Sprint-Layout offers all needed functions to design your own layouts. So finally, you can concentrate to the essential thing: Designing and optimizing your PCB-layouts. Because of the logical and understandable strucure of Sprint-Layout the usage is very easy to learn. There is no unnecessary “ballast” which makes it difficult to keep the overview or which makes the usage almost impossible. With Sprint-Layout you can design your PCB’s quick and easy. Here's a nice PIC site that has built the kit with photos too.GBP 31.95 * Approx GBP 40.00 including VAT and Delivery in the UKīuy It Now: Direct from Crownhill Product Information The Inchworm assembly manual should make building one from scratch easy, of course the PCB makes it look nice and more reliable than a scratch built one. The built in 800ma 5V supply for your projects with more current available than any other ICD many clones are parasitic powered & USB is limited to about 400ma an you CAN damage your USB ports with some USB clones Simple power requirements 9-15VDC wall wart or 7-15VDC if you use a LM2905 instead of the 7805. 2 ICs ST232 & 16F877A, a voltage regulator 7805 and 4 transistors. The Inchworm was designed to be as simple & foolproof a design as possible. I've not powered up the old Clearview ICE in ages.
If I'm playing with the code then I use MPLABs simulator (super fast). Normally I will program run (fast), if I have a problem then I debug using breakpoints and use only the watch windows I need to view. I use my Inchworm & Firefly almost every day, it's amazing how handy the debug mode is. I have a real ICE (Tech-tools) which is a wonderful tool, too bad Tech-Tools stopped making modules for it. Every variable in an open watch window will add about 1sec to the stepping speed. It will single step sans watch windows at about 2sec per instruction. The serial debug speed is exactly like all other ICD2 clones EXCEPT the 18F4550 variant which is very fast. The real ICD2 has a power toggle mode, the Inchworm is always on (you can power the Inchworm from your target though) It does not support 3.3V chips (it is unbuffered), it is RS232 not USB (but a USB to RS232 adapter is about $12), it does not have a programmable VPP (it is fixed to 12.5 - 13V). Yes it's a serial ICD2 clone, and MPLAB ICD2 compatible.
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