Upgrade EQ-3 with arduino / tasmota

your task will be to build a modification for the standard Eqiva EQ-3 bluetooth Door Lock

The modification shall work on a arduino

(here a instruction page: [login to view URL] )

So the new door lock will be usable via WIFI and via tasmota.

(Also the old path via EQ-3 and BLE + the bottons/switches shall be workable as a last resort if the arduino fails to respond))

your tasks:


- find in a shop for a standard case or a 3d-printed (resin) case fitting on the left or right handside of the EQ-3

- the case needs to have a storage for the batteries matching to EQ-3 (holding 3xAA 1.5V alcaline or NiMH)

- you buy the hardware and you assemble it to one unit

- the new case shall have a higher capacity battery as the current EQ-3! (either add more or replace with a better like LiPo)

- suggest us the proper hardware

- the modification of the eq-3 needs to be done in that manner that the difference is not to see if you look at the door (of course the width or height can change.

- a hard (all data erased to defaults) and soft reset functionality via a button or similar hardware solution

- wires need to be placed in such a way, that they are not or hardly visible

- battery needs to be easy to replace or easy to replace to charge (no skrewing wished)

- you provide us the sources of your orders

- you provide us the 3d models if you use a printer


- door lock needs to have still all features

...- unlock

...- lock

...- open+unlock

- users still need to be unique to identify

- trace the usage of the users into a rolling logfile

- it is okay that arduino needs to be wifi connected as initial setup

- wifi setup has to be idiot proof

- deliver the software based on tasmota (or recommend similar) to make it OTA updateable

- deliver a very small UI, so unexperienced users can login with their userid+password and lock+unlock the door

- tasmote & UI shall be working behind https encryption

delivery artifacts

- bill of materials

- source code

- instructions to create binaries

- PCB sources if required or build

- case model if molded or printed

what is not needed?

- voice commands. We will integrate them in a later phase of the project (not in this job)

you cannot access the EQ-3?

No issue, share us a corresponding profile cylinder door lock to the EQ-3 which you can obtain locally. We are fine also to redecide for a different device (but must be attachable to a profile cylinder lock with a manual opening option, so users can get out in a emergency and a defective lock/battery)


for hardware

- if you need the hardware to buy, we will file the money as a milestone. On delivery to us, you get the milestone released


- after you have provided videos with the proves that it is working accordingly, we will file you a milestone for the shipping. So you get the money for the shipping itself after delivery (use insurance delivery, so nothing can get lost)

for working progress

- you create us a video where you share us the working environment. Based on this, we will release the according milestones

What is our budget?

we do not disclose our budget nor planned hourly rate. Offer us your best bid.

This job is created with a placeholder budget/rate. So ignore our rates/budgets and post your best bid.


Do not wait for our availability here. Just answer, just ask or just reply.

Habilidades: Arduino, Eletrônica, Microcontrolador, Engenharia Elétrica, Design de Circuito

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Acerca do Empregador:
( 33 comentários ) Stuttgart, Germany

ID do Projeto: #28116576

7 freelancers estão ofertando em média $261 nesse trabalho


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Hi, I am a electronics and communication engineer with more than 2 years of experience in Arduino. I have done many project in past. So I think I can help you. Let's discuss more over chat. Please look at my profile Mais

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Hello, I am interested in your project and I hope to help you realize it, I am passionate about electronics and embedded development and I hope to share with you my knowledge and experience. I can do this work in 3 da Mais

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Hello, I am a mechatronics engineer. I believe I can make the modification you need on the smart door lock. you make all the project's details clear and that is all I need to start work. please contact me for more dis Mais

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The project is quite straight forward with clear deliverables and with my expertise in arduino I can deliver to expectation.

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