nardev

nardev.org

Short and simple blog, images, programming and electronics projects....and anything else i want to write about...Sometimes in English sometimes not...

14 November 2018

Testing ESP-RFID Relay Board First Batch of 200

Testing ESP-RFID Relay Board First Batch of 200

Right after the first batch of 200 boards, i noticed that there were some issues with voltages. Apparently, it looks like the manufacturer got the wrong chip or one of caps were damaged.
What ever ti was, i had to test ~200 boards and my main concern was only proper voltages. Main input of ~12VDC, 5VDC acter ACT4088 buck converter and 3.3VDC after AMS1117.

So, i took some pogo pins and drilled through some plexy boards, used very handy little voltages measuring boards and here is the result.

It took me about 30 minutes to make it and another hour to test all boards. If it was not possible to test it this way, i would definitely had to do it one by one and i can’t even imagine the struggle i would have to go through.

Good thing was that i actually had 3.3V and 5V terminals on the bottom of the board, so i didn’t have to spend much time adjusting things.

p.s. Banggood Geekcreit® Mini Digital Volt Meter

Tags:

ESP-RFID / ESP12 / Arduino / relay / RFID / Wiegand / PCB / pogopins / testing

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8 November 2018

ReflowR - New tool for faster prototyping

ReflowR - New tool for faster prototyping

Finally after 2 months

After 2 months wait, one lost package and another one shipped with DHL (which btw. arrived from South Africa to Bosnia in less than 46 hours in my hands), i finaly got RefloR, cool little “hotplate” style soldering tool.

First impression and first few boards i did only for test, went great. At first i was underrating it because it’s essentially just controlled temperature “hotplate”. However, this one worked so great and i don’t remember spending 1 second looking in instruction manual or scratching my head and asking “what should i now”. It was very natural process. Plug the power, open app, connect to ESP and choose a profile. Very intuitive and simple.

However, i noticed that in my case the plate is not following the profile accurately, it was rather “approximately”. But then again, it worked.

First test was the “test SMD soldering kit” that comes with the RefloR so after initial success, i placed 5 small 555/4017 led chaser kits that covered probably around 40% of total re-flowing area.

Here are some pics

Tags:

SMD / parts / LCSC / DigiKey / Mouser / Farnell / arrow.com / tme.eu

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6 November 2018

Ordering SMD parts from LCSC

Ordering SMD parts from LCSC

For quite some time i have been looking for good parts supplier. DigiKey, Mouser, RS, Farnell, TI etc. All those companies don’t optimize shipping for Bosnia so it’s 120EUR per package, what ever i order.

Above all, they are usually expensive and i wasn’t able to find most of what i was looking for. Maybe because lately i picked some parts that are usually available in China and those companies don’t offer them or have same parts but 3-4 times more expensive.

Asking around, some guys suggested www.lcsc.com, www.arrow.com and www.tme.eu. Checking what they offer and shipping options for Bosnia, it looks like i have great alternative for those bit fancy popular suppliers.

First “test” order i made was from www.lcsc.com and i’m very pleased with what i have got.

So, here is one fast box opening clip + some pics in “READ MORE” :)

Tags:

SMD / parts / LCSC / DigiKey / Mouser / Farnell / arrow.com / tme.eu

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2 November 2018

ESP-RFID Relay Board

ESP-RFID Relay Board

New board for ESP-RFID Firmware :)

“ESP-RFID Relay Board is tiny ESP12 module (ESP8266) board, designed for popular wiegand RFID readers and with esp-rfid firmware in mind :).”

It’s also opensourced so if you want to explore it and find two issues that i already know about :) feel free to check it here in esp-rfid repo.

Also nice thing, Omer Siar and I, decided to integrate esp-rfid firmware and esp-rfid hardware repos. I hope to publish dedicated web page about esp-rfid project soon.

