Open Access v4 Build Instructions - Revision history

QUARKy: /* Detailed Instructions */

2013-07-21T05:53:38Z

Detailed Instructions

← Older revision		Revision as of 22:53, 20 July 2013
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	**Power supply current (R5) (Critical, don't mess this up!)		**Power supply current (R5) (Critical, don't mess this up!)

	'''Small capacitors (no polarity~~)'''~~		'''Small capacitors (ceramic,no polarity; 0.1uF, 50V)'''
	*0.1uF ~~ceramic (no marking~~, ~~check package or strip for value~~)		*(C3, C5-C17)
	**Decoupling caps (C4,C5~~,C8)~~
	*200pf ceramic (no markings)
	**Power supply cap (C3)

	'''Diodes (observe polarity stripe on end)'''		'''Diodes (observe polarity stripe on end)'''
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	**Schottky,1A: (D2)		**Schottky,1A: (D2)
	**TVS, PMDS case: (D3, D4, D5)		**TVS, PMDS case: (D3, D4, D5)

	*Reverse protection diode (Large, markings vary)
	**(D2, stripe towards top of PCB)
	*Bi-directional TVS diode (Large, only diode with no polarity stripe)
	**(D3, polarity doesn't matter)

	*LEDs: Light Emitting diodes		*LEDs: Light Emitting diodes

2013-07-21T05:42:27Z

Detailed Instructions

← Older revision		Revision as of 22:42, 20 July 2013
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	*LEDs: Light Emitting diodes		*LEDs: Light Emitting diodes
			**Blue, 1206: (LED3-LED8)
			**Green, 1206:(LED1, LED2)

	*PTC Fuses (No polarity, 200mA, 15V; Markings:C)		*PTC Fuses (No polarity, 200mA, 15V; Markings:C)

2013-07-21T05:40:01Z

Detailed Instructions

← Older revision		Revision as of 22:40, 20 July 2013
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	'''Diodes (observe polarity stripe on end)'''		'''Diodes (observe polarity stripe on end)'''
	*~~1N5819 Schottky Diode~~ (~~Markings: 75 or various~~)		**2A, 35V: (D1)
	**~~Power supply diode (D1~~, ~~stripe away from GND, i.e. towards the power supply IC)~~		**Schottky,1A: (D2)
	*5.6V Zener Diodes (~~Markings:CV or various~~)		**TVS, PMDS case: (D3, D4, D5)
	**~~All input lines~~ (D4~~-D18~~, ~~D20-29, stripe is towards outside edge of PCB~~) ~~(D19, stripe is towards the right side of PCB)~~
	**In all cases, the stripe is oriented AWAY from ground.

	*Reverse protection diode (Large, markings vary)		*Reverse protection diode (Large, markings vary)
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	*LEDs: Light Emitting diodes		*LEDs: Light Emitting diodes
	**2A, 35V: (D1)
	**Schottky,1A: (D2)
	**TVS, PMDS case: (D3, D4, D5)

	*PTC Fuses (No polarity, 200mA, 15V; Markings:C)		*PTC Fuses (No polarity, 200mA, 15V; Markings:C)

2013-07-21T05:38:35Z

Detailed Instructions

← Older revision		Revision as of 22:38, 20 July 2013
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	**(D3, polarity doesn't matter)		**(D3, polarity doesn't matter)

	*Light Emitting diodes (~~LEDs~~)		*LEDs: Light Emitting diodes
	**~~In all cases~~, ~~the arrow or pointy part of the 'T' should point towards~~ (-)		**2A, 35V: (D1)
			**Schottky,1A: (D2)
			**TVS, PMDS case: (D3, D4, D5)

	*PTC Fuses (No polarity, 200mA, 15V (Markings:C)		*PTC Fuses (No polarity, 200mA, 15V; Markings:C)
	**Reader power lines (~~F2,F3, F4, F5~~)		**Reader power lines (D2-D11)

	*PTC Fuses (No polarity, 1.5A)		*PTC Fuses (No polarity, 1.5A)

2013-07-21T05:32:25Z

Detailed Instructions

← Older revision		Revision as of 22:32, 20 July 2013
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	**In all cases, the arrow or pointy part of the 'T' should point towards (-)		**In all cases, the arrow or pointy part of the 'T' should point towards (-)

	*PTC Fuses (No polarity, ~~200ma~~, 15V (Markings:C)		*PTC Fuses (No polarity, 200mA, 15V (Markings:C)
	**Reader power lines (F2,F3)		**Reader power lines (F2,F3, F4, F5)

			*PTC Fuses (No polarity, 1.5A)
			**(F1)

	'''Integrated circuits'''		'''Integrated circuits'''

