maemo.org - Talk - BreadboardTOH

https://dl.dropbox.com/s/x19ave93dzi...2012.10.57.jpg

For all your crazy TOH experiments!!
Want one? Order here!

TUTORIAL

Package containing
https://dl.dropbox.com/s/v5a35mv35on...2015.49.01.jpg
https://dl.dropbox.com/s/gs63j0k8dyg...2015.48.27.jpg
1x Casing
1x Half-size solderless breadboard
1x PCB
1x SMD components containing
- Resistors
- Capacitors
- LDO voltage regulator
- EEPROM
- I2C level-converter
- 2x5 header

PREPARATIONS
- download i2ctool from the store
- get a solder iron and some solder
- flux and solderwick also very nice to have
- tweezers
- you'll also need pliers

CHECKING
Press the PCB in the casing
https://dl.dropbox.com/s/rv4q974jx2f...2015.49.29.jpg
Turn on Vdd using i2ctool and measure like this
https://dl.dropbox.com/s/14kjjqdvqfh...2015.50.52.jpg
The connections per hole are indicated on the casing (how incredibly practical!)
3V3 -> about 3.3V
SCL_1V8 -> anything above 1.5V
INT_1V8 -> anything above 1.5V
SDA_1V8 -> select 'probe' and then check, fluctuates a bit. if all others are good, this will also be fine.
GND -> short to usb port
Rest -> nothing

SOLDERING
Use as little solder as possible. The level-converter and eeprom have a round indicator on top, matching an indicator on the board, make sure they are the right way around! Remove access by applying a bit of flux and taking the solder off with some solderwick.
These guys make some nice instructional videos on soldering if this is new terrain for you.

EEPROM with indicator indicated
https://dl.dropbox.com/s/zbgv7yavsiw...2021.24.56.jpg
I2C level converter with indicator indicated
https://dl.dropbox.com/s/jrwkhkmox7p...2021.24.17.jpg
Resistors, capacitors and voltage regulator
https://dl.dropbox.com/s/b4qvz8ec2lz...2021.20.45.jpg

Next, use your plier to cut off about 1mm from all of the legs of the header, like this:
https://dl.dropbox.com/s/1fp7dnytkxw...2016.14.17.jpg
Then put the pcb in the casing (might need a bit of pushing/rework on some casings) and insert the header from above. The pins are allowed to extend up to 1mm from the board, but definitely not more! Then solder them!
https://dl.dropbox.com/s/5cpllh3xad1...2012.03.50.jpg

Fiew, okay the hard part is over!

BREADBOARD
Cut off the extending pins, otherwise it will not fit. Squeeze it in the casing.
https://dl.dropbox.com/s/448ib8mammm...2012.06.34.jpg

SOFTWARE
Open the terminal, type 'devel-su' followed by your pw. Next type 'harbour-i2ctool', the program is now opened in root.
Enable Vdd and go to TOH EEPROM. A long list of settings and a lot of FFFF's should be on your screen.
https://dl.dropbox.com/s/10xqfjgds2x...2012.00.59.jpg

If not, something went wrong with your soldering. Check your board, clean it and adjust soldering with flux and solderwick untill it works.

Change settings to match this:
https://dl.dropbox.com/s/ya9v0xkb4fs...2009.02.11.jpg

DONE
http://media.giphy.com/media/6HOkD1pSCne4E/giphy.gif

Go make something Funky now!