Calcs and tyre pressure

Was thinking about buying a tyre pump for the car/land rover. This is because Sainsbury’s have started to charge at the tyre pump. Then I was thinking that those pumps they sell for car tyres are particularly rubbish and probably very very slow. It occurred to me that I could use a 240V pump to pressurise a cylinder to a high pressure then use this to inflate tyres.

So speaking with a friend who does scuba diving, there are cylinders available that are 3 litres and will carry that pressure. 

Soldered headers onto Uno board

Thought I’d have a go at soldering the headers onto a small knock off Arduino Uno board.

Attempt no. 1. Soldering is functional but does not look pretty.
Attempt number 2, one was not so good, but still functional.
Soldering, not bad given that the soldering iron is unlikely to be the right type. Far too big I would think.

LED Headlights comparison

I now suspect that the adjustment might be out. Though the pattern of the LED is far wider than the halogen as you can see. I am not sure that this can be adjusted away.

Tree down

We had a tree come down on Sunday night, one of three that used to stand on council property to the back of our house. Luckily it was the middle of the three that had been bend over by the other two away from our garden, so it fell onto pubic land.

The council kindly logged it, and i was able to help deliver it to a fella who lives in front of us.

Speedo drive

I have designed and had printed the body for my speedo drive:

The OneRender image of my OnShape model.
In ABS printed Parts
Assembled

We visiting Longleat where we met this fella;