING STARTED e Install 9V battery not included e Connect the PWM cable to the PWM output on the Thrifty Throttle black wire toward the BLK indicator on the printed circuit board e Connect the other end of the PWM cable to your speed controller s PWM input observe correct polarity e Switch the unit on with the power switch on the left side o You should now see a heartbeat blink pattern on the green LED indicating that the unit is powered and ready BASIC OPERATION The green button enables and disables the PWM output e From the neutral mode heartbeat blink o If you press the green button for a second or so then let go you will be in the standard PWM range 1000us 2000us o Otherwise i2. f you hold the green button until the LED begins flashing rapidly you will be in the Arduino extended range 540ms 2300ms o Now you can adjust the speed and direction by moving the orange throttle lever forward or back with your thumb The blink speed will now change with the PWM speed o To exit and return to neutral simply press the green button again NOTE This unit produces a PWM signal only it does not supply power to devices Devices such as servos speed controllers etc need a separate power supply 8 19 2014 mn
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