It’s important to note that we included this as a feature and as such we ensured that not only is the ‘hack’ very easy to do, it is also easy to reverse. Also, the ‘hack’ disables the onboard ZIP LEDs, reversing the ‘hack’ re-enables the ZIP LEDs again. Both the ZIP LEDs and the servos are controlled from outputs on the microbit. The Servo:Lite board only breaks out P0, P1 and P2 to drive things. So, if we want three servos we need to disable the ZIP LEDs.

As you can see in the above image, the ‘hack’ is a simple three step process;

1. Create a soldered joint across the two pads on the front of the board. 2. Break the track between the two pads on the rear of the board. 3. Add 3 x 0.1” header pins to the board for the extra servo to connect to. The top pad will then link to the signal pin, the middle to the positive and bottom to the ground of the servo. To return a ‘hacked’ board back to its original state just reverse the process;

• Remove the soldered joint on the front of the board.
• Create a soldered joint across the two pads on the rear of the board.

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