ISP Shield Assembly Instructions

This is a work in progress, to be finished and posted the week of March 28, 2011.

This page walks through the basic assembly process for building the ISP Shield].

Bill of Materials, or, "What's in the kit?"

Line	Ref Des	Description	Type	Vendor	Vendor Part Number	Quantity
1	n/a	PCB for ISP Shield	Printed circuit board	Evil Mad Science	681	1
2	R1	Reset line pull-up resistor	10k, 1/6 W	Digikey	10KETR-ND	1
3	R2 thru R6	Reset and LED load resistors	1000 ohm, 1/4 W	Digikey	1.0KQBK-ND	5
4	J5	Target Power Enable, Header	3 pin right-angle header, 0.1” spacing	Digikey	TSW-103-25-F-SRA-ND	1
5	PROG, ERROR, PULSE, HELLO	Indicator LED	3mm, Diffused Yellow	Evil Mad Science	357	4
6	XTL	Crystal	16 MHz	Digikey	XC1721-ND	1
7	C2, C3	Capacitors for crystal	18pF, 50 V ceramic	Digikey	BC1004CT-ND	2
8	C1	Bypass Capacitor	0.1uF Capacitor	Digikey	BC1148TR-ND	1
9	S1	Reset Switch	Tactile pushbutton switch	Digikey	679-2452-ND	1
10	ISP6	6 pin ISP Header	2x3 pin 0.1” spaced DIL header	Digikey	609-3202-ND	1
11	J1 thru J4	Header set, 6-pin (2 pcs), 8-pin (2 pcs)	Stacking type header, 0.1” spacing	Evil Mad Science	633	1
12	U1	ZIF Dip Socket	28 pin, 0.3" pin spacing	Evil Mad Science	212	1
13	J5 (jumper)	Target Power Enable, Jumper	2 pin jumper block, 0.1” spacing	Digikey	A26242-ND	1
14	n/a	Optional resistor for auto-reset override	100 ohm, 1/4 W	Digi-Key	100QBK-ND	1

Assembly procedure

We'll go line by line through the kit components. This guide assumes that you have had some soldering experience. If not, or it's been a while, you may also want to look at pages 2 and 5-7 of the [Bulbdial clock] assembly instructions, which go over basic tools and technique. And, if you really are a beginner, there are plenty of good tutorials on line, like [this one].

1. The circuit board.

Here's what the bare circuit board looks like:

We'll be adding components to the labeled locations there.

2. 10 k pull-up resistor

This is the one smaller resistor. Install it in location R1, solder both pins, and clip the excess leads short. Orientation: either way; resistors are not directional.

You can see the smaller size of the resistor in this photo:

3. 1 k resistors

There are five of these resistors, that go in locations R2, R3, R4, R5, R6-- the other places where resistors are visible in the photo above-- and are installed with the same technique as the last resistor.

The color code on these is Black-Brown-Red-Gold, but more importantly, note that there are five of the same type, which go in these locations. In the kit, these may be taped or bagged to separate them from the other resistors.

4. The "Target Power" header

This is a three-pin right-angle header that lies flat to the board. It's visible in the photos, but with the jumper (line #13) already installed. The easiest way to install this is to put it on the board, then turn the board over to let it rest on the header while you solder it in place. We suggest soldering ONE pin only first, and checking to see if it's mounted flush and square to the board before starting the other two pins.

5. LEDs

There are four LEDs included iwth the kit, that go in the locations labeled PROG, ERROR, PULSE, and HELLO. Orientation is important: the long lead goes into the square hole. Solder them in place and clip the leads short. After inserting the LEDs but before soldering, you can bend the leads out at 45 degrees to hold an LED in place while you solder.

6. 0.1 uF

There are four LEDs included iwth the kit, that go in the locations labeled PROG, ERROR, PULSE, and HELLO. Orientation is important: the long lead goes into the square hole. Solder them in place and clip the leads short. After inserting the LEDs but before soldering, you can bend the leads out at 45 degrees to hold an LED in place while you solder.

6 C1 Bypass Capacitor 0.1uF Capacitor Digikey BC1148TR-ND 1 7 XTL Crystal 16 MHz Digikey XC1721-ND 1 8 C2, C3 Capacitors for crystal 18pF, 50 V ceramic Digikey BC1004CT-ND 2 9 S1 Reset Switch Tactile pushbutton switch Digikey 679-2452-ND 1 10 ISP6 6 pin ISP Header 2x3 pin 0.1” spaced DIL header Digikey 609-3202-ND 1 11 J1 thru J4 Header set, 6-pin (2 pcs), 8-pin (2 pcs) Stacking type header, 0.1” spacing Evil Mad Science 633 1 12 U1 ZIF Dip Socket 28 pin, 0.3" pin spacing Evil Mad Science 212 1 13 J5 (jumper) Target Power Enable, Jumper 2 pin jumper block, 0.1” spacing Digikey A26242-ND 1 14 n/a Optional resistor for auto-reset override 100 ohm, 1/4 W Digi-Key 100QBK-ND 1