Mini breadboard PSU

silviu — Thu, 24 Sep 2009 07:14:40 +0000

I bet this was discussed and sampled 1000 times before but here is the mini 5V PSU I use for my microcontroler breadboard projects. Usually you will use a 5 volt DC power supply for your microcontroller projects. Since I got tired of breadboarding the power source part all the time, I built a small PSU to power up my projects. I used a screw-in terminal for power input and I simply soldered pins that stick directly into the bread board for the output part.

I’ll follow up with pictures soon.

C1 should be at least 25V. C3 can be lower (16V, etc.) R1 should be adequate for the LED you choose at 5V – use an online led calculator for that. I sugest 480 – 1K for a red led.

You can power it up using a 9V battery or a small DC adapter depending on your projects need. If the consumption is high you’ll need to use a heatsink for the LM7805 regulator.

Have fun!

Quick and dirty way to breadboard a circuit

silviu — Thu, 17 Sep 2009 20:17:07 +0000

Since I didn’t want to pay for a kit of precut and bent wires for a breadboard and I am also lazy enough to put up trying a few ideeas because it involves cutting wires, I looked around and found an easy way to make connections on a breadboard: staples!

Just use a stapler so that it dispenses the staples without bending them or a cutter (watch the fingers) to obtain individual staples.

Since staples come in many sizes it’s easy to prepare a nice kit that should cut down on the number of wires hanging off your breadboard. Just make sure the staple is not too thick to damage your breadboard.

Have fun !

S.G. Vulcan » Circuits

Mini breadboard PSU

Quick and dirty way to breadboard a circuit