Using a dynamic mic with a Macbook

Look anywhere on the web and you will be told you need an audio interface to connect your mic to your MacBook, or you need to switch to a USB mic.  Well, it ain’t necessarily so. Read more

Old car batteries as a power source

Testing Lead Acid’s   I have four old lead acid batteries stored in the garage. All of these batteries have been retired for some time but I keep them in the garage and charge them up every 3-6 months. This is the technique I used to measure the capacity of these batteries:- Charge the battery … Read more