I would like to use this One Channel 0-10V DAC I2C Digital To Analog Converter here:
To control the speed of a fan based on the data collected by another external sensor in raspberry pi.
The fan itself, already has a speed control and terminals for a potentiostat control, 0 to 10 VDC:
and wiring for an optional speed control (wall mount) here:
the manufacture of the fan says that if you can provide an analog 0-vdc signal, it will work to control the fan speed.
Hence my interest in this 0-10V DAC control. I did have a few questions:
Being I2C, would it work directly with a GPIO of the Raspberry Pi 3 or 4 or do I need an adapter?
How clean is the power output from the this device?
Having a power boost on board, will this over heat if the voltage is high (say 8 to 10 VDC) for prolonged periods of time?
thanks for your help
Thanks very much!
Will I be needing this adapter to connect it the 0-10V DAC board and the RPI?
In our opinion, the only thing the Raspberry Pi 4, 3, and Pi 2 are truly lacking is an I2C port. (Of course you may have guessed by looking at our product offerings that we are admittedly a little biased. No worries.) The TOUTPI2 is a...
And, do I need just these two components (0 to 10 VDC DAC board and I2C shield) to create the desired 0-10 VDC signal to control the fan speed via RPI? It is important that I have access to the full range of 0-10 VDC otherwise I cannot put the fan in full speed. I was reading on another post about having a " PCA9306 I2C Data and Power Level Shifter 0.3VDC" not sure if I will need that also.
Also, what is the difference between the above product and this?
Industrial Grade High Accuracy 12 bit Raspberry Pi 0-10V Analog Output Shield. Ideal For Interfacing Industrial Analog Input devices like Light fixtures, PLC, solenoids, valves and much more.Works With Raspberry Pi 2,3,Zero. Comes with I2C interface...
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The first part is an I2C shield. it makes wiring easy.
In order to get full 10V you will need to set the input power supply to 5.5V. if you use Pi 5V which stays around 18.104.22.168V you wont get full 10V.
Thanks for your help, so far! I’m still pretty new to this. Ok, Could you please tell me what hardware I need to purchase to be able to get the 0- 10 VDC (or close to it, i.e. 9VDC is ok too).
The 0 to 10 VDC DAC board
So, I do NOT need the PCA9306 I2C Data and Power Level Shifter? It sounds like the shield level shifts to 5V, can you confirm?
Which RPI supports 5V? I thought they were all 3.3 V?
The only two part you will need is
The 0 to 10 VDC DAC board
The RPI shield has level shifter on board so no need to purchase extra level shifter.
RPI has 5V VCC supply. All the logic IO are 3.3v.
hi, ahh I see. Ok, I assume the shield will utilize the 5 v pins (i.e. 2 and 4) for its power input.