ESP-RFID Relay Board GitHub

Tags:

ESP8266 / ESP12 / Arduino / relay / RFID / Wiegand / PCB

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1 March 2018

3 Way Pad

3 Way Pad

I believe somebody already amde this but i couldn’t find it. Can be hady if you want to make possible to change “direction” of 3 different lines.

I hope it will be obvious from the images what it does.

For example:

  1. have input button which i connect to another side of a PCB (just passing a line)
  2. Redirect the input button to a MCU
  3. Use output terminal as input and redirect the signal to a MCU

Follow on hackaday.io
Follow on github

Tags:

eagle / pcb / library

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1 January 2018

ESP RFID Wiegand board V1

ESP RFID Wiegand board V1

Although it wasn’t planned to server this purpose, somewhere in the middle of design i realized that this board with few more resistors would be perfect for very popular Wiegand RFID readers that you can get all around Ebay and other Chinese stores. Those readers are often completely dummy bricks which can only read code from a chip and pass it by wiegand on two data lines.

Basically it’s a ESP12 breakout board which can accept 12V input and at the same time powers up the Wiegand reader with same 12V input and accepts all possible pins from the most common readers.

You can get eagle cad schematics and BOM at github and also you can buy this board at My Tindie Store

In addition to that, it often has buzzer, LED and sometimes keypad, which also just sends the numbers it gets. One of versions i got also have simple bell button which just makes a connection on two wires. So it’s simple tactile switch there.

I implemented the support for all of those input/output lines so all you need is to program your board and read cards. I have one version of firmware which i would not be able to share at this point but i can gladly suggest eps-rfid project, which is open-source and great for the first hand to use.

In this setup, you can make your Wiegand reader as simple work hours registration device. However, next version with relay and few more features are on it’s way so, please be patient.

Also, there is a version of wiegand reader which has enough space to place this tiny board in it.

Tags:

ESP8266 / ESP12 / Arduino / relay / RFID / Wiegand / PCB

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1 January 2018

ESP12 4 relay board

ESP12 4 relay board

So many boards of this kind already exist but i wanted to make my own. One important decision is how to supply ESP12 with a power and the most elegant way is quite small and tiny PCB mountable Hi-Link AC-DC, but it gives only 0.6A so it’s right on the edge for 4 relays and ESP12. There are many more converters of this kind but not this small and often not sealed as this one is.

Another doubt i had was should i use optocouplers or not. At the end i realized, it doesn’t bring me anything that important in my case. After all, this is only a board for my home/garden use.

So, here is the sketch. I hope, soon i’ll publish photos how it actually looks like once i solder PCBs.

ESP12 4 relay board on GitHub
ESP12 4 relay board on Hackaday.io

Check images & Animation…

Tags:

ESP8266 / ESP12 / Arduino / relay / iot / songle

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1 January 2018

Electrodragon relay board with Cloudmqtt

Electrodragon relay board with Cloudmqtt

This was just a project made out of desperate situation caused by mistakes in heating system design. So my friend needed to be able to control the pump which pushes the heat towards one f the branches, for a while and also being able to turn it on/off, get some feedback etc. So far they like it and this copy/paste coding style worked for us.

Great combination of Electrodragon’s Relay board + free www.cloudmqtt.com and on top of all that, free mobile app IoT MQTT Dashboard

& This code here (which is actually simply very quick drag and drop from other projects :D):

Get the code at GitHub

Tags:

ESP8266 / ESP12 / Arduino / relay / iot / Electrodragon

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1 January 2018

Diving, PADI and AOWD

Diving, PADI and AOWD

Perhaps, one of the most exciting things that are quite easy to experience is scuba diving. It’s not so physically demanding and most of the people can do it. Although the easies way is to simply find some diving center and pay for a fun dive, i strongly recomend to take a full training for several days (Preferably PADi Advanced Open water Diver AOWD because the most exciting dives are usually those deep dives) and most important of all, pick the best ranked diving center with the best diving spots you can find.
Some diving centers don’t have that great diving sights so the dives are not as much fun as it can be.
I have been diving for a few years now and i hope i do it until the rest of my life.

