The PIC 16F627 is a fairly good replacement device for the 16F84 as it has a
lot of usable built in peripherals but it has the same amount of program memory
as the 16F84 i.e. 1k. So if you are running out of memory space then I suggest
you use a 16F628 as it has twice the program
Note : You may be ok as the RAM is larger so the C compiler will have more room to manoeuver so try it out on the compiler first and simulate your program.
The 16F84 has 1 peripheral (Timer 0) whereas the PIC16F627 has:
(i.e. the same peripherals as the 16F628)
Another feature is that you can switch it from internal 4MHz to slow speed internal 37kHz on the fly so you can used it in power sensitive applications.
Its best feature is
This is nearly four times as much as the 16F84 and, for high level language use, this makes it much easier to use as it is the resource the you run out of most quickly.
Jump to bubble diagram device list.
For a peripheral block summary click here.
The 16F627 is only really missing an ADC and I2C capability but to use it effectively you are really going to have trouble with its limited program memory - the 16F628 or 16F88 are better choices.
Note : You may be ok as the RAM is larger so the C compiler will have more room to manoeuver so do try it out on the compiler first and simulate your program.
You could program I2C by soft coding in C (see this project) and you could use an external ADC but you will probably run out of program memory space.
Jump from PIC 16F627 resources to
Best Microcontroller Projects Home Page.
A tutorial on using the ADS1115 precision 16 bit ADC for low power use.
ESP8266 Webserver: This code shows you how to use lua to create a webserver using html button inputs to contrtol an LED on the ESP module.
How to flash nodemcu firmware into a ESP8266 so you can use the LUA scripting language.
Nodemcu examples starting off wioth simple ones and progressing to wifi coding. This is an excellent tutorial to start learning how to use nodeMCU with lua.
Find out how to download the ESPLorer and use it to upload lua scripts
How to use the TCS230 (/TCS3200) Color detector chip and easily add it to any of your projects.