Okay, I didn't expect much from a case made by a 3D printer, but the display is a real disappointment. If I had known that this clock has a button that makes the display appear clear and without a ghost for 1 single minute, I certainly would not have bought it. And to be clear, that happens at normal room temperature around 22°C and not at "elevated temperatures" as described in the documentation. The so called documentation even lacks a hint on how to set the time. Nice idea poorly executed and not worth the money.
Response from dadantech | April 9, 2021
I'm sorry that you are not satisfied with the clock. I tried to make the photos correspond to the reality as much as possible, i.e. the ghosting effect is visible on them. Despite its shortcomings, I hope you'll still find the clock to be usable and enjoyable. Nevertheless, I thank you for your feedback and I'll consider making appropriate improvements.
The Agora clock v2 is nice clock. The 3D printed case is well done and attractive. I chose the purple-red. It's easy to read in all lighting conditions except in total dark or almost total darkness. It deserves a 5 star rating but I didn't give one in all categories. In Shipping I gave a 4 star rating due to no tracking. It only took a little over 2 weeks which is certainly reasonable but I like to know when to expect deliveries. For Documentation I gave a 3 star rating which may be a bit harsh but I struggled a bit setting the clock. The designer used symbols embossed on the case for the 4 buttons but did not equate those symbols to words he used in the brief directions sheet. However, in his defense, he is selling to a international customer base and had to create directions for a diverse group. With that in mind he probably did as well as could be expected. Once I understood the controls it was very simple to set and use.
All in all this is a great product and I fully recommend it to anyone looking for this type of clock. In addition I was pleased it came fully assembled and working.
The clock was shipped and arrived quite promptly (for international shipping); already showing correct time ;)
On the outside, I find it very stylish and minimalistic. It really stands out among the "DIY clock"-type things - it feels really "polished and finished". The functionality is as descibed, no unneeded fancy features. "Just works." The display is crisp and very readable - it is e-paper after all, like a Kindle. With a couple of button presses there is an info screen which shows battery status and uptime. The claim of battery longevity seems to hold up: I've had the clock on for 3 weeks and the charge is still 99%.
I've opened the clock (needs a small allen key), and the circuit and wiring is of good quality and good design. (It simply uses a 32768Hz quartz crystal routed to the main atmega328p MCU to keep track of time, there is no RTC.) The schematic and firmware sources are available through author's website; the standard AVR 6-pin ISP header is already soldered on the PCB. So potential firmware updating does require external hardware (AVR ISP programmer with 3.3V signals), it is pretty standard and well documented (one can also use an Arduino to do this in a pinch). The version of firmware that was shipped with my clock is pretty good and "feature complete" however, so no real need for this.
Overall, this is an awesome clock for both actual use and "avr-hacking".
I have a thing for clocks, and immediately fell for this minimalistic e-ink clock.
The 3D-printed enclosure has a nice finish, and I am really happy with the almost handwritten numbers on the clock face.
I might not have read through all the available documentation, but I am really happy that the clock is rechargeable (up to six months of battery time), I did not expect that. There are small touches everywhere that makes this feel like a premium product. Pressing buttons on the backside brings up menus, the clock will tell you when/how much it's charging or when it needs charging, and there's even a function to remove ghosting from the e-ink display.
It's a five out of five on all accounts, thanks for an excellent clock!