Shared Projects by fisher0251

Shared Projects by fisher0251

555 LED Flasher

2 layer board of 0.95 x 0.96 inches (24.1 x 24.5 mm)
Uploaded: September 13th 2015
Shared: September 14th 2015
Total Price: $4.55

Simple 555 timer circuit to flash 2 LEDs. R1. R2 and C1 set the timer frequency and duty cycle. R3 and R4 limit the current through each LED.

Simple 555 timer circuit to flash 2 LEDs. R1. R2 and C1 set the timer frequency and duty cycle. R3 and R4 limit the current through each LED.

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LED Driver Rev. A

2 layer board of 2.30 x 1.30 inches (58.4 x 33.0 mm)
Uploaded: July 3rd 2015
Shared: July 3rd 2015
Total Price: $14.90

LED driver board for the MAX6971. This chip operates as a shift register, so the boards are designed to connect together in series with DOUT of the earlier board connected to DIN of the later.

The chip can be enabled with a PWM signal on ~OE to dim the LEDs. To permanently enable the chip, sol…

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LED driver board for the MAX6971. This chip operates as a shift register, so the boards are designed to connect together in series with DOUT of the earlier board connected to DIN of the later.

The chip can be enabled with a PWM signal on ~OE to dim the LEDs. To permanently enable the chip, sol…

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Omnibot control board, Rev. A

2 layer board of 3.94 x 3.15 inches (100.0 x 80.0 mm)
Uploaded: June 15th 2015
Shared: June 15th 2015
Total Price: $62.00

ATMEGA328P onboard control for 3 DC brushed motors. This is my version of a control board for this project from Make Magazine. It uses dual H-bridges ICs (SN754410) to drive each motor (channels are doubled for up to 2A continuous current per motor, 4…

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ATMEGA328P onboard control for 3 DC brushed motors. This is my version of a control board for this project from Make Magazine. It uses dual H-bridges ICs (SN754410) to drive each motor (channels are doubled for up to 2A continuous current per motor, 4…

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DCDC Buck Converter USB Charger

2 layer board of 2.15 x 1.60 inches (54.6 x 40.6 mm)
Uploaded: June 7th 2015
Shared: June 8th 2015
Total Price: $17.20

I designed this as a universal USB charger for phones and tablets. Vin = +8-12V, Vout = +5V @ 1A. I'm using one or two 8-AA battery packs for Vin depending on how much current is required at the output.

It uses the LM2675-ADJ from TI as U1. By choosing the appropriate inductor L1, input and ou…

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I designed this as a universal USB charger for phones and tablets. Vin = +8-12V, Vout = +5V @ 1A. I'm using one or two 8-AA battery packs for Vin depending on how much current is required at the output.

It uses the LM2675-ADJ from TI as U1. By choosing the appropriate inductor L1, input and ou…

Show full description

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