ceech

318 orders since Dec 18, 2014

Ljubljana, Slovenia

Ships from Slovenia.

View Store

Sadly, we found out that this seller passed away in February 2020. Our condolences to his family and friends.

Overall Rating:

Review Breakdown

Average Ratings

Product: (4.06)

Documentation: (3.56)

Shipping: (4.17)

Communication: (4.06)

All Reviews

Jan | Oct. 12, 2020

Good Li-Pol battery management board, but..

For 18V 20A LiPO Li-ion battery management system BMS

I use this board in robotics for the protection and management of Li-Pol battery used for control electronics. Boards work as described without any problem, but... I often miss some way to turn off or turn on load externally. The pins for the tactile button to power up/down the load will be sufficient.

Vincent | Nov. 19, 2019

Item never received

For 330mV BQ25570 start-up energy harvester

The seller never answered my messages...
The seller never answered my messages...
The seller never answered my messages...

Serdar | Sept. 6, 2019

SERDAR YILMAZ not delivered order

For Piezo energy harvester

Dear Madam/Sir,
I did not still receive my order Piezo Energy Harvester, If you will not be able to deliver it, please payback its amount to my credit card,

Thanks..

Kim | July 4, 2019

Poor solder quality

For LiPO charger / boost converter 5V 3.3V outputs

I ordered 6 pcs. of which only 2 worked out of the box. Four had components either dropped off the board already at arrival or during handling and assembly. I managed to solder them back on the board and three where back in business, however the last has a "heavy load ~25 ohm" at the output of the MAX8903A LiPO so no luck here. I can't find the short so probably a defective component or some short underneath a component - given up. I think the product and function is great, but soldering quality is terrible. I adjusted the max charging current Ichg as well as the Iin according to the datasheet of the MAX8903A, since the resistor value calculations wasn't in the product documentation.

Response from ceech | July 4, 2019

There was a bad temperature sensor in my soldering station. I had it replaced.
If you have any faulty boards, I will replace them. Free of charge. I apologize.

Frank | July 3, 2019

Energy harvesting test with the BQ25570

For 330mV BQ25570 start-up energy harvester

I evaluated the energy recovery with this module to evaluate the life of a sensor. The results are surprising.

Alex | June 23, 2019

Excellent BMS with some awesome features

For 18V 20A LiPO Li-ion battery management system BMS

Does exactly what it should with many useful features, some of which I used in my battery pack project. Used it to balance charge 5 18650 batteries and works brilliantly with the ability to configure parameters such as overvoltage and undervoltage thresholds using the integrated Atmega 328 MCU. Values like individual battery voltages and drawn current (via a coulomb counter) can be queried via registers as detailed in the BQ7692 IC datasheet. Overall an excellent piece of kit for the money!

Roger | May 15, 2018

An excellent bit of work

For LiPO charger / boost converter 5V 3.3V outputs

A really simply idea that is well executed. I use it to power some remote sensors from a 4000mAh battery with a small solar panel as a charging source, it does exactly what the designer said it would. The charge monitor is perfect for reporting the system health back to the host system while the 5V boost output is a very hand addition to the 3.3V output. Nice!

Boris | March 19, 2018

Respect to Ceech

For Thermal Energy Harvesting w/ super cap

I made application with input dc low then 0.5v.
The board really give me dc 2.2v.
Quality product.
Fast delivery.
Thank you for help, Ceech.

Urs | Jan. 29, 2018

tested, but ...

For 330mV BQ25570 start-up energy harvester

I've put the device attached at a solar cell with 5V under full sunlight, a LiPo (2000mAh) and a LED (10mA) as load at the 3V3 output.
Everything worked fine and the would be loaded slowly (not always sunny) from 3.9V to 4.2V.
But immediately when the battery was fully loaded the output voltage begans to fluctuate at 2.7V (DMM measurement) and as a result the LED blinks.
I attached some big capacitors (2 x 470uF) at Vout, but it was not possilbe to flatten the fluctuation.
Also shadowing the solar cell (output down to 3V) does not help

With that result the product is unusable

If there is any improvent I can do, please let me know

Response from ceech | Feb. 23, 2018

Input voltage should be kept below 4.2V. It is a boost converter on the input.
Not all input voltage / battery type combinations work well. Some input voltage tweaking might be necessary for optimal results.
Try with 1V on the input, that might yield cleaner output voltage.

Robin | Aug. 11, 2017

High quality piezo energy harvester

For Piezo energy harvester

I recently needed an efficient piezo energy harvester for a small electronics experiment - this board worked perfectly, straight out of the box. Thanks!

Aurélien | July 16, 2017

Perfect

For 330mV BQ25570 start-up energy harvester

I have tested this board with a MCU during several days, it works perfectly for ultra low power application.
Very good job, exactly what i was looking for.
Thank you very much ;)

Stefano | July 7, 2017

Excellent device, fast delivery

For LiPO charger / boost converter 5V 3.3V outputs

The charger perfectly works.
Used to charge a 3.75V/4600mA Lipo battery kept from a broken tablet with a small solar panel 6V/1.1W/200mA.
The presence of a Control Monitoring V+ is helpful to correctly pointing the solar panel.
Good packaging, fast delivery from Slovenja to Italy (although no tracking number available)

Muhammet | July 6, 2017

Its a nice Harvester kit

For 330mV BQ25570 start-up energy harvester

It waas a good experience.Thank you so much.
It waas a good experience.Thank you so much.
It waas a good experience.Thank you so much.

Vicente | April 13, 2016

Todo bien. El producto llegó en perfecto estado.

For Thermal Energy Harvesting w/ super cap

Voy a intentar eliminar las pilas de botón de relojes y dispositivos señalizadores.
Sí, seguro que volveré a comprar en Tindie, he tenido una muy buena experiencia.

David | Dec. 28, 2015

Nice board, excellent quality

For Wireless sensor board w/ ATmega328p

I bought this to experiment with the ESP8266. The supplier has been very helpful. I only wish it had a socket for the JY-MCU Bluetooth module.

Josh | Aug. 29, 2015

Great board that work well

For Thermal Energy Harvesting w/ super cap

I was working on my 1st solar project and was trying out a of different methods to charging the battery. This performed well & was easy to use. He has another type of charger, so do your homework on which one you want. The quality is top notch.

Iliya | Aug. 4, 2015

Very good

For Thermal Energy Harvesting w/ super cap

Excellent idea and realization. Energy harvesting is very modern today and the idea of using such a device (powering without a battery) is excellent.

Josh | July 22, 2015

Good idea, well executed

For Biggie smalls

This board is well thought out & seems to work well I would have. It does require 5v.
The only caveat is the adjustments weren't obvious to me; but after reading the datasheet I was able to get my head around it.
Response to questions were courteous. There is no "blinky" loaded, but if you hook it up to a serial monitor, it does put out some data (temp and something else) so you do know it's working right away. Seems to draw more than the RocketScream version, but this seems to handle the solar panel better.