Especially great fun is night dives. Sea life is best seen than and there is additional adrenalin rush since everything is so dark.

Here is some pics i made lately, all from Adriatic sea and mostly Dubrovnik, Vis, Komiža. p.s. I strongly suggest visiting Vis, Croatia. And, i don’t think it requires explanation why, it’s simplye AMAZING

Tags:

PADI / Diving / Scuba / Dubrovnik

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1 November 2017

micro:bit (1. sedmica)

Šta je to micro:bit?

Tags:

micro:bit / sarajevo / vares / programiranje

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1 January 2017

Sarajevo u pjesmama

!! Ova lista nije pregledana, za sada samo nasumicno kako cujem za neku pjesmu, ako je nadjem, pokusam je skinuti i zabiljeziti. !!

Ukoliko znate neku koja nije na ovom spisku a na bilo koji naci pominje Sarajevo ili ima motive Sarajeva i sarajevskih ulica, molim da mi javite na email

  1. Adnan i Tarik - Sarajka (Official video)-JbB2Q_hAedI.mkv
  2. Aida Music - Haj da sam Bogdo rumena ruzica - (live) - Nikad nije kasno - EM 03 - 16.10.2016-6kp1JUVpSb0.webm
  3. Al Dino - Čaršija-jJAivn0zSAg.mp4
  4. AMMAR I FIKRET - Sarajevo (FT. Anida, Adnan, Mirza)-yUAIFRSqo0Y.mp4
  5. Avlija stara Bahrija Hadžialić-Gh88iSHogCU.mkv
  6. Bascarsijska - Zlatan Fazlic Fazla-EWeUkeg_SGE.mkv
  7. Bijelo Dugme - Pediculis Pubis-oTM9NNsytRA.mkv
  8. Biljana Markovic i Tifa - Opraštam-IfaHO78wMu4.mkv
  9. Crvena Jabuka - Dusa Sarajeva-p082mJaGyl0.mp4
  10. Crvena Jabuka ft. Shorty - Dirlija 2009-MLpeuBTloi8.mp4
  11. Crvena Jabuka - Fura me-kg8VWVDcUaU.mp4
  12. Crvena Jabuka - Tvoga srca vrata-jtTDCBZjCPA.mp4
  13. Damir Imamović’s Sevdah Takht - Sarajevo-y1pYoQ-0Z0M.mkv
  14. DEEN - Spava Sarajevo (Official Audio 2004)-NPSIkSrw-V8.mp4
  15. Dino Merlin 01 Fotografija-_OLpva-aOe0.mp4
  16. dino merlin 1990 pala magla-_8USVXOd-SY.mp4
  17. Dino Merlin feat. Hari Varešanović - Dabogda-ardShamRg58.mp4
  18. Dino Merlin - Jel Sarajevo gdje je nekad bilo-vUAkLmqwcz8.mp4
  19. Dino Merlin - Sarajevo-2cpu8-zJbD0.mp4
  20. Dino Merlin Ti i Ja Sarajevski Park-PLAumkWOA4A.mp4
  21. Divlje jagode - Sarajevo Ti i ja …. ( Ljiljana )-R8DxKk2YTzc.mp4
  22. DOK MILJACKA PROTIČE-4elqYx9_Jtc.mp4
  23. Đorđe Balašević - Duet-HlMKpttHHhc.mkv
  24. D.thronE _ Story from Sarajevo Official Video-IaO0TvRtjWg.mkv
  25. Duško Kuliš - Sarajevo (Spot)-esMOZTuB294.mkv
  26. Duško Trifunović - Volim Sarajevo _ I love Sarajevo-eMSkpW8ihIk.mp4
  27. Edo Maajka - Zlatna Dolina (www.fmjam.com)-jmg1JN_hB9g.mp4
  28. EFC - SARAJEVO, NEW YORK, ROMA (Remix by Adi Lukovac & Ornamenti)-HjOIZAncjGI.mp4
  29. Elh Kmer - Sarajevo-onyEv8TcxG8.mp4
