All posts tagged witty pi

New Product! Witty Pi Mini is a new member of Witty Pi family

Today we are very proud to announce our new product – Witty Pi Mini.

What is Witty Pi Mini?

It is a new member of Witty Pi family and it has pHAT shape. Comparing to its older brother Witty Pi 2, Witty Pi Mini is much smaller (65 x 30 x 4mm) and has (almost) all the functionalities.

01

What’s New?

It uses a 0.08F (equals to 80,000uF) super capacitor for off-power time keeping, and can keep the RTC time without external power supply for about 17 hours. It is true that Witty Pi 2 with CR2032 battery can keep time for much, much longer, but considering the use case of Witty Pi, that may not be necessary as Witty Pi is suppose to be connected to power supply all the time (otherwise it won’t wake up your Raspberry Pi). Sometimes you may want to move your Witty Pi to another room, or make some special wiring before powering Witty Pi again, 17 hours off-power time keeping should be enough. If you really need a much longer off-power time keeping time, you can make use of the “Vbat” testing pad on the back and connect your own battery for much longer time keeping. You can find more details on page 31 in the user manual.

Different than Witty Pi 2, Witty Pi Mini doesn’t have those colourful jumpers. However the functionalities of those jumpers still exist, but you will use them in a different way. The red and blue jumpers are replaced with two SPDT switches, and the yellow and green jumpers are replaced with zero-Ohm resistor. You can still change the pin used by Witty Pi Mini, but you will need to unsolder the R26 or R27, and wire the pad to the new pin accordingly.

Witty Pi Mini has a red LED on board as power indicator, which will light up when your Raspberry Pi gets powered. This is very handy when you use Witty Pi Mini with Raspberry Pi Zero (W), which doesn’t have power indicator on board. Raspberry Pi Zero (W) should have the 40-pin GPIO header (not included in the package) soldered before connecting to Witty Pi Mini. The plastic screws, nuts and spacers in the package can firmly fix them together.

02

 

 

Although Witty Pi Mini has pHAT shape, it can also be used on other models of Raspberry Pi. In order to get reliable connection and also have access to the GPIO pins, you may need to mount the stacking GPIO header (not included in the package).

03

What’s Not New?

Witty Pi Mini uses the same software with Witty Pi 2, and the process to install the software is the same.  Also Witty Pi Mini uses the same schedule script so you can our web application to generate the schedule script for it:

WP_Webapp

Want to Know More?

You may find more details in the user manual of Witty Pi Mini.

WPMUserManu

Where to Buy?

Now you can buy Witty Pi Mini from our online shop, or from The Pi Hut.

New Revision of Witty Pi 2

Witty Pi 2 is a HAT-shaped add-on for Raspberry Pi that adds accurate realtime clock (DS3231SN) and power management, which allows you to define complex ON/OFF sequence of your Raspberry Pi with simple script. Witty Pi 2 is one of our flagship product and is becoming more and more popular recently. Today we announce the second revision of Witty Pi 2, which only has slight difference on the look and introduces a small enhancement, yet significantly simplifies our assembly process.

The figure below shows the different look of reversion 1 and reversion 2:

rev1_vs_rev2

Until recent days, both Witty Pi and Witty Pi 2 use a rather complex assembly process. The 40-pin stackable header needs to be soldered manually on the board first, and then a plastic pin holder will be pressed on the board, to make the board look nicer.

40_pin_header_assembly

Soldering the 40-pin stackable header is a huge workload, and we could hardly bear it, as the demand of Witty Pi 2 goes higher. So we take the idea from the Sense HAT, and use a surface-mounted female header to assembly the stackable header.

smd_header

Witty Pi 2 (reversion 2)

 

This SMD female header is customised, and has only 2mm plastic height (the one on Sense HAT has 3.5mm plastic height). This slim header can make sure the stackable header be hold firmly, and still has enough length of pin exposed on top. This female header increases the BOM cost, but it saves us a lot of time on soldering the stackable header.

Although the stackable header is fixed in place, you can still take it away if you wish. By doing so your Witty Pi 2 becomes a very slim board and more suitable for portable project. For example, you can connect it with Raspberry Pi Zero:

with_rpi_zero

In reversion 2, we also made a small enhancement on the design, and prolong the delay time (for 2~4 seconds) before Witty Pi 2 cuts the power. The purpose of this enhancement is to avoid “hard shutdown” unintentionally. This change doesn’t make Witty Pi 2 more NOOBS friendly, since the delay on NOOBS menu is way longer. You will still need to avoid using NOOBS, or disable the NOOBS menu to make Witty Pi 2 work. More details about this issue can be found on page 5 of Witty Pi 2 user manual.

