OK, I'll reply in the order I received the mails, although where there are multiple comments on a point, I have intermingled them. >When can I get one? Well It is going to be a while, by the time I fit the circuit design into spare time at my Orcad machine :) Sorry, but I would like a couple yesterday too :)) >> 1.9.3 LM3919 type bargraph for analogue voltage display >I dont think this it totally necessary - .... Well I was wanting something that had a certain amount of WOW factor for a beginner, and this seemed to be a sensible way to go without having a full DVM. However as I said in the next paragraph, one of the "built in" experiments as supplied is a DVM using the ADC in the target to drive the seven segment display. Yes there is some duplication by doing this, so I may rethink this. Perhaps having the tracking there, but not fitting the components :) >> 2.11 Breadboard area to be provided using "measles array" of solder pads >> on 0.1" centres. Area to cover all otherwise unused space on PCB. >Eeeeeeeuch - let the hobbyist loose on the board with a soldering iron ??? - >Much as people hate them, I think that an optional (pick a standard sized >one and leave space for it) Breadboard would be a better idea here - .... Yes I agree, but the hobbyist I think will do most of their experimenting by programming, and using existing hardware or virtual peripherals. If a suitable breadboard can be persuaded to fit, then so much the better. However for developers who use the board, then the solder area is probably better :) For this reason I would be tempted to have the breadboard easily removable if supplied fitted, which it would need to be if we are to avoid having the hobbyist do soldering :{} >Woooohoooo - I love Zif sockets. They do plug into a standard 40pin dip >header though so it might be an idea to have Target 1 and Target 2 sockets Well Sean reckoned he could get ZIF sockets at real good prices in Taiwan, so I was reckoning on fitting these straight off. Low profile ones preferred. >Just my 2 cents worth but this was well worth the effort Alan. I feel >you've covered most of the requirements - its just down to cost now. Thanks for the complement. It is going to take a while to get to the point of costing it though. Wouter said >I would prefer to call it a set or something, because a kit >sounds like 'solder it yourself'. Byron said >I'd like to see the beginner dropped too. Of course I'm still >partial to the name I choose several week ago: The PICLIST Designer. Agreed, and I think I do prefer the name Byron has come up with, which is also possibly more likely to get a hobbyist to purchase it ironically :) >Estimated price? No estimate yet, I will carry on doing a circuit, and come up with a list of parts, that people can work with. I would like to get some test PCB's done fairly early on, possibly through Tsvetsan, and if that is done then people can get them from him and build test version, and come up with software modules for it. >Suggestion: How about making Target 2 a 28 pin? This is the other >favourite "footprint". Then you have the best of both worlds. Well my attitude on this is that if a developer is designing for a 28 pin destination chip, then while using the Piclist Designer, they use a 40 pin chip, using only the resources that are in the 28 pin chip. I have not gone digging in the data sheets to see if the pinouts allow easy conversion between the two footprints. Bear in mind that I am expecting to have a jumper selected crystal and RC osc components for target 2. There were a number of bits like this and the USB chip which got forgotten in the brief. >Also, is there allowance for I2C? Good for training and further expansion. I have not made specific allowance as such for I2C, but there is no reason why the I2C hardware in either (or both) of the target processors cannot be used. All I/O pins will be potentially available to do whatever the user requires. As I said in the brief, the only pins vaguely allocated on Target 2 are the uart pins. I2C can be built up on the breadboard area. OK, I will carry on working on a circuit for now, and see what I come up with. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.