  30. Elvis J Kurtovich - Mala slatka Sarajka-6z04Y4-Lrs4.mp4
  31. EMINA ZECAJ … Pjesma Sarajevu-zrBYdVz0OgY.mp4
  32. Enes Begović _ Da mi nude Sarajevo (official) 1080p-l3URW7niYVI.mp4
  33. Enes Kišević - Pjesma Sarajevu-xazaLDH3nCY.mp4
  34. Erogene zone _ Sarajevo Official Video-OkEk7d0i11I.mp4
  35. Fazla, Bodo, Tifa, Aki i Dado - Pjesma za Davora-P2-tibd6cfA.webm
  36. Fontana di Sarajevo Original by Eduardo Cruz (Twice Born) Venuto al mondo - Volver a Nacer-FPVuUEgxt14.webm
  37. Golubica - Aprilke - Pjesme Sarajevu (1985)-c5bEf3WMNZQ.mp4
  38. Gordan Dizdarević Grk - Sarajevo moje (posveceno Kemalu Montenu-Official video)-yiVeHGwK_TE.mp4
  39. Grad krovova šarenih - Aprilke - Pjesme Sarajevu (1985)-bsJAQ1Xc6tI.mp4
  40. GRIVA - TI U SARAJEVU JA U NOVOM SADU-Qdfi344XTZ0.mp4
  41. Halid Beslic - Sarajevo grade moj - (Audio 1990)-asm17vZaAOg.mkv
  42. Hari Mata Hari - A gdje je ona (Sarajevska furka)-3062134.flv
  43. Hari Mata Hari - Igrale se delije - (Audio 1998)-9CZS19kWHEE.mkv
  44. Hari Mata Hari - Sarajevo - (Audio 2016)-76dMImZE5YU.mp4
  45. Hasiba Agic - Kono Sarajko - (Audio 1998)HD-fuXI3h2YSto.mkv
  46. Hasiba Agic - Sarajevo behara ti tvoga-8eLOLOy9MvE.mp4
  47. Hasiba Agic - Sarajevo grad-4589NznjT4I.mkv
  48. Hayat - SARAJEVO HD-TGyLto9Fa9Q.mp4
  49. H-BLOCK-SA GHETTO.wmv-5vVNstdXGY8.mp4
  50. [HD] EKV - Sarajevo (HQ Sound)-8cPCSGlElYM.mp4
  51. Henda - Svjetla moga grada-SV2aaNIdetQ.mp4
  52. Honningbarna - Prinser av Sarajevo-EBsLfe5EFvg.mkv
  53. INTRO - SARAJKA DJEVOJKA MAJCI PLAKALA _ MENE MAJKA KARA _ NEKO TIHO ZAPJEVA_159373778_soundcloud.mp3
  54. INTRO - SARAJKA DJEVOJKA MAJCI PLAKALA _ MENE MAJKA KARA _ NEKO TIHO ZAPJEVA_159373778_soundcloud.mp3:xdg.origin.url
  55. INTRO - SARAJKA DJEVOJKA MAJCI PLAKALA _ MENE MAJKA KARA _ NEKO TIHO ZAPJEVA_159373778_soundcloud.mp3:xdg.referrer.url
  56. Jaromír Nohavica - 21 Sarajevo-3N1Ko8SDZlc.webm
  57. Jasna Gospic - Zeljko Samardzic - Sarajevo meni putuje Official HD.mpg-smzK2yic3mE.mp4
  58. Judy Collins - Song For Sarajevo-46ss5p3KSps.mkv
  59. Keba - Cvecar - (Audio 2010)-UvgaaGvyZVE.mkv
  60. Kemal Monteno & Fuad Backović - Zaleđena česma-sJ6qrzLFUws.mp4
  61. Kemal Monteno - Pismo prijatelju (1992)-70HlBb4cZO4.mp4
  62. Kemal Monteno - Sarajevo, Ljubavi Moja-kcl793bhKcA.mkv
  63. Kontra - Sarajevo + TEKST-HNxqLrhNlDI.mp4
  64. Kucna Radinost - Sarajevo-cj0qP4LBP_4.mp4
  65. Kultur Shock - Sarajevo-ufLtq-0Ue1g.mp4
  66. Lepa Brena - Igraj dragi, ‘89-04hrLraz2Wk.mp4
  67. LINK - inspirisano sarajevom cijeli album
  68. Loz Contreras - Sarajevo (Blackmill Remix)_20892702_soundcloud.mp3
