Soldered R55, R54, R52 and R49, lost R59 when I opened the package
Soldered R40, R42, R43, R44, R45, R46, R47
Soldered R32, R33, R37, R38
Soldered R20, R23, R24, R25, R26, R27, R28, R21 got attached to the solder tip and ended up getting destroyed
**R40 and R33 both differed by their nominal value by over 10%... don't know if I was sent the wrong resistor or if I damaged the resistors as I was soldering them
New precision tweezers have arrived, soldering 0201 components has become a lot easier
Soldered R18, R31, R36, R51
Soldered R61, R63, R64
Soldered C15, C16, R73, R74,
R57
Soldered R2, R41, R50, R4,
R11, R12
C47, C48, C49, C52, C53, C57
and C58 are supposed to be 1uF, bought 100pF by mistake
U1 ground pin by C61 needs to
be soldered
'Cleanliness' of the solder
tip has a huge affect on ability to solder properly, if too much oxidation
(I'm assuming that's what this is) the solder won't adhere to the tip, may
need to buy the tip cleaner substance
Tweezers that I bought are ribbed, ended up losing on of the 1kohm 0201 resistors due to this, bought replacements that should arrive tomorrow
Successfully soldered R68, R69, R71, R72
Somehow destroyed the resistor I connector to the R70 pad, it measures as an open circuit
Instead of heating up the pad then touching it with solder (when trying to apply solder to the first pad) I would sometimes do the opposite when soldering 0201 devices, this lead to large solder balls being developed, my attempt to de-solder one of these balls let to one of the pads of R60 to be ripped out
Tried using hot air rework station with solder paste
Solder paste has a higher melting point than I thought, was using temperatures below 300 degrees Fahrenheit with little to know effect, cranked temperature to 370 degrees Fahrenheit, this was hot enough to melt the solder paste, the melting point is probably 350 degrees Fahrenheit
Seems like 0201 components are two small for this method to work, the video that showed the example of a hot air reflow station used components that were at least 0603 or 0805
Used 0.5mm solder and Needle/I-series Tips solder tip to solder 0201 capacitors, I have significantly improved my soldering abilities
The magnifying glass and lamp stand was a HUGE help
Soldered: C25-36
Need to buy replacements for C21, C22, C37, C38, C39, C40, C41, C42
Bought higher quality tweezers, mostly because I really need higher quality curved/angle tweezers
Des-soldered the first LM324
IC and re-soldered it in the correct orientation
Cleaned excess flux on the
board
Soldered U17, U18 and Q1
***Going to wait until I've
soldered every component and tested the board before I buy replacement for
C60 &C61 in case I damaged any of the components when I soldered them,
will buy replacements all at once
Ghani Lawal
