Wireless beer fridge temperature logger

[themadhippy]

3 33k's in parallel will get you 11k,and dont be silly paying 40p for 1 resistor from craplins when you can get a pack of 100 delivered for 20p more.

[Andy]

Aren't all those components on board the 8266 breakout board? I used zero resistors/capacitors when putting mine together.

[Fil]

Cheers TMH you inspired me to google a bit and find a combo of resistors i have in 100x + quantities unlike the 33k which i have 9x of

I may have a drink and plug it up 'Commando' style then Andy I do that with the arduino boards, guess im just a bit nervous of the new tech

I will be happy when i have copied your project Andy.. then i can blatantly lift all your work and substitute my rf arduino project for your sensor as a data source hehe...

i will stumble through eventually.. may even look at porting the whole thing onto the esp8266??

[Belter]

Can you take the pic programming for the stc1000+ and rejig it for a esp8266? I like the functionality of the stc but want to elaborate and monitor everything via 1 wire on one page including the rest of the brew house.

[BenB]

Those 10k resistors are almost certainly pull up / pull down resistors to prevent the inputs oscillating around unless there's a signal. In which case 10k / 5k who cares, the amps passed will be minimal.... It's basically just providing a low ampage "default" in the absence of an input signal.
That's what I reckon from years playing with PICS anyway.... even if some of those have internal pullups.

[Fil]

Cheers Benb thats reassuring, once the things wired up and im coding i will be on more familiar ground.

@Belter, in theory, sure

[Graham]

Have any of you tinkerers come across an adaptor to convert a surface mount SO8 package to 0.1" pitch DIL format to facilitate breadboarding? I want to use a Maxim DS2482 1-wire master to interface DS18S20s to a PIC for a temperature controller that I am planning, so as to save all the processor-greedy timing and control stuff for the bloody awful Maxim 1-wire bus. The DS2482 only comes in an SO8 package. Adaptors, in a wide variety of formats and sizes, used to abound years ago, but search until I am blue in the face, I cannot find one. These days commercial companies go straight from circuit to PCB, with no intermediate breadboarding stage; the first PCB is the breadboard, because it is cheaper and more reliable than getting a wireman to assemble a prototype. So I suppose there is little demand for adaptors these days. The DS18S20 seems to be a cheap way of getting reasonable accuracy and resolution, but the delay in taking a measurement may promote instability in PID-type stuff, particularly if there are several sensors on the bus, so I may have to go the PT100 route in the end, but I'd like to give the DS18S20 a go first.

[themadhippy]

Have any of you tinkerers come across an adaptor to convert a surface mount SO8 package to 0.1" pitch DIL format to facilitate breadboarding?

cpc do stock em,but buggered if i can find em ,however good ole ebay if you can wait for the slow boat from china http://www.ebay.co.uk/itm/20PCS-SOP8-SO ... 1607467082

[Belter]

http://m.ebay.co.uk/itm/New-DS18B20-Mea ... 2934229004

???

[Graham]

Have any of you tinkerers come across an adaptor to convert a surface mount SO8 package to 0.1" pitch DIL format to facilitate breadboarding?

cpc do stock em,but buggered if i can find em ,however good ole ebay if you can wait for the slow boat from china http://www.ebay.co.uk/itm/20PCS-SOP8-SO ... 1607467082

Thanks Themadhippy

E-Bay, hum. That'll be a first for me. I now have to learn how to use it -- At least it's not an auction, bet I still cock it up though.

[Fil]

Have any of you tinkerers come across an adaptor to convert a surface mount SO8 package to 0.1" pitch DIL format to facilitate breadboarding? I want to use a Maxim DS2482 1-wire master to interface DS18S20s to a PIC for a temperature controller that I am planning, so as to save all the processor-greedy timing and control stuff for the bloody awful Maxim 1-wire bus. The DS2482 only comes in an SO8 package. Adaptors, in a wide variety of formats and sizes, used to abound years ago, but search until I am blue in the face, I cannot find one. These days commercial companies go straight from circuit to PCB, with no intermediate breadboarding stage; the first PCB is the breadboard, because it is cheaper and more reliable than getting a wireman to assemble a prototype. So I suppose there is little demand for adaptors these days. The DS18S20 seems to be a cheap way of getting reasonable accuracy and resolution, but the delay in taking a measurement may promote instability in PID-type stuff, particularly if there are several sensors on the bus, so I may have to go the PT100 route in the end, but I'd like to give the DS18S20 a go first.

How frequently do you want to refresh the temperature readings?
Dont think its gonna be a problem unless your querying probes more than once per second, iirc 750m/s?? (too lazy to check this) is ample recharge time for the probes.

as for the code overhead/execution delay, you could farm all the temp gathering and flagging off to a 2ndary processor and employ it as a temperature server.
so you can code like :

if new temp available
do stuff
else
do different stuff

[Fil]

FWIW postie brought a new toy, http://www.ebay.co.uk/itm/321747368097? ... EBIDX%3AIT today..

So i can proceed without worrying about resistors n the like.. or can i?? documentation on the board is scant or perhaps im entering below the 'what u need to know level' either way it was a bit of a struggle getting to the hello world equivalent... No doubt Andy is up and running with his similar board me not so quickly..

but if anyone else is struggling like i was..

took me about an hour to sus out that in order to flash the device with the arduino ide the following operation is needed,
1) plug into the usb on your puter and turn off
2) flick dip switch 8 to on
3) turn on the board
4) flick dip switch 8 to off Finally you can flash the esp8266 ph-F*kkin-eww!!!
scrub 1 hour more like 2 n a 1/2!!!!

and within the arduino ide select the esp8266-12 board com port speed @115200baud and a 80mhz frequency..

Dont chase your tail looking for the esp programmer not needed with the 1.6.5 ide release.... HONEST!!


now have an esp8266 server running using the example sketches

next step to rip off Andy's project ....

[Andy]

I received one of those Dev boards in the post today. Am off work with bad back so no tinkering yet.

[Fil]

will keep my fingers crossed for a speedy recovery from the back problems.. had a wee twinge a few years back and it made me miserable as sin..

if i find any useful docs on this board i will post links here.. so far ive drawn a blank tho..

[Andy]

will keep my fingers crossed for a speedy recovery from the back problems.. had a wee twinge a few years back and it made me miserable as sin..

Ta! It was so bad yesterday that I couldn't stand up and had to crawl to move around. Got friction burns on my knees now

Luckily managed to get some meds delivered and they got me back up on my feet before bedtime.

And here's some info about the board http://scottsnowden.co.uk/esp8266-devel ... d-arrived/