user49347: I have an Arduino project where I am using an ESP8266 (Wemos D1 mini) powered via USB. I want/need to output an analog voltage from 0 to 10V.
Goal:
A solution that is pre-made (eg a shield or sparkfun type module) or easy to build circuit that does not require a new power supply (besides the ones I have which is 3.3V and 5V, thanks to Wemos USB power).
Many devices allow you to control them using a 1-10V signal. I have two LED drivers at home that I would like to interface with: specs1, specs2.
What would be the easiest solution to generate a 1-10 Volt signal? Is there a module I can use?
I read about Op-amps but I don't yet have the knowledge to build one myself.
Another method is a DAC, but that seems to require a separate 10 Volt power supply.

user49017: The ADM660, link below, 

is a charge-pump voltage converter that can be used to either invert the input supply voltage giving VOUT = -VIN or double it (ADM660 only) giving VOUT = 2 x VIN. 

It accepts an input range between 1.5V-7V so if you use the 5V from the Wemos USB power you'll be able to reach the desired 10V for your application, and it's cheap :)
http://www.analog.com/media/en/technical-documentation/data-sheets/ADM660_8660.pdf

user37622: You do not need a DAC. In this 'regulation cases' PWM on digitalPin is used. See analogWrite Arduino function.
I use Grove MOSFET module to have PWM of desired voltage. The MCU generates a 3.3 V PWM. MOSFET module gets in my case 5 V as input voltage. You would use 10 V as Vin. MOSFET switches the 10 V line on and off at 'PWM speed' resulting in 10 V PWM.
As 10 V source you could use a 'boost' converter, to convert 5 V to 10 V.
This is the schema of the Grove MOSFET module:


49347: <p>I have an Arduino project where I am using an ESP8266 (Wemos D1 mini) powered via USB. I want/need to output an analog voltage from 0 to 10V.</p>

<p><strong>Goal:</strong><br>
A solution that is pre-made (eg a shield or sparkfun type module) or easy to build circuit that does not require a new power supply (besides the ones I have which is 3.3V and 5V, thanks to Wemos USB power).</p>

<p>Many devices allow you to control them using a 1-10V signal. I have two LED drivers at home that I would like to interface with: <a href="http://www.hidealite.se/Archive/FilesArchive/IM00259_JollyRound350_700mA_several_201706.pdf" rel="nofollow noreferrer">specs1</a>, <a href="http://www.hidealite.uk/Archive/FilesArchive/IM00128_MDR_45_60_sv_en_fi_201601.pdf" rel="nofollow noreferrer">specs2</a>.</p>

<p>What would be the easiest solution to generate a 1-10 Volt signal? Is there a module I can use?</p>

<p>I read about Op-amps but I don't yet have the knowledge to build one myself.
Another method is a DAC, but that seems to require a separate 10 Volt power supply.</p>
 49017: <p>The ADM660, link below, </p>

<blockquote>
  <p>is a charge-pump voltage converter that can be used to either invert the input supply voltage giving VOUT = -VIN or double it (ADM660 only) giving VOUT = 2 x VIN. </p>
</blockquote>

<p>It accepts an input range between 1.5V-7V so if you use the 5V from the Wemos USB power you'll be able to reach the desired 10V for your application, and it's cheap :)</p>

<p><a href="http://www.analog.com/media/en/technical-documentation/data-sheets/ADM660_8660.pdf" rel="nofollow noreferrer">http://www.analog.com/media/en/technical-documentation/data-sheets/ADM660_8660.pdf</a></p>
 37622: <p>You do not need a DAC. In this 'regulation cases' PWM on digitalPin is used. See <a href="https://www.arduino.cc/reference/en/language/functions/analog-io/analogwrite/" rel="nofollow noreferrer">analogWrite</a> Arduino function.</p>

<p>I use Grove MOSFET module to have PWM of desired voltage. The MCU generates a 3.3 V PWM. MOSFET module gets in my case 5 V as input voltage. You would use 10 V as Vin. MOSFET switches the 10 V line on and off at 'PWM speed' resulting in 10 V PWM.</p>

<p>As 10 V source you could use <a href="https://www.elecrow.com/boost-and-buck-voltage-converter-lm2577-lm2596-p-1254.html" rel="nofollow noreferrer">a 'boost' converter</a>, to convert 5 V to 10 V.</p>

<p>This is the schema of the Grove MOSFET module:</p>

<p><a href="https://i.stack.imgur.com/Fu9kQ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Fu9kQ.png" alt="enter image description here"></a></p>