  69. Loz Contreras - Sarajevo (Blackmill Remix)_20892702_soundcloud.mp3:xdg.origin.url
  70. Loz Contreras - Sarajevo (Blackmill Remix)_20892702_soundcloud.mp3:xdg.referrer.url
  71. Loz Contreras - Sarajevo (Blackmill Remix)-Fnp7p-xh5hk.mp4
  72. Magic De Spell - Διακοπες στο Sarajevo-gPTwZKUcxOI.mp4
  73. Mahala Fazla-fWS-tNyw8MU.mp4
  74. Maid Mirojevic Sarajka ljepota djevojka-9D-QV5zGvus.mkv
  75. MAID MIROJEVIC Sibicari (official) video-YGXqccEsQKM.mkv
  76. MaJaBa - Grade moj-5If0mcQB3hE.mp4
  77. Mala Vita - Plesi-CueKs5-LamI.mp4
  78. MARKO LOUIS - RAJ ZA AVANTURISTE-Q9f6F2fPHSM.mp4
  79. Maximum Power - Sarajevo-PT1aQ7OgsH8.mp4
  80. Max Richter - Sarajevo-ZTvhR0lEtZM.mkv
  81. Milic Vukasinovic - Moje Sarajevo - (Audio)-D6C38TuX_NU.mp4
  82. Milić Vukašinović - TO JE MOJ GRAD (SARAJEVO)-TRaJQtaV6aw.mkv
  83. Miss Sarajevo Passengers _ U2 and Brian Eno ft Luciano Pavarotti Official Video-gdczQ2LsY0I.mkv
  84. Mjesecari - Rodjen u Sarajevu - (Audio 1997)HD-z0wEJxf8ces.webm
  85. Muhamed Fazlagić FAZLA - Sarajevo moje moj jedini je svijet-qGMNOchR2SY.mp4
  86. Nervozni Postar – Seher Sarajevo, slatki dome moj-0KjRW1l9O0Y.mp4
  87. Nigdje nema Baš-čaršije - Aprilke - Pjesme Sarajevu (1985)-CZLG1LMKsa8.mp4
  88. ode Hamuš iz Sarajeva…-CuCo—VXQuIKU-Dk.mp4
  89. Otvorena pjesma Djordju-j3r_baAOKo8.mp4
  90. PALČIĆI - Ja volim Sarajevo-wYUn3-n4ayo.mp4
  91. Park kafana Narcis Vucina-uIQcGFGeQl4.mp4
  92. Pjesma Sarajevu - Aprilke - Pjesme Sarajevu (1985)-QKttm57KjBE.mp4
  93. Plavi Orkestar - Sarajlija-zz1t1xs8MDc.mp4
  94. Plavi Orkestar - Sedam [2012] + [LYRICS _ TEKST]-DqUAWRrOmlI.mkv
  95. Pričao sam joj o Sarajevu-lX8kPt-pbmo.mkv
  96. Raspjevane Meraklije 2013 - Sarajevo uspomeno lijepa-GM2OCMQ5SMA.mp4
  97. Ratni Nadrealisti - Hor Kalibri - Rođen u Sarajevu-FFoU8N7AU78.mkv
  98. Razbolje se sultan Sulejman - DeeDee Dinko(ROCK KO FOL_POTEZ) - (Acoustic)-ikjusZPt9JI.mkv
  99. Regina made in Sarajevo - pogledaj u nebo-id2JeMPPedk.mp4
  100. Safet Isovic - Pjesma Sarajevu-mZHO-0rTX10.mkv
  101. Sandi Cenov - Zima u Sarajevu (audio) 2000.-JsJDzXREvIk.mp4
  102. Sarajevo - Almir Ajanovic-_uJb8SDsHys.mp4
  103. Sarajevo spava - Aprilke - Pjesme Sarajevu (1985)-2o16Z-hXqXg.mp4
  104. ‘SARAJEVO’- THE BALADRE EXPERIENCE-mo7Vjtg-4Nk.mp4
  105. Sarajevo zaboravit nece nikada _TUCE THOMPSON-kDCGzYIoeqQ.mp4
  106. Sarajlija Crvena Jabuka 2013-Y09969VJ7Qg.mp4
  107. Saraj-ovasi - Aprilke - Pjesme Sarajevu (1985)-l_388eDL8T8.mp4
  108. Sarr-e-Roma Daleko od mog Šehera-V25GJQpJXU4.mp4
  109. Savatage - Christmas Eve (Sarajevo 12_24)-mYLGsC3TN5Q.mkv
  110. Sedam šuma - Aprilke - Pjesme Sarajevu (1985)-Qc4hKCl9kD0.mp4
