projects:portable-led-bar
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projects:portable-led-bar [2021/03/21 17:09] – lepi | projects:portable-led-bar [2021/03/21 20:57] (current) – lepi | ||
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| status=active | | status=active | ||
| founder=[[user> | | founder=[[user> | ||
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}} | }} | ||
+ | \\ \\ | ||
+ | === DISCLAIMER: === | ||
+ | === This is not yet a finished project intended as instructions but only a means to share progress on the project. === | ||
+ | === This might be dangerous to attempt !!! === | ||
+ | === If you attempt to follow any of this, you do it at your own risk. === | ||
+ | \\ \\ | ||
=== Adapting a mains AC led bar to work with a battery of 18650s === | === Adapting a mains AC led bar to work with a battery of 18650s === | ||
by [[people: | by [[people: | ||
+ | \\ | ||
+ | {{: | ||
+ | \\ \\ | ||
+ | {{: | ||
- | == Intro == | + | \\ \\ |
+ | KiCAD files: | ||
+ | [[https:// | ||
+ | |||
+ | Revision 0.1\\ | ||
+ | {{: | ||
+ | |||
+ | \\ \\ | ||
+ | === Intro === | ||
The purpose of this project is to adapt a 220AC UV LED-Bar to work with 18650 cells. | The purpose of this project is to adapt a 220AC UV LED-Bar to work with 18650 cells. | ||
+ | \\ \\ | ||
I have just started learning electronics, | I have just started learning electronics, | ||
- | + | \\ \\ \\ | |
- | = Specifications = | + | == Specifications == |
The LED Bar - Light4Me LED UV 8 | The LED Bar - Light4Me LED UV 8 | ||
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|TA: |60 °C | | | |TA: |60 °C | | | ||
|TC: |80 °C | | | |TC: |80 °C | | | ||
- | + | \\ | |
- | Cells | + | 18650 Cells |
^Characteristic | ^Characteristic | ||
|Datasheet: | |Datasheet: | ||
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|Diameter: | |Diameter: | ||
|Length: | |Length: | ||
+ | \\ | ||
Battery charger - Tangspower TP-L8S20 Li-ion charger | Battery charger - Tangspower TP-L8S20 Li-ion charger | ||
^Characteristic | ^Characteristic | ||
|Maximum Voltage: | |Maximum Voltage: | ||
|Charging Current: | |Charging Current: | ||
+ | \\ \\ \\ | ||
=== The Story === | === The Story === | ||
- | + | \\ | |
- | == Revision 0.1 == | + | === Revision 0.1 === |
A friend of mine performs POI with POI-tails that are neon-yellow. The thing is made to shine in UV light. | A friend of mine performs POI with POI-tails that are neon-yellow. The thing is made to shine in UV light. | ||
- | Some AC mains LED bars I have, revealed a lot of space inside the casing profile - more than enough to house 8 18650 cells. | + | Some AC mains LED bars I have, revealed a lot of space inside the casing profile - more than enough to house 8 18650 cells. |
The LEDs have a " | The LEDs have a " | ||
- | | + | \\ \\ |
Remembering next-to-nothing about Electrical Circuits, I started designing a circuit, that would: | Remembering next-to-nothing about Electrical Circuits, I started designing a circuit, that would: | ||
- Power the LEDs from cells | - Power the LEDs from cells | ||
- Allow charging the cells without taking them out | - Allow charging the cells without taking them out | ||
- If possible leave the original charger with mains connection | - If possible leave the original charger with mains connection | ||
+ | \\ \\ | ||
First I considered two solutions: | First I considered two solutions: | ||
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- Operating voltage would have to be 26.9 V (3.36 V / LED) | - Operating voltage would have to be 26.9 V (3.36 V / LED) | ||
- Charging | - Charging | ||
- | + | \\ \\ | |
- | Parallel... | + | == Parallel... |
- I have a TP4056 03962A Lithium Battery Charger with protection module | - I have a TP4056 03962A Lithium Battery Charger with protection module | ||
- [[03962A description]](https:// | - [[03962A description]](https:// | ||
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- Initially I thought that would be crazy to put 8 of these inside | - Initially I thought that would be crazy to put 8 of these inside | ||
- Also wiring LEDs in parallel would if I understand correctly require to put at least 40 cm * 8 = 3.2 m of thick wire - that might be difficult. | - Also wiring LEDs in parallel would if I understand correctly require to put at least 40 cm * 8 = 3.2 m of thick wire - that might be difficult. | ||
- | | + | \\ \\ |
- | In-series... | + | == In-series... |
- A friend informed me to the fact, that I could use an external 33.6V charger which seemed to be easier. | - A friend informed me to the fact, that I could use an external 33.6V charger which seemed to be easier. | ||
- And also that I could use LM317 to regulate current out of the cells to LED's | - And also that I could use LM317 to regulate current out of the cells to LED's | ||
- I decided to use a I/0/II switch and an IEC cord socket with the original LED driver if possible. | - I decided to use a I/0/II switch and an IEC cord socket with the original LED driver if possible. | ||
+ | \\ \\ | ||
Emeryth suggested: | Emeryth suggested: | ||
- to learn more about li-ion cells before I use un-protected or multiple cells | - to learn more about li-ion cells before I use un-protected or multiple cells | ||
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- to use a DC-DC converter instead of LM317 that produces too much heat | - to use a DC-DC converter instead of LM317 that produces too much heat | ||
- to rethink if I need all LEDs in-series | - to rethink if I need all LEDs in-series | ||
- | + | \\ \\ | |
- | Next Steps: | + | === Next Steps: |
- | - Research Emeryth' | + | - Research Emeryth' |
- Find a solution to connecting the cells | - Find a solution to connecting the cells | ||
- decide whether to solder the cells (dangerous, potentially capacity hindering) | - decide whether to solder the cells (dangerous, potentially capacity hindering) | ||
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- design a 3d-printed casing for the cells with springs, that would slide into the LED bar casing | - design a 3d-printed casing for the cells with springs, that would slide into the LED bar casing | ||
- remember to discharge cells before in case of soldering | - remember to discharge cells before in case of soldering | ||
- | + | \\ \\ | |
- | Notes: | + | Notes:\\ |
- | - https:// | + | - https:// |
- https:// | - https:// | ||
projects/portable-led-bar.1616346545.txt.gz · Last modified: 2021/03/21 17:09 by lepi