HardLabs

Relay

anno73·IoT-Universal-Socket-Strip·hardware/relay/relay.kicad_pcb

Relay PCB layout, top view — open source AVR/Arduino board by anno73

About the Relay PCB

Relay is an open source AVR/Arduino PCB design by anno73, published on GitHub. It is a 2-layer board measuring 65.5 × 22 mm, with 19 components from 14 distinct parts.

Its main chip is the ATTINY85-20SU, from the AVR/Arduino family. Other key parts include the ATTINY85-20PU. By type, the board carries 6 resistors, 4 connectors, 2 ICs, 2 transistors, 2 diodes and 1 LED.

It belongs with the iot & wireless designs in this gallery.

From the project

Ever wanted to have a customizable IoT enabled socket strip? Now you can... This project enhances an Ehmann Universal Socket Strip like the 8-fold strip 0200x00082301 with custom relay controller and dedicated switching PCBs for each of the sockets. The controller PCB is ESP8266 based, ideal for integration into your home IoT installation via e.g. MQTT.

As of (AN2519)[http://ww1.microchip.com/downloads/en/Appnotes/AN2519-AVR-Microcontroller-Hardware-Design-Considerations-00002519B.pdf]

Add pull up resistor to RESET-Vcc (>10k)

Add cap between RESET-GND (100nF) - only if not using DebugWIRE

V Add resistor between RESET-ExternalRESETheader

Main components on the Relay

ATTINY85-20SUATTINY85-20PU

Relay bill of materials (BOM)

19 components, 14 distinct parts.

QtyPartRefs
1
ATTINY85-20SU
U1
1
ATTINY85-20PU
U2
2
BC817-40
Q1, Q2
2
GS3
J1, J2
1
CONN_02X04
J3
1
CONN_01X04
J4
1
HFE20-1-x-1Z-L2
RL1
1
RED
LED1
2
1N4007
D1, D2
1
1uF
C1
1
1k2
R1
2
3k3
R2, R3
2
100k
R4, R5
1
10k
R6

Relay design files

The KiCad project lives in the anno73/IoT-Universal-Socket-Strip repository on GitHub; these links point at the commit this page was built from.

Relay: common questions

What microcontroller does the Relay use?

The Relay is built around the ATTINY85-20SU, from the AVR/Arduino family.

How big is the Relay PCB?

The Relay measures 65.5 × 22 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Relay?

19 components, from 14 distinct parts. The full bill of materials is listed on this page.

Where can I download the Relay design files?

From the anno73/IoT-Universal-Socket-Strip repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Relay design in my own project?

The repository has no license, so all rights stay with anno73. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Relay without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

More boards in IoT-Universal-Socket-Strip

Similar boards