Preparation

matrix_ctrlr_logo_nb

 

Preamble : prepare before acting

In order to assemble the kit you will need the following tools:electronic_tools1_description

  • soldering iron
  • solder wire
  • flat pliers
  • cutting pliers
  • a multimeter (voltmeter, ohm-meter, shorts)

 

 

Sort the componematrix_ctrlr_building_parts6nts on a tray, and compare them to the parts-list. Make sure you’ve got the right amount of parts!

 

It’s a good idea to work on a clean table. Placing components on a tray allows you to pause your work and come back to it later if necessary.

The kitchen is the perfect place to find containers for components.

matrix_ctrlr_building_parts16

You will solder components from the shortest to the tallest.

Notice that some components are polarized and need to be inserted in a certain way (respective of their positive and negative leads) while others are not and can be installed in either orientation. Non-polarized components like jacks or potentiometers need to be inserted correctly to work as expected by the firmware (follow the footprint).

unpolarized : resistors, small capacitors, trimmers, potentiometers, encoder, jacks, switches.

polarized : chemical capacitors, diodes, LEDs, ICs, DC barrel jack.

matrix_ctrlr_building_parts4

 

It’s now time to solder.

 

 

Recent Posts

arduino Mega pin tester application

A short application to test your arduino mega and detect if there are very thin short or cold solder joints between the pins/connectors. Useful if your buttons are not detected for example (we had a defective board with a short between pin 10 and 11, disabling SRIO function scanning the buttons).

Simply upload the sketch and then with a single wire you can monitor through Serial at 115200 bauds that the pin is good : pin 13 is the output pin alternating a state 1/0 while Serial indicates if the tested pin is working. All pins are tested so you can pass from one pin to another with the monitor window opened without rebooting, simply by moving the wire.

pin10 is tested on the picture below :

 

Increase the delay(5) to delay(150) to see the source output pin blinking. Sketch to download :

testeur_Mega_one_wire_v2

 

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