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BMK E20 Motor & Band Burner Timer

Regular price £14.90

Tax included.

Ideal standalone motor timer and dethermalizer solution for E20 class models and other small electronic flight model builds.

Simply, it's running two different timers on a single board. One for motor run time and the other for the band burner. 


You can keep the battery installed during the flight day or more.
The low power electronics can wait at the idle mode for 42 days (!!!) with a tiny 100mAh battery.

This image has an empty alt attribute; its file name is heater-1.png


The hand winded special Ni-Chrome heater will get red hot in a second with only 1000mA current. You can also remove the heater and solder a DT motor.

 


E20 Timer connection schematic

Timer Setup

  • Press and hold the button before plugging the battery.
  • Plug the battery when holding the button
  • The LED will turn solid red.
  • Release the button and the LED will be turned off.
  • Press and hold the button and count the LED blinks for the motor timer
  • Each Blink adds 1 second to the timer. For example, 30 flashes, means 30 seconds. (Max. 60 seconds for the motor)
  • Release the button when you rich the required timer duration.
  • The LED will turn solid off and save the motor timer value.
  • (If you don't want to change the DT timer value, You can remove the battery here.)
  • Press and hold the button and count the LED blinks for the DT timer
  • Each Blink adds 1 second to the timer. For example, 30 flashes, means 30 seconds. (Max. 250s for the DT)
  • Release the button when you rich the required timer duration.
  • The LED will fast flash 3 times when saving the DT timer setting.
  • Then will return to normal mode. Now you can remove the battery or use your timer.

How To Use Your Timer?

  • Plug the battery
  • If the battery voltage is above 3.7v, the LED will flash every 2 seconds.
  • If the battery voltage is below 3.7v, the LED will flash twice every 2 seconds. You must recharge the battery.
  • Press and hold the button for at least 2 seconds to arm the timer before launch. When armed the LED will solid red.
  • Release the button when launching and the timer countdown will start. During the countdown, the LED will flash fast.
  • When the first countdown is complete, the timer will turn off the motor.
  • When the second countdown is complete, the timer will turn on the heater for 2 seconds.
  • Click the button to cancel If you have accidentally released the button or your model has landed before the countdown is complete.

 



Features

Maximum Motor Timer Duration : 60 seconds
Maximum DT Timer Duration : 250 seconds (4 minutes 10 seconds)
Timer Steps : 1 second
Timer Tolerance : +-1% typical
Timer Activation Method : Hold the onboard button for at least 2 seconds, the timer will start when the button is released. 
Timer Cancel Method : Click the onboard button
Motor Ramp : 0.3 seconds  (1.0s until 10/09/2021) 
Operation Voltage : 3.0 - 5.0v (compatible with 1S LiPo battery)
Power Consumption : 0.06mA @ idle / 0.6mA @ countdown / 1000mA @ burning(2 seconds).
Maximum Output Current : 5A continuous
Low Battery Warning : <3.7v (double flashes @ idle mode)
Dimensions : 31mm x 12mm x 5mm
Weight : 1.6g