Solar Powered Wall Mounted Light

This is a minimalist functional wall mounted lamp. For me, it will purpose as a table lamp as it just above my table. Since the backside of my room has direct sunlight so i have made it to work with PV module. Ideally just mount it and forget it, no headache of charging. To on/off the light i have used my own latching circuit which i have better explained 'link here'. So, let's dive into it.

• Concrete mixture
• Led lights
• Lithium ion battery
• Lipo charging and protection module
• Uniformally cut wooden stick
• Push bottons x2
• Latching circuit (I made it here)
• 5V solar penal

and lastly soldering supplies, hot glue gun, a small metal chain to hang the light.

Mix the 1/1 ratio of cement and dust and pour water to make a paste consistency like mixture. For the mould take a water bottle with smaller neck (or any ref you like), and to make space in the middle to put electronics take a cardboard, roll it and wrap it in plastic film and add mould release (Vaseline for hack :) ). Hot glue both the plastic bottle to a base plate to seal it from bottom and also glue the cardboard with uniform space from all side and then pour the cement paste to it and let it to dry for two day and release the mould and let it dry for another two days.

For electronics we will use (this) circuit to turn it on/off. Only diff here is that have some soldered the circuit to a protyping board . The battery is connected to battery terminal of protection board and the output from board to connected to input circuit. Just keep the four push button's and battery charging terminals wires (total six) long enough to feed through the concrete casing and the chain with which the casing is going to hang.

Add the leds ground to protection module ground and positive to the Relay NO terminal.

To hang the lamp to wall we are going to use wooden frame. Make a L shape "thingy" with another centre to centre wood to give more strength. Add the circuit, battery and the led to the concrete case. Close the top of the case with a centre hole to add the hanging chain and pass wires through it.

Also make a base for solar penal to mount on the wall.

Mount the other end of the chain to the L shaped "thingy" and to mount the whole setup to the wall use screws or nails could also be used. All the wire are routed from back, four to the bottom for switches and for two power wires, I have soldered an old earphone wire and routed to the outside of the room there i gets connected to the PV module with a female 3.5mm aux connector. Place the solar penal such that most of the day its facing the sun importantly during peaks hours for better efficiency.

And boom, most probably you would have fully functional lamp with concrete touch.:)