Introduction: ATMEGA168 TQFP32 Smd Programmer Shield

Picture of ATMEGA168 TQFP32 Smd Programmer Shield

This shield I have made to program an ATMEGA168 with a TQFP32 package without soldering.

Step 1: Intro

With this shield you can program an atmega168 microcontroller (µC) with a TQPF32 package without soldering. Just lay the chip on the top of the board and fix it with the coverplate. So you can program the µC with an ISP-Programmer.

With this shield you can programm

ATmega48
ATmega8
ATmega8L
ATmega8A
ATmega88
ATmega168

and maybe other µC.

With the two jumpers you can select the external oscillator or the internal.

Step 2: Needed Parts and Components

Picture of Needed Parts and Components

What do I need to create this shield:

Devices
- Soldering iron
- PCB etching machine
- UV exposure unit
- Drilling machine
- scissers
- knife
- circular saw


Parts

- Double sided photoresist board
- 1mm cable for the via's
- Screws 3mm
- 8x round pvc spacer 7x5mm


Components

- 2x 22pf Capacitors smd 1206
- 1KOhm Resistor smd 1206
- LED red smd 3528
- 16MHz Crystal smd
- 2x2 Pin male connector
- 2x3 Pin male connector
- 2 Jumpers

Step 3: Shematic and PCB

Picture of Shematic and PCB

!!! PLEASE ATTENTION !!!
Be careful with the drilling the holse. The holes from the PCB and the plexiglas must be exactly similiar.
If they are not, than it will be a short-circuit and can be damage the µC.

Step 4: Plexiglas

Picture of Plexiglas

To fixing the µC I used a plexiglas plate.

1. Cut the plate to 55x35mm.
2. Cuting out the template and fix it with some tapes
3. Drill the holes up to 4mm

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