  111. Seid Memic Vajta - Pjesma O Sarajevu-rIYNil7RoyU.mkv
  112. Selma Bajrami - Sarajevo (Audio) HD-1OS90-EylkA.mkv
  113. Selma Mehmedinovic - Moje Sarajevo-yqlnEAtkjPg.mp4
  114. Selma Muhedinovic 2005 - Moje Sarajevo..avi-TgBW4ynr65o.mp4
  115. Semir Ceric Koke - SARAJEVO-Fd7DOlSgyCE.webm
  116. Shaderwan Code - Puce puska - Kad procvatu behari-nqMQhagHd6A.mp4
  117. Stakleno Zvono-Volio Sam jednu malu-xbfBM16YYoA.mp4
  118. Stara kafana Aca Mika Alas Sarajevske uske staze-yhvPj8s7FQA.mp4
  119. Svjetla moga grada…stara staza…Sarajevo-b4GQ7Tum62g.mkv
  120. Tebi grade - Aprilke - Pjesme Sarajevu (1985)-EuplTJa_T2c.mp4
  121. The Cranberries Bosnia ( High Quality )-asywK5J7LiU.mkv
  122. The Frajle - Sarajevo - (Audio 2015) NOVO-VGlGBKTglu8.mp4
  123. The Hoosiers - Sarajevo-w-IdzSnTmaI.mkv
  124. Tifa - Grbavica-70jbol0682c.mp4
  125. Ti i Ja_ [Dino Merlin]-H8wq6mDklxM.mp4
  126. TNT Band-Stari Grad (Sarajevo) 1994.-xZT1FXa8ddI.mp4
  127. Treća Smjena Crew (Sajfer) feat.Chuky-Moj grad Sarajevo-Mcd9pahPz5Q.mp4
  128. Tropico Band Feat. Mirza Soljanin - Sarajevo - Beograd - (Official Video 2015.)HD-9mJXRfHgyJE.mkv
  129. Vedo Hamsic - Cetiri mladica idu s Trebevica-LdfIyK1TYzc.mp4
  130. Vlado Kreslin i Damir Imamović - Vlado i Dado-15_mt30ER-s.mkv
  131. Vlatko Stefanovski - Sarajevo-DLapBLXE1hU.mp4
  132. Vukosav Govedarica Kota - Sarajevo-keTYN721GAg.mkv
  133. Watsky - Sarajevo (feat. Dia Frampton)-x4Ui9yr6GQ0.mp4
  134. Watsky- Sarajevo w_ Raquel Rodriguez [All You Can Do- LIVE]-ICwkp8r85I4.mp4
  135. Zabranjeno pušenje - Abid-GXuGaS3NLqA.mp4
  136. Zabranjeno pušenje - Anarhija all over Baščaršija-H0xpRqeuGcE.mp4
  137. Zabranjeno pušenje - Boško i Admira (spot)-OMMfW3IqiFE.mp4
  138. Zabranjeno pušenje - Dobro dvorište (spot)-oVdmCiqy8TA.mp4
  139. Zabranjeno pušenje - Džana (spot)-tptbkTrHWr4.mp4
  140. Zabranjeno pušenje - Fildžan viška (spot)-EZkK_p18Pmo.mp4
  141. Zabranjeno pusenje-Mejtas-4DETeStDLSs.mp4
  142. Zabranjeno pušenje - Pismo Elvisu-D1s7UBSBriI.mp4
  143. Zabranjeno pušenje - Uvod (Tema iz filma ‘Walter brani Sarajevo’)-k8OxQyi8P6o.mp4
  144. Zaim Imamovic - Evo ovu rumen ruzu-Pi9KuUTCbO0.mkv
  145. ZAIM IMAMOVIC … Sarajevo,behara ti tvoga-TkEsyhsOE58.mp4
  146. Zdravko Colic - Bembasa - (Audio 2006)-M52ligfsYiE.mp4
  147. Zehra Deović - Pjesma Sarajevu-Ejg6nup4DDU.mp4
  148. ZEHRA DEOVIC … Sarajevo,behara ti tvoga ´1965-LpA-v_eWaA8.mp4
  149. ŽERA I NARCIS - SARAJEVSKI LIJEPI DANI (official video)-gW0euhktqjk.mp4
  150. Zlatan Fazlić Fazla - Baščaršijska-pBTIkqBMm6c.mp4
  151. Zoster - Gavrilo-qWwxA8HzjVc.mp4
  152. ZUMRA MULALIC & ‘SERBO’ … Sarajevo,behara ti tvoga-COLw3wxkgRI.mp4

