User Tools

Site Tools



This shows you the differences between two versions of the page.

Link to this comparison view

x0x:testing [2016/01/28 18:05]
x0x:testing [2016/01/28 18:05] (current)
Line 1: Line 1:
 +===== Testing and troubleshooting the x0xb0x =====
 +==== What you need for testing ====
 +The bare minimum that you will need to test your x0xb0x is:
 +  - a multimeter (digital works best)
 +  - 2 Double A batteries
 +  - aligator clips
 +  - High impedance (cheap) headphones
 +These items are nice to have when testing:
 +  - A multimeter with frequency detection, and 3 decimal places
 +  - A benchtop power supply capable of generating 2 Volts, 3 Volts and 12 Volts
 +These items are good for testing, but pricey:
 +  - Oscilloscope
 +==== Troubleshooting,​ a basic guide. ====
 +So you have soldered your x0xb0x and it doesn'​t work, now what?
 +  - Eliminate the obvious. ​ Is it plugged in? Are all your chips properly seated in the sockets?
 +  - Check the polarity of the components. ​ Is everything properly soldered? ​ Check it agian. ​ Remember: ​ Electrolytic and Tantalum Caps, diodes, LEDs, transistors,​ and ICs all have polarity.
 +  - make sure there are no little bits of metal (espeically clipped leads) shorting out any connections. ​ Also check through the resistors around the VCO and the sequencer. ​ Some of them get pretty tight.
 +  - Perform the last test that you knew worked. ​ Does it still work?
 +  - If you are having problems with the VCF, read through the VoltageControlledFilter section and get an idea of what it is doing. ​ This will help you with troubleshooting imensely. ​ Also, check out the relavent testing section for extra troubleshooting tips.
/home/ladyada/public_html/wiki/data/pages/x0x/testing.txt · Last modified: 2016/01/28 18:05 (external edit)