emontx firmware question

Submitted by mehale on Thu, 29/08/2013 - 18:10

Hello folks,

Is there a way to have a firmware with all many sensors enabled?

I would like to have:

3 phase + voltage
pulse counter
temperature

thanks

Re: emontx firmware question

Submitted by Robert Wall on Thu, 29/08/2013 - 21:07.

You are asking a lot of a single emonTx. Yes, you should be able to do it, but if you want to measure the three phase voltages as well as the three phase currents, you will need to use two analogue inputs presently unused on the emonTx and on an external circuit board add the components for the extra voltage inputs.

Re: emontx firmware question

Submitted by mehale on Fri, 13/09/2013 - 01:04.

Hi Robert,

Sorry, as I missed your post till now.

Actually I want to have 3 phases (CT sensors) + one 9v ac probe, blinking sensor and temperature readings.

I am a complete noob on arduino, so I don't know if its possible to mix all firmware together.

Thanks for your reply,

MeHale

Re: emontx firmware question

Submitted by Robert Wall on Fri, 13/09/2013 - 11:41.

I don't understand what you mean by "a blinking sensor", but you can do all the rest with an emonTx. You will not be able to measure real power on the second and third phases (to know why, read up on AC power in Building Blocks), and without the voltage of the second and third phases you will only be able to measure current and have an approximate estimate of apparent power on those phases. Depending on what you want, that might be good enough.

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