License

GPL 3.0

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iso_dimming_circuit

1 year ago 303
  • Description
  • Documents
  • BOM
  • Attachments
  • Members
  • Comments

Description

https://arduinodiy.wordpress.com/2015/07/25/1498/#comment-4851

copy from that site and added extra 3 more lamps to work on. 20180428_1856261.jpg

20180515_1822471.jpg

Documents

iso_dimming_shem

iso_dimming_pcb

BOM

None

Attachments

None

Members

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Comments (7)

jon123456 Reply

Hello, how did you solve the reverse state of PWM?

cheetahkid Reply

@jon123456 to reverse state is pretty simple, use code from arduino ide is using map, i.e. reversedpwm1 = map(pwm1,0,255,255,0); where pwm1 is your actual pwm and reversedpwm is the reversed state of pwm.

cheetahkid Reply

@jon123456  or change the state of the LED, i.e LED cathode connected to ground and anode is the input via a resistor, to reverse the state put anode to 5v and the cathode is the input via  resistor. Take your choice.

Duc An Reply

Hi, I make the same you but the R1, R2, R3, R4 (100k 2w) is so hot. Does your R1 hot too?

Duc An Reply

Ps: I use with 230VAC input

cheetahkid Reply

@rfid.viet yes, with the 2W resistor think max out with a little breeze 160C, that should be ok. Keep a gap between the resistors and the PCB. Temperture would increase more in a box. I have a look at other alternative like mini SMPS to reduce to 24V instead of 340V. although cost more.

cheetahkid Reply

@rfid.viet Yes, mine too is a 230VAC

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