As I mentioned earlier I am building my JuneBug in three steps. It was tested at the end of each step prior to going on to the next.
1. Get the 18F2550 talking to the PK2 interface. (done - OK)
2. Add the analog parts to allow it to program debug. (done- OK)
3. Add the tutor parts. (to do)
I used 1/8 watt resistors in place or the 3 SIPs.
Tested the JuneBug with a 16F88 target and was impressed with how well it works with the MPLAB debugger. Stepping is quite fast, as is updating the SFRs. Anyone using a RS232 ICD2 (Inchworm) will appreciate the improvement in speed.
The rest of the build is mostly just the tutor processor socket, LEDs, and switches.
Problems:
None that were real. All the parts had the correct pinouts
and construction was straight forward. I made a few minor blunders along the way like testing VPP with my DVM on AC
. But the O-Scope showed it to be correct, only noticed that the DVM was on AC after I started writting this..
Earlier I posted about a problem with a VPP short. I should clarify that that was not with a real JuneBug PCB. Prior to getting the JuneBug PCB from Bill I had started construction on a JuneBug Clone without the tutor.