Modern Device Forum

JohnLPoole ,

Yes, shipping Rev P6 now. Very little change in output over temperature.
But I'm remiss for not having posted about it. Working on documentation

Paul Badger

Send your address to support@moderndevice.com and we’ll send you some sensors. The BOM is not public However adding leads will change the way it works just a bit too, adding some thermal resistance. I’d rather see you cut off the sensing stalk and resolder those wires back together - and I think it ...

HadriaGuy, We hope you'll have fun with the chip - it's very capable. Due to the low impedance of the the Arduino Uno serial port (1k ohm) you should use a different serial port - Arduino Mega or other microcontroller for intercepting the midi in - if you're going in that direction. Our optoisolator...

yukonnor,

I think the sustain is built into the voice, so you just have to choice voices (see ProgramChange()) that have a high sustain level like organ, violin, synth, brass and flutes. There are probably more.

Paul

Hi AA_021 There are people who have used the sensor in industrial applications, but mostly for qualitative rather quantitative results. eg is the fan running? for constant speed fans. In my opinion the sensor needs a larger regression with temp sensitivity built into it to be really useful. The prob...

With the ESP you can just run the battery to the sensor Vin and GND. Then connect the GND to ESP and also hook up however you are powering the ESP. If your run both ESP and Rev P from the 9V it's going to die fairly quickly. Give me a week or so and I can look over the code and post something for 3....

A 9V battery is not that great a choice for powering the sensor unless you are just sampling once in a while and then shutting the sensor down. The sensor draws 30 mA which will drain a 9V in about 500 mAH so it would last about 16 hours tops depending on the battery and a lot of other factors. If y...

JohnLPoole, A lumber yard bought a lot of sensors from me to try the same thing. People don't report on their projects usually though, so I can't vouch for the results. I would suggest spraying the sensors with a coating for the high humidity - or we could coat them for you for a few dollars a senso...

odbasta


I'll take a look at the project. Did you try to dig through the Github repo - some - but not all - older versions are probably there. Feel free to post some code if you want and I'll try to get it going.

Paul

Somewhere in the 1-2 watt (so ~ 10mA) range. Because the sensitivity depends upon the geometry of your power cord, it's impossible to put a more accurate number on this. This is a hackaday article which uses our current sensor to monitor a washing machine. The application needs to sense the current ...

Use the ESP Dev Module for development on Flux 32 boards. The default options work just fine.

You can probably run the module at different frequencies as long as the serial port is set up for midi speeds (31250)

Paul Badger
Modern Device

Are you comfortable with a little smd rework? It just involves swapping one resistor and adding another I believe.
Send me email and I'll tell you how to mod the Rev P.

The JeeLabs shop does not have any modified Rev P. sensors. Working on next revision now that will have more empirically derived ambient correction. Basically trimmed offset resistors, plus some other things. Shipping to Germany depends on method. You can get things there in 3 days but it’s expensiv...

Sriraj, At the present you are much better off with the Rev P which has a range of calibration and precision not found on the rev C If you include a note in your order about needing "the best ambient correction" I will send you a custom unit with a couple of resistors changed. This elimina...

yoc1983,

I just sent a request to share those images

Paul Badger

yoc1983,

Just check the product page, and also news. I'll post blog posts as soon as I get new regressions done.

Paul

MendipMac , I would advise using a meter to measure the current on the whole setup, then calculating whether your battery is going to be able to support the application for a week. For example if the total current draw is 50 mAH then 50 x 7 x 24 = 8400 mAH AA batteries capacity is in the 2200 mah ra...

yoc1983 I just ran some dummy numbers through that expression and it can't possibly be correct. For the time, you have to wait for better data. If I can find that regression I'll try and rework to find where I went wrong. Usually when I get done with a new regression, I run it backwards with the inp...

MendipMac, I'm not a betting man but I would bet you're going to find that that boost circuit is dragging 3.3V down, so do check that. That is the reference for your ADC so you'll probably need to alter the math. The setup you have is not going to be viable long term, a 9V only provides about 700 mA...

For the zero wind value - use a volt meter and measure the voltage with glass over the sensor, but don't lay the sensor flat against a table, angle it upward so sensor is in air on all sides. Measure the voltage from the temp sensor and run it through the equation VOUT = TC * TA + V0°C The Rev P use...