Comments (4)
bdring
commented on June 12, 2024
Have you tried using those with 3.3v? The resistor is pretty high, so they might not light up. 5V will kill an ESP32
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thawkins
commented on June 12, 2024
I will have a play next week i have a couple of esp32, i can breadboard on 3.3v with these switches if i can hook one up to a gpio and see if i can read them with a 3.3v Vcc. I will also be able to see what the led briteness is like.
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bdring
commented on June 12, 2024
I have used these switches. They work fine for close on contact if you use the red and white wires. They will light up at 3.3V. The resistor appears to be 810R, but very hard to read.
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thawkins
commented on June 12, 2024
I have confirmed that these style endstop boards work fine at 3.3v, in fact i cant really tell the difference between 5v and 3.3v operation, the leds seem equaly bright.
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Related Issues (19)
- Only one motor per axis moving HOT 17
- Error notice: Fan ground pin.
- Questions/Issues re: homing HOT 9
- Probe usage issue HOT 1
- How is the spindle relay being activated? HOT 2
- [notanissue] is there a way to buy it in eu HOT 1
- which file to print pcb? HOT 9
- port of your schematic HOT 6
- Issue in BOM "BOM_MPCNC Vp1p2p2.xlsx"
- PWM Voltage Drop
- more flexible support for stepstick modules HOT 33
- Connection stop button
- New Controller Revision
- Non-MPCNC use HOT 6
- Dual endstops per axis? HOT 1
- A-Axis Configuration HOT 1
- Joint use of a relay and a PWM laser HOT 5
- Fan pin - faulty ground pin HOT 6
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