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Homeroasters - Home Roasting Coffee Community » DATALOGGERS - CONTROLLERS - RATE OF RISE METERS » Dataloggers/Controllers/Rate of Rise Meters

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Power but No Power???
CharcoalRoaster	#1 Posted on 09/21/2020 10:42 AM
Pounder Posts: 599 Location: Chattanooga, TN Joined: April 13, 2012	I'm still fighting with the wiring to my new roaster specifically to the Arduino/TC4/ZCD/LCD. I have everything wired up and there is power getting to the boards and the LCD as determined by a voltage detector but none of the Power LEDs are illuminated on either the Arduino, TC4 or ZCD and the LCD isn't showing anything. Photos show the components when supplied with power and voltage detector registers the presence of current. Small electronics are not my forte so please excuse the wiring spaghetti. If you want to see clean wiring visit CK lol CharcoalRoaster attached the following images: Edited by CharcoalRoaster on 09/21/2020 10:47 AM


renatoa	#2 Posted on 09/21/2020 12:15 PM
Administrator Posts: 1673 Location: Joined: September 30, 2016	No Vcc power pin fitted on the dimmer board ? Then how is powered its ATTINY processor ? Edited by renatoa on 09/21/2020 3:18 PM


CharcoalRoaster	#3 Posted on 09/21/2020 12:48 PM
Pounder Posts: 599 Location: Chattanooga, TN Joined: April 13, 2012	I thought the power to the ZCD came in through the AC INPUT?


mg512	#4 Posted on 09/21/2020 1:58 PM
1/4 Pounder Posts: 177 Location: Joined: March 04, 2018	No, you need to supply power to the low-voltage digital part of the dimmer board, from the Arduino / TC4. Just run an extra wire from 5V on the TC4 to VCC on the dimmer board. (I would really not refer to it as a ZCD, it will confuse people!) That doesn't explain why the Arduino power LED isn't on though. How are you supplying power to the Arduino?
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CharcoalRoaster	#5 Posted on 09/21/2020 2:34 PM
Pounder Posts: 599 Location: Chattanooga, TN Joined: April 13, 2012	Quote No, you need to supply power to the low-voltage digital part of the dimmer board, from the Arduino / TC4. Just run an extra wire from 5V on the TC4 to VCC on the dimmer board. (I would really not refer to it as a ZCD, it will confuse people!) thanks for the clarification. I didn't realize the low-voltage side needs separate power input. Quote That doesn't explain why the Arduino power LED isn't on though. How are you supplying power to the Arduino? https://www.amazo...&psc=1 direct to the socket on the ARDUINO CharcoalRoaster attached the following image:


renatoa	#6 Posted on 09/21/2020 3:16 PM
Administrator Posts: 1673 Location: Joined: September 30, 2016	Did you tried the alternative to power Arduino from USB ?


CharcoalRoaster	#7 Posted on 09/21/2020 4:04 PM
Pounder Posts: 599 Location: Chattanooga, TN Joined: April 13, 2012	Quote renatoa wrote: Did you tried the alternative to power Arduino from USB ? Not yet, I will try that next


JackH	#8 Posted on 09/21/2020 4:11 PM
Administrator Posts: 1787 Location: Boston, Massachusetts Joined: May 10, 2011	I would also unplug the TC4 shield from the arduino and see if the arduino alone powers up. Edited by JackH on 09/21/2020 4:18 PM ---Jack KKTO Roaster.

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