Making a battery box for my Celestron telescope

Background I have a Celestron NexStar SLT 127 telescope. For those who don’t know, it’s a battery-powered telescope which has a small computer to navigate around the skies and steer the telescope. It’s quite hungry for power – the telescope takes 8 AA batteries. Depending on the type of batteries you use and the temperature,Continue reading “Making a battery box for my Celestron telescope”

Building a bottle battery

If you read my blog, you’ll have seen my recent review of my RSP Asteri 2 bike lights. I talked about making a bottle battery, and now I have. Unfortunately I forgot to take photos after the first couple of steps but never mind. What you’ll need I used the following parts, but you canContinue reading “Building a bottle battery”