I have a MK2a heatbed that will be arriving soon. I want to use a couple of LED's on the bed but don't know what to go for. The MK2a on my Prusa Mendel that I built several years ago came with 2 rectangular LED's and resistor. I'd like to get a couple of rectangular LED's for the new bed because they sit neatly side by side. What I'm having trouble with choosing LED's is that a lot of them don't have a voltage rating. I've seen a few LED's with a Forward Voltage Minimum of around 1.6, but I don't know if they would be suitable. Could someone please point out what I should be looking for? https://reprap.org/forum/read.php?4,764910,764910#msg-764910 Tue, 19 May 2026 05:03:47 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?4,764910,765220#msg-765220 https://reprap.org/forum/read.php?4,764910,765220#msg-765220 backspace Reprappers Mon, 01 May 2017 04:17:48 -0400 https://reprap.org/forum/read.php?4,764910,765211#msg-765211 https://reprap.org/forum/read.php?4,764910,765211#msg-765211 Dust Reprappers Mon, 01 May 2017 03:21:56 -0400 https://reprap.org/forum/read.php?4,764910,765193#msg-765193 https://reprap.org/forum/read.php?4,764910,765193#msg-765193
[www.digikey.co.nz]]]> backspace Reprappers Mon, 01 May 2017 01:55:37 -0400 https://reprap.org/forum/read.php?4,764910,764914#msg-764914 https://reprap.org/forum/read.php?4,764910,764914#msg-764914 reprap.org]

2 x surface mount 1206 size on the MK2a or conventional through-hole LEDs. Install with opposite polarity so one or the other will light up regardless of the polarity of the power supply to the board.

1 x 1K ohm surface mount or through-hole resistor


The 1K resistor is the important part, limits how much current goes threw the led.]]> Dust Reprappers Sat, 29 Apr 2017 02:37:31 -0400 https://reprap.org/forum/read.php?4,764910,764910#msg-764910 https://reprap.org/forum/read.php?4,764910,764910#msg-764910 backspace Reprappers Sat, 29 Apr 2017 00:19:09 -0400