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Forum Index : Microcontroller and PC projects : Playing with the ESP’s
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Quazee137 Guru  Joined: 07/08/2016 Location: United StatesPosts: 600 |
Here is a bit of fun I've had playing with ESP's and ESP Easy. The ESP-07 and 12's are easy to get the 4 relays working. While waiting for my burner for them (very slow boat from CHINA).  I went back to play with the ESP-01's. I found out that you can turn off serial port freeing up Tx = GPIO 1, Rx = GPIO 3 now I can use them to drive the relays. Well except the startup chatter will fire off GPIO1. Not good !!! But wait what if the relays had a slow start function. Then the ESP-01 can power up and not affect them. So here is the basic concept.  I liked the circuit from Grogster post Grogsters post I remembered seeing this post Grogsters post while looking for the other one. Had 10 of them I got to top off and order (free shipping LOL). Looking at the MP2307 data sheet I saw that there is two pins of intrest 7 (EN) and 8 (SS). Getting these out to play with was 20 min's of hit and misses but got them.  First played with pin 8 but even with a big cap not as much time for the ESP-01 to get settled. So on to pin 7 and the works with adding Diode and 220uF cap now a few sec's delay while the ESP-01 powers up.  and the sender is so simple  To make this easier there are these modules  5 on order to play with. This concept can be used any time a micro has pins that toggle at power up. And if your project has a stable on power up pin it can be used to drive the enable pin when needed. Thanks for this GREAT forum. And after thought on using the 4 bit level shifter one could hold the 3.3v at bay for a few sec's may work for both input and output delaying. |
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| lizby Guru Joined: 17/05/2016 Location: United StatesPosts: 3470 |
4 I/Os on an ESP-01. Cool. How do you turn off Tx & Rx? Also, do you have a link for the module shown in the last image? (Meanwhile I'm having fun with the Wemos D1 mini & clones--so easy with Annex.) PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed |
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| Quazee137 Guru Joined: 07/08/2016 Location: United StatesPosts: 600 |
Here's a few links I went through. There was many more but theses show the concept. TX and RX as GPOI' A Youtube exp Another way With ESP Easy you can use the check box Under TOOLS > Advance_settings. Then Under HARDWARE set the GPOI'S as needed. Have FUN Quazee137 On the sending ESP Easy unit I didnt add resistors in line with RX and TX while testing but may be needed if you have pins to make use of serial port. Here's a few Droking amazon alibaba |
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| MikeO Senior Member  Joined: 11/09/2011 Location: AustraliaPosts: 275 |
I also have been playing around with Annex. Seems to work very well. I recently updated all my remote sensors that had ESP8266 with ESPeasy firmware and for most cases was all I needed to read most sensors. the ESPeasy also works great wifi is no longer a problem with loosing comms as the ESPeasy manages to reconnect with no problems. I just have one esp8266/micromite (mx170) combination where the mx170 decodes the data stream from a wind sensor and the ESPpeasy sends the data via UDP with the data coded in json.  I have a Node-mcu module running Annex as a tiny data monitor. the Annex software decodes the UDP data and displays it on a 2.8" SPI LCD display. This is a very simple setup and I was surprised how simple it was to code and so far it seems bullet proof. 'Udp Display ver$="v0.6" tft.init 16, 4, 4 TFT.FILL TFT.RGB(0,0,0) TFT.TEXT.size 2 tft.text.col &hffffff, &h00 TFT.TEXT.POS 10,10 tft.print "Udp Display "+ver$ TFT.TEXT.size 1 tft.text.col tft.rgb(255, 255, 0), &h00 TFT.TEXT.POS 10,35 tft.print "Outside" TFT.TEXT.POS 10,135 tft.print "Greenhouse" TFT.TEXT.POS 10,175 tft.print "Garden Solar" TFT.TEXT.POS 10,215 tft.print "House Power" TFT.TEXT.size 2 tft.text.col &hffffff, &h00 'end basic display ot$= "not found" oh$= "not found" ora$= "not found" op$= "not found" gt$= "not found" gh$= "not found" bv$= "not found" pw$= "not found" sw$= "not found" wd$= "not found" ws$= "not found" wg$= "not found" Touch.Setup 15 OnTouch touchme udp.begin 5001 onudp goudp 'screen update loop do update=1 tft.text.col &hffffff, &h00 if ot$ <> "not found" then TFT.TEXT.POS 10,50 tft.print str$(val(ot$))+"C"+" "+str$(val(oh$))+"% "; TFT.TEXT.POS 10,70 tft.print str$(val(ws$))+"kph G:"+str$(val(wg$))+"kph "; TFT.TEXT.POS 10,90 tft.print str$(val(wd$))+"deg "+str$(val(op$))+"hPa "; TFT.TEXT.POS 10,110 tft.print "Rain Today:"+str$(val(ora$))+"mm "; end if if gt$ <> "not found" then TFT.TEXT.POS 10,150 tft.print str$(val(gt$))+"C"+" "+str$(val(gh$))+"% "; end if if bv$ <> "not found" then TFT.TEXT.POS 10,190 tft.print "Battery: "+bv$+" vdc "; end if if pw$ <> "not found" then TFT.TEXT.POS 10,230 tft.print "Usage: "+pw$+" watts "; end if if sw$ <> "not found" then TFT.TEXT.POS 10,250 tft.print "Solar: "+sw$+" watts "; end if TFT.TEXT.size 