The second revision of Witty Pi 2 is now in stock, and the pricing is the same with the first revision.

Witty Pi 2: the New Witty Pi

2

Witty Pi has been in the market for more than a year, and it got public praise at the first place. By integrating realtime clock and power management into one board, it allows defining complex ON/OFF sequence with simple script, which is very welcome by users. Today we go a step further, and announce the new generation of Witty Pi: the Witty Pi 2.

What’s New?

First let’s compare the appearance of Witty Pi and Witty Pi 2:

Witty Pi

Witty Pi

Witty Pi 2

Witty Pi 2

Both boards have exactly the same size. The two pictures are with slightly different scale, that’s why Witty Pi 2 looks bigger. As you can see, both boards are quite similar. The switch and micro USB connector are not moved in Witty Pi 2, so the acrylic case will still fit.

The obvious differences are the jumpers, there are 4 colorful jumpers now. The newly added blue jumper is to enable/disable the pulsing dummy load on board. If you are using power bank to power your Witty Pi 2 + Raspberry Pi, you may need this pulsing dummy load to keep your power bank alive without drawing too much current.

Also you can see a new 6-pin female header on the top-right corner. This header breaks out some important signals (+5V, LED, RTC_INT, Vbat and Switch) on the board, which makes integration with other boards become easier. You can also use this header to connect an external switch (physical or electronic) to control your Witty Pi 2. Driving an external LED is also an easy work now.

You may also notice the chips are different. In Witty Pi 2, we use much better chips (DS3231SN, AO4616L and SA555), which have much wider operating temperature range. This means your Witty Pi 2 can work outside under much tougher environment. More importantly, the new DS3231SN chip is very accurate (annual error < 5PPM), and it has temperature sensor inside! With the new software you can read the temperature around your Raspberry Pi :-)

chips

There are some improvements that could not be found in the picture too. Witty Pi 2 doesn’t use the TXD pin any more, hence using serial port for (huge) data transaction will not have any problem in Witty Pi 2. Also the famous “dead lock” problem, which is caused by ungracefully power off, is now solved at hardware level. Without the possibility of “dead lock”, Witty Pi 2 has much better reliability than the old Witty Pi.

Also the battery life has been extended a lot, thanks to the low power consumption of the new DS3231SN chip, which only draws about 3uA current from the battery, when no power supply is connected.

It is quite safe to replace Witty Pi with the newer Witty Pi 2, since Witty Pi 2 has the same interface with Witty Pi,  and Witty Pi 2 can even work on Witty Pi’s software (but not the reverse).

How Much?

Comparing to the old Witty Pi, the material cost of Witty Pi 2 has been significantly raised, mainly due to the high price of DS3231SN chip. As a result, we have to raise Witty Pi 2’s price to 480 CZK per unit (about 17.76 EUR, or 14.88 GBP, or 19.68 USD).

When Can I buy One?

We open the pre-order channel for Witty Pi 2 today, and you can pre-order it in our online shop. We will start the shipping of Witty Pi 2 on about 20th July, 2016.

Pre-order Witty Pi 2

How About the Old Witty Pi?

The old Witty Pi is now officially retired. We will not manufacture the old Witty Pi any more, unless our customer request to make a customized batch.

 


 

Update on 2016.07.20:

Witty Pi 2 is officially in stock now.

 

Witty Pi has Case Now

Today we announce the acrylic case for Witty Pi + Raspberry Pi, and there are two colors available (clear and dark brown).

dual

If you need both Witty Pi and the case, you can order the “Witty Pi + Case” kit for better price. See kit with clear case and kit with dark brown case.

Here is the assembly guide: http://www.uugear.com/portfolio/assembly-guide-acrylic-case-for-witty-pi-raspberry-pi/

We hope you like them :-)

Witty Pi is in Stock Now

We announced our new product “Witty Pi” about a month ago, and sent out a few samples to some friends that are interested in writing a review. Such as Michael Horne from recantha.co.uk and dbv from forum-raspberrypi.de. The feedback are quite good: all reviewers like the features and think the pricing is reasonable. According to the reviews, the only point that needs to be improved is the software, which is in 1.00 version and has very basic functionality. We will of course improve the software and add more new features, such as setting a repeatable startup/shutdown schedule, a GUI for better interaction or even a web interface for remote settings etc.

