ASSEMBLY

SOLDERING

Here is an overview of where and on which side each component needs to be soldered.
overview

GENERAL

DIODES

The diodes needs to be soldered on the top of the PCB. Pay attention to their orientation: They have a small line on one side, which should be on the side the arrow on the PCB is facing to.
diodes


Apply a small amount of solder on one pad. diode_01


Then use tweezers to place the diode on the pads and reheat the solder to secure the diode. diode_02

Now you can add solder to the second pad.

HOTSWAP SOCKETS

Here you can apply the same technique as used for the diodes: Apply some solder on one of the pads first. hotswap_01


Then place the switch socket in the silk screen markings. The orientation matters here too. Especially if you plan on using the case. socket_dark hotswap_02


Than reheat the solder. Apply some pressure with a pair of tweezers to make sure the socket is fully seated. hotswap_03

Now you can add solder to the second pad.

RESET BUTTON

Insert the button into the top of the PCB. reset_01


We placed the fooprint a bit more towards the edge, than it’s meant to be, to integrate it better into the case. Therefore the tiny stabilizer on the bottom of the switch doesn’t touch the PCB anymore. Make sure it aligns with the PCB vertically, so it’s oriented correctly. reset_02


Then solder the four pins on the bottom to the PCB. reset_03

MICROCONTROLLER


Place the microcontroller in it’s place. Apply some flux and try to hold the iron in an angle where you touch the pads of the microcontroller and the PCB, while adding solder. MCU_01


The pads on the back are a bit fiddly to solder, so you should add a lot of flux to the pads on the microcontroller first. Then apply the same technique as on the front: Try to touch the pads on the microcontroller and the PCB before adding solder. MCU_02

WIRED

You will only need to solder these parts, when building the wired version of the TOTEM.

TRRS JACKS

Install the TRRS jack on the bottom side of the PCB. The place where you should insert it is marked with a white line. trrs_01


You may want to use some masking or kapton tape to hold it in place, since you need to solder it on the bottom. trrs_02


Then solder the pins on the bottom to the PCB. trrs_03


Once you are done with the parts for the wired version you can skip to here to continue.

BLUETOOTH

You will only need to solder these parts, when building the wired version of the TOTEM.

POWER SWITCH

Apply a tiny bit of solder on the bigger, outer pads on top of the PCB. power_01


The power switch has some tiny knobs on its bottom, which fits into the PCB holes. Hold it in place with tweezers and than reheat the solder on the pad. After this you can solder the other pad and the three pins. power_02

BATTERY


You probably need to shorten the cables and tin them, since the length needs to be pretty short, to fit. battery_01


You can see which cable needs to go in which eye by the silkscreen below the eyes. Red is + / Black is -. batt_face


Attach the wires of the battery to the pads and solder them in. it_stings


Once you are done with the parts for the bluetooth version you can skip to here to continue.

CLEANING

When you are done soldering, you should clean your PCB with isopropanol or PCB cleaner to make it look nice again.

CASE


First install the standoffs from below into the top of the case. case_top_standoffs


Next screw them in from above. case_top_screws


Now insert the board into the top and put in your switches. Be sure to support the hotswap sockets from below! switches


Put in your rubber feet into the designated spots in the bottom piece. case_bottom_bump


You can than attach the bottom to the case and screw it in. case_bottom_screws

FINAL BUILD

When you buy the Kit through KeebSuppy, the TOTEM comes preflashed with a VIAL config. The keyboard should pop right up, when plugging it in.

This is how the final keyboard will probably look like. final

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