My first PCB Design. It will be used in my learn to solder classes at my local public library. Many thanks to Ralph Bacon for the great YouTube tutorials to get me started.
- Part 1 https://www.youtube.com/watch?v=wu2YcZDzzCY
- Part 2 https://www.youtube.com/watch?v=JdqQD-QMHfE
The circuit uses a 555 timer IC in astable mode creating a high / low pulse on the pin 3 output. Using this calculator...
Christmas tree ornament with (mostly) just a small number of through-hole components. Great for beginners. Might need a more experienced person to install the ATTiny841 and program it. There is an (optional) programming header to make in-circuit programming easy.
Unlike lots of other similar projects, the use of a micro-controller allows for smooth fading of the LEDs which makes for much more nat...
LM393 Low Power Dual Voltage Comparators DIP-8 test circuit.
Very inexpensive and a good way to learn about OpAmps. Needs 9 volts to operate.
Switch not in schema or PCB, added while building.
Zip file contains a short video of the circuit working.
Tested with DBL358, IR3F02, IR9082, IR94558, JRC4558D, NE5532, KIA393P, HA17393
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Some simple projects for beginners to try.
Featuring a basic discrete comparator circuit that is then used in a variety of projects including the EasyEDA ELECTRET_MIC_EE electret microphone and the LDREE, LDR (light dependent resistor, a.k.a photo resistor) symbols and their associated spice models.
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