Connollacken
New Member
Okay, perfect thanks
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Soldering to a magnet is very difficult or impossible. I suggest conductive glue or some sort of clamp. You could probably solder to a steel object and let the magnet attract that to the back face of the magnet.
That'd be sweet.and a small steel washer would be ideal to solder to, then let that attach itself to the magnet.
For each wedge, you could have:
The main wedge is the same as the others, except it has the charging socket exposed.
- To boost from 3.7V battery to 12V: **broken link removed**
- For the switch, you could use a touch switch, configured for toggle mode: **broken link removed** The output of this switch can connect to pin 4 (MT3608 enable pin) of the IC on the boost converter.
- To charge and protect the battery: https://www.ebay.com.au/itm/164271308971
The 5V from the charger can be passed through the magnets, provided you're using those with a conductive coating, i.e. Ni coated neodymium types.
If you want to have charging only enabled when all four are connected together, you could have three loops (via the magnets) around assembled lamp, where one loop is the 0V connection, one is 5V in, and one is 5V charge. The 5V and 5V charge loops are connected in the main wedge, such that the 5V in is only connected to the 5V charge loop when all wedges are connected.
The charging loop stuff (that only allows charging with all wedges connected is hopefully clear in the following drawing:Alright, I'm having a bit of difficulty with the charging in a loop. First of all, would this be series or parallel? Series seems to be the only way to get it to work, but I'm not sure. Would it be possible for you to sketch how this loop might work. Just a simple one if possible, thanks
The charger/battery/boost/switch/LED is in the "L" box in the above drawing, and should have the following stuff in it:Edit:
Charging them is one thing, but keeping the rest of the circuit attached to the individual batteries is what I'm really asking about (the boost converter, on/off switch and LED)
I'd second that.Personally, I'd try to get 1 working and go from there.
Yea I second that second. I have the 'L' working. Still needs a bit of tinkering, but the light turns on, which is instant satisfaction. I can see why this line of work/hobbie could be addictiveI'd second that.
Are you just using a normal mechanical switch?I had the switch after the boost converter though. Is that bad?
That was if you were using the touch-switch module. For a mechanical switch, just wire up as follows:What's the middle line between the switch and the boost converter that you've drawn there? And will I need to get a charging board per each wedge? I agree with taking baby steps, but the difficult part is getting them all to charge together.
Also, thanks again for the help and the drawings. Extremely appreciate it
By "solo loop" do you mean the uppermost one in the drawing?How is that 3rd loop (the solo loop) connected to each of the 'L's?