The IC 555 is wired in its conventional astable mode so that the connected green LED produces a flashing effect as long as its reset pin#4 stays above a certain positive voltage level via the red LED and the series 10k resistor. The low battery stage produces only a low voltage indication and the relevant LED shines only until the level dips below the set threshold, this might well keep the user guessing if the actual or the normal condition of the battery was OK and if the battery was functioning correctly in the meantime.įor satisfying the above results, a flashing LED indicator could be seen attached with the low battery section, using our old compatriot IC 555. This stage has been elaborately explained HERE, you may want to go through it for further details. The left side stage which uses two BJTs is a simple low battery indicator circuit, the red LED lights up as soon as the supply voltage falls below the predetermined threshold level, as set up by the 47K preset.
The figure below shows the circuit configuration of the proposed battery voltage status indicator circuit through a flashing LED indicator. Is there any way to add a second LED that will flash to indicate power is there and working? The low battery indicator circuit is working fine but I have to put my meter across the terminals in order to check it is still working. On your website because I am growing vegetables in a raised bed and have erected 12v electric fence to prevent slugs and snails eating my plants.įor this I am using an old car battery which is holding a good charge. Remember, never run a vehicle using a LiPo battery when the LVD is "OFF".Hi, I found and built your “ Low Battery Indicator Circuit Using Two Transistors Only” To prevent this, simply unplug the battery to turn the vehicle off, instead of holding the EZ-Set button. Note: A common cause of a red/green flashing LED is holding the EZ-Set button too long when turning a vehicle off. If the ESC shows a steady red light, the procedure was a success, and your vehicle is ready to drive. When this happens, release the EZ-Set button and the transmitter trigger.Ĩ. You may also hear three beeps from the motor, or a descending musical tone. The light on the ESC should turn off for 5-10 seconds, then turn steady red.
#Ez go battery indicator blinking red full#
While still holding full reverse, press and hold the EZ-Set button on the ESC.ħ. The light on the ESC should turn steady or blinking green. At this point, push and hold the transmitter trigger to full reverse. The light on the ESC should flash red twice. At this point, pull and hold the transmitter trigger to full throttle.ĥ. The light on the ESC should flash red once, then shut off. Let go immediately when the light turns red.Ĥ. The ESC light will turn on green, then turn red. Press and hold the blue EZ-Set button on the ESC. Plug a fully-charged NiMH battery into the ESC.ģ. If you do not have a LiPo battery, then follow the procedure below to switch the LVD to "OFF".Ģ. Then you can simply switch the LVD to "OFF" by holding the EZ-Set button until the light switches to red. The light on the ESC should be steady green, indicating the LVD is "ON". If you have a Lithium Polymer (LiPo) battery, connect it to the ESC and turn it on. When using a NiMH battery in your Traxxas vehicle, it is important that the LVD remains "OFF". If the Low-Voltage Detection (LVD) is "ON" when a nickel-metal hydride (NiMH) battery is used an ESC may show the over-voltage alarm, indicated by a flashing red and green light. This article is designed to help when the LED on an ESC is flashing red and green.
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