Firstly, thanks for making what you have made so far! I can confirm that the app connected between a Pixel 8a (Android 16) and a CX gen 5, I did need to put the bike into pairing mode. I have had some thoughts on the project though please don't see it as negative, just seeing whether these other options have been thought about. I will see about ordering the board soon so I can try that bit too, I have previously done a few arduino based projects, reading your instructions seemed straight forward enough.
Some questions on the project.
1) Is the app constantly staying on in the background for connectivity reasons? If so, could be worth having a kill switch.
2) I am a little confused for the use of the sense version of the board, this means the board is always on? Would it not be a simpler setup to have a physical switch to turn it on and off instead? That would then allow going for the cheaper board.
3) Could you have the voltage readout of the battery for the bridge in the android app?
4) For testing purposes it seems like I could just power the bridge using a usb power bank, is that correct?
Regarding powering the bridge:
1) You could see the use of the Low Power Port on the motor as a power source for the bridge, then enclose it inside a waterproof case, therefore negating the need for a battery. You can buy cables with just a bare +- and is fed at 12v, so a step down board would work.
2) You can even get a SP Connect LPP cable which has a USBC (5V/2A) directly on it. It would make creating a small waterproof box simpler and no soldering. Downside of both LPP setups is the requirement to have that port activated.
www.ebike24.com
3) Can't help but notice on the 400C display it has a USB charge port, it states this doesn't work if the HPP is used (or for the SX the MPP is set to High power). That must mean there is a fair amount of power available on the display cable. You can get Y cables when adding a Purion 200 to a mini controller, so would think you could use a the display cable as a power source. In addition, I wonder if you can read the data directly off the display cable, therefore removing the need for the phone app. However, no idea how easy it is to interrogate that.
4) If you didn't want to mount the bridge to your bike then you could use an inductive charging adapter, then making a waterproof case would be easy. Though have also seen qi charge addon boards for phones which have a USBC output directly.
thepihut.com
Some questions on the project.
1) Is the app constantly staying on in the background for connectivity reasons? If so, could be worth having a kill switch.
2) I am a little confused for the use of the sense version of the board, this means the board is always on? Would it not be a simpler setup to have a physical switch to turn it on and off instead? That would then allow going for the cheaper board.
3) Could you have the voltage readout of the battery for the bridge in the android app?
4) For testing purposes it seems like I could just power the bridge using a usb power bank, is that correct?
Regarding powering the bridge:
1) You could see the use of the Low Power Port on the motor as a power source for the bridge, then enclose it inside a waterproof case, therefore negating the need for a battery. You can buy cables with just a bare +- and is fed at 12v, so a step down board would work.
2) You can even get a SP Connect LPP cable which has a USBC (5V/2A) directly on it. It would make creating a small waterproof box simpler and no soldering. Downside of both LPP setups is the requirement to have that port activated.
SP Connect Bosch LPP eBike cable for charging modules
SP Connect Bosch LPP eBike cable for charging modules ➤ direct connection cable between charging module & Bosch Lower Power Port ➤ buy now!
www.ebike24.com
3) Can't help but notice on the 400C display it has a USB charge port, it states this doesn't work if the HPP is used (or for the SX the MPP is set to High power). That must mean there is a fair amount of power available on the display cable. You can get Y cables when adding a Purion 200 to a mini controller, so would think you could use a the display cable as a power source. In addition, I wonder if you can read the data directly off the display cable, therefore removing the need for the phone app. However, no idea how easy it is to interrogate that.
4) If you didn't want to mount the bridge to your bike then you could use an inductive charging adapter, then making a waterproof case would be easy. Though have also seen qi charge addon boards for phones which have a USBC output directly.
Inductive Charging Set - 5V @ 500mA max
The squarish board with two chips on it is the transmitter (power with 9V). The longer board is the output and you can connect that to the part of your project that needs powering.
thepihut.com
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, big thanks again!
