Stand-alone Powermeter with a Thorlabs PM101 and Arduino

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Thorlabs PM101

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<html><body><h3>Connect your Arduino with a Thorlabs PM101</h3>In this project, a Thorlabs PM101 is connected to an Arduino via the serial interface so that you can read the measured values. As an application example, you can display the measured value on the Arduino and build your own handheld power meter. Step 1: Preparation The PM101 must be switched from RS232 operation with ±5 V to UART operation. <ol><li>Remove the bolts from the 15pin sub-d connector. </li><li>Remove the 4 TX9 screws in the sensor front panel. </li><li>Pull out the PCB. </li><li>Move both switches from PC RS232 Operation (default - both switches in upper position) to ± 5 V level UART (both switches in lower position) </li></ol>Detailed description of the switch to UART see: "Write your own application" chapter 2.1 <a href="https://www.thorlabs.com/_sd.cfm?fileName=MTN013681-D04.pdf&amp;partNumber=PM101R">https://www.thorlabs.com/_sd.cfm?fileName=MTN013681-D04.pdf&amp;partNumber=PM101R </a>Step 2: Installation Set the Arduino Uno supported baudrate for the PM101 using one of the possibilities: <ol><li>The function "Set Baudrate" of the TLPM driver </li><li>SCPI command "SYST:SEN:TRAN:BAUD" in the Thorlabs Instrument Communicator or in the Thorlabs OPM Terminal </li></ol>Step 3: Assemble the circuit Connect four pins of the Thorlabs PM101 to the Arduino Uno board following the diagram layout.png attached to the sketch <pre>| PM101 Pin | Arduino Uno Pin </pre><pre>| TxD | Pin 10 </pre><pre>| RxD | Pin 11 </pre><pre>| VxD | 5V </pre><pre>| GND | GND </pre><figure><img src="https://projects.arduinocontent.cc/fbb598ad-847e-4d61-af34-f2c2b0d14fb8.png"/><figcaption></figcaption></figure>Step 4: Load the code Upload the code contained in this sketch on to your board </body></html>

Stand-alone Powermeter with a Thorlabs PM101 and Arduino

This is an example how to connect a Thorlabs PM101 with an Arduino. Feel free to add a Display, Record function and all you need to handle the power measurement values.