Hi
>> APOLOGIES - Im not doing it any more <<
!!! Are You familiar with basic electronics and soldering and understand this device needs to be switched off when NOT IN USE?? !!!
No need to be installed on a bass.. You can remove battery and test it outside the bass... if its still ok the led will not lit up(!)
Worrying about dead battery in the middle of a tune on a gig? - You do not have to any more with this circuit!
It works with 9V battery (or 2 of them) and It can be set up via trimmer resistor to indicate any voltage between 3V and 36V
You can choose the voltage which will lit the led.
EMG, Bartolini, Seymour Duncan and others use 9 volt batteries and its recommended to set it to 7.7V
My Stagg EUB still works ok when 4V and above (4-9V range)
Blue Led 3mm diameter
Indicating range 3.0-36V - Can be set using small flat screwdriver and you will need adjustable DC Power supply - I can set it to any Voltage from 3V to 18V (in example 7.7V) DO NOT WORRY - I`ll DO THIS FOR YOU!
Current Draw(power consumption) approx 0.01A(10mA) @9V - when led is not lit - please note: THIS IS THE LOWEST DRAW I COULD ACHIEVE FROM BASIC ELECTRONIC PARTS. ANYTHING BASED ON DIODES WILL DRAW MUCH MUCH MORE(!!!) I did my lesson.
As EVERY electronic device it will drain your battery if not switched off after you finished using bass or guitar
When the voltage drops lets say below 6.5V(in this example) the led will lit up as shown in my video:
£15 + £2.69 Signed/tracked Postage 1st Class UK Posted same day if paid by 3pm
For an extra £2 I can attach/solder MICRO switch - the one you can see on some active bass guitars
How to install? You will know if you have the skill...