Revisión positiva superior para Voltímetro en Banggood Spain|Compras España

20% OFF Geekcreit® Medidor de voltaje digital miniatura de 0,28 pulgadas y 2,5 V-30 V Probador de voltaje Voltímetro de dos líneas 6,68€ 8,29€ View It

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ben 20/01/2019

1) calibrate for accuracy <1% 2) to upgrade from 0V-30V see picture input pin-3= 46kOhm (+and-) * avoid going negative! will not register anyway. 3) drain @9V supply is 11mA 4) increase readability with coloured film or paper. have fun!

Comentarios (2)

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bmwfreq64 I'dlike to use this LED voltage display to measure "millivolts"... for example "0.35mV". Is this possible, and if so, how to I modify the display to do this??
I can be directly emailed at --> bmwfreq64@gmail.com.
Thanks in advance.
-Jay
Reponder 02/03/2019

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Dimand @bmwfreq64 Can'tbe done easily mate. Just finished pulling one of these things apart completely. It uses a microprocessor with an ADC input to read the voltage. It outputs a number based on a voltage up to 2V. Scale is 20.5/1V. It has a voltage divider to generate the correct calibration.

You can remove the voltage divider and substitute your own to measure something with another scale but it needs at least half a volt to read up to a 10
Reponder 06/06/2019

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