I had visitors today and they left the studio looking nicer!
Went to the LCC to meet Ed. The whole building was ornamented and sprinkled with the final shows of every Ba course.
Got right to work! I watched mostly as Ed showed me how to hack the light bulb, the fan and the cebek recorder/player
Following these tutorials
Talked about Impendance – level of resistance in ohms.
Speakers – check resistance that the speakers give out to see if they are compatible with the cebek record / player !
Then we looked at the cebek voice recorder data sheet to check the output:
6 ohms speaker impendance gives you 2 watts of power.
Next doing the voltage divider : Two resistors + battery clip
And now the speakers ! cebek doesn’t work ! I have to retunr it and wait for another one!
Next The light bulb!
1- cut in half the mains cable
2- strip out 5 cms showing the 3 different wires
3 – connect the voltage dividir to the relay, transistor etc
More emails !!!
HI Ed !
Went to maplin and gor new transistors and resistors ( have been practicing my soldering ).
The transistors that I got are the QB73.
I soldered one in. E to motor, B to arduino digital pin 13, C to battery and nothing…It doesn’t work :S
Bought another fan, this one has a button. I wasn’t able to take it appart because the right size tool is at home… But maybe will give it a go at trying to connect this one?
The light bulb !
- I put on the new resistors from maplin. They don’t have the same colors but they assured me they were the same values > R1 = 560R and R2 = 1K.
So the diagram attached shows :
- Voltage dividor vout connects to Collector of transistor.
- R1 goes to ground in battery clip and they both go to the coil.
- R2 goes to 5v red wire on the battery clip
- Transistor : Emittor goes to coil
- Base goes to any digital arduino pin.
SO after all this i plugged the fan in the arduino and nothing happened…
I went to maplin and got new Transistors QB73 and replaced the other one because might have fried up. But still nothing happened.
Bought a new fan , this one with a button switch. How different will it be?
And now, 2 day break because I also work!
Go to Day 8 or Day 11