2013-07-21T05:30:47Z

Detailed Instructions

← Older revision		Revision as of 22:30, 20 July 2013
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	**(IC1, stripe goes down when looking at board from top)		**(IC1, stripe goes down when looking at board from top)

	*MCP34063 buck power regulator		*MCP34063 buck power regulator(IC1)
	**(~~U$1, stripe goes to the right of PCB~~)

	*ULN2803 8-channel driver array(IC3)		*ULN2803 8-channel driver array(IC3)

2013-07-21T05:28:57Z

Detailed Instructions

← Older revision		Revision as of 22:28, 20 July 2013
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	**(U$1, stripe goes to the right of PCB)		**(U$1, stripe goes to the right of PCB)

	*ULN2803 8-channel driver array		*ULN2803 8-channel driver array(IC3)
	**(~~ULN1, pin 1 mark goes towards top left of PCB~~)

	*AT24C 128KB EEPROM		*AT24C 128KB EEPROM(IC7)
	**(~~U3, pin 1 mark goes towards bottom right of PCB~~)

	*DS1307 real-time clock IC		*DS1307 real-time clock IC
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	*33uF (C2)		*33uF (C2)
	*22uF, 10V (C3)		*22uF, 10V (C3)

	*33uF, 16V
	**(C2, polarity stripe towards top of PCB)

	'''Inductors'''		'''Inductors'''

2013-07-21T05:17:39Z

Detailed Instructions

← Older revision		Revision as of 22:17, 20 July 2013
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	'''Electrolytic caps (observe polarity stripe)'''		'''Electrolytic caps (observe polarity stripe)'''
	*100uF, ~~25V~~		*100uF, 35V(C1)
	**(~~C1, polarity stripe towards right side of PCB~~)		*33uF (C2)
			*22uF, 10V (C3)

	*33uF, 16V		*33uF, 16V

2013-07-19T20:58:27Z

Detailed Instructions

← Older revision		Revision as of 13:58, 19 July 2013
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	'''6.''' Solder in the MOV (R6). It has no polarity. Put the fuse into the fuse holder clips (F1) and solder it from top and bottom.		'''6.''' Solder in the MOV (R6). It has no polarity. Put the fuse into the fuse holder clips (F1) and solder it from top and bottom.
	<br>		<br>
	'''7.''' Solder in the battery holder, observing the polarity marks ~~and~~ part outline on the PCB silkscreen.		'''7.''' Solder in the battery holder, observing the polarity marks as well as the part outline on the PCB silkscreen.
	<br>		<br>
	'''8.''' Install all 8 relays. Use tape to hold them in position, and tack down 1 pin each to make sure they're seated all the way before soldering.		'''8.''' Install all 4 relays. Use tape to hold them in position, and tack down 1 pin each to make sure they're seated all the way before soldering.
	<br>		<br>
	'''9.''' Install the 5mm power terminal (~~X35~~).		'''9.''' Install the 5mm power terminal (POWER-IN).
	<br>		<br>
	'''10.''' Install the Arduino pin headers. Use an Ethernet or other shield to aid alignment from the top if desired.		'''10.''' Install the Arduino pin headers. Use an Ethernet or other shield to aid alignment from the top if desired.
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	<br>		<br>
	<br>		<br>
	[[Open Access ~~Mega~~ Testing and burn-in]]		[[Open Access Standard Testing and burn-in]]

2013-07-19T19:47:25Z

Detailed Instructions

← Older revision		Revision as of 12:47, 19 July 2013
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	**(C2, polarity stripe towards top of PCB)		**(C2, polarity stripe towards top of PCB)

	'''~~Inductor~~'''		'''Inductors'''
	*~~150uH~~ (L1, no polarity)		*15uH (L1, no polarity)
	*1uH (L2, no polarity)		*1uH (L2, no polarity)

	'''Crystal ~~(observe polarity/pin 1 mark)~~'''		'''Crystal '''
	*32.768Khz RTC crystal (Q1, dot towards ~~bottom of PCB~~, chisel-point towards ~~top~~)		*HC48U-v crystal(XL1)
			*32.768Khz RTC crystal (XL2, dot towards exterior, chisel-point towards interior; observe polarity/pin 1 mark)

	'''Switch'''		'''Switch'''
	*5mm tactile switch, NOT reflow solderable.		*5mm tactile switch, NOT reflow solderable.
	**Place and solder by hand AFTER reflow. (Next to ~~JP2~~)		**Place and solder by hand AFTER reflow. (Next to JP4)
	<br>		<br>
	'''3.''' Finish placing all parts and straighten as needed. Reflow solder using hotplate or oven, using an appropriate process.		'''3.''' Finish placing all parts and straighten as needed. Reflow solder using hotplate or oven, using an appropriate process.