PICAXE-20M2 Microcontroller Chip
Description
- Supersedes both the 20M chip
- Support i2c and Manchester encode RF radio transmission
- Input type can be selected to be either TTL or ST style on any pin
- Voltage range: 1.8V-5.5V
- Memory: 2048 bytes
- Maximum internal frequency: 32MHz
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It is a great microcontroller, easy to use, with a lot of good qualities
I use this one more than the others because of the PWMs. Great for controlling motor speeds & steering servos.
I have used many of these chips; have been always satisfied
I have about a dozen of home automation projects in the house running on 20M2. I do not know how to write programs but Picaxe has a graphic version of programming which I use all the time. Great product and its associated programming free software.
The cost of the 20M2 [RB-Pic-31] wasn't that much more than the 08M2 and is less than the other PICAXE microcontrollers such as the 18M2 [RB-Pic-32] (other microcontrollers with less usable pins!). The 20M2 offers 16 configurable input/output pins and harnesses new technology including: internal temperature sensor, Manchester radio encoding by use of simple commands [rfout, rfin], additional memory, time-sliced parallel multi-tasking of up to 8 tasks, etc. I use the 20M2 in my sensor pack wireless transmitters around the house with the 830 Tie Point Interlocking Solderless Breadboard [RB-Cix-10] and the SeeedStudio Adjustable Breadboard Power Supply [RB-See-93]. Highly recommended!!
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