So, last night I did some meaurements. Room temperature at 18 °C. LM7805 goes as high as 52°C with 13.8V at power feed. Temperature drops to 49°C when at 12.8 V (that is the votage of a fully charged

That is a linear voltage regulator (7805). How hot is hot? Can you keep your finger on it? The temperature increases with the voltage applied. I use mine at 13.8V power source voltage and is warm, not

I found this shop very reliable. http://stores.ebay.com/Tayda2009/Wafer-Housing-Crimp-2-54mm-/_i.html?_fsub=2849870016&_sid=872591586&_trksid=p4634.c0.m322 or http://www.taydaelectronics.com/connector

Try this site: http://www.ebay.ca/sch/i.html?_from=R40&_trksid=p2050601.m570.l1313.TR12.TRC2.A0.H0.X4+mm+knob.TRS0&_nkw=4+mm+knob&_sacat=0 Ion VA3NOI

LM386 can output at most 1W. Your speaker should have at least that power capability. I use a 1.5W/8Ohms speaker from an old portable radio. Ion VA3NOI

Hi Greg! C107 is RF grounding the balanced modulator, so you need it. It is a 100nF/25V or 50V X7R capacitor. If you do not have an SMT part you can solder a regular ceramic cap on the pads. Probably

Hi Bob! A mini USB cable is what you need, Your Arduino Nano already has a bootloader flashed. You will need a USB to RS232 converter only if you want to flash a bootloader on a new Atmega processor,

It is the red one, A2 on Arduino.

Hi Sara, On my package the value was showing $59 (USD). Customs fees depend on your country laws. In Canada I did not have to pay. Packet is sent using India Post. Best of luck, Ion VA3NOI

Hi Kevin! I was in your shoes. I placed the order on Dec. 24 and I have received, from Paypal, an email on Dec. 30 with information about shipping, once those were updated by HF Signals. For me it too

Saying Hello to everybody here and creating my first post at the same time!