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Still looks like 200 ohm to me unless I’ve set the meter incorrectly. I can’t read the resistor itself..my eyes. The unit is a 5volt setup. I will get another uno next week to run a check on the plot like you suggest..Thanks again..
Thanks so much for getting back to me! I tried the battery but that did not change anything...I’m going to attach a few photos that show my setup. I used the exact led you said to and I am using a 200 ohm resistor rather than 220 but it works on the adruino uno. I pulled the a0 and a1 pins and soldered the resistor directly to the unit. I program the pro mini with an inland ftdi usb connected to a Raspberry pi mod 3 using a raspberry pi power adapter 2.5 amps. The power should be good. The programming part is flawless..loads every time. With a minjump of 150 it basically blinks every 2 seconds. 250 did not help. A real stumper..
I was successful with the arduino uno .. I then tried the pro mini and it is too "noisy" for me to detect when I blow on the led .. I soldered the led directly to the pins that did not help .. It is a great project .. I wish I knew how to damp down the "noise" on the pro mini. I even tried a plastic straw over the exposed led wires but that had no effect...
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