Fusion Tech

1,057 orders since Feb 07, 2016

Brno, JM, Czechia

Ships from Czechia.

Custom Work Available

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As of July 2025, our products are exempt from import duties and de minimis fees into the US. Feel free to contact us for updates.

Overall Rating:

Review Breakdown

Average Ratings

Product: (4.29)

Documentation: (3.22)

Shipping: (3.78)

Communication: (3.32)

All Reviews

Uwe | March 10, 2020

No support, no communication

For CAN32 - An ESP32 dev. board with CAN-Bus (V2.1)

I bought the CAN32 board together with the OLED extension.
The documentation is really bad and no example code is avalable.
But I finally managed to run my code on the board.
But I absolutely failed to get the OLED extension working. Paul from fusion promised me to send sample code 4 weeks ago, but even after asking for the promised code nothing happend.

So stay away from it

Uwe

Andrea | Aug. 27, 2019

Still not able to get it working

For CAN32 - An ESP32 dev. board with CAN-Bus (V2.1)

As pointed out by others the lack of schematics and hard communication with the producer render this product startup very hard.
Moreover I'm still not able to get it working with the CAN bus I have, the producer suggestes to unsold the termination resistor - I would have preferred a jumper since configuration changes for anybody.

Ronald | Aug. 27, 2019

Shipping time 5 weeks, no response on emails

For Dual CAN-Bus adapter for Teensy 3.5, 3.6

For professional company's buying here won't be a good choice.
First order had to wait 5 weeks so we already had to buy alternative product.

Second time before ordering contacted seller, asked how many on stock, seller promised to to send immediately after payment.
After payment no reply to emails anymore. No tracking nr or whatsoever.
No idea if and when we will receive goods.
Shipping cost are high (€24,-) so you would assume it's quick right, but after 9 days still nothing.

Andreas | Aug. 5, 2019

MicroPython not working

For CAN32 - An ESP32 dev. board with CAN-Bus (V2.1)

I bought this board in mind to program it in microPython. Flashing the latest firmware (esp32-20190805-v1.11-187-g00e7fe8ab.bin) works with no problems. But I could not see the Python REPL prompt (>>>) !

CAN work with USB connected but not with 12V. As already noted in other reviews, it would be nice to have the schematic.

Finally, I got the board to work. Here the code: https://github.com/ubx/CAN-Logger.
But then I powered it with an original Raspberry power supply (USB-C, 5.1 Volt, 3 Amps) and the board died, the USB to UARTconverter gets very hot.
But maybe just a coincidence ?

Davide | Jan. 23, 2019

No support is given, lack of communication

For Dual CAN-Bus adapter for Teensy 3.5, 3.6

Beside having quickly answered to the request for an additional item (that by inadvertence was not delivered and required a Paypal claim to do so), the seller is not answering requests for information about the product (i.e. Will any Teensy 3.6 GND and 3,3V able to provide sufficient current to the module?) and to provide a correct invoice.

Chase | Jan. 13, 2018

Hardware works, but lack of documentation caused problems

For CAN32 - An ESP32 dev. board with CAN-Bus (V2.1)

I bought the CAN32 hoping that it would be an easy way to log CAN data using Arduino. Unfortunately, there is no schematic for this board or other documentation, which caused me to spend an entire weekend trying to get the CAN functionality to work. The problem was that the CAN transceiver Rs pin (mode select) was connected to pin 27 (IO16) on the ESP-WROOM-32 module and needed to be driven low, and the Arduino example code that the product page links to does not do this.
Very disappointed in the lack of simple documentation or working example code, I should not have to reverse engineer the product in order to be able to use it.

Response from Fusion Tech | Feb. 21, 2018

Sorry I forgot about this. I have added it to the product description.

James | Nov. 18, 2017

Nice product. Bad communication and shipping.

For 12mm and 16mm Antivandal RGB "Colorpixel" Buttons

Communication was bad. Tried 7 times with multiple different methods. Like others, I had to initiate a PayPal case to get anything response or shipping. Took about a month.

Marco | Nov. 17, 2017

Terrible communication, no warranty, not keeping promises!

For TinyTracker GPS/GSM/CAN for Teensy 3.1/3.2

Bought an TinyTracker GPS/GSM/CAN for Teensy 3.1/3.2 after a lot of struggle I got it work and out of nothing it stopped working.
After a lot of hassle I got in contact with Paul and we negotiated that I send the complete(!! The Teensy+TinyTracker, Gyro Addon, SD-Card addon (Worth; €20+€95+€23+€8+Shipping back to Czech Republic = >€170 ) unit back.
So I send my complete Teensy (€170) back to Czech Republic.
Paul confirmed 28 of april 2017 he received the unit and also mailed me he was working on it (if it were any problem he de-soldered everything).
After this last message there's an complete radio silence for about 7 months.
In those 7 month I posted 7 messages on the Forum and all without response of Paul.

I feel really ripped off !!

Reading other reviews about lack of communication, order/shipping updates I would advice everybody(!!) to not buy at Fusion!

Nathan | Sept. 12, 2017

Nice switches, long shipping, unable to contact seller.

For 12mm and 16mm Antivandal RGB "Colorpixel" Buttons

I have not used the switches yet (I plan to revise after using them). But the initial impressions are fantastic. They seem solid and nicely build. The shipping took a little more than 6 weeks and when I attempt to contact the seller I was unable so I contacted tindie and they contacted the seller. I never got a return message from the seller but eventually my package arrived. In summary the switches seem quite good and worth buying, if you can wait for the shipping, but don't expect to be able to contact the seller if you have issues.

Andreas | April 4, 2017

Good product, no communication

For 10DOF MPU9250+MS5637 sensor addon, Teensy 3.0-3.2

Cool product, good quality but shipping&communication not great.
Seller didn't communicate so I had to open Paypal-case (with Tindie as 3rd party) and then the product was shipped (almost 2 weeks after payment).
Couldn't find any documentation so it took some trial&error to find the correct I2C configuration.
I used Kris Winer's great example (https://github.com/kriswiner/MPU-9250/blob/master/MPU9250_MS5637_AHRS_t3.ino) to get started. Beware, you need to change all "Wire" to "Wire1" and I2C PINs to 'I2C_PINS_29_30' (SCL1&SDA1) and set the interrupt pin to 31.