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Blog PSU problem big

Warning: There is a problem in the PCB on the Simplecortex 1.2 in the power supply:

We got a Simplecortex from the latest revision in our mailbox a couple days ago and sadly enough there is a problem in the pinout of the Simplecortex as shown in the bottom picture:

problem

The current batch of 50 has this problem. If you got a Simplecortex that is revision 1.2 (White PCB with logo on the bottom, version number is on the box) this problem applies. Plugging in a shield will result in a shortcircuit between the GND and 3.3V! Using the external power supply will result in the high external voltage to be applied on the 3.3V pin of the shield! An external 5V power can be applied on the second USB connector if required. Most shields can be used with a small fix:

shieldpsu

Extenalpsu

The next batch will be the 1.3 revision and this problem will be fixed. If you have any questions or comments on this issue please send us an This email address is being protected from spambots. You need JavaScript enabled to view it.

 

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