We opened the reservation process for Witty Pi since two weeks ago. Until the moment I write this post, there are already 276 units of Witty Pi get ordered. We appreciate the customers who trust us and back-ordered Witty Pi, and we work very hard to accelerate the stocking. Finally, we made it today :-)  We are happy to announce that Witty Pi is in stock now, and more batches are being produced and are coming soon!

We will ship out the first batch of Witty Pi tomorrow. Below is a picture of the package content:

wittypi_package

If you have not ordered yet, you can order it now :-)

 

Witty Pi is Now Open for Reservation!

Two weeks ago we announced our new product: Witty Pi, and now we open the reservation process for this wonderful product. That means you could back-order Witty Pi for you now!

We still need some time to prepare for the shipping, so the first shipping of Witty Pi is scheduled on 18th May. The package will contain a Witty Pi board, a CR2032 button battery, 4 copper standoffs and 8 copper screws.

wittypi_5

 

As we mentioned before, the unit price for Witty Pi is 380 CZK (about 15 USD, 13.8 EUR or 10 GBP). This is a very competing price and we hope this wonderful product is affordable to more people.

If you are interested, the reservation link is here: http://www.uugear.com/product/witty-pi-realtime-clock-and-power-management-for-raspberry-pi/

New Product: Witty Pi is Coming Soon!

It has been a while since our previous post. We were not sleeping, instead we were working hard on new products. Today we are glad to announce that one of our new products: Witty Pi is coming soon!wittypi_0

What is Witty Pi?

It is tiny PCB that could be mounted on your Raspberry Pi (model A+, B+ and Raspberry Pi 2 supported). With Witty Pi, your Raspberry Pi has realtime clock (RTC) and power management on board, and you get some amazing new features:

  1. You can properly turn on/off Raspberry Pi with single tap on the switch.
  2. Raspberry Pi and all its USB peripherals get fully power cut after shutdown.
  3. Raspberry Pi knows the correct time, even without accessing the Internet.
  4. You can schedule the startup/shutdown of your Raspberry Pi.

wittypi_2

 

Why we need Witty Pi?

Raspberry Pi uses micro SD card as its “hard-drive”, and it writes date to it from time to time. If you suddenly cut Raspberry Pi’s power without halting all processes in the system, the micro SD card may lose power during the date writing, and has the chance to be damaged.

Witty Pi adds a power switch for Raspberry Pi, and you can turn on/off the Pi properly, without worrying about the micro SD card. Witty Pi’s daemon process will halt all processes for you, before really cut off the power. What’s more, if you shutdown your Pi with “sudo shutdown -h now” command, or you choose “Shutdown” in the desktop environment, Witty Pi will detect that and fully cut off your Pi’s power after a few seconds. It is true that Raspberry Pi doesn’t consume much power after shutdown, but there are still some. If you have some USB peripherals connected on your Pi, they will also consume power even you shutdown your Pi. With the help from Witty Pi, your Pi’s power can be fully cut off and all its USB peripherals will not consume power anymore. Cool, isn’t it?

The ability to schedule shutdown and startup are also very useful. You don’t have to wait til midnight to shutdown your Pi, or wake up very early to turn on your Pi :-)

Also don’t forget Witty Pi has RTC on board, it can remember the correct time for your Raspberry Pi. Even without the Internet access, your Pi will know the correct time, because Witty Pi will synchronize the time to your Pi’s system.wittypi_1

When and How Much?

The retail price for Witty Pi will be 380 CZK (about 15 USD, or 13.8 EUR, or 10 GBP). Besides the Witty Pi board, the package also includes a CR2032 button battery, 4 cooper standoffs and 8 cooper screws that can help you to fix your Witty Pi with Raspberry Pi.

The exact date to ship the first batch of Witty Pi is not decided yet, but the reservation process will be opened on our website very soon. Please keep an eye on our website, or follow us on Tweeter, Facebook or Google+ if you are interested.wittypi_4Update on 2015-04-18:

Here is a video to introduce Witty Pi’s cool features:


Update on 2015-04-19:

Here is the user manual of Witty Pi (in PDF format): http://www.uugear.com/doc/WittyPi_UserManual.pdf

Update on 2015-05-01:

The reservation of Witty Pi is now opened: http://www.uugear.com/product/witty-pi-realtime-clock-and-power-management-for-raspberry-pi/