Tags:

sarajevo / pop / rock / pjesme

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1 January 2017

HEPEK IOT - A hub for IOT 01 (ideaand proof of concept)

HEPEK IOT - A hub for IOT 01 (ideaand proof of concept)

In essence, i realized there are many devices of this kind but most locked within some ecosystem. So, why not to design something which would be open sourced, affordable, hackable that most of makers are familiar with etc…

Essentially the idea si to make single PCB with:

  • ESP12 or NodeMCU (The good thing about NodeMcu it gives you power/programming interface right away)
  • 315/433 MHz transmitter/receiver module (controlling power RC sockets and modules, garage doors etc)
  • 4 IR Diodes (TV, Aircondittion)
  • IR receiver (Learning new codes)
  • Thermometer/Barometer (Because we can :D)
  • Neopixel ring/strip (just for fun, at the end, there is web interface, i would rather avoid display since it makes thing simpler)
  • PIR sensor interface (silent alarm for your home)

And put it in some off the shelf enclosure, share it, sell it on tindie etc..

Also, make a simple software for essential functionalities.

As a first step, i put bunch of things on my breadboard, did some copy/paste codding to make it work and of course .. it’s still on my table, waiting me to spend some more time and manufacture that board finally.

As for code, i simply extended current wifimanager library for Arduino, added a page and played a bit with html/css. The sad thing, it would definittely have to be completely rewritten. It’s simply slow and slow for development due to some steps for preparation of html/css for upload.

The PCB design and software on GitHub here

Tags:

HEPEK / ESP8266 / ESP12 / Arduino / iot / mqtt / cloudmqtt, / nodemcu / 433mhz / IR / neopixel

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I sell on Tindie micro:bit