Robotics – The PICAXE X2 Series
by Sam on Aug.19, 2011, under Electronics, Microcontrollers, Picaxe
The PICAXE X2 Family
The PICAXE ‘X2’ series of microcontrollers, by Revolution Education Ltd., are Rev.Ed.’s advanced series of microcontrollers. The ‘X2’ series of microcontrollers are feature rich, and much much more powerful than Revolution Education Ltd.‘s previous microcontrollers. The ‘X2’ series consists of the 20X2, 28X2, 28X2 lv*, 40X2, and the 40X2 lv*.
The PICAXE ‘X2’ series of microcontrollers have many great new features. Features like almost every pin being configurable as an input or an output. Also the new PICAXE ‘X2’ series of microcontrollers have up to 3 pins that can be individually configured as hardware interrupt pins. The PICAXE ‘X2’ series of microprocessors have many more ADC channels available, support for touch sensing, and they also have an addition of two internal comparators that constantly compare two analogue values.
The PICAXE ‘X2’ series have much higher clock rates than before. Their default frequency is now 8 MHz as opposed to 4 MHz previously. This increase in frequency has greatly improving the processing speed of the PICAXE chips. The frequency also can be as high as 64 MHz!! The PICAXE ‘X2”s also have a much larger RAM, and up to 4 programming slots available on chip. In addition to the four internal programming slots, up to 4 other slots can be used by connecting an external i2c EEPROM chip – per i2c EEPROM connected! Since up to 8 different I2C chips could be used on the same I2C bus, we have a ‘theoretical’ 32 additional program slots available!
The new PICAXE ‘X2’ microcontrollers also have many more great features such as the ability to communicate with Microchip UNI/O EEPROM memory chips, the servo command now operates at 8 or 32 MHz, there is a new new doze low-power command, internal pull-ups, and many more great features. You can download the PICAXE ‘X2’ product briefing as a PDF from the link below.
(*lv = Low Voltage, 1.8v-3v Version)
| Feature | PICAXE Command | 20X2 | 28X2 | 28X2 5v | 28X2 3v | 40X2 | 40X2 5v | 40X2 3v |
| PIC18F series | 14k22 | 25k22 | 2520 | 25k20 | 45k22 | 4520 | 45k20 | |
| (V) Range | 1.8-5.5 | 2.1-5.5 | 4.5-5.5 | 1.8-3.6 | 2.1-5.5 | 4.5-5.5 | 1.8-3.6 | |
| Firmware Version | C.0+ | B.3+ | B.0-B.2 | B.A-B.C | B.3+ | B.0-B.2 | B.A-B.C | |
| Max In/Ex Freq(MHz) | setfreq | 64/na | 16/64 | 8/40* | 16/64 | 16/64 | 8/40* | 16/64 |
| Variables RAM | peek, poke @bptr | 128 | 256 | 256 | 256 | 256 | 256 | 256 |
| Scratchpad RAM | put, get @ptr | 128 | 1024 | 1024 | 1024 | 1024 | 1024 | 1024 |
(* 32MHz [8MHz resonator with x4 PLL] is recommended for programs using serial commands as 40MHz is not an even multiple of 8 and so does not produce valid serial baud rates.)
See these other articles in the ‘Robotics:’ series…
- Robotics – Intro To Microcontrollers
- Robotics – Intro To PICAXE
- Robotics – Microcontroller ? Microprocessor ? or Microchip?
- Robotics – PICAXE M2/X1 Parts
Please leave your comments and sugestions for future articles in the series below. Thank you. 
-
Welcome to Samuel A. Clarke.com
You can also subscribe by Email. Just fill in the field below:
August 29th, 2011 on 11:09 am
Woah! I’m really loving the template/theme of this site. It’s simple, yet effective. A lot of times it’s hard to get that “perfect balance” between user friendliness and visual appeal. I must say that you’ve done a excellent job with this. In addition, the blog loads super quick for me on Firefox. Excellent Blog!
August 29th, 2011 on 12:35 pm
Have you ever considered writing an ebook or guest authoring on other blogs? I have a blog based on the same ideas you discuss and would really like to have you share some stories/information. I know my audience would value your work. If you are even remotely interested, feel free to send me an e-mail.
