Cytron Technical Forum

I follow the step by step video in SK40C, but when reach the step to connect the programmer to pc, my pickit2 show me "No Device Found".　Each time I "Check Communication"', the sk40c board and programmer led did blink, but nothing happen, still no device found.

I am using UIC00B as programmer, SK40C board with PIC16F877A microcontroller.
Please help, Thanks.

Does it work before this?

Better check the VDD voltage. Is it 4.++ V?

Hardware seem good, connection is correct! Is Rev1 SK40C.... Yup, I would suggest to check the 5V point...

zhenning WROTE:Does it work before this?

No, i purchase it long time ago, now only take out to assemble.

gadgetng WROTE:Better check the VDD voltage. Is it 4.++ V?

Yes I did check. it show test succes.

robosang WROTE:Hardware seem good, connection is correct! Is Rev1 SK40C.... Yup, I would suggest to check the 5V point...

sorry i am newbie, how to check?
I am using Adapter Teletron TMC-500PM as the power supply => http://www.cytron.com.my/viewProduct.ph ... -TMC-500PM

Check the ribbon wire if its broken?

Get yourself a multimeter, turn to DC voltage, red probe at VDD of SK40, black probe at GND of SK40, what is the LCD show?

robosang WROTE:Get yourself a multimeter, turn to DC voltage, red probe at VDD of SK40, black probe at GND of SK40, what is the LCD show?

zhenning WROTE:Check the ribbon wire if its broken?

I follow robosang instruction, it show reading 4.76V. When i feel disappointed, suddenly saw the ribbon wire bought last time.
so i replace it, it works!!!! thanks for you guys, really help me a lot!!