Week12 : Output Devices

Group Work

Group assignmet is here

Cartridge Heater with SSR(Solid State Relay)

SSR for Final Project

In the final project that I'm thinking, cartrige heater is needed. SSR is usefull for controlling temperature of cartrige heater. Because it can turn off/on with low level of voltage.
I bought a SSR as below at Amazon.

https://www.amazon.co.jp/gp/product/B00IIDYIF4/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

Cartridge Heater

Following picture is a cartridge heater that I bought from MISUMI that is Japanese manufacturer. MiSUMI realized Make to Order(MTO), they can provide the various customization. About 8×1022 kinds of parts that can be ordered with MTO, including variations in size.

https://jp.misumi-ec.com/vona2/detail/110300386430/?HissuCode=MHK6.25-25.4-V120-W80

Input -> Output

I made input device that can measure the high temperature by using thermocouple last week. This week I will make a electronic board to contral cartridge heater(output) by using SSR and temperature sensor I made.

Design



Pull up register is only need for writing program. After witing program it should be removed.

Control Temperature of Heat Block

I wrote the program that control the temperature of heat block at 50 ℃.


Red indicator means the switch is on.
It adjust the temperature by switch turn on and off. When the temperature exceeds 50 ℃, the switch turns off,it falls below 50 ℃, the switch turns on.

Needed parts

  1. ATTiny 45 microcontroller (1 piece)
  2. Capacitor 1uF (1 piece)
  3. Capacitor 10uF (2 piece)
  4. Resistor 10K ohm (4 piece)
  5. Resistor 1K ohm (2 piece)
  6. Resistor 500 ohm (2 piece)
  7. Resistor 0 ohm (3 piece)
  8. 6 pin header (1 piece)
  9. 6 pin header for FTDI (1 piece)
  10. Regulator 3.3V(1 piece)
  11. Amplifier　Max31855(1 piece)
  12. Thermocouple Type K(1 piece)
  13. SSR(1 piece)
  14. Cartridge Heater(1 piece)

LCD

LCD

Following picture is pin number of LCD and pin configuration that is described in datasheet.


I tried LCD with Arduino at first.
To make it easily, I used LiquidCristal lbr of Arduino IDE.

Next, I made a circuit bord for LCD. It is not linkd with temperature sensor, only display letters.




Needed parts

  1. ATTiny 44 microcontroller (1 piece)
  2. Capacitor 1uF (1 piece)
  3. Resistor 10K ohm (1 piece)
  4. Resistor 0 ohm (10 piece)
  5. 6 pin header (1 piece)
  6. 6 pin header for FTDI (1 piece)
  7. Resonator　20MHZ(1 piece)
  8. LCD 67-1781-ND (1 piece)

Stepper Moter

Stepper Moter

I also made stepper motor board reference to Niel's bipolar example.




I wrote program for controling stepper motor with Arduino IDE.

For final project, the drill was attached to stepper motor. That will be feed unit. It worked well.


Needed parts

  1. ATTiny 44 microcontroller (1 piece)
  2. Capacitor 1uF (3 piece)
  3. Capacitor 10uF (2 piece)
  4. Resistor 10K ohm (1 piece)
  5. Regulator 5V (1 piece)
  6. 6 pin header (1 piece)
  7. 4 pin header (1 piece)
  8. Hbrige A4953ELJTR-T(2 piece)
  9. stepper motor ＳＭ－４２ＢＹＧ０１１(1 piece)
  10. dc jack(1 piece)

Files(all file-> zip)

Files is here.