gajdipajti / tiny-usb-switch

A small circuit to powercycle an USB device from serial.

tiny-usb-switch

A small circuit to powercycle an USB device from serial.

Contents

• tiny-schematic - KiCad schematic
• tiny-switch - ATTinyx5 code (currently optimized for ATTiny25) ATTinyCore
• tiny-script - Wrapper Bash script.

BOM

All the materials were bought from a local supplier: Robotron Electronika - pdf catalogue

Parts list

• 1x J2: USB-A socket - 249 HUF/piece
• 1x J1: USB-B socket - 498 HUF/piece
• 1x H25PR050 proto board - 490 HUF/piece
• 1x K1: NA5W-K relay - 888 HUF/piece
• 1x U1: ATTINY25-20PU - 699 HUF/piece
• 1x DIL8 socket - 45 HUF/piece
• 2x D2: GLED or D1: RLED - 20 HUF/piece
• 2x R1&R2: 1k resistor - 20 HUF/piece
• 1x Q1: NPN transistor - 75 HUF/piece
• 1x J1: male pin header - 199 HUF/piece
• 1x C1: 100nF 50V +/- 10% capacitor - 149 HUF/piece

In table format (in hungarian)

Sorszám	Termékkód	Termék	Egységár (Nettó)	Egységár (Bruttó)	Mennyiség	Összesen (Nettó)	Összesen (Bruttó)
1	53-07-97	USB-A aljzat 90°	196.06 HUF	249 HUF	1	196.06 HUF	249 HUF
2	53-07-96	USB-B aljzat 90°	196.06 HUF	249 HUF	2	392.12 HUF	497.99 HUF
3	75-00-15	H25PR050	385.82 HUF	489.99 HUF	1	385.82 HUF	489.99 HUF
4	49-00-67	NA 5W-K	699.21 HUF	888 HUF	1	699.21 HUF	888 HUF
5	42-09-84	ATTINY25-20PU	550.4 HUF	699.01 HUF	1	550.4 HUF	699.01 HUF
6	51-02-23	DIL8 lemezes Assmann	35.43 HUF	45 HUF	1	35.43 HUF	45 HUF
7	46-01-09	5XC zöld LTL307GE	15.75 HUF	20 HUF	1	15.75 HUF	20 HUF
8	46-01-07	5XC piros LTL307EE	17.32 HUF	22 HUF	1	17.32 HUF	22 HUF
9	02-06-13	1 KOhm 0.4W 1% RM2	7.87 HUF	9.99 HUF	2	15.74 HUF	19.99 HUF
10	21-00-78	2N 3904G *N	59.06 HUF	75.01 HUF	1	59.06 HUF	75.01 HUF
11	53-03-25	40G Stiftleiste	156.69 HUF	199 HUF	1	156.69 HUF	199 HUF
12	10-01-45	100 nF 50V ±10% X7R RM1-Tape	117.32 HUF	149 HUF	1	117.32 HUF	149 HUF
						Nettó összesen	Bruttó összesen
						2641 HUF	3354 HUF

USB-to-Serial

I used the CED007700 - USB to RS232 TTL PL2303HX device. It won't work on windows.

Images