ea-ps_2084-03b
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| ea-ps_2084-03b [2015/06/03 21:35] – experiments kingkevin | ea-ps_2084-03b [2015/06/07 17:46] – add connection table kingkevin | ||
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| ==== connection ==== | ==== connection ==== | ||
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| + | === UT-D02 === | ||
| The DMM comes with an RS232 [[http:// | The DMM comes with an RS232 [[http:// | ||
| Line 78: | Line 80: | ||
| * RS232 signals are inverted compared to UART. This was solved by inverting the signal using an NPN transistor and two resistors. | * RS232 signals are inverted compared to UART. This was solved by inverting the signal using an NPN transistor and two resistors. | ||
| - | More details about the cable and modification is described in this picture: | + | ^ UT-D02 wire ^ CP2102 UART signal ^ PNP ^ |
| + | | green | GND | | | ||
| + | | yellow | GND | | | ||
| + | | orange | 5V | | | ||
| + | | | GND | E | | ||
| + | | | 5V + 10kΩ | C | | ||
| + | | brown + 10kΩ | | B | | ||
| + | | | RX | C | | ||
| + | |||
| + | === UT-D04 === | ||
| For the second multimeter I used a [[http:// | For the second multimeter I used a [[http:// | ||
ea-ps_2084-03b.txt · Last modified: 2024/01/07 17:49 by 127.0.0.1