# Problem on a chaotic circuit.

by Lasha
Tags: chaotic, circuit
 Sci Advisor P: 4,032 Problem on a chaotic circuit. You can't tell if something is oscillating when you use a multimeter. You might get a reading on AC volts but these ranges are often pretty insensitive. So, you may have to wait until you get an Oscilloscope connected to it. Incidentally, you may be surprised how cheap oscilloscopes can get. Digital oscilloscopes from China have entered the market and that leaves a lot of unused, perfectly OK analog oscilloscopes available. There are also plenty of handheld oscilloscopes like this one: http://www.ebay.com.au/itm/Mini-ARM-...item33801dd01c I don't know if you would find $70 expensive or if the 1 MHz bandwidth would be a little too low in performance for you. In the meantime, I would really check those voltages and connections. I don't trust breadboards, so the time to find any problems is before you leave home. I saw a report that said those circuits were difficult to get going, so it will be interesting to see how you get on. P: 22  Quote by vk6kro You can't tell if something is oscillating when you use a multimeter. You might get a reading on AC volts but these ranges are often pretty insensitive. So, you may have to wait until you get an Oscilloscope connected to it. Incidentally, you may be surprised how cheap oscilloscopes can get. Digital oscilloscopes from China have entered the market and that leaves a lot of unused, perfectly OK analog oscilloscopes available. There are also plenty of handheld oscilloscopes like this one: http://www.ebay.com.au/itm/Mini-ARM-...item33801dd01c I don't know if you would find$70 expensive or if the 1 MHz bandwidth would be a little too low in performance for you. In the meantime, I would really check those voltages and connections. I don't trust breadboards, so the time to find any problems is before you leave home. I saw a report that said those circuits were difficult to get going, so it will be interesting to see how you get on.