Ultrasonic Input Voltage From Battery Pack


I think that some of my trouble started after I got the second Ultrasonic sensor ,as I did not upgrade the battery pack (old radio shack plastic AA battery holder, rechargable 4 Nimh AA) which ran fine for 5 volts with 1 sensor. Now with 2 sensors sharing the same 5 volt pack, I think I may be getting low power current issue with both sensors , I think I will need a second 5 volt battery pack or could I now use the 7.4 volts directly out of the EZB4 since the voltage is divided by 2 sensors? Or will the 7.4 volts kill both sensors? I suck with electronics math, LOL!


The ultrasonic sensors are 5v devices. You will need to use a voltage regulator to drop voltage to 5v from 7.4 if you use the lipo pack. EZ sells voltage regulators for this purpose. They are inline regulators meaning that they connect from the ez-b to the sensor.

They are designed to be 1 per 5v sensor.


Okay thanks, that is what I suspected to be the issue with sensor low power fails .Going with regulators would be the most simple fix, I should have ordered them at the same time as the sensors to keep shipping costs lower.


If you bought the sensors from EZ-B and they are 3 wire, not 4 wire, they have the regulator built in.



No they were older cheaper 4 wire sensors from robot shop Canada , I bought 1 first then another a month later which is why I was using a 5 volt battery pack for just the first one, I now wish I bought them from ez robot to avoid this problem.


Love the Ghost busters sound file Grin


LOL! That Ghostbusters theme just had to be added considering what the robot's main purpose is. I am actually going back to that Haunted cottage property tonight where more than 2 people have died there in tragic circumstances. last time I had the robot on the spot where one guy burned himself in his mini van. After taking a few Thermal photos of weird hot and cold spots, (later the hot spot was just the damned Racoon again) but my Lipo battery went to EZB Low battery warning after only 15 minutes and that battery usually lasts me 2 nights because the motors run on another battery. The EZB has a 7.4 venom 5000 mah new battery! I want to see if that happens again tonight. Grin


That racoon again haha. Tongue

You know im thinking of running your app on a bot and taking it to that hotel i mentioned because i know their is a ghost there, a very friendly one, i wonder if that ghost would remember me 30yrs later lol?

Looking forward to your findings. Winky


so I had no idea you can just easily talk into your laptop microphone and have your voice come out of the robot, I saw DJ do that in one of his videos so really for EVP sessions that makes it more simple just to ask your own questions live.The App is good if you have a bunch of questions you want the robot to ask in a Loop and you don't need to remember them as they are all in the TTS speech EZ script.