Stijn Coenen

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  1. Resistor Decade Box — 5 comments
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  3. IN-14 Nixie Clock — 2 comments
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  5. ESR-Meter – Update — 2 comments

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Temperature Controller

In school I got the assignment to make a temperature control with a Omron E5CK. A datasheet of this PID controller can be found here: Link

The idea is to simulate a process in an aluminium block. For this we use the following elements:

-J-type thermocouple

-50W heating element

-Digital PID-controller type E5CK Omron

-Volt meter to measure the output value (0-100% / 0-10V)

-A Peltier element (to create interference.)

We build everything inside a suitcase.

We had to make a small book of this. You can download that here: Link (Dutch)

 

A couple of pictures:

The PID controller:
GIP
The process:
GIP

The circuit board with the peltier controller and 2 channel 0-10V dimmer/power control.
GIP

GIP

The saw tooth from the 0-10V dimming circuit.
GIP
GIP

Everything was build in a frame
GIP
And the frame was then build in a suitcase:
GIP

Pen box mod

I had a boring plexi pen box on my desk. One day I thought it would be nice if it gave blue light, so I sanded the edges where I wanted to see light and put some leds underneath.
LED verlichte pennen houder
LED verlichte pennen houder
LED verlichte pennen houder
LED verlichte pennen houder

Galvawisp

My pic-programmer could not program “in circuit”. Therefore I decided to make a new programmer. After some searching I found the galvawisp programmer on picbasic.nl. This programmer seemed perfect for my needs. Plus all the parts where easy to get.

Pictures:
galvawisp
galvawisp

Tube Amp – Update

Today I bought the transformers that I’m going to use as output transformers.
transfo
transfo

Tube Amp – Update

Component layout:

opstelling

The connections:
opstelling

Mains switch, Power connector, 2 speaker connectors, RCA connector

 

Volume knob:
volumeknop
The power transformers.
transfos

The left transformer provides 200VAC. The right transformer provides 15VAC glow voltage.

Winamp Remote Control

I use my pc to play music while I’m working. But the pc is not on the same desk, so I had to get up and walk to the pc to change songs. Therefore I made a remote control.

The buttons:
Winamp remote control
The circuit:
Winamp remote control schema

The software: Download.

PCB Drill

I am working on a drill press to drill my PCBs. For the standard I found and restored an old drill press. The drilling machine will be the one I already have in use. The speed will be controlled by an diy PWM speed controller. Circuit: http://www.circuitsonline.net/circuits/view/17

 

Pictures PWM controller:
Printboormachine PWM regeling
Printboormachine PWM regeling
Printboormachine PWM regeling
Printboormachine PWM regeling

PCB Drill – Update 1

Today I finished the restoration of the drill standard and I’ve mounted some leds on it:

Printboormachine
Printboormachine
Printboormachine

CNC drill/mill machine V2 – Mechanical Part – Update

I have had a bearing holder for my Z-axis made (I cant drill such large holes here at home):
z-as
lagerhouder
Thanks Jaak!

 

I went to a metal store to buy a piece of aluminum bar (30*10*2000mm). I used this bar to attach the Z-axis to the X-axis. Therefore I also gotten a aluminum plate.
aluplaat

I’m also thinking how I’m going to build the X-axis. I think it is best that I make a metal frame with the guide rails mounted to it. Here is a drawing of what the frame is going to look like:
tekening x-as

CNC drill/mill machine V2 – Mechanical Part – Update

Today me and my dad made a part of the X-axis construction from steel square pipe.

x-as
Better pictures will follow when I get the bearings ready.

I made some drawings of a table where the cnc will be on.tafel
tafel

Today me and my dad made a part of the X-axis construction from steel square pipe.

x-as
Better pictures will follow when I get the bearings ready.

I made some drawings of a table where the cnc will be on.tafel
tafel