3 TFT.TEXT.POS 10,295 tft.text.col tft.rgb(255, 255, 0), &h00 tft.print time$; TFT.TEXT.size 2 tft.text.col &hffffff, &h00 pause 5000 update=0 loop wait goudp: v$ = udp.read$ print v$ ret$=json$(v$,"otemp") if ret$<>"not found" then ot$=ret$ end if ret$= json$(v$,"hum") if ret$<>"not found" then oh$=ret$ end if ret$= json$(v$,"rain") if ret$<>"not found" then ora$=ret$ end if ret$= json$(v$,"gtemp") if ret$<>"not found" then gt$=ret$ end if ret$= json$(v$,"ghum") if ret$<>"not found" then gh$=ret$ end if ret$= json$(v$,"bv") if ret$<>"not found" then bv$=ret$ end if ret$= json$(v$,"powerW") if ret$<>"not found" then if ret$="0" then pw$="Solar" else pw$=ret$ end if end if ret$= json$(v$,"solar") if ret$<>"not found" then sw$=ret$ end if ret$= json$(v$,"pres") if ret$<>"not found" then op$=ret$ end if ret$=json$(v$,"dir") if ret$<>"not found" then wd$=ret$ end if ret$=json$(v$,"speed") if ret$<>"not found" then ws$=ret$ end if ret$=json$(v$,"gust") if ret$<>"not found" then wg$=ret$ end if return touchme: wlog "touched x/y "+str$(touch.x)+" "+str$(touch.y) wlog ramfree return Codenquilts |
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CaptainBoing Guru Joined: 07/09/2016 Location: United KingdomPosts: 2171 |
perhaps you could "slug" the chattering relay by placing a large lump of metal close to the coil. Telephone network used to do this so the line relay didn't chatter during rotary/pulse dialling... there's a discussion here that may just get the juices flowing http://www.rfcafe.com/references/electronics-world/time-delay-relays-apr-1967-electronics-world.htm |
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| Quazee137 Guru Joined: 07/08/2016 Location: United StatesPosts: 600 |
That is SWEET man. I'll need to check out Annex. MikeO can Annex have two ESP-01s talking only to each other nothing else required? Also can you make use of RX and TX as GPio pins? My next ESP-01 project is for my Three Wheel E-bike. I have a 12volt wifi router and two wifi cameras I am adding to my bike. The idea is to have longer range in sending data to my phone along with random junk to make it more difficult for any one tapping in. The ESP-01 will add two sensors also letting me arm / disarm the bike and control the cameras from my phone. The cameras have app's but need internet access so cant use them. Been thinking of adding two way sound. One camera has a mic but to use it the maker wants me to use their app and I want this to be only local stuff no internet. With a beep every few 10's of sec's going to my phone I'll know if I've gone to far or there may be wifi jamming. I have seen where a free wifi is jammed for some where around 30 sec's then the jammer turns on a higher powered wifi. becoming a man in the middle and mostly goes unnoticed. I myself never make use of free wifi. Thats just me. Places offering free wifi need to monitor it in away that if all of a sudden all connections are dropped it needs to turn off and look to see if the wifi is still up at a higher power. How many users are shopping and check the bank account or even move money around. Not realizing they left the phone on auto wifi connect. So many think that security is just built in. |
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| MikeO Senior Member Joined: 11/09/2011 Location: AustraliaPosts: 275 |
Annex implements the Espressif "ESP-NOW" protocol, so the answer is yes here . Regards using the RX/TX pins , the answer is no. Bike sounds Wild! Mike Codenquilts |
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| lizby Guru Joined: 17/05/2016 Location: United StatesPosts: 3470 |
Yes and yes. PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed |
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| MikeO Senior Member Joined: 11/09/2011 Location: AustraliaPosts: 275 |
Hi Yes you can address the RX/TX as GPIO pins but I am not sure you can isolate them from the console serial ? I may be wrong. Codenquilts |
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| Quazee137 Guru Joined: 07/08/2016 Location: United StatesPosts: 600 |
DANG !!! Annex with the "ESP-NOW" protocol looks good only 2 problems for me. 1. The compiled object code (the .bin file) for the Annex firmware is free software: you can use or redistribute it as you please except for commercial purposes. It is not allowed to distribute or embed it into products that are sold or for any other activity making or intended to make a profit. 2. I did not see that Tx and Rx can be truly disconnected from consul usage in the ESP-NOW protocol. Well I'll play with it on my bike. |
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| MikeO Senior Member Joined: 11/09/2011 Location: AustraliaPosts: 275 |
Hi its the same CC licence as MMbasic. Mike Codenquilts |
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| cicciocb Regular Member  Joined: 29/04/2014 Location: FrancePosts: 72 |
Hi Mike, happy to see that you were able to make a nice project with Annex. About the license, only the manual is distributed with a CC license but the firmware is distributed as stipulated here . |
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