Bug #68: Pololu Ground problem on Rev 4 boards - LAOS Laser - LAOS - Laser Open Source

Actions

Copy link

Bug #68

closed

Pololu Ground problem on Rev 4 boards

Added by jaap almost 12 years ago. Updated over 10 years ago.

Status:

Closed

Priority:

High

Assignee:

jaap

Category:

Mainboard

Target version:

Laos Mainboard Rev4

Start date:

2013-01-05

Due date:

% Done:

Estimated time:

Description

There is a problem with (all?) Rev4 boards: GND on three of the 4 Pololu's is not connected to the main GND of the board. This is a severe problem and it can blow up your MBED or Pololu!

Still need to find out where in the production process this went wrong and if it applies to all Rev4 boards.

To check if your board has this problem, chek if there is connection between GND of the Pololu's X,Y and E and the GND of the power connector. If not, connect it, for example by making a bridge on the backside between the Pololu GND of the E-Axis and the GND pin of capacitor C3 (near the power connection).

Files

Download all files