Hi
@stardustsailor, Thanks for posting. Just reread your post and got more curious.
So, to grossly oversimplify, do you think that the V-tower uses the exact same PCB minus say a few more chips and the pin out to the fan? OR do you think they might print a different PCB? I will keep in mind the years and upgrades of both units. Perhaps even soldering off certain gateways?
Well,I bought my V-Tower before a month or so ...
And it's actually the latest version ( Red colored PCB ) .
Yes,it seems that latest versions of both Extreme Q AND V-Tower ,
share the same microcontroller board .It makes sense .Decreased manufacturing cost.
Take a look :
You can see -at top left of the pic- where the green arrows are pointing ,the blank pads "J2" & "Q1" where a connectorand a transistor are missing ,respectively .
Also around there ,some other parts are missing too
(R6 :Transistor's base resistor & D4 : Protection diode against induction current spikes from fan motor ).
Those are for the fan speed contol .
At bottom of the pic ,the blue colored arrows are pointing to the blue leds' pads (Extreme Q ambient lighting ) .At V-Tower ,those blue leds are missing too,along with their current limiting resistors ( R17,R18,R19 ).
The various ICs :
#1 : MCU
#2 : EEPROM
#3 : Peak Boost/Buck/Inverting DC/DC Switching Regulator (
MC34063 )
#4 : SMPS HEXFET Power MOSFET (
F7470 )
#5 : P-Channel HEXFET Power MOSFET (
F7240 ) = Ceramic Heater PWM switching
#6 : Precision Operational Amplifier (
OP07C )
#7 : CMOS Voltage Converter (
HF 7660 )
#8 : Voltage Regulator (
7805 )
Wait hold up,
@stardustsailor did you change the colour output of your unit??? If so what did you replace, I don't mind the blue LED but if I can have green well, sign me up lol!
The V-Tower has a BLUE led for "POWER" optical signal.
But it's light output is so high ,that when vaping with the room lights dimmed down
-or at dark-,becomes pretty annoying ,maybe even frustrating for some ...
The "TIMER" has a GREEN led.Much more "kind" with human vision ...
So I just swapped their places ...