Shared Projects by serisman

$0.90 each ($2.70 for 3)

https://bitbucket.org/serisman/pcb-ina219-breakout

$0.20 each ($0.60 for 3)

https://bitbucket.org/serisman/pcb-ws2812b-breakout

$2.62 each ($7.85 for 3)

https://bitbucket.org/serisman/pcb-camaro-line-lock

1-wire, 4-bit, using 74HC595 Shift Register

$1.20 each ($3.60 for 3)

Use the LiquidCrystal_SR1W code from the ‘New LiquidCrystal’ Arduino library:

• https://bitbucket.org/fmalpartida/new-liquidcrystal/src/

Component: [Sizes] Values (description)

• U1: [SOIC-16N] 74HC595 (the shift register)
• VR1: [3296W, 3362P (or similar)] 10k (for contrast control)
• C1: [0805] 0.1uF (decoupling capacitor)
• C2,C3: [0805] 2.2nF (part of the 1-wire input circuit)
• D1: [SOD80 (~1206)] LL4148 (or similar) (part of the 1-wire input circuit)
• Q1: [SOT-23] NPN (~MMBT2222A or similar) or N-Channel (~2N7002 or similar) (used to allow software control of the backlight LED)
• R1: [0805] 1k-10k (used to limit the current through the base/gate of Q1)
• R2,R3: [0805] 1.5k (part of the 1-wire input circuit)
• R4: [1206] ~100 ohm (used to limit the current through the backlight LED)