August 30th, 2011 on 5:58 am
I do not know whether it’s just me or if everybody else encountering problems with your blog. It looks like some of the text in your content are running off the screen. Can somebody else please comment and let me know if this is happening to them as well? This could be a issue with my internet browser because I’ve had this happen previously. Thanks
August 30th, 2011 on 11:58 am
I believe this website contains some really great information for everyone : D.
September 2nd, 2011 on 10:41 am
I like to read your site a couple times a week for new readings. I was wondering if you have any other niches you write about?
September 2nd, 2011 on 11:41 am
yummmmy. thanks for the ideas , id love to follow your blog as often as i can.possess a good day~~
September 2nd, 2011 on 10:18 pm
I am extremely excited to come across this site, it’s precisely what I was looking for. Fanned : D
September 3rd, 2011 on 3:13 pm
Fantastic web site. Plenty of useful info here. I am sending it to some pals and also bookmarking it. And certainly, thanks to your effort!
September 4th, 2011 on 5:51 am
Hey! This is my first comment here so I just wanted to give a quick shout out and tell you I truly enjoy reading your blog posts. Can you suggest any other blogs/websites/forums that cover the same subjects? Thanks a lot!
September 5th, 2011 on 12:35 am
dagens pris på guld…
[…]b What cache product do you use for this site? It loads so much faster than m hn[…]…
September 5th, 2011 on 11:43 am
I intended to put you the little observation just to say thanks the moment again regarding the exceptional principles you have shown on this website. It’s generous with you to grant without restraint precisely what most of us would have supplied as an ebook to earn some cash for themselves, chiefly since you could have done it if you decided. These guidelines additionally worked as the good way to know that the rest have the identical eagerness the same as my own to know many more with respect to this condition. I think there are thousands of more fun moments up front for individuals that view your blog post.
September 8th, 2011 on 4:50 pm
Do you have a spam issue on this site; I also am a blogger, and I was wanting to know your situation; we have created some nice procedures and we are looking to trade techniques with others, please shoot me an email if interested.
September 8th, 2011 on 6:11 pm
Hi there! I just wanted to ask if you ever have any problems with hackers? My last blog (wordpress) was hacked and I ended up losing a few months of hard work due to no back up. Do you have any methods to protect against hackers?
September 8th, 2011 on 7:50 pm
Thanks, I have recently been looking for information about this subject matter for ages and yours is the best I’ve found so far.
September 8th, 2011 on 9:53 pm
Greetings I am so glad I found your blog page, I really found you by mistake, while I was looking on Bing for something else, Anyhow I am here now and would just like to say cheers for a fantastic post and a all round interesting blog (I also love the theme/design), I don’t have time to go through it all at the moment but I have bookmarked it and also added in your RSS feeds, so when I have time I will be back to read a great deal more, Please do keep up the fantastic work.
September 9th, 2011 on 6:45 am
Thanks for your marvelous posting! I seriously enjoyed reading it, you will be a great author.I will always bookmark your blog and may come back later on. I want to encourage you to ultimately continue your great posts, have a nice weekend!
September 9th, 2011 on 7:39 am
Wow that was strange. I just wrote an really long comment but after I clicked submit my comment didn’t show up. Grrrr… well I’m not writing all that over again. Anyway, just wanted to say excellent blog!
September 9th, 2011 on 10:44 am
Howdy just wanted to give you a quick heads up. The words in your article seem to be running off the screen in Ie. I’m not sure if this is a format issue or something to do with browser compatibility but I thought I’d post to let you know. The design and style look great though! Hope you get the problem fixed soon. Many thanks
September 9th, 2011 on 10:46 am
Hi there would you mind letting me know which hosting company you’re working with? I’ve loaded your blog in 3 completely different browsers and I must say this blog loads a lot faster then most. Can you recommend a good internet hosting provider at a reasonable price? Thanks a lot, I appreciate it!
September 9th, 2011 on 11:37 am
Your web page does not display appropriately on my droid – you may wanna try and fix that
September 9th, 2011 on 11:57 am
Thanks for your personal marvelous posting! I truly enjoyed reading it, you could be a great author.I will be sure to bookmark your blog and may come back at some point. I want to encourage one to continue your great work, have a nice morning!
September 9th, 2011 on 12:27 pm
My coder is trying to persuade me to move to .net from PHP. I have always disliked the idea because of the expenses. But he’s tryiong none the less. I’ve been using Movable-type on a variety of websites for about a year and am concerned about switching to another platform. I have heard great things about blogengine.net. Is there a way I can transfer all my wordpress posts into it? Any kind of help would be really appreciated!
September 9th, 2011 on 12:47 pm
Can you name the media that Antonio Bryant complained to? I remember Dominik saying that too. But I never heard Antonio Bryant complain to any media, Broadcast or Print. I believe it comes under the heading of rumors started by Dominik. ie Jagz, when they hired him he was an offensive genius. When they fired him he was a fraud! Then they trashed Bates after he was gone! Then they trashed AB when he left. Dominik even lied to the media about Penn during negociations. I know that Dominik said that. But can you some up with that media that you claim AB complained ?
September 9th, 2011 on 1:21 pm
I was wondering if you ever thought of changing the layout of your site? Its very well written; I love what youve got to say. But maybe you could a little more in the way of content so people could connect with it better. Youve got an awful lot of text for only having one or 2 images. Maybe you could space it out better?
September 9th, 2011 on 3:50 pm
Howdy, i read your blog from time to time and i own a similar one and i was just wondering if you get a lot of spam comments? If so how do you stop it, any plugin or anything you can recommend? I get so much lately it’s driving me mad so any help is very much appreciated.
September 9th, 2011 on 10:04 pm
I disagree that tech may not answer the proble, the question is will the idiots in washington obviate the problem with internationalist corrpution before the answer gets here.
September 10th, 2011 on 4:03 am
Sorry for the huge review, but I’m really loving the new Zune, and hope this, as well as the excellent reviews some other people have written, will help you decide if it’s the right choice for you.
September 10th, 2011 on 7:16 am
Audio began playing as soon as I opened this web site, so annoying!
September 10th, 2011 on 9:24 am
of course like your web-site but you need to take a look at the spelling on several of your posts. A number of them are rife with spelling issues and I find it very bothersome to inform the reality then again I?ll definitely come again again.
September 11th, 2011 on 2:20 am
You need to find some extra-curriculars within nevertheless. Sponser whales, volunteer for Habitat for Mankind, certainly be a Big brother, have a shot at for the Congressional Award. All of these things will help you fall into some university or college. If you have a persue it. Darkness some individual or a physicist on the job (if you can).
September 11th, 2011 on 2:09 pm
Great blog you have here but I was wondering if you knew of any message boards that cover the same topics talked about here? I’d really love to be a part of online community where I can get advice from other experienced people that share the same interest. If you have any suggestions, please let me know. Cheers!
September 11th, 2011 on 2:20 pm
It’s a shame you don’t have a donate button! I’d definitely donate to this outstanding blog! I guess for now i’ll settle for bookmarking and adding your RSS feed to my Google account. I look forward to new updates and will talk about this site with my Facebook group. Talk soon!
September 12th, 2011 on 2:26 am
Thank you, I have recently been searching for info about this topic for ages and yours is the greatest I’ve discovered so far. But, what about the conclusion? Are you sure about the source?
September 12th, 2011 on 5:32 am
It’s interesting that Hank Aaron had just 20 SB (in 29 tries) over his first 6 seasons through age 25, which (I suspect) are generally a player’s prime base-stealing years. Over his next 9 years (age 26-34), he averaged 22 SB.
September 12th, 2011 on 5:43 am
I just couldn’t depart your website before suggesting that I actually enjoyed the standard information a person provide for your visitors? Is going to be back often in order to check up on new posts
September 12th, 2011 on 6:08 am
Valuable information. Lucky me I found your website by accident, and I am shocked why this accident didn’t happened earlier! I bookmarked it.
September 12th, 2011 on 7:16 am
obviously like your web site but you need to check the spelling on quite a few of your posts. Several of them are rife with spelling problems and I find it very bothersome to tell the truth nevertheless I will certainly come back again.
September 12th, 2011 on 7:49 am
magnificent post, very informative. I wonder why the other experts of this sector don’t notice this. You must continue your writing. I’m sure, you’ve a great readers’ base already!