I think I might be looking in the wrong place for the change to occur. As the temperature rises, it passes the "trip" point and no problem. BUT as the temperature falls, the trip point might be passed because the Wemos doesn't have enough time to see the change.
I think I'm going to have to figure another trip point criteria.
Thanks for the idea
I see the ESP32 boards are back up. Bummed, when I decided to purchase one, they were out. I wound up getting a "DOIT" brand ESP32. Which does not have the battery connector. Why is the ESP32 lite version cheaper than the Wemos Mini Pro? Does the tin can on the top of the pro version help with radio interference? Are they both fcc certified or just the Pro? What would be the benefits of an onboard sd slot? Data logging? Curious... Why is there not an mpx antenna like the Mini Pro?
I'm going to assume that these are NOT all tied together. Which means that I don't have to cut any traces. And, I should be able to turn on/off 6 relays with one Wemos, using two shields. D0..D8 are IO pins. Which pins should I avoid? I believe 2 of them? Which gives me 6 to turn on/off relays. Yes?
Deshipu? I'm going to list them in my Pinout notes so I don't have to ask again. Thanks in advance.
Not one reply! I remember when the original forum was lost because there wasn't a backup. This forum just never did recover from that. Has this actually hurt the wemos product space? It would seem so. Raspberry?
"which basically means that you use the main processor to handle the communication, by using a library specially written for that.'
I'm looking at 2 Wemos D-1 mini examples; I2C detect, I2C scanner.
I2C detect uses:
and I2C scanner just uses:
Which one does all the busy work for I2C? Can you explain?
It works when connected to the PC's USB port, but not when running from wall power. The element that changed is the power source, so I'd start with verifying or fixing the power source; especially given the high ripple voltages found on many power sources.
@blckpstv to simplify the circuit, the power is supplied from the D1 Mini 3.3v stabilizer.
you don't need external ASM1117 and logic level converter.
in any case, Analog input voltage can be GND–0.3 / VDD+0.3 V
but you always can make resistor divider for your voltage range.