Adafruit will not be shipping orders Thanksgiving Day, Thursday November 22, 2018. Expedited orders placed after 11am ET Wednesday November 21 will go out Friday November 23.
0

Lightning-Bike: Mobile Payment for Electronic Bike #piday #raspberrypi @Raspberry_Pi

Lbike

Shared on GitHub:

The lightning-bike is an e-bike (pedelec) whose electrical support can be booked for a certain period of time. It uses lightning as a payment system to activate this feature. You select on the display how long you want to drive, get a qr-code that you scan and pay for with your lightning mobile APP, after that the power for the selected period is turned on. The special about this system, it’s mobile, the communication is realized via the mobile network and the power comes from the battery of the e-bike.

The heart of the system is a Raspberry Pi Zero WH, which controls both the connection to the mobile network and the switching of the power supply via a relay. An e-paper display is used as a monitor, which practically also provides 4 switches for the control of the programm. I mainly used the e-paper display because it consumes very little power, actually only when the screen changes, the contrast and good readability even on sunny days. The image composition is quite long with about 6 seconds, but it will be require only 2 steps/images to complete the payment process.

On the server side there is a Raspberry Pi 3 B there runs a lightning node based on c-lightning https://github.com/ElementsProject/lightning. This installation differs only in that there is no Bitcoin fullnode installed. I use the pseudonode sPRUNED https://github.com/gdassori/spruned/ which has the advantage that I only need about 300MB for the bitcoin blockchain. This step is optional and not required, but I wanted to learn more about the stability of sPRUNED. If you do not already run a bitcoin fullnode, you should start with this, it will run a bit more stable and strengthen bitcoin network at the same time! For the lightning node control i use the lightning-charge API https://github.com/ElementsProject/lightning-charge. That was the main reason for me to choose the c-lightning implementation. With lightning-charge it was very easy to programm the payment processes.

On the client side, i choice a raspberry Pi Zero WH with an e-paper display, mainly to keep power consumption as low as possible. More problematic in power consumption is certainly the USB modem/network card, there is perhaps a better way. The relay for switching the power for the system is controlled via GPIO and also the 4 switches of the e-paper queried via GPIO.

Enjoy

Learn more!


3055 06Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!


Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 8,700+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython – Python on Microcontrollers is here!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/


Maker Business — Spotlight on Makeblock, one of the latest companies to find success in the STEAM market

Wearables — Emphasize the light

Electronics — Avoid serial confusion!

Biohacking — BDNF a Biohackers Best Friend

Python for Microcontrollers — Python powers costumes, and community @circuitpython @micropython @ThePSF #Python

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.