I am proud to announce that the BrewPi shop is open to take your orders! Unfortunately stock is limited for two reasons:
- This was the first time I ordered most of the parts, so I did not want to order much more than 100 of each.
- China is on holiday! The timing of my product launch is a bit unfortunate. I cannot order more parts because all factories are closed. I worked my ass off before I went to Monkigras to order the stock I have now, just before all factories closed. More details on Monkigras later, when the video of my talk is released.
If the shields/parts sell out, they will automatically switch to pre-order. I will order a new batch as soon as China opens for business again, but I probably cannot ship anything before the end of February.
More info about new design choices after the break.
New design choices
I have made some changes to the parts you have seen in earlier pictures, here is an overview:
Bye, bye Molex KK headers
The Molex KK headers are great once you have assembled them, but assembling a cable is a bitch. You will need a special crimp tool and it is a lot of work. Therefore I have chosen to replace the Molex headers for the temperature sensors with mini screw terminals. You will need a very tiny screw driver, but apart from that they are easy to work with.
I have also omitted the 4-pin Molex headers for the rotary encoder and included a 0.1 inch pitch jumper cable you can solder onto the boards correctly. I could not think a reason to take the boards apart after assembly, so why not just solder them together.
New Arduino Headers
Most Arduino shields ship with stacking headers, so that was my original idea as well. But for several reasons, I have opted to use non-stacking headers instead:
- There is a large prototyping area on the board itself
- There is an additional, unpopulated header row next to the original headers. You can use these rows to make your own daughter shields.
- The LCD connector will be in the way of most Arduino shields anyway
- Non-stacking connectors are cheaper
The fact that these connectors are cheaper, doesn’t mean they aren’t very, very nice. They are very high quality from Samtec, which makes great connectors to order. I have chosen male headers with 0.3 inch extra elevation. This results in a nice clearance between the shield and the Arduino Uno USB connector. For the ISP header, I use a 2×3 elevated stacking connector, so you can still connect programmers and can use the SPI port on the Leonardo.
LCD instead of OLED
For most people a normal LCD was good enough, so I decided to sell those instead of the more expensive OLED displays. The displays are very easy to read though, great quality.
Solid State Relays
I switched from Fotek relays to PQLYT relays. They are supposed to be better quality. They also come with a clear protective cover and two fastening bolts.
Rotary encoder knobs
I ordered these 20 days ago, but they still have not arrived. They are purely esthetic, so I will start shipping orders without them. If I have not shipped your order before they arrive, you are lucky: you are getting one!
Connectors for your fridge wall
I bought a bunch of connectors that are easy to mount through a panel, so you can add connectors for the temperature sensors inside your fridge. They have a threaded ring to safely lock the sensor in place.
I bought strong car board shipping boxes that fit through a mail slot. With these boxes I can ship your order with regular mail, which is a lot cheaper than parcel service. I also bought ESD safe bags for the shield and will wrap everything in ESD safe bubble wrap. This should ensure your order arrives in good condition. You can estimate shipping and taxes in your cart. Shipping is pretty cheap world wide. Taxes only apply to the EU.
I am almost done updating the source code for the new BrewPi Shield. The code now works for both the Leonardo and the UNO, no more separate source files.
More on the updated source code later.