Ghani Lawal- Soldered all of the SMD resistors and capacitors
- Soldered to LDO (U17)
- Soldered the solo op-amp IC (U18) - this gave me trouble even with reflow soldering, nearly ripped off a pad
- Soldered all of the power circuitry, -5V inverter regulator (U8) the 5V regulator (U9)
- U9 footprint has terminals REALLY close together
- The rocker switch isn't completely flush on the PCB
- Noticed in the schematic that I had the polarized 1uF cap (C55) oriented the wrong way, will correct this
- ISSUES:
- When I powered the circuit on and flipped the switch, I wasn't getting 9Vfrom the drain of the pnp mosfet
- I thought that maybe the reverse voltage polarity circuit (the mosfet being between the power source and the circuit) just wasn't working for whatever reason (this was a dumb thought-process) I bypassed it and removed the mosfet
- After I bypassed it I measured the output of the -5V inverter and regulator and 5V regulator, I was only getting about +1.1V, turns out the terminals for the 9V and ground of the -5V reg and inverter were short circuited, and both IC's were getting really hot
- I removed the -5V reg and inv, going the remove the 5V regulator since it is obviously broken as well
- Going to check for any more shorts in the circuit
- Need to by proper wire cutters
Solder Update
A project log for Music Spectrum and dB Visualizer
Receive input from a 3.5mm jack, divides the music into 7 frequency bands, shows the loudness of each frequency band in DB using LEDS.
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