Reddit:Electronics

This is the result of a 3% solution of Alconox and tap water for 20 min. at 40°C in an ultrasonic bath and it took this PCBA from trashed to clean. Second step was in 70% IPA and exercise buttons repeatedly, then blow dry and under a heat lamp. Note to others - take the battery out ASAP to minimize damage should your device take a caustic dip. This is a smart key that went for drink and sat for two weeks. The only thing on the other side is the battery holder.

Need some advice from the electronics nerds

I’ve run in to a few problems with my solar festoon lights I’m having built to hopefully bring them to market in the next month or 2.

The main one is losing brightness from the first light a 1 metre (40 lumens) then it drops to about 10 lumens at 20 metres.

It’s running at 3.2 volts. My solar panel is 6 volts 6 watts.

Is it an option I get my manufacturer to get the lights to run at 6 volts too? Or any other options like maybe increasing output current?

All advice welcome

Got the design from the MERCIA website.

If you are ever in a pinch you can use a PoE splitter. I was doing some soldering work in the shop with the pinecil soldering iron and found a PoE splitter in a bin.

This is a machine I designed to laser etch pcb’s. I’ve made it so it can do double sided and be easy to align everything when mounting the blanks on the machine. the parts cost of 120 euros, maybe it’s worth making a kit of. I put a few pictures of the results that came from my previous design. I will upload the results of this machine after my uni exams.