K8048 (Intermittent Fault?)

Kits PC Related Projects
1

Recently completed kit: all components checked and all soldering clean, bright joints with no solder bridges.
Power supply voltage 15V dc and on board voltages appear to be in reasonable range for the components used.

Three different serial leads tested.

Returns error message “No Velleman programmer detected”
OR
Returns message indicating incorrect PIC inserted. When this happens the serial cable runs warm – i.e. cable carrying current.

Any useful thoughts appreciated.

2

Hi,

Have you checked to make sure VR1 and VR2 are not swapped?

3

Appreciate your trouble to reply, many thanks.

Unfortunately not the case. Correct regulators and correct output levels.

4

Hi,

I bought K8048 a few days ago in Ireland, assembled everything and re-checked it again including the serial cable connection and 15v power supply.

I need a feedback from the support team.

  • the latest software update PICprog Rev 3.0.0.5 available from your side does not seem relevant to the actual device I got; at least the picture and the instruction is presented in PICprog Rev 3.0.0.5 running does not match my board k8048 ; please suggest if the software update 3.0.0.5 is supposed to be compatible with the the board that is produced in 2004.

  • I’ve tried another one ProgPic2 (K8048 Velleman PIC Programmer & Experiment board Rev. 2.6.0 2004. Software © Johann Aichiger) and did not succeed either with with the board connection “COM-Init-Error!”; it’s on CD, but the version does not look very new.

  • LD7 POWER (green) is ON and LD9 (red) is flashing when 15v power supply is plugged in; following Rev. 3.0.0.5 the microcontroller should not be plugged in from the beginning when we just check COM port connection, but I could not find this for Rev. 2.6.0. Thanks.

5

Hi,

On the PICPROG2009 did you goto “Function” --> “Hardware Configuration” and then select the VM111/K8048?

Also the K8048 requires a real/native serial port,
You can not use a USB to RS232 for this kit.

Hope this helps.

6

Thanks a lot for your suggestions.

On the PICPROG2009 did you goto “Function” → “Hardware Configuration” and then select the VM111/K8048?

Implemented, but seems isn’t the reason in my case.

Also the K8048 requires a real/native serial port, You can not use a USB to RS232 for this kit.

I suspect this is a point I have to sort out first. I use a real serial port. I mean, there is no USB converter. According the instruction the following PINs are connected to each other - 2, 3, 4, 5, 7, 8, 9 (1, 2, 6 are free). I hope it’s correct. The message produced is still - “There is no Velleman programmer connected to the PC”. The Com1 port was configured on my laptop with Windows XP as below

Bits per sec: 9600 (this is the lowest I’ve tried)
Data bits: 8
Parity: None
Stop bits: 1
Flow control: None

I’ll try to test my serial port itself tomorrow to make sure it works.