Finding LCD 16x2 Module

  • Added 1x 2N2222A as Q1
  • Added 1x 1N4001 - 8363396 as D8
  • Added 1x Generic Resistor as R1
now connect all of them together
Here are the net connections for the relay driver circuit:

Table


NetConnections
RELAY_CTRLU1:GPIO4, R1:1, Q1:Base
RELAY_COIL+K1:Coil+, D8:Cathode
RELAY_COIL-K1:Coil–, Q1:Collector, D8:Anode
GNDU1:GND, Q1:Emitter
Let me know if you’d like to apply these changes.
  • Connected U1:D4 to R1:P1
  • Connected R1:P1 to Q1:B
  • Connected K1:Coil-1 to D8:K
  • Connected K1:Coil-2 to Q1:C
  • Connected Q1:C to D8:A
  • Connected U1:GND to Q1:E
U2
U1
U3 P4 - LCD1 RS
U3 P5 - LCD1 R/W
U3 P0 - LCD1 D4
U3 P4 - LCD1 RS
U1 TX2 - U2 RXD
U1 GND - U3 VSS
U1 D21 - U4 SDA
U1 3V3 - U3 VDD
U1 GND - U3 VSS
U1 GND - U3 VSS
U1 D22 U4 SCL - U3 SCL
U1 3V3 - U4 VCC
U1 GND - U3 VSS
U3 P3 - LCD1 D7
U1 D22 - U3 SCL
U1 TX2 - U2 RXD
U3 P6 - LCD1 E
U1 GND - U3 VSS
U3 P6 - LCD1 E
U3 P5 - LCD1 R/W
U1 3V3 - U3 VDD
U1 D21 - U3 SDA
U1 D4 - R1 P1
U3 P2 - LCD1 D6
U3 P2 - LCD1 D6
K1 Coil-2 - Q1 C
K1 Coil-2 - Q1 C
U1 GND - U3 VSS
U1 3V3 - U3 VDD
U1 D22 U3 SCL-U4 SCL
U3 P7 - LCD1 LED(+)
U1 D4 - R1 P1
U1 3V3 - U3 VDD U4 VCC
K1 Coil-1 - D8 K
U1 D21 - U4 SDA
U3 P3 - LCD1 D7
U1 3V3 - U3 VDD
K1 Coil-2 - Q1 C
U3 P7 - LCD1 LED(+)
U3 P1 - LCD1 D5
K1 Coil-1 - D8 K
U1 GND - U3 VSS
U1 D21 - U3 SDA
U3 P1 - LCD1 D5
U1 GND - U3 VSS
U1 RX2 - U2 TXD
U1 3V3 - U4 VCC
U1 D4 - R1 P1
U1 RX2 - U2 TXD
U3 P0 - LCD1 D4
U3
Q1
sublayout1
LCD1
R1
Resistance
500 Ω
K1
U4
Not Recommended for New Designs
D8

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