Read this if you can't get this working. The circuit that he explained must be a mistake. First of all, a 555 timer IC must have power to going into pin 8, that's its main power in. Second, pin 2 is the trigger signal. When the 10 μF capacitor discharges, it is supposed to discharge through the potentiometer into pin 7 and send a trigger signal into pin 2. By leaving pin 2 open, there is no trigger to generate output. To get this circuit working, use jumper wires to connect pin 8 to 4 and connect pin 2 to 6. Enjoy your fun square wave LFO! The frequency in Hz is given by 1.44/[(Ra + 2Rb)*C] where Ra is the 1.5 kΩ resistor, Rb is the potentiometer resistance, and C is the 10 μF capacitor. Download the xx555 manual from TI for more info, e.g. learn how to make this into a triangle wave. Cheers!
Read this if you can't get this working. The circuit that he explained must be a mistake. First of all, a 555 timer IC must have power to going into pin 8, that's its main power in. Second, pin 2 is the trigger signal. When the 10 μF capacitor discharges, it is supposed to discharge through the potentiometer into pin 7 and send a trigger signal into pin 2. By leaving pin 2 open, there is no trigger to generate output.
To get this circuit working, use jumper wires to connect pin 8 to 4 and connect pin 2 to 6. Enjoy your fun square wave LFO!
The frequency in Hz is given by 1.44/[(Ra + 2Rb)*C] where Ra is the 1.5 kΩ resistor, Rb is the potentiometer resistance, and C is the 10 μF capacitor. Download the xx555 manual from TI for more info, e.g. learn how to make this into a triangle wave. Cheers!
I see you there Moog, trying to make the video 5:55 long for the 555 IC. :)
Can this be used with the CV Expander?
very cool
Woot, years later lets time travel or do this!
tried many times, this mod, not working for me...
build this but didn't work. anyone had the same problem and solved it?
You need to connect pin 2 and pin 6. Additionally connect pin 4 and pin 8 (pin 8 is the VCC)
I have all of these things! But no Werkstatt.... ...