![]() ![]() Ensure the wires are long enough to feed out to the new Arduino controller board. ![]() Brasso descriptionĤ) Epoxy (I used Araldite quick set) the 7 segment display in position over the windowĥ) Spray paint the surrounds of the 7 segment display (my window ended up being too big - so I had to include this step).ħ) Wire up the 7 segment display and 2 push buttons (I used a 14 way ribbon, 10 for the 7 segment display and 2 each for the switches).Ĩ) Reassemble the washing machine PCB into its plastic cage and cover. Brasso is quite abrasive but it does produce a nice optically clear window if done well. (Use a scalpel or a section of hobby knife blade).ģ) Use 1200 grit emery then "Brasso" to polish the window. The technique I used was as follows:ġ) Mark out the position and shape of the 7 segment display on the back.Ģ) Gently scrape the paint of the back of the polycarbonate to reveal a clear 'window'. I did this as carefully as I could but the results are not perfect. If you rub the white paint off a 'window' can be made in the panel. ![]() The front panel is a strip of polycarbonate (or something very similar) The decals are printed on the reverse and then an application of white paint provides an opaque background. Having decided to integrate the timer into the front panel I prepared the front panel by drilling 2 holes for the buttons and clearing a window for the 7 segment display. These smooth out the input and output of the voltage regulator.ġ x 330Ohm for the 7 segment common cathode displayĢ x 10kOhm for each of the 2 push buttons to 'pull' the inputs to ground. See attached data sheet and the following link to Jaycar.Ĥ) A 7 segment display (including a dot/decimal point) also bought from Jaycar. To provide a 5VDC supply for the project. The relay has a 500Ohm coil so should draw 5/500 Amps = 0.01A = 10mA which is fine for an Arduino output.Īttached is the manufacturers pdf and here is where I bought it. This ensures that from an electrical perspective I am not altering the function of the start button, I am merely duplicating it. I used a tiny reed relay to 'parallel in' to the start switch. If you really want to keep costs down you could try making your own clone by following the instructions here:įreetronics also sell the ATmega controller (with bootloader) as a separate leaded chip. I picked one up from the Sydney maker faire last Saturday. It is the 1st time I've used this product and I like the idea it has a piezo buzzer already installed on the board. I used a Leostick from Freetronics I think most boards would run this project. Step 1: The Unmodified Washing Machineġ) Arduino or Arduino compatible micro controller. Please watch the video to show how it works in practice. Whilst my instructable has been applied to the machine that I own (a Miele W310) I believe that many modern electronic machines rely on a 'start' button to energise the machine programme so it should be transportable to your own washing machine with a few modifications. Rather that having the wet clothes sitting in the washing machine for several hours, a delay timer allows the machine to come on, say at 5am and be finished by the time your up. ![]() FYI and comparison if you are still on an old style meter then the current tariff is 25c/kWh all day every day.Ģ) To be able a load of washing to be completed by the time I get up in the morning. However, each year there are less and less of those types and ToU metering will become ubiquitous over time. This project is fairly useless if you are still on the old style of 'whirling disc' single tariff meters. The prices are in Australian cents and include tax.Īs you can see it is considerably more expensive to use "Peak" electricity as opposed to "Off Peak". These are prices effective from 15th Sept 2014 for Origin Energy supplied via AusGrid. Shoulder = 7am-2pm & 8pm to 10pm Mon-Fri & 7am to 10pm weekends 20/kWh This means that I am charged in 3 different bands which are "Peak", "Shoulder" and "off Peak" The details are as follows: The electricity supply to my home is via a "Time of Use" or ToU meter. This is to provide a cost saving and a convenience.ġ) To be able to take advantage of off peak electricity. The aim of this project is to be able to delay the start of the washing machine by a few hours. The timer is operated with the very popular Arduino micro controller. Hello, and welcome to my instructable for a washing machine countdown timer. ![]()
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