@@ -2,9 +2,6 @@ Parallel JTAG (Wiggler) - BOM

 --

-Parts Quantity

-

-

 Capacitors

 (1) ceramic or film cap, 100nf

@@ -44,97 +41,5 @@ Other Components

 (1) 2N3904 transistor

 (1) DO-41 diode, 1N4004 to 1N4007

 (1) barrel jack, 5.5mm x 2.1mm, female, 3 prong

-(1) DPDT ON-ON switch, 2.54mm pin spacing

-(2) LM1117T-ADJ or LD1117 LDO regulator

-

-

-Components

-

-

-JTAG Section

-

-J1 - DSUB-25 Connector, Right Angle, Male [1]

-P1 - 2 pin header

-P2 - 3 pin header

-P3 - 8 pin header

-U1 - 74HCT244 octal buffer/line driver [2]

-Q1 - 2N3904 transistor [3]

-D1 - 5mm LED, Yellow (VREF power indicator)

-C1 - Ceramic or Film cap, 100nf (output voltage filter)

-R1 - 1/4W resistor, 10K (to 2N3904, base)

-R2 - 1/4W resistor, 100 (to 74HCT244, 1A0)

-R3 - 1/4W resistor, 100 (to 74HCT244, 1A1)

-R4 - 1/4W resistor, 100 (to 74HCT244, 1A2)

-R5 - 1/4W resistor, 100 (to 74HCT244, 1A3)

-R6 - 1/4W resistor, 100 (from 74HCT244, 2Y0)

-R7 - 1/4W resistor, 47K (to 2N3904, base to emitter ground)

-R8 - 1/4W resistor, 2K2 (TMS power tap, current limiter)

-R9 - 1/4W resistor, 2K2 (TCK power tap, current limiter)

-R10 - 1/4W resistor, 2K2 (TDI power tap, current limiter)

-R11 - 1/4W resistor, 2K2 (nTRST power tap, current limiter)

-R12 - 1/4W resistor, 100 (from 2N3904, collector to nSRST)

-R13 - 1/4W resistor, 100 (to 74HCT244, 2A0, TDO)

-R14 - 1/4W resistor, 100 (from 74HCT244, 1Y3, nTRST)

-R15 - 1/4W resistor, 100 (from 74HCT244, 1Y2, TDI)

-R16 - 1/4W resistor, 100 (from 74HCT244, 1Y1, TCK)

-R17 - 1/4W resistor, 100 (from 74HCT244, 1Y0, TMS)

-R18 - 1/4W resistor, 1K (nSRST pullup resistor)

-R19 - 1/4W resistor, 330 to 5K1 (VREF LED current limiter) [4]

-

-

-Dual Power Supply Section

-

-J2 - Barrel Jack, 5.5mm x 2.1mm, female, 3 prong (VCC)

-SW1 - DPDT ON-ON switch, 2.54mm pin spacing (3V3/5V0 power switch)

-U2 - LM1117T-ADJ or LD1117 LDO regulator (3V3 power supply)

-U3 - LM1117T-ADJ or LD1117 LDO regulator (5V0 power supply)

-D2 - 5mm LED, Green (3V3 power indicator)

-D3 - 5mm LED, Red (5V0 power indicator)

-D4 - DO-41 diode, 1N4004 to 1N4007 (protection diode)

-C2 - Electrolytic cap, 100uf 16V (3V3 power supply in filter)

-C3 - Electrolytic cap, 100uf 6.3V (3V3 power supply adj to out filter)

-C4 - Electrolytic cap, 100uf 6.3V (3V3 power supply out filter)

-C5 - Electrolytic cap, 100uf 16V (5V0 power supply in filter)

-C6 - Electrolytic cap, 100uf 6.3V (5V0 power supply adj to out filter)

-C7 - Electrolytic cap, 100uf 6.3V (5V0 power supply out filter)

-R20 - 1/4W resistor, 330 (3V3 power supply adj)

-R21 - 1/4W resistor, 200 (3V3 power supply out)

-R22 - 1/4W resistor, 330 to 5K1 (3V3 LED current limiter) [4]

-R23 - 1/4W resistor, 680 (5V0 power supply adj)

-R24 - 1/4W resistor, 220 (5V0 power supply out)

-R25 - 1/4W resistor, 330 to 5K1 (5V0 LED current limiter) [4]

-

-

-Notes

-

-[1] The US standard is preferred, as this board is designed in the US. The

-    European standard may fit, but the installation may be off by ~1.3mm; it

-    will slightly stick out. An European variant will be created soon.

-

-    US standard

-    board edge to nearest pin line: ~8.08mm

-    board edge to mounting hole: ~9.50mm

-    

-    European standard

-    board edge to nearest pin line: ~9.40mm

-    board edge to mounting pin: ~11.80mm

-

-[2] You can also use the HC variant, but HCT is recommended. You're also better

-    off socketing this IC!

-

-[3] 2N3904 NPN transistor is from the original alec @ sensi.org schematic. It

-    is US-centric, however. The onetransistor.eu schematic uses the BC548 due

-    to the schematic's European origin. To install the BC548 NPN transistor, it

-    must be installed backward in comparison to its 2N3904 cousin.

-

-    However, the other European BC547 is exactly pin-to-pin compatible to the

-    2N3904, so backwards installation is not necessary.

-

-    2N3904, 2N2222, BC547 = EBC

-    BC548, BC337 = CBE

-

-[4] LED brightness. The higher value the resistor is, the lower the LED's

-    brightness is. Notice R20 is separate from these resistors. Do NOT change

-    this particular resistor unless you know what you are doing, as it affects

-    the set voltage from 3V3!

\ No newline at end of file

+(1) DPDT ON-ON switch, 2.54mm x 5.08mm pin spacing

+(2) LM1117T-ADJ or LD1117 LDO regulator

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