Assemble Talko_1.1

How to assemble talko 1.1

Talko 1.2 assembly page is located here https://github.com/deladriere/euro-modules/wiki/Assemble-Talko

Extras

Thonkiconn’ – 3.5mm Jack Sockets (x50) : Jacks connectors

Alternative 7segment Fischer Electronic receptacle : receptacle

Thonk potentiometer Alpha 9 mm Pots
Thonk Davies 1900h Clone Knob Davies 1900h

Populate PCB

THT side

Fix missing via

There is a missing +5V via that need to be fixed.
Add a little wire to connect these two vias :

Apply solder from the SMD side

SMD side

Add connectors

Start by adding the 3 connectors on the SMD side
The power jumper is not necessary unless you want to take the module on the road or debug it before installing in the rack (I find useful to check the 7 segment led before soldering the other components)

THT side

Prepare the 7 segments display

You need to solder all the 10 pins to the header to have it staying in place.
Do this before soldering on the pcb.

⚠️ Please note that the 7 segments display random information until the proper software is loaded. This is a normal behavior because no level has been set yet by the micro-controller and all entries of the BCD decoder are floating undefined.

Adding the pots

First remove the little nubs on each pots (to have the panel flush with the 7 segments display)

Cut/remove the foot on 2 pots (to avoid power shortcut via the panel's ground)

Place the pots in place

Notice the 2 pots without their foot

Place the panel

Add the component but don't solder them yet

Add the panel and hold it in place with some rubber band and adjust the position before soldering

Center and fix element in place (I use a pair of plastic pliers to avoid scratching the panel)

Add the cap and you are done.

⚠️ Please note that the caps are really hard to get in place and need a firm press. I use a droplet of oil to help them fitting in.

Testing

You can use the USB power to test the module by placing the jumper in place

⚠️ You will need to remove it prior installing the module in the your modular case to allow resetting / declaring the USB port to the computer each time you plug it.
If you leave it in place, you will have to switch your modular's power off and on to allow connecting the USB.