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Project:Nanode/Building a Nanode: Difference between revisions
From London Hackspace Wiki
→Step 20
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==Step 20== | ==Step 20== | ||
Now we test the board to make sure that the 5V and 3V3 power supply rails are working OK. | Now we test the board to make sure that the 5V and 3V3 power supply rails are working OK. We do this before we insert any of the ICs (as more than 60% of the kit value is in the ICs). | ||
Put the positive probe on pin 14 of the 14 way IC socket and the negative probe on pin 7 of the same socket. | |||
Insert the FTDI cable with its black wire closest to the centre of the pcb. Look for a voltage close to 5.00V. | |||
To measure the 3V3, keep the black meter lead on pin 7 of the 14 pin socket and put the red meter probe on pin 28 of the far 28 pin socket as shown. Look for a voltage close to 3.3V | |||
[[File:test_5V.jpg|800px|center|thumb|Measure the 5V like this!]] | [[File:test_5V.jpg|800px|center|thumb|Measure the 5V like this!]] | ||
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[[File:testing_3V3_2.jpg|800px|center|thumb|Measure the 3V3 like this!]] | [[File:testing_3V3_2.jpg|800px|center|thumb|Measure the 3V3 like this!]] | ||
==Step 21== | ==Step 21== | ||
