zl0n/component-tester-oled

Component Tester in a Keychain

Component Tester OLED (Keychain)

Sending PCBs for fabrication

1. Download the Gerber Files
2. Goto PCBWAY for sending files for fabrication
3. Upload GERBER_FILES.zip using the +Add Gerber File option
4. Select Quantity of PCBs
5. Select your desired soldermask color.
6. Select your shipping method on thr right
7. Click Save to Cart and Checkout

Bill of Materials

Qty	Designator	Package	Value	Description	MANUFACTURER PART NUMBER
1	C2	0805	100nF	CAP CER 0805 0.1UF 100V X7R	C0805C104K1RECAUTO
1	C3	0805	1nF	CAP CER 1000PF 50V C0G/NP0 0805	C0805C102J5GACTU
1	C4	0805	10nF	CAP CER 0805 10NF 100V X7R	C0805X103K1RAC3316
1	C5	1206	10uF	CAP CER 10UF 25V X5R 1206	C1206C106M3PACTU
2	C6, C7	0805	22pF	CAP CER 22PF 50V C0G/NP0 0805	C0805C220J5GACTU
2	R1, R2	0805	5.1kΩ	RES 5.1K OHM 5% 1/4W 0805	RK73B2ATTD512J
1	R3	0805	27kΩ	RES SMD 27K OHM 1% 1/8W 0805	CRG0805F27K
1	R6	0805	10kΩ	RES 10K OHM 1% 1/4W 0805	RNCP0805FTD10K0
1	R7	0805	3.3kΩ	RES 3K3 OHM 1% 0805	CRGCQ0805F3K3
3	R8, R10, R12	0805	680Ω	RES SMD 680 OHM 0.1% 1/4W 0805	ERJ-PB6B6800V
3	R9, R11, R12	0805	470kΩ	RES SMD 470K OHM 0.1% 1/4W 0805	ERJ-PB6B4703V
1	U1	TQFP32	ATMEGA328P-AU	IC MCU 8BIT 32KB FLASH 32TQFP	ATMEGA328P-AUR
1	U2	SOT23-3	LM4040	IC VREF SHUNT 2% SOT23-3	LM4040EIM3X-2.5/NOPB
1	X1	TSX-3225	16MHz	CRYSTAL 16.00 MHZ 9PF SMD	TSX-3225 16.0000MF09Z-AC0
1	J1	CUI_UJC-HP-3-SMT-TR	USB C (Power Only)	USB JACK, C TYPE, POWER ONLY, 6	UJC-HP-3-SMT-TR
1	TEST	12MM PTH TACTILE SWITCH	-	SWITCH TACTILE SPST-NO 0.05A 12V	PTS125SM43-2 LFS
1	DISPLAY	-	-	OLED 0.96" 4 PIN I2C Interface	Amazon
3	1, 2, 3	2MM BANANA JACK FEMALE	-	-	Amazon

Uploading Firmware

Hardware Setup

Using a USBasp programmer connect it to the ICSP Header on the board. Refer the following pinout for connections -

PCB Bottom Side

Software Installation

NOTE: AVRDUDE must be installed in your computer in order for the following instructions to work.

Open Terminal/ Command Prompt in your system, navigate to folder's location with above files and run the following commands -

Uploading the .HEX file and .EEP file to MCU

avrdude -c usbasp -B 20  -p m328p -P usb -U flash:w:./TransistorTester.hex:a -U eeprom:w:./TransistorTester.eep:a

Setting the FUSES

avrdude -c usbasp -B 200  -p m328p -P usb  -U lfuse:w:0xe2:m -U hfuse:w:0xd9:m -U efuse:w:0xfc:m

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References

• Schematic
• Original Transistor Tester