The board arrived, finally. It is as pictured, thicker than expected and, visually at least, decently robust. But wholly hell please package this better. I realize it's coming from France, and International shipping can be terrible, but we pay for shipping on this site. A plain envelope, no backing, no wrapping, no protection of any kind, and it was even ripped! That's pretty inexcusable. Even if the product works as described, I definitely won't be ordering anything else from the seller until they at least use a bubble mailer.
The pcb is arrived but the package is no comment. simple envelope not bubble one this very bad for Electronic stuff so i hope is everything ok and not got unseen damage. Next time pls i pay extra for normal package not a simple envelope....
Une finition impeccable qui valorise le rituel du déballage. La prédominance de la couleur pourpre vient sublimer l'harmonie chromatique des composants. Le paquet a été livré sans détours dans une enveloppe a la décoration sobre et le timbrage précis.
Pros: - pre-soldered main components is very convenient \o/ - this hat is for Pi Zero, however it can work on Pi2/Pi3 if stacked on an existing hat (i.e. POE hat) Cons: - pre-soldered GPIO header prevented me from stacking it at the bottom side of my pi zero
Suggestion: don't pre-solder the GPIO header (or let the buyer choose at the time of purchase)
I'm sorry you are dissapointed. We tried to make the description as fair as possible. It is a PCB only sale, not a fully assembled device and it is not a KIT with all the components included (the Epaper display and the ESP8266 could not be delivered at this price...)
I bought some PCBs and received them after 5 days (pretty fast). They are of very good quality. Thank you! A little observation. I found a problem, fairly easy to fix. the ANTENNA pad of RFM9X is connected to GND. I'm convinced it's a technological issue. It can be easily corrected with a cutter if you have not already attached the radio module.
I am a bit desapointed about the product, first because the Schema is not readable. The 4 resistances should have a value of 390Ohm (0603? 0805?) But What about the capacitor???? 10F? 10µF 10nF? 0603? 0805?. The value is absolutely not readable. Is would be simpler just to add a sentence: "Add 4 resistances of... and 1 capacitor of .. in, with reference. I just spend about 20mn to look for this information. The Gitub is not well documented. The seller do not reply to the e-mail. There no clearly documentation to configure it, or at least it very hard to find it. Would it not be more easy to clearely add link to a wiki page or an howto? One things good: Sheeping is fast....
Yes it works well. Over 70 boards have gone and pleased buyers so far. Sorry for the delay in replying were in holiday. We reply to emails when we are there and we are ready to help. This is a hobbie for us, not a business. The value is hard to read on the schematic diagram, we agree: we modified the description to solve this. Thanks for the remark. The value is 10µF (micro farad) The value of resistors are printed onto the diagram: 390 ohms (SMD 1205 handsoldering). It is easy to see all components are SMD 1206 for people used to deal with SMD components. We will add this remark to avoid any missunderstading in the future. Thanks for the remark. The Github has the necessary information required to have something working. For more information there are Lorawan TTN documentation and RFM95 documentation. There are outside the scope of this project. The configuration is , yes, a bit tricky, as most lorawan configurations especially for beginners. The steps to install are here: https://github.com/ccadic/lorawanrpi0wshield/blob/master/installation_of_GW_software.txt . Some classical skills (Linux, RPi / Debian) are needed to perform a proper installation.
Having a nice cheap LoRa add-on for the pi series is great. However I have a few gripes about the PCB design including lack of pin labelling for screen on i2c bus (there are couple of variants around) and soldermask covering the copper pads on the bottom of the SMA connector footprint. Just small changes for the next rev. Hope I can do more to support your work.
Tnx much for your suggestions. I will make the changes in the next version as you were several to ask. Until this modification, you can solve this with the images we posted with the project, showing the components positions, values and orientation.