Hi
I am wanting to a make a Firefly Jar , I found the project on american site , I just wanted to know if anyone on here can help me with making it and sourcing the items info as follows .
This is the info from the web site , I will attach a drawing ! :
DESCRIPTION: I'm calling it the Firefly Jar since it looks like a jar of invisible flickering fireflies at night.
This project is a replacement lid for a mason jar. The PCB is 2.5 in diameter with a 55 mm round solar cell on top. This centers perfectly with a standard mason jar and lid collar. The solar cell recharges two 1.2V Ni-MH AAA batteries during the day. At night a P channel MOSFET switches on two candle flicker yellow LED's through a 2.1V LDO voltage regulator. The MOSFET only engages the LED's when the voltage on the solar cell is low and the batteries are above their 0.85V empty state. The LDO voltage regulator is an easy way to ensure a constant LED brightness throughout the life of the batteries.
This would make a good DIY kit since the part count is minimal and all components are through hole.
Cheers
spike
ps: have tried to attach a .pdf file with more info , but it seems I can not do that on this site ! .
http://hackaday.com/2016/01/07/simple-s ... ar-lights/
Firefly Jar
Re: Firefly Jar
Hello
The usual go to for components are Maplins and others on the net. Looking at the schematic, this is a simple project, but you may have to source some components from the States. If you don't want to make a PCB, I would expect that perforated board (0.1" grid perforations) would be an acceptable substitute. If you need help with the basics of making it, there are a number of excellent books listed on this site.
The usual go to for components are Maplins and others on the net. Looking at the schematic, this is a simple project, but you may have to source some components from the States. If you don't want to make a PCB, I would expect that perforated board (0.1" grid perforations) would be an acceptable substitute. If you need help with the basics of making it, there are a number of excellent books listed on this site.