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-shimano
+# Shimano e-Steps
+This repository is dedicated to the Shimano e-Steps as I happen to have an e-Bike that is fitted with the Shimano drive-train. There is hardly any technical information on the electronics, so I decided to do a little exploring myself. 
+
+## e-Bikes
+Electrification of a bike is very populair. There are two basic bike types:
+
+- pedelec, limited to 25km/h, no helmet required
+- speed e-bike, limited to 45km/h, requires a helmet, insurance
+
+Among the pedelecs, drive-trains of Bosch, Shimano, Bafang and Yamaha are used as well as automatic transmission systems of Shimano, NuVinci, etc. which make riding a bike a joy.
+
+## Experiments
+I ordered a bunch of accessoires and started experimenting...
+
+### Add the EW-WU111
+For anyone that thinks that just adding the Bluetooth module to the bike: it doesn't work.
+
+- Connect EW-WU111 to EW-SD50
+- Take out any connection on the bike
+- Place the interface and cable in between
+- Pressing the power button
+
+The display stays clear and the e-steps system does not turn on.
+
+- Restore the situation
+- Pressing the power button
+
+The display turns on and the e-steps system works like before.
+
+### Use the SM-PCE1
+Let's try to hookup the PC interface. For that we install the software on a PC.
+
+- Preinstall Microsoft `dotnetfx35.exe` software as this is required. You can find this on the Microsoft website.
+- Install the Shimano software `e-tube project`. This can be found on the Shimano website.
+- Put the `SM-JC41` junction box in one of the wires from the e-bike system
+- Attach the `SM-PCE1` to the USB port
+- Attach the special cable to the SM-PCE1 and the other end to the junction box
+
+## Accessoires
+
+### SM-PCE1 PC Linkage Device
+The `SM-PCE1` is an USB interface to connect the e-Steps system to a PC. It is used for service, configuration and maintenance. It is normally not required for a bike owner to have such an interface, but my curiosity was triggered to find out if I can hookup Bluetooth to my bike.
+
+- [BOX](https://user-images.githubusercontent.com/1014001/43896685-f58adc2a-9bd9-11e8-9821-9a8bd3c760c1.jpg)
+- [PCB TOP](https://user-images.githubusercontent.com/1014001/43896881-a103f028-9bda-11e8-8a23-826b529461cf.jpg)
+- [PCB BOTTOM](https://user-images.githubusercontent.com/1014001/43896903-ae41b82e-9bda-11e8-99b4-9aa84fdd4943.jpg)
+- [BOX INNER SIDE TOP](https://user-images.githubusercontent.com/1014001/43896922-be125c4a-9bda-11e8-8097-daa525b39b0f.jpg)
+- [BOX INNER SIDE BOTTOM](https://user-images.githubusercontent.com/1014001/43896908-b4724cd6-9bda-11e8-948c-682df6467245.jpg)
+- [BOX BACK SIDE](https://user-images.githubusercontent.com/1014001/43896913-b80eea16-9bda-11e8-8450-f36e1a5e1dfe.jpg)
+- [BOX SIDE VIEW](https://user-images.githubusercontent.com/1014001/43897124-60b91e7a-9bdb-11e8-816b-77eb42061afe.jpg)
+
+#### Super Capacitor
+Strangely enough the PCB has two super-capacitors. These are 2.5V and stacked so they can handle 5V.
+
+#### mini USB Interface
+The USB interface is a Texas Instruments chip, 
+
+
+### EW-WU111 Wireless Unit
+The `EW-WU111` is a wireless interface with `ANT` and `BLE` wireless standards. The interface can be placed in between a wireless connection cable.
+
+### EW-SD50 Electric Wire
+The `EW-SD50` is a piece of wire in various lengths with connectors at both ends. The length of the wire can be ordered between 150mm and 1600mm.
+
+### SM-JC41 Junction Box for Di2
+
+### SM-DUE10 Speed Sensor
+The `SM-DUE10` is a Reed switch with an attached cable, together with a magnet that can be attached to the spoke of a wheel. It is handy to have  the magnet around if ever you loose the magnet the e-bike doesn't function anymore.
+
+### TL-EW02 Plug Tool (for ST-6770)
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