3 ms·
> While controlling the ESP8266 is great, the raw chip itself lacks an analog to digical [sic] converter (ADC) The ESP-12 and a few other models have an ADC in
by No1 11y ago
> While controlling the ESP8266 is great, the raw chip itself lacks an analog to digical [sic] converter (ADC)
The ESP-12 and a few other models have an ADC integrated.
> and only a few I/O pins.
Again, with 9 GPIO pins on the ESP-12 (and various numbers in between on other models), I wonder how many are required to qualify as more than a few.
> [Philips Hue Bulb] A $50 light bulb that requires a $60 base station, proving my point entirely
As another poster mentions, Philips Hue uses ZigBee Light Link, not WiFi.
All around, a sloppy blog post, but slick web page.
- gh02t 11y agoThey all have an ADC, it's part of the chip. It's just not broken out on all of them. It's also not that great, 10bit resolution is so-so and it only works for signals between 0 and 1V. This means you can't easily use for instance the awesome TMP36 temperature sensors with it. I mean you can, but you need something like a voltage divider (which adds error) and you need to recalculate the voltage to temperature conversion.