# Led lighting
**URL:** https://forum.core-electronics.com.au/t/led-lighting/16885
**Category:** Uncategorized
**Created:** [20 April 2023 05:51 UTC](https://forum.core-electronics.com.au/t/led-lighting/16885 "2023-04-20T05:51:27Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@Gerry219541](https://forum.core-electronics.com.au/u/Gerry219541)
#### Post date: [20 April 2023 05:51 UTC](https://forum.core-electronics.com.au/t/led-lighting/16885/1 "2023-04-20T05:51:27Z")
New to electronics, could someone show me how to solder these two pieces together which wire goes to which terminal Thanks
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### Author:  [@Jeff105671](https://forum.core-electronics.com.au/u/Jeff105671)
#### Post date: [20 April 2023 06:32 UTC](https://forum.core-electronics.com.au/t/led-lighting/16885/2 "2023-04-20T06:32:05Z")
You are still missing a few components.
To drive the LED light you need a constant current supply of ~250mA, such as the [APC-B-250](https://www.digikey.com.au/en/products/detail/mean-well-usa-inc./APC-8-250/7702581). To power that supply you need a small 24V adapter, such as [24V DC 2A Appliance Power Supply Adapter | Core Electronics Australia](https://core-electronics.com.au/24v-dc-2a-appliance-power-supply-adapter.html)
To drive it from that switch you will need a control module such as [MOSFET Module (Screw terminals) | Core Electronics Australia](https://core-electronics.com.au/mosfet-module-screw-terminals.html) or a relay module such as [Relay Module V2 (Arduino Compatible) | DFRobot DFR0017 | Core Electronics Australia (core-electronics.com.au)](https://core-electronics.com.au/relay-module-v2-arduino-compatible.html)
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### Author:  [@James](https://forum.core-electronics.com.au/u/James)
#### Post date: [20 April 2023 06:42 UTC](https://forum.core-electronics.com.au/t/led-lighting/16885/3 "2023-04-20T06:42:24Z")
Hi Gerry,
Could you share any details about where you got that LED module from? That decides how you have to power it, though you’ll likely be using a constant current module like Jeff suggested:
> **[FemtoBuck LED Driver](https://core-electronics.com.au/femtobuck-led-driver-32985.html)**
>
> This is the FemtoBuck, a small-size single-output constant current LED driver. Each FemtoBuck has the capability to dim a single high-power channel of LEDs from 0-350mA at up to 36V while the dimming control can be either accessed via PWM or analog...
We’ll be able to offer more advice once we’ve got the whole picture
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### Author:  [@Gerry219541](https://forum.core-electronics.com.au/u/Gerry219541)
#### Post date: [20 April 2023 07:04 UTC](https://forum.core-electronics.com.au/t/led-lighting/16885/4 "2023-04-20T07:04:24Z")
Hi Jeff,
Thanks for the quick response… I thought all I had to do was add one section to the other and add a bud battery ???
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### Author:  [@Robert93820](https://forum.core-electronics.com.au/u/Robert93820)
#### Post date: [20 April 2023 07:11 UTC](https://forum.core-electronics.com.au/t/led-lighting/16885/5 "2023-04-20T07:11:02Z")
oops!!!
cheers Bob
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### Author:  [@Jeff105671](https://forum.core-electronics.com.au/u/Jeff105671)
#### Post date: [20 April 2023 22:07 UTC](https://forum.core-electronics.com.au/t/led-lighting/16885/6 "2023-04-20T22:07:52Z")
The :LED you have selected is a 3W model designed to operate at 250mA. For that size LED the best way to power it is with a constant current supply. A simple resistor arrangement works OK for one or two LEDs, but not for several high-power devices. The controller adjusts the voltage depending on the characteristics of the LEDs to ensure that the current stays at 250mA, and for a 3W array that would be in the vicinity of 12V. The controller might be an integrated device for connecting direct to the AC or it might consist of a controller module combined with either a battery or AC adapter. You could turn the LEDs on and off with a simple SPST switch. To control it from a MCU you could select a controller that supports an interface to the MCU, or you could switch the controller output using the relay or MOSFET modules I linked. It all depends